Answer:
what stuture?
Explanation:
Explain the volume of ideal gasses as related to the molar concept.
Answer:
n = Initial volume/22.4L
Explanation:
The molar concept is simply one that is used to find the Number of moles and explain the relationship it has with avogadro's number, molecular mass, molar mass e.t.c.
Now, in terms of molar mass, number of moles is given by the formula;
n = mass of the sample/molar mass
In terms of avogadro's number, number of moles is;
1 mole = avogadro's number = 6.02 × 10^(23)
Now, when dealing with ideal gases, the molar volume of an ideal gas is 22.4 L.
Now the relationship between this volume and the mole concept is that the number of moles is gotten by dividing the initial volume by this molar volume.
Thus;
n = Initial volume/22.4L
Calculation of the number of grams of salt and water of 10 grams of eye drops, if the weight of the salt in the solution is 0,25%
Answer:
See Explanation
Explanation:
Let the mass of salt be x
Let the mass of solution be 10 g
Percentage by mass of salt = 0,25%
So;
Percent concentration of salt = mass of salt/mass of solution * 100
0.25 = x/10 * 100
0.25 * 10/100 = x
x= 0.025 g of salt
Let the mass of water be y
Since mass of solution = mass of salt + mass of water
10 g = 0.025 g + y
y = 10 g - 0.025 g
y = 9.975 g
Single Replacement Reactions:
AI+CU(CIO3)2----->
Ag+Li3PO4----->
Answer:
2Al + 3Cu(ClO3)2 → 2Al(ClO3)3 + 3Cu and
3Ag + Li3PO4 → Ag3PO4 + 3Li
Explanation:
In single repacement reactions, one element is substituted for another to produce a different compound. In the problem, the cation is exchange and the elements produced are:
Al(ClO3)3 and Ag3PO4.
The reactions are:
2Al + 3Cu(ClO3)2 → 2Al(ClO3)3 + 3CuAnd:
3Ag + Li3PO4 → Ag3PO4 + 3LiWhich is a process that involves collecting information and ideas that are supported by belief or opinion?
science
systematics
pseudoscience
hypothesis
Answer:
The answer is C
Explanation:
I did it on edge
Help me, I’m failing chem
What is the hydronium ion concentration of a pH of 3.4?
a. 5.0 x 10^-4 M
b. 4.0 x 10^-4 M
c. 2.5 x 10^-3 M
d. 1.0 x 10^-7 M
Answer:
b
Explanation:
[H3O+] = 10-pH = 10-3.4 ≅ 3.981 x 10^-4 moles/liter
What characteristic of the light is affected by the amplitude of the light
wave
(A) color
(B) brightness
Answer:
I think B but I'm not sure.
Answer: Amplitude of the light wave impacts brightness; the wavelength is what impacts/is associated with color.
Please help I beg this is going to determine my grade for the end of the year so please what ever you do please help me and my grade
Answer:
there's nothing in the picture or post
Answer:
There doesn't appear to be a question here.
Explanation:
you might need to reupload this with the question
A reaction that is considered fast is likely to have which of the following characteristics?
A) A high activation energy
B) A high temperature
C) A low collision frequency
D) Reactants in low concentrations
Answer:
I believe it's either a or b but I'm pretty sure that it's a
Here is number 1 thank you again
Answer: i believe the answer is stayed the same
I hope u get this right
What is the electron configuration of a ground-state Nb2+ ion? Select one: a. 1s22s22p63s23p64s23d104p65s24d1 b. 1s22s22p63s23p64s23d104p64d3 c. 1s22s22p63s23p64s23d104p65s14d2 d. 1s22s22p63s23p64s23d104p64d5 e. 1s22s22p63s23p64s23d104p65s24d3
Two or more than two atoms with different physical or chemical properties can not combine together to form an element. Therefore, the electronic configuration of Nb²⁺ is [Kr]4d³.
What is element?Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same.
The systematic distribution of electrons in the various atomic orbitals is called its electronic configuration. The atomic number of Nb is 41. The electronic configuration of Nb is [Kr] 4d⁴ 5s¹. The electronic configuration of Nb²⁺ is [Kr]4d³. Nb²⁺ also has an odd number of valence electrons. The superscripts represents the number of electrons in each orbitals.
Therefore, the electronic configuration of Nb²⁺ is [Kr]4d³.
To know more about element, here:
brainly.com/question/8460633
#SPJ5
If you want to make 8.00 moles of AlF₃ how many moles of F₂ will you need, using the following balanced chemical equation? 2 Al + 3 F₂ → 2 AlF₃
Answer:
You will need 12.0 moles of F₂
Explanation:
Based on the chemical equation, 2 moles of AlF₃ are produced when 3 moles of F₂ are added in an excess of Al.
Using this expression: 2mol AlF₃ = 3mol F₂ we can find the moles of F₂ as follows:
8.00 mol AlF₃ * (3mol F₂ / 2mol AlF₃) =
You will need 12.0 moles of F₂When agno3 was added to test tube d it reacted with cl to form agcl precipitate. Did this result in a shift to the right or the left
Answer:
Reaction will move rightwards.
Explanation:
Hello there!
In this case, according to the proposed question, it turns out possible for us to figure out the effect of the addition of silver nitrate, by using the following representative equation for the formation of the silver chloride precipitate:
[tex]Ag^+(aq)+Cl^-(aq)\rightleftharpoons AgCl(s)[/tex]
Now, due to the addition of silver nitrate, we will be actually adding silver ions to the solution, which means that, in terms of the Le Ch atelier's principle, the reaction will shift to the right towards the formation of more silver chloride precipitate.
Best regards!
Describe Electrovalent bond.
Answer:
The chemical bond formed by the transfer of electrons from the valence shell of one tom to the valence shell of another atom is called electrovalent bond or ionic bond ad the valency is electrovalency. The compounds which are formed as a result of lectrovalent bonding are called electrovalent compounds or ionic compounds.
Explanation:
ectrovalent bond is formed between two atoms in which one atom belongs to a etal while the other to a non-metal. The metal atom loses its valance electron to tain stable electronic configuration and gains positive ion or cation. On the other nd, the non-metal atom gains electrons from the metal to form stable negative ion anion. The atom of an element which has less than 4 electrons in its valence shell has tendency to lose electrons whereas the atom which has more than 4 electrons in its lance shell has a tendency to gain electrons to attain the inert gas configuration. As a sult, these atoms acquire electrical charges; called ions. Usually metal atoms lose ectron (s) and gain positively charged whereas non-metal atoms usually gains electron and acquires a negative charge. These two oppositely charge ions i.e. cation and mion are bonded together by the force of attraction to form the ionic bond.
Answer:
the chemical which transfer elements totally
2. What volume of a 1.60 mol/L stock solution of calcium chloride would you use to make a 530 mL of a
0.34 mol/L solution? (2 marks)
Answer:
112.625 mL
Explanation:
Applying,
ML = M'L'.................... Equation 1
Where M = Initial molarity or concentration of calcium chloride, L = initial volume of calcium chloride, M' = Final molarity of calcuim chloride, L' = Final volume of calcuim chloride.
make L the subeject of the equation
L = M'L'/M................ Equation 2
From the question,
Given: M = 1.60 mol/L, M' = 0.34 mol/L, L' = 530 mL
Substitute these values into equation 2
L = (0.34×530)/1.60
L = 112.625 mL
If air resistance is negligible, the sum total of potential and kinetic energies of a freely falling body _______
Answer:
Mechanical energy
Explanation:
Given that,
Potential energy of an object is given by :
P = mgh
The kinetic energy of an object is given by :
[tex]K=\dfrac{1}{2}mv^2[/tex]
Where
m is mass
h is height
v is velocity of the object
The sum of potential and kinetic energy is equal to total energy or the mechanical energy.
Hence, if air resistance is negligible, the sum total of potential and kinetic energies of a freely falling body is equal to mechanical energy.
Which is the balanced half-reaction equation for the reduction of Al3+ to Al?
1. A13+ + 3e - Al
2. A13+ - Al + 3e
3. Al + 3e - A13+
4. Al - A13+ + 3e
Answer:
1. Al³⁺ + 3e⁻ → Al
Explanation:
In a reduction, the oxidation number of a species is converted to a lower value.
In the following half-reaction:
Al³⁺ + 3e⁻ → AlThe number of atoms is the same on both sides of the equation (one Al atom). The electrical charge is also the same, as there is a total charge of 0 on both sides.
What causes water closest to the moon to form a tidal bulge?
A)revolution
B)friction
C)seasons
D)gravity
Answer:
gravity
Explanation:
gravity effects earth's seas and its currents
how do I calculate the density
The gas in a balloon has a volume of 2 Lat a temperature of 301 K. What will be the final temperature (in K) when the volume expands to
8.5 L?
Answer:
Final temperature = 1279.25 K
Explanation:
We can solve this using the formula for Charles law since we are given volume and temperature.
From Charles law, we know that;
V1/T1 = V2/T2
Where;
T1 is the initial temperature
V1 is the initial volume
T2 is the final temperature
V2 is the final volume
We are given;
V1 = 2 L
T1 = 301 K
V2 = 8.5 L
Thus, making T2 the subject, we have;
T2 = V2•T1/V1
Plugging in the relevant values;
T2 = 8.5 × 301/2
T2 = 1279.25 K
A new chemistry teacher arrives in her new room and discovers that the room was left in total chaos by her predecessor. While organizing the room, she finds a box on a shelf in the prep room labeled "Electrochemistry demonstration". The box contains some metal strips, and a solution in a bottle. The metal is labeled "Metal E" and the solution is labeled "1 M nitrate salt of E". In an attempt to organize the activity, she looks throughout the room for similar samples. She manages to find samples of metals and their nitrate solutions labeled A, B, C and D in addition to the original sample. In a file cabinet, she finds a paper labeled "Electrochemistry Activity" which lists five metals: zinc, aluminum, magnesium, silver and tin She is not able to find anything that identifies which metals correspond to which letters. She makes some quick observations, summarized below.
Answer:
D in addition to the original sample. In a file cabinet, she finds a paper labeled "Electrochemistry Activity" which lists five metals: zinc, aluminum, magnesium, silver and tin She is not able to find anything that identifies which metals correspond to which letters. She makes some quick observations, summarized below.
Explanation:
Cells need energy to function, but also need to be able to heal and grow for a person to be healthy. Which of the following describes how cells grow
A. Glucose molecules are put back together to form starch molecules for growth
B. oxygen molecules recombine to allow cells to get larger
C Amino Acid molecules are put back together in cells to make protein molecules for growth.
C Amino Acid molecules are put back together in cells to make protein molecules for growth.
- Because to repair or make new cell the nutrients require is protien and 50 % of your dry body is nothing but protien.
If you have 250mL of an 11M solution and add enough water to dilute it to 7 M, then what is the final volume of the solution?
solid iron with copper (II) sulfate. Assume the iron will form a +2 charge on the product side. Write the balanced equation for this reaction
Answer:
hey here is the answer to your question.
Explanation:
1) Write a balanced equation for the reaction occurring. (*Iron occurs in a few different oxidation states, but I will assume we're referring to Fe(II) or Fe2+)
Fe + CuSO4 -> Cu + FeSO4
2) Calculate the number of moles of each reactant.
Fe: 1.924 g * (1 mol / 55.85 g) = 0.03455 mol Fe
CuSO4: 0.1363 L * (0.0750 mol / 1 L) = 0.01022 mol CuSO4
3) Determine the limiting reactant. Because we have fewer moles of copper(II) sulfate and are reacting both reactants in a 1:1 ratio, we will run out of copper(II) sulfate first, making it the limiting reactant.
4) Convert moles of the limiting reactant to moles and grams of product of interest.
0.01022 CuSO4 (1 mol Cu / 1 mol CuSO4 ) (63.55 g Cu / 1 mol Cu) = 0.6495 g Cu
What is the mass of an electron? Please help
Answer:
9.10938356 × 10-31 kilograms
Explanation:
lightest stable subatomic particle known. It carries a negative charge of 1.602176634 × 10−19 coulomb, which is considered the basic unit of electric charge. The rest mass of the electron is 9.1093837015 × 10−31 kg, which is only 1/1,836the mass of a proton.
Answer: Hope This Helps
Explanation:
Here's just some additional information: Electron Mass In physics, the electron mass or mass of electron or electron rest mass one of the fundamental constants and is defined as the mass of a stationary electron. Denoted by m e. The value of electron mass is also known as the invariant mass of an electron
(Also, the screenshot is the answer. Also, can i have brainliest so i can go to next rank! Thanks and have a blessed day!)
Which chemical equation represents a synthesis reaction?A.HCl + LiOH → LiCl + H2OB.2Na + MgCl2 → 2NaCl + Mg.H2CO3 → H2O + CO2D.C + O2 → CO2
Answer:
H20 +CO2 >H2CO3
Explanation:
Please don't report me just want to help and if this helped please leave a heart.
The chemical reaction that represents a synthesis reaction is C +O2 → CO2.
What is a synthesis reaction?A synthesis reaction is a type of chemical reaction in which new compounds or substance are formed from the interaction of two elements.
It is the formation of new substances or products.
Therefore, The chemical reaction that represents a synthesis reaction is C +O2 → CO2.
Learn more about synthesis reaction below.
https://brainly.com/question/16560802
#SPJ2
Help I got only 15 minutes left
Answer:
90g
Explanation:
I hope this helps plz give brainliest ! :D
What is the
difference
between the
geological carbon
cycle and the
biological carbon
cycle?
Answer:
Geologic carbon sequestration is the process of storing carbon dioxide (CO2) in underground geologic formations. The CO2 is usually pressurized until it becomes a liquid, and then it is injected into porous rock formations in geologic basins. This method of carbon storage is also sometimes a part of enhanced oil recovery, otherwise known as tertiary recovery, because it is typically used later in the life of a producing oil well. In enhanced oil recovery, the liquid CO2 is injected into the oil-bearing formation in order to reduce the viscosity of the oil and allow it to flow more easily to the oil well.
Biologic carbon sequestration refers to storage of atmospheric carbon in vegetation, soils, woody products, and aquatic environments. For example, by encouraging the growth of plants—particularly larger plants like trees—advocates of biologic sequestration hope to help remove CO2 from the atmosphere.
Hope this helped!
N2 + 3H2 3H2 -> 2NH3
A H = -92.2 kJ
During the above reaction, energy is -
A) absorbed
B) created
C) destroyed
D) released
Given that the enthalpy change ΔH for the reaction is negative, energy is released during the reaction (Option D)
Data obtained from the questionEquation: N₂ + 3H₂ —> 2NH₃Enthalpy change (ΔH) = –92.2 KNature of energy=?How to determine the nature of the energyFrom the data given above, we can see that the enthalpy change (ΔH) for the reaction is negative.
This simple means that heat energy is lost to the environment.
Therefore, we can conclude that the during the reaction, energy is released (Option D)
Learn more about enthalpy change:
https://brainly.com/question/4526346
#SPJ2
If 2 carbon atoms, underwent fusion. What element would you get?
Answer:
Two Helium atoms
If two carbon atoms underwent fusion (of 600 million kelvin) you would get two helium atoms.
Which of the following are physical properties?
Radioactivity
Color
Temperature
Flammability
Texture
Reactivity
Answer:
Explanation:
The properties that are observed or measured without changing the composition of matter are called physical properties.
color, Temperature, Texture are the physical properties as the composition of matter remains the same.
On the other hand, Radioactivity, Flammability and Reactivity comes under chemical property as during the chemical reactions there might be some changes in the properties.