Answer:
2.5 M H2SO4
Explanation:
2.5 mol / 1.00 L = molarity of 2.5
Explain about Bose-Einstein condensate.
Answer:
A Bose-Einstein condensate or BEC in simple words is a group of atoms cooled near absolute zero.
What does electronegativity mean?
Answer:
Electronegativity refers to the ability of an atom to attract shared electrons in a covalent bond. The higher the value of the electronegativity, the more strongly that element attracts the shared electrons.
Your welcome
Which characteristic is most likely found in a nuclide that is radioactive and synthetic?
an atomic number of 30
a mass number of 30
an atomic number of 94
a mass number of 94
Answer:
An atomic number of 94
Explanation:
Just took the practice
What is one way that minerals crystallize from materials dissolved in water?
Answer:
From solutions that evaporate
From hot water solutions when the solution cools
Explanation:
The substances that can form minerals can be dissolved in the water to form a solution. Solution can be described as as a mixture in which a solute is dissolved in a solvent. When a particular dissolved solute evaporates from the solution, crystals of minerals might form. The mineral halite was formed when seas evaporated over a period of time.
The minerals can also be formed when a hot water solution gets cooled.
Which of the following is the correct definition of "weathering"? *
The movement of rocks
The breakdown of rocks.
The dropping off of rocks
All of the above
Knowing that Boyle's Law is P1V1 = P2V2, How would we rearrange the formula if we needed to solve for P1?
A. P1 = V1 -P2
B. P1 = P2V2 - V1
C. P1 = P2V2/V1
D. P1= V1/V2
Answer:
your answer is C
Explanation:
because when u make P1 the subject formula then P2 V2 will be divided with V1
Imagine there is less gravity on Earth for
one day. List THREE ways that you would make the most of this
situation, and give a reason for each one.
Answer:
Three ways that I would make most of this situation are going near an area to avoid the things drifting into space. I would seek shelter in a basement. I would also stay indoors.
Earth's atmosphere and its oceans, rivers, and lakes would be one of the first things to drift away into space, we would need to avoid those obstacles by seeking shelter. The first problem is that Earth is rotating at high speed, rather like the way a weight on a string rotates if you spin it around your head. Anyone unfortunate enough to be outside at the time would quickly be lost. People inside buildings would be safer because most buildings are so firmly rooted to the ground that they would stay put even without gravity – at least for a while.
Gravity is the universal force that attracts matter. If there is less gravity, then the objects on the Earth will become weightless.
What is gravity?Gravity or the gravitational force is the fundamental force present in the universe that keeps the matter attracted to each other. It plays a major role in the rotation of the earth around the sun and keeps the atmosphere of the planet balanced.
In case of no gravity, the objects will become weightless and will start to float, and Earth will stop rotating and will collide with the sun. Also, the moon will collide with the earth and the objects will perish in the universe.
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What is the correct name of the acid corresponding to the BrO3- oxoanion
Answer:
hello
Bromate is a bromine oxoanion and a monovalent inorganic anion. It is a conjugate base of a bromic acid.
Explanation:
thanks
Which bond occurs between two metal atoms?
Answer:
An ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions. Ionic bonds are formed between a cation, which is usually a metal, and an anion, which is usually a nonmetal. A covalent bond involves a pair of electrons being shared between atoms.
Answer:
Hi! An ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions. Ionic bonds are formed between a cation, which is usually a metal, and an anion, which is usually a nonmetal. A covalent bond involves a pair of electrons being shared between atoms.
If this helped drop a brainley plz ;)
Explanation:
explanation and answer and you’ll get brain list
Answer:
Option B.
Explanation:
2Pb(NO₃)₂ → 2PbO + 4NO₂ + O₂First we convert 9.90 g of Pb(NO₃)₂ into moles, using its molar mass:
9.90 g ÷ 331.2 g/mol = 0.0299 mol Pb(NO₃)₂Then we convert moles of Pb(NO₃)₂ into moles of PbO, using the stoichiometric coefficients:
0.0299 mol Pb(NO₃)₂ * [tex]\frac{2molPbO}{2molPb(NO_3)_2}[/tex] = 0.0299 mol PbONow we convert 0.0299 mol PbO into grams, using its molar mass:
0.0299 mol PbO * 223.2 g/mol = 6.67 g PbOSo 6.67 g is the theoretical yield. With that in mind we calculate the percent yield:
% yield = 5.51 / 6.67 * 100 % = 82.6%So the correct answer is option B.
What is true about the position of any metal in the periodic table
Answer:
The metals are on the bottom left in the periodic table, and the nonmetals are at the top right. The semimetals lie along a diagonal line separating the metals and nonmetals. The elements are arranged in a periodic table, which is probably the single most important learning aid in chemistry.
Explanation:
im not sure if there was supposed to options to that question or not
Question #37.P.2A.2
Which statement about the periodic table is true?
a. Elements in the same column share similar properties.
b. Elements in the same row share similar properties.
c. Elements on the left have a larger nucleus than elements on the right.
d. Elements at the top of each column have the highest atomic mass in that column.
When 136g of glycine are dissolved in of a certain mystery liquid , the freezing point of the solution is lower than the freezing point of pure . On the other hand, when of sodium chloride are dissolved in the same mass of , the freezing point of the solution is lower than the freezing point of pure . Calculate the van't Hoff factor for sodium chloride in . Be sure your answer has a unit symbol, if necessary, and round your answer to significant digits.
The given question is incomplete. The complete question is:
When 136 g of glycine are dissolved in 950 g of a certain mystery liquid X, the freezing point of the solution is 8.2C lower than the freezing point of pure X. On the other hand, when 136 g of sodium chloride are dissolved in the same mass of X, the freezing point of the solution is 20.0C lower than the freezing point of pure X. Calculate the van't Hoff factor for sodium chloride in X.
Answer: The vant hoff factor for sodium chloride in X is 1.9
Explanation:
Depression in freezing point is given by:
[tex]\Delta T_f=i\times K_f\times m[/tex]
[tex]\Delta T_f=T_f^0-T_f=8.2^0C[/tex] = Depression in freezing point
[tex]K_f[/tex] = freezing point constant
i = vant hoff factor = 1 ( for non electrolyte)
m= molality =[tex]\frac{136g\times 1000}{950g\times 75.07g/mol}=1.9[/tex]
[tex]8.2^0C=1\times K_f\times 1.9[/tex]
[tex]K_f=4.32^0C/m[/tex]
Now Depression in freezing point for sodium chloride is given by:
[tex]\Delta T_f=i\times K_f\times m[/tex]
[tex]\Delta T_f=20.0^0C[/tex] = Depression in freezing point
[tex]K_f[/tex] = freezing point constant
m= molality = [tex]\frac{136g\times 1000}{950g\times 58.5g/mol}=2.45[/tex]
[tex]20.0^0C=i\times 4.32^0C\times 2.45[/tex]
[tex]i=1.9[/tex]
Thus vant hoff factor for sodium chloride in X is 1.9
Which of the following apply to concentration?
Answer:Concentration of products can vary.
As more solute dissolves, more ions form; but the volume in which they are contained does not change.
Concentration of the solid phase does not change.
Explanation:
#8 explain and answer
Answer:
B. The limiting reactant determines the maximum amount of product that can be formed.
12. lithium + hydrochloric acid
lithium chloride + hydrogen
Balance
Answer:
Li + HCl = LiCl + H2 - Chemical Equation Balancer.
Explanation:
Boyle's Law states that when a sample of gas is compressed at a constant temperature, the pressure P and volume V satisfy the equation PV = C, where C is a constant. Suppose that at a certain instant the volume is 100 cm3, the pressure is 150 kPa, and the pressure is increasing at a rate of 30 kPa/min. At what rate is the volume decreasing at this instant?
Answer:
The volume is decreasing at a rate of 30 cm³/min.
Explanation:
From the question given above, pressure (P) and volume (V) are related by the following equation
PV = C
C => constant
If we make P the subject of the above, we shall have:
P = C/V
From the equation above (i.e P = C/V),
We can say that P is inversely proportional to V. This implies that as P is increasing, V will be decreasing and also, as P is decreasing, V will be increasing.
Considering the question given above, the pressure (P) is increasing at a rate of 30 kPa/min. Therefore, the volume will be decreasing at a rate of 30 cm³/min.
Aluminum sulfate reacts with barium chloride to form the insoluble compound, barium sulfate. The reaction proceeds according to the balanced equation below:
1Al2(SO4)3 + 3BaCl2 → 2AlCl3 + 3BaSO4
Marie reacts 150 g of aluminum sulfate with 200 g of barium chloride in order to produce insoluble barium sulfate for her crystallography studies. Determine the limiting and excess reactants for this reaction.
Molar mass aluminum sulfate: 342.15 g/mol
Molar mass barium chloride: 208.23 g/mol
Molar mass barium sulfate: 233.38 g/mol
Answer: [tex]BaCl_2[/tex] is the limiting reagent and [tex]Al_2(SO_4)_3[/tex] is the excess reagent.
Explanation:
To calculate the moles :
[tex]\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}[/tex]
[tex]\text{Moles of aluminium sulphate}=\frac{150g}{342.15g/mol}=0.438moles[/tex]
[tex]\text{Moles of barium chloride}=\frac{200g}{208.23g/mol}=0.960moles[/tex]
The balanced chemical reaction is:
[tex]Al_2(SO_4)_3+3BaCl_2\rightarrow 2AlCl_3+3BaSO_4[/tex]
According to stoichiometry :
3 moles of [tex]BaCl_2[/tex] require = 1 mole of [tex]Al_2(SO_4)_3[/tex]
Thus 0.960 moles of [tex]BaCl_2[/tex] will require=[tex]\frac{1}{3}\times 0.960=0.320moles[/tex] of [tex]Al_2(SO_4)_3[/tex]
Thus [tex]BaCl_2[/tex] is the limiting reagent as it limits the formation of product and [tex]Al_2(SO_4)_3[/tex] is the excess reagent as it is left.
what are the three components of a chemical formula?
Answer:
The three components of a chemical formula are the empirical formula, the molecular formula, and the structural formula.Hope this answer helps.
How does distance affect the brightness of a light? Please answer fast im doing a test.
(っ^-^ )っ Hey There!
Answer → As light travels a certain distance, the intensity of the light will decrease by a square of the distance.
Why → The farther away the light is the dimer it gets but the close light gets the bright it gets
✨Hope this Helps!✨
A chemist titrates 50.0 mL of a 0.1333 M benzoic acid (HCH,CO2) solution with 0.2560M NaOH solution at 25 °C. Calculate the pH at equivalence. The
PK, of benzoic acid is 4.20.
Round your answer to 2 decimal places.
Note for advanced students: you may assume the total volume of the solution equals the initial volume plus the volume of NaOH solution added.
DH-0
5
?
What are Renewable Resoures?
Answer:
resources that you can use more than 1 time like rechargeable battery or solar energy
Explanation:
PleaSe help meeeeeeeeeeeeeeeeee
Answer:
Wet climates obviously have more water than driers climates. Metals, when subject to water have the tendency to oxidize rust. Therefore, if water is barely present in a climate, then oxidation is also least likely to occur.
Explanation:
Learnt it from reading a book
what happens when an electrolyte, NaCl is added to hydrate ferric oxide solution
Answer:
hydrated ferric oxide is ferric hydoxide sol and is positively charged. When aqueous solution of NaCl is added to it,the Cl- ions neutralise the positive charge on the sol particles. In the absence of charge, brown precipitate is formes due to colloids can be coagulation of particles.Nov 11, 2020
Explanation: hope this help
How many moles are in 4.3x10 23atoms of iron?
Answer:
[tex]\Large \boxed{\sf 0.714 \ moles}[/tex]
Explanation:
Avogadro's number can be used as a conversion factor from atoms to moles or moles to atoms.
[tex]\displaystyle \frac{4.3 \times 10^{23}}{6.022 \times 10^{23} } =0.714048[/tex]
Glven 4.62 mol of sodium hydroxide, NaOH, how many grams are present?
According to the mole concept , there are 184.8 grams in 4.62 moles of sodium hydroxide.
What is a mole?Mole is defined as the unit of amount of substance . It is the quantity measure of amount of substance of how many elementary particles are present in a given substance.
It is defined as exactly 6.022×10²³ elementary entities. The elementary entity can be a molecule, atom ion depending on the type of substance. Amount of elementary entities in a mole is called as Avogadro's number.
It is widely used in chemistry as a suitable way for expressing amounts of reactants and products.For the practical purposes, mass of one mole of compound in grams is approximately equal to mass of one molecule of compound measured in Daltons. Molar mass has units of gram per mole . In case of molecules, where molar mass in grams present in one mole of atoms is its atomic mass.Number of moles is given as, mass/ molar mass
∴mass=number of moles×molar mass
On substitution, mass= 4.62×40=184.8 g
Thus, there are 184.8 g in 4.62 mole of sodium hydroxide.
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A student said, "You can't see the full Moon during the day because it rises close to sunset."
Which diagram supports this statement? (Diagrams are not to scale. You are looking down from
a north polar view fisa person standing on Earth at sunset.)
Oq. Ooo
Ooo
OD
ОА
OB
ОС
OD
Answer:
I think it would be B.
Explanation:
Would an object with a higher specific heat absorb more or less energy when heated?
Answer:
less
Explanation:
the more heat it has, the less a given heat will affect it
Answer:
more heat
Explanation:
Based on Table F, which compound is least soluble in water?
1. AIPO4
2. Li2SO4
3. Ca(OH)2
4. AgC₂H₂O2
Based on Table F, the chemical compound which is least soluble in water is: 1. [tex]AlPO_4[/tex].
What is solubility?Solubility can be defined as a terminology that describes how readily a chemical substance or compound can be dissolved in a solvent to form a solution.
In Chemistry, a chemical substance or compound is said to be soluble if it dissolves completely in a solvent such as water.
Based on Table F, the chemical compound which is least soluble in water is [tex]AlPO_4[/tex] because phosphates are generally insoluble.
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what energy is stored
Answer: potential energy is stored
Explanation: