A lab tech has 8.0 L of a 12.0 M HCl solution available. What volume of this solution does she need to prepare 3.0 L of a 1.5 M HCl solution for CHM 101 lab?

Answers

Answer 1

Answer: 0.375L

Explanation: Using M1V1=M2V2, we can solve for V1.

12M*V1=1.5M*3.0L

V1 = [tex]\frac{1.5M*3.0L}{12M}[/tex]

V1 = 0.375L.

Answer 2

0.375 L volume of the solution she needed to prepare 3.0 L of a 1.5 M HCl solution.

What is a solution?

A homogenous mixture of one or more solutes that have been dissolved in a solvent is known as a solution. The material that a solute dissolves in to create a homogenous mixture is known as a solvent.

The component that dissolves in a solvent to create a homogenous mixture is known as a solute.

M₁ is the initial concentration of HCl solution = 12.0 M

V₁ is the volume of initial HCl solution that is needed

M₂ is the final concentration of HCl solution = 1.5 M

V₂  is the final volume of HCl solution to be prepared = 3.0 L

To find V₁, we get

V₁ = (M₂ V₂) / M₁

calculating the values, we will get:

V₁ = 1.5 M x 3.0 L / 12.0 M

= 0.375 L

Therefore, tech required to take 0.375 L of the 12.0 M HCl solution and dilute it to  3.0 L to make a 1.5 M HCl solution.

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Related Questions

N2O, also known as laughing gas, is commonly used by dentists as a sedative and pain reliever during dental procedures. Answer the naming questions below about N2O.

What is the IUPAC name for N2O?

mononitrogen dioxide

dinitrogen monoxide

nitrogen oxide

nitrous oxide

Answers

There are two types of chemical compound one is covalent compound and other is ionic compound, covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron. Therefore, the the IUPAC name for N[tex]_2[/tex]O is nitrous oxide.

What is chemical Compound?

Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.

An ionic compound is a metal and nonmetal combined compound.  Ionic compound are very hard. They have high melting and boiling point because of strong ion bond.

N[tex]_2[/tex]O, also known as laughing gas, is commonly used by dentists as a sedative and pain reliever during dental procedures. The IUPAC name for N[tex]_2[/tex]O is nitrous oxide.

Therefore, the the IUPAC name for N[tex]_2[/tex]O is nitrous oxide.

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Answer: 1. dinitrogen monoxide ( iupac name for N2O)

              2.nitrous oxide (common name for N3O)

Explanation:

Calculate the relative molecular mass of aspartame.

Answers

The chemical formula of aspartame is C₁₄H₁₈N₂O₅ and it's relative molecular mass is 294.30 g/mol which is calculated as (12×14)+(1×18)+(14×2)+(16×5).

What is molecular mass?

Molecular  mass of a compound or a molecule is defined as the mass of the elements which are present in it.The molecular mass is considered to be a bulk quantity not a molecular quantity. It is often an average of the of the masses at many instances.

The molar mass and formula mass are used as synonym for the molecular mass.It does not depend on the amount of substance which is present in the sample.It has units of gram/mole.

Molecular masses of an element are given as relative atomic masses while that of compounds is the sum of relative atomic masses which are present in the compound.In case of aspartame it is calculated as,(12×14)+(1×18)+(14×2)+(16×5)=294.30 g/mol.

Thus , relative molecular mass or molecular mass of aspartame is 294.30 g/mol.

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An aqueous solution contains the amino acid glycine (NH2CH2COOH). Assuming the acid does not ionise in water, calculate the molality of the solution if it freezes at 21.1°C.

Answers

The molality of the solution is  -11.34 m/kg. The number of moles of solute in a solution equal to 1 kg or 1000 g of solvent is referred to as its molality.

What is meant by molality?

The number of moles of solute in a solution equal to 1 kg or 1000 g of solvent is referred to as its molality. The definition of molarity, on the other hand, is based on a certain volume of solution. Mol/kg is a typical molality measurement unit in chemistry.

While a solution's molarity is determined by the moles of solute divided by the volume of the solution in litres, a solution's molality is determined by the moles of solute divided by the mass of the solvent in kilogrammes.

Colligative property:  freezing point depression.

ΔT = Kf. m

ΔT = T°fussion pure solvent - T° fussion solution

Kf = depression constant for water

0°C - (21.1°C) = 1.86 °C/m . m

-21.1°C = 1.86°C/m . m

-21.1°C / 1.86° m/°C = m  → -11.34 m/kg

The molality of the solution is -11.34 m/kg

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A container of CH at 2.00 atm of pressure has a small pinhole, through which the CH effuses at a rate of 2.55 mL/min. What will be the rate of effusion of CO at 2.00 atm in the same container?​

Answers

The rate of effusion of CO at 2.00 atm in the same container would be 1.74 mL/min.

Rate of effusion of gases

According to Graham's law of effusion of gases, at constant pressure, the rate of effusion of gases is inversely proportional to the square root of their molar masses.  

Graham's law of effusion of gases can be mathematically represented as:

[tex]r_1/r_2[/tex] = [tex]\sqrt\frac{Mm_2}{Mm_1}[/tex]

Where [tex]r_1[/tex] and [tex]r_2[/tex] are effusion rates of gas 1 and gas 2, and [tex]Mm_1[/tex] and [tex]Mm_2[/tex] are their molar masses respectively.

In this case:

Gas 1 = CH

Molar mass of CH = 12 + 1 = 13 g/mol

[tex]r_1[/tex] = 2.55

Gas 2 = CO

Molar mass = 12 + 16 = 28 g/mol

[tex]r_2[/tex] = ?

Making [tex]r_2[/tex] the subject of the formula and substituting the values into the equation:

2.55/[tex]r_2[/tex] = [tex]\sqrt\frac{28}{13}[/tex]

2.55/[tex]r_2[/tex] = 1.4676

[tex]r_2[/tex]        = 2.55/1.4676

          = 1.74 mL/min

In other words, the rate of effusion of CO at 2.00 atm in the same container would be 1.74 mL/min.

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This compound ( 2,3-dimethyl-2-heptene ) is symmetric or asymmetric

Answers

Answer:

symmetric

Explanation:

The compound 2,3-dimethyl-2-heptene is symmetric. A compound is symmetric if it has an identical molecular structure on both sides of its central axis. In the case of 2,3-dimethyl-2-heptene, the molecule has a central carbon atom with two methyl groups attached to it, one on the 2nd position and one on the 3rd position. Because the groups attached to the central carbon atom are identical, the molecule is symmetric.

In contrast, an asymmetric compound has a molecular structure that is different on each side of its central axis. For example, a compound with a central carbon atom attached to two different groups, such as a methyl group and a hydrogen atom, would be asymmetric.

Describe the gan Sabana ecosystem

Answers

Answer: The African savanna ecosystem is a tropical grassland with warm temperatures year-round and seasonal rainfall. The savanna is characterized by grasses and small or dispersed trees, along with a diverse community of organisms that interact to form a complex food web.

How many moles of CaCl₂ would there be in 42 mL of 2.09 M aqueous CaCl₂ solution?
3 significant figures

Answers

Answer:

0.0878 moles CaCl₂

Explanation:

To find the amount of moles of CaCl₂, you need to

(1) convert the volume from mL to L (1,000 mL = 1 L)

(2) calculate the amount of moles (M = moles / L)

It is important to arrange the conversions in a way that allows for the cancellation of units.

(Step 1)
   

  42 mL CaCl₂                    1 L
------------------------  x  ----------------------  =  0.042 L CaCl₂
                                       1,000 mL

(Step 2)

Molarity (M) = moles / volume (L)                <----- Molarity ratio

2.09 M = moles / 0.042 L                            <----- Insert values

0.0878 = moles                                           <----- Multiply both sides by 0.042 L

Omar wants to determine if the mass of a model rocket affects how long the rocket is able to stay up in the air. To do this, he constructs three identical rockets and then fills two of the rockets with varying amounts of sand to add mass. He then launches the rockets one at a time and times how long they are able to stay airborne.

What is the test variable (independent variable) in Omar's experiment?
A.
the materials out of which the rockets were made
B.
the time the rockets remain airborne
C.
the force with which each rocket is launched
D.
the masses of the model rockets

Answers

The answer is b hope this helps you
C I think I don’t think I’m right tho

Nitrogen (N2) gas and hydrogen (H2) gas react to form ammonia (NH3) gas. Suppose you have 11 mol of N2 and 9 mol of H2 in a reactor.
Calculate the largest amount of NH3 that could be produced. Round your answer to the nearest 0.1 mol.

Answers

In the given reaction, the limiting reactant is hydrogen gas. 3 moles of hydrogen gas produces 2 moles of ammonia, thus 9 moles will produce 6 moles of ammonia that is equal to 102 g.

What is ammonia?

Ammonia is an inorganic gas formed by the combination of nitrogen gas and hydrogen gas. The balanced chemical equation for the reaction is written below:

[tex]\rm N _{2} + 3 H_{2} \rightarrow 2 NH_{3}[/tex]

As per the given reaction, hydrogen gas is needed more in this reaction, and it is the limiting reactant which determines the product yield. Here, 3 moles of hydrogen gas produces 2 moles of ammonia. Thus, 9 moles of hydrogen gas produces:

(9 × 2) / 3 = 6 moles.

Molar mass of ammonia = 17 g/mol

Thus mass of 6 moles = 17 g/mol × 6 moles = 102 g.

Therefore, the largest amount of ammonia that can be produced from 9 moles of hydrogen gas is 102 g.

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What mass of H2 forms when
35.25 g Al reacts with excess
hydrochloric acid?

Answers

The mass of [tex]H_2[/tex] that will be formed when 35.25 g Al reacts with excess hydrochloric acid would be 3.93 g.

Stoichiometric problem

The equation of the reaction of aluminum metal with hydrochloric acid to produce hydrogen gas is represented below:

[tex]2Al + 6HCl -- > 2AlCl_3 + 3H_2[/tex]

From the equation, one would see that the mole ratio of aluminum to the hydrogen gas produced is 2:3.

Now, with 35.25 g of aluminum, recall that: mole = mass/molar mass.

The molar weight of aluminum is 27 g/mol.

Thus:

Mole of 35.25 g Al = 35.25/27

                                = 1.31 mol

From the mole ratio, the mole of hydrogen that will be produced would be:

3/2 x 1.31 =1.97 mol

The molar mass of [tex]H_2[/tex] is 2 g/mol, the mass of 1.97 mol hydrogen gas can be calculated as:

Mass = mole x molar mass

         = 1.97 x 2

        = 3.93 grams

In other words, the amount of [tex]H_2[/tex] that would be formed when 35.25 g All reacts with excess hydrochloric acid would be 3.93 g.

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Where do stars form?

Answers

Stars form in large, dense regions of gas and dust known as molecular clouds. These clouds are located primarily in the spiral arms of galaxies, where they are exposed to intense radiation from nearby stars. As the gas and dust in these clouds are subjected to this radiation, they begin to collapse under their own gravity. As the collapse continues, the cloud becomes denser and denser, and eventually a protostar forms at its center. Over time, this protostar continues to contract and heat up, eventually reaching the point where nuclear fusion can begin in its core. At this point, the protostar becomes a fully-fledged star, and the process of star formation is complete.

TL;DR: Within the clouds of dust and scattered throughout most galaxies.

Stars are born within the clouds of dust and scattered throughout most galaxies.

carbon disulfide burns in oxygen to yield carbon dioxide and sulfur dioxide according to the fallowing chemical equation Cs2+3O2=CO2+2SO2

Answers

A. The limiting reactant would be oxygen.

B. The mole of excess reactant ([tex]CS_2[/tex]) would be 0.67 mol.

C. 0.33 mol [tex]CO_2[/tex] and 0.67 mol [tex]SO_3[/tex]  would be formed.

Stoichiometric problem

Carbon disulfide burns in oxygen to produce carbon dioxide and sulfur dioxide according to the balanced equation below:

[tex]CS_2(l) + 3O_2(g) -- > CO_2(g) + 2SO_2(g)[/tex]

The mole ratio of the carbon disulfide and the oxygen gas is 1:3. In other words, every mole of [tex]CS_2[/tex] requires 3 moles of [tex]O_2[/tex] for complete combustion.

A. From the established mole ratio, if 1.00 mol of [tex]CS_2[/tex] reacts with 1.00 mol of [tex]O_2[/tex], the limiting reactant would be [tex]O_2[/tex] because 3 moles of it are required for every mole of [tex]CS_2[/tex].

B. The excess reactant is, thus, [tex]CS_2[/tex]. 1.00 mol of [tex]O_2[/tex] would require:

3 mol [tex]O_2[/tex] = 1 mol [tex]CS_2[/tex]

1 mol [tex]O_2[/tex] = 1 x 1/3

               = 0.33 mol of [tex]CS_2[/tex]

But 1 mole of [tex]CS_2[/tex] reacted. The excess mole of [tex]CS_2[/tex] would be: 1 - 0.33 = 0.67 mol.

C. From the equation of the reaction, 3 mole of oxygen produces 1 mole of [tex]CO_2[/tex]. Thus, 1 mole of oxygen would produce:

3 mol [tex]O_2[/tex] = 1 mol [tex]CO_2[/tex]

1 mol [tex]O_2[/tex] = 1 x 1/3

              = 0.33 mol [tex]CO_2[/tex]

Also, 3 mol oxygen produces 2 moles [tex]SO_2[/tex]. Then 1 mol oxygen will produce:

2 x 1/3 = 0.67 mol

Thus, 0.33 mol [tex]CO_2[/tex] and 0.67 mol [tex]SO_3[/tex] will be formed from 1 mol of [tex]O_2[/tex].

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Carbon disulfide burns in oxygen to yield carbon dioxide and sulfur dioxide according to the following chemical equation. CS2(l) + 3O2(g) → CO2(g) + 2SO2(g)

a. If 1.00 mol CS2 reacts with 1.00 mol O2, identify the limiting reactant.

b. How many moles of excess reactant remain?

c. How many moles of each product are formed?

Which of the following is best for determining the type of bond that will form between atoms when forming a compound?

Answers

One way to predict the type of bond that forms between two elements is to compare the electronegativities of the elements. In general, large differences in electronegativity result in ionic bonds, while smaller differences result in covalent bonds.

Answer: Best way is Electronegativity.

Explanation:

Comparing the electronegativities of the two elements is one method of predicting the type of bond that will form between them. Ionic bonds typically result from significant differences in electronegativity, whereas covalent bonds typically result from smaller differences.

The kind of covalent bond that forms between two atoms depends on how many pairs of electrons are shared by them. There are some factors that determine the type of bonds.

Simply how they share electrons makes a difference between different binding kinds. Ionic bonds don't share at all, polar bonds share unevenly, and covalent bonds share equally. Following are the variables that affect the kind of bond that will form between two atoms:

Ionizing radiationAtomic affinityAtomic structure, etc.

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8. Interestingly, the 1s orbital in the chlorine atom encloses more volume of space than the 1s orbital in an argon atom. Explain.

Answers

Answer: Chorine's atomic radius in larger than that of Argon.

Explanation: Thinking in terms of atomic radius, as you move from left to right on the periodic table, atomic radius decreases. However, as you move from top to bottom on the periodic table, the atomic radius increases. This is because when you are moving from top to bottom on the periodic table, more orbitals are added. When you move from left to right, the number of orbitals remains the same but the number of protons in the nucleus is still increasing. They have a stronger hold on the electrons and pull them closer. This also makes it harder for outside photons to remove an electron from an atom (ionization energy) as you move from left to right on the periodic table.

Now let's think about chlorine and argon. They are right next to each other in the upper right-hand corner of the periodic table. However, chlorine does come first and if we think back to the atomic radius, it gets smaller as you move from left to right. Chlorine comes before Argon when looking left to right.

In conclusion, chorine's atomic radius is larger than that of argon.

Does the color of a potion matter

Answers

answer: what

explanation: what

What potion is you talking about?

how many atoms in 0.034 moles of titanium

Answers

Answer:

[tex] \huge{ \boxed{2.0468 \times {10}^{22} \: \text{atoms} }}[/tex]

Explanation:

To find the number of entities in a given substance we use the formula

[tex] \bold{N = n \times L} [/tex]

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question

n = 0.034 moles

N = 0.034 × 6.02 × 10²³ = 2.0468 × 10²²

We have the final answer as

[tex] \bold{2.0468 \times {10}^{22} \: \text{atoms}}[/tex]

Please HELP ASAP

Carbon dioxide gas, CO2, effuses at a rate that is 1.087 times the effusion rate of a second gas. One molecule of this second gas contains one atom of nitrogen and two other atoms that are identical. What element are these other atoms?

Answers

Ideal gas law is valid only for ideal gas not for vanderwaal gas. To solve such, we need to know the relation between rate of effusion and molar mass of gases. Therefore, the molar mass of unknown gas is 53.6g/mol.

What is ideal gas equation?

Ideal gas equation is the mathematical expression that relates pressure volume and temperature.

Mathematically the relation between rate of effusion of gases and their molar masses can be given as:

rate of effusion of unknown gas/rate of effusion of carbon dioxide gas=√molar mass of carbon dioxide/molar mass of particular gas

rate of effusion of carbon dioxide=1.087 ×rate of effusion of unknown gas

Substituting all the given values we get

rate of effusion of unknown gas÷ 1.087 ×rate of effusion of unknown gas=√44 g/mol÷ molar mass of unknown gas

1÷  1.087=√44 g/mol÷ molar mass of unknown gas

squaring both side

0.82=44 g/mol÷ molar mass of unknown gas

molar mass of unknown gas= 53.6g/mol

Therefore, the molar mass of unknown gas is 53.6g/mol

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If others adopted similar habits, how might the world of science change?

Answers

Answer:

Explanation:

Smoking a cigarette, snorting cocaine, or drinking yourself into oblivion are all easy habits to adopt because they light up your brain with the neurotransmitter …

why does enzymatic reduction result in a chiral product in a comparative reduction reaction?

Answers

The chirality of the enzyme ensures that a chiral product is obtained.

Why is the product chiral?

The term chirality could be simplified to mean "handedness". This idea comes from the fact that a compound could be handed. The handed of aa molecule has to do with the direction to which it rotates plane polarized. As such a compound could be left handed or right handed.

Now, we are told that the product of the enzyme is chiral. This is because the enzyme is also chiral and its shape can only lock into the particular chiral reactant and this is what does give rise to the chiral product.

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NEED HELP ASAP PLEASE AND TY

Answers

The synthesis of the ATP takes place in the organelle known as the mitochondrion. Therefore, option (A) is correct.

What is mitochondrion?

Mitochondrion can be described as the membrane-bound organelles in the cytoplasm of all eukaryotic cells, that synthesize adenosine triphosphate (ATP), the main energy source used by the cell.

It is also known as the “Powerhouse of the cell,” Mitochondrion is found inside the cytoplasm and essentially functions as the cell’s digestive system.

Mitochondrion plays a major role in breaking down nutrients and producing energy-rich molecules for the cell. Many of the biochemical reactions in cellular respiration occur within the mitochondria.

The mitochondrion's structure can be described as a double-membraned, rod-shaped structure found in both animal cells and plants.

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In this chemical equation below 2 Mg + HCI are called the ?

2 Mg + HCI —> MgCl2 + H2

Answers

In this chemical equation below 2Mg + HCI are called the reactants. Therefore, option (4) is correct.

What is the chemical equation?

A chemical equation can be defined as a representation of a chemical reaction with help of chemical symbols, and molecular formulae of the substances. A chemical equation exhibits reactants participating, formed products in the reaction, and an arrow shows the direction of the chemical reaction.

The chemical equation in which the number of atoms of each element on either side of the equation should be equal is called a balanced chemical equation.

A chemical equation obeys the law of conservation of mass.  By obeying this law,  in a balanced chemical equation, the total mass on the reactant side must be equal to total mass on the product side.

In the given chemical equation, Mg and HCl are reactants and MgCl₂and H₂ are products.

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Several isotopes of curium can be synthesized by bombarding 239Pu with alpha particles. Write a balanced nuclear equation describing the reaction that produces 241Cm.

Answers

The radioactive element plutonium  undergo radioactive bombardment producing stable isotope curium. The balanced nuclear reaction is written below:

[tex]_{94}^{239}\textrm{Pu} + _{2}^{4}\textrm{He}\rightarrow _{96}^{241}\textrm{Cm} + 2_{0}^{1}\textrm{n}[/tex]

What are  nuclear reactions?

Atomic nucleus undergoes reaction with charged particles producing either its isotope or a new atom. Heavy unstable atoms such as actinides undergo radioactive decay by emitting or bombarding charged species such as alpha particles to form stable species.

Plutonium is 94th element in periodic table. It is used as nuclear fuel because it releases energy during nuclear reactions. Bombardment of an alpha particle produces a curium (Z = 96, A =241) with two neutrons as side products.

Therefore the balanced nuclear reaction of Pu-239 to produce Cm-241 is written as below:

[tex]_{94}^{239}\textrm{Pu} + _{2}^{4}\textrm{He}\rightarrow _{96}^{241}\textrm{Cm} + 2_{0}^{1}\textrm{n}[/tex]

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2. When a solute is present in water,___.
the water will NOT boil.
the water boils at a lower temperature.
the water will NOT freeze.
the water freezes at a lower temperature.​

Answers

Answer:

the water freezes at a lower temperature.

Select all of the following that are combustion reactions.

Answers

Answer:

Explanation:

1,2,4,

The equations that show combustion are equations A, B and D.

What is combustion?

When we talk about combustion, the idea is that the substance would be burnt in oxygen. In other words, the combustion can be taken to be an oxidation reaction. It is an oxidation reaction in the sense that the oxidation number of the substance that is reacting with the oxygen would become increased.

When we look at the equations that we have, it is quite easy to pick out among the balanced reaction equations that are shown here the ones that has to do with the burning of the substance in oxygen and a consequent rise in the oxidation number.

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he body from the simplest level to the most complex level?
A.
tissue --> cell --> organ system --> organ --> organism
B.
organism --> organ system --> organ --> tissue --> cell
C.
cell --> tissue --> organ --> organ system --> organism
D.
organ --> tissue --> cell --> organ system --> organism

Answers

Answer:

C. cell --> tissue --> organ --> organ system --> organism

Explanation:

Cells are the building blocks of life (Ex: skin cells)

A group of cells for a tissue (Ex: epithelial tissue)

Tissues working together form an organ (Ex: the stomach)

Organs working together create organ systems (Ex: the digestive system)

Organ systems create organisms (Ex: a human)

Distillation is a technique in which substances are separated based on their what

Answers

Answer:

It is based on the boiling point or volatility of its components.

Explanation:

because Distillation separates liquid from solid.

what is meiosis cell divison?

Answers

Answer:a type of cell division in sexually reproducing organisms that reduces the number of chromosomes in gametes

Explanation:

Answer:

Its a type of cell division that reduces chromosomes.

Explanation:

I believe not 100% sure tho.

250 ml of a salt solution with a concentration of 15 g/l is mixer with 220 mL of salt solution containing 6% salt (m/v). What is the final concentration of salt in the solution in g/l

Answers

The final mass concentration of salt in the solution in g/l is 36.06 g/L.

What is the concentration of the mixture of the two salt solutions?

The mass concentration of the mixture of the two salt solutions is calculated as follows:

Concentration of solution 1 = 15 g/l

mass of salt in the 250 mL solution = 15 g/l * 250 mL * 1 L/1000 mL

mass of salt in the 250 mL solution = 3.75 g

Concentration of solution = 6% (m/v)

This means that in 100 mL solution, 6 g of salt in present.

In 1000 mL or 1 L solution, 60 g of salt will be present.

Hence, the concentration of solution = 60 g/L

mass of salt in the 220 mL solution = 60 g/l * 220 mL * 1 L/1000 mL

mass of salt in the 220 mL solution = 13.2 g

Total mass of salt in the mixture = 16.95 g

Total volume of solution = 470 mL

mass concentration = mass / volume in L

Final mass concentration of solution = 16.95 g / 470 mL * 1000 mL/L

Final mass concentration of solution = 36.06 g/L

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If you dilute a 10.0 mL of a 11.5 M HCl solution to make a 1.10 M HCl solution, what will the final
volume be?

Answers

Explanation:

The final volume will be 100 mL. This is because when you dilute a solution, the molarity of the solution decreases while the volume increases. Since the molarity of the original solution is 11.5 M and the desired molarity is 1.10 M, the volume must increase by a factor of 10.5 (11.5/1.10). Therefore, the final volume will be 10.0 mL x 10.5 = 100 mL.

What charge does Magnesium acquire when it becomes an ion?

Answers

Answer : 2+
A magnesium atom will form a cation with two fewer electrons that protons and a charge of 2+.
Other Questions
Solve the equation (1+3)-(2)2 + 4 = A family buys a studio apartment for $200,000. They pay a down payment of $20,000. a. Their down payment is what percent of the purchase price? b. What percent of the purchase price would a $90,000 down payment be? heat is radiated from earth to space predominately in the form of: a) infrared radiation. d) solar flares. b) radioactivity. Enlarge the triangle by scale factor -3 with centre (3,3) to assure accountability for fixed-asset retirements, management should implement an internal control that includes: The following scientists made significant contributions to our understanding of the structure and function of DNA. Place the scientists' names in the correct chronological order, starting with the first scientist(s) to make a contribution.I. Avery, McCarty, and MacLeodII. GriffithIII. Hershey and ChaseIV. Meselson and StahlV. Watson and Crick what is the relationship between space,peace, and war the conflicting results of cross-sectional and longitudinal studies of aging and intelligence are of greatest relevance to the issue of: chlorpromazine is an antipsychotic drug that reduces paranoia and hallucinations by a reducing involuntary muscle movements. b decreasing the availability of norepinephrine. c dampening responsiveness to irrelevant stimuli. d restoring the balance of serotonin. e elevating arousal and mood. Subtract.(2/9v) (1/3v + 5/9) A 0.8-liter bottle of Mexican wine costs 99 pesos. At thatprice, how much would a half-gallon jug of the same wine cost indollars? LESSON 3 SUMMARY, continued3. COMPARING ANDCONTRASTINGmaraGenesis, the first book of theTorah, describes how the worldbegan. Using the Internet orother sources, find a text fromanother culture or religionthat describes how the worldbegan. On a separate sheetof paper, write a short essaycomparing and contrastingwhat you found to the Bookof Genesis.According towithstand atwo of eachon the ark.show that tGenesis alworld. Mara lives in st. Louis, which is close to sea level. She decides to spend a month of her summer vacation working in the mountains outside of denver. After a week in the mountains, what kinds of changes would you expect to see as mara adapts to the higher altitude?. to be a close corporation, the business must be small, with no more than 20 owners, trade its stock publicly, and have no more than $500,000 in gross annual income. a test for a certain drug has a 0.1% probability of producing a false positive. if a company hired 500 drug-free employees, what is the probability of obtaining at least 1 false positive? explain why low levels of ozone are typically recorded in the morning (hint: how does ground-level ozone form): SOLVE FOR Tt+3/2 = -2T = in what ways was the colonial experience in the americas distinct from life in empires elsewhere in the world in early modern times? essay Coach Rogers listed the number of the different types of balls in the storage room. What is the ratio of baseballs to all of the balls?Group of answer choices1 : 51 : 41 : 101 : 50 why carbohydrate digestion occurs first in mouth?