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Chemistry Questions and Answers (Q&A)

What are the intermolecular forces present in the molecule CH2F2?
M. Delilah
Answered: Dec 21, 2020
CH2F2 is a polar molecule, so it has dipole-dipole interaction and London forces. The London force is also referred to as the London dispersion force; it is a type of force that is between the...Read More

5 Answers

7119 views
What is the balanced equation when aluminum reacts with copper (II) sulfate?
J. Alfie, Content Writer
Answered: Dec 14, 2020
The balanced chemical equation is 2Al + 3CuSO4 --> Al2(So4)3 + 3Cu
When Aluminum is added to Copper Sulfate, it displaces Copper, and it reacts with Sulfate to for Aluminum Sulfate because...Read More

3 Answers

5080 views
How many moles of atoms are in 50.15 g of mercury (atomic mass 200.59 amu)?
L. Brett, Sales Manager
Answered: Mar 28, 2019
The correct answer to this question is C, 0.2500 mol. To solve this you, you need to know the mathematic equation. The atomic weight of mercury is 200.59. If one mole is equal to the number of...Read More

3 Answers

4230 views
What is the mass of 0.240 mol glucose, C6H12O6?
R. Jones, Student
Answered: May 17, 2019
The correct answer to this question is 43.2 g. The mass of the glucose in one mole is calculated and then compared. First, one must identify that there are : 12 H = 1.0079g x 12 =12.0948 g , 6 C...Read More

2 Answers

3874 views
Which bond has the greatest ionic character?
H. Jones, Web Content Writer
Answered: Jul 11, 2018
H-F is the most ionic out of all the choices available. This is because when the differences are computed, this has the greatest electronegativity difference. Take note that only those with...Read More

8 Answers

3082 views
What is the empirical formula for a compound that is 43.6% phosphorus and 56.4% oxygen?
L. Brett, Sales Manager
Answered: Mar 28, 2019
The empirical formula for a compound that is 43.6% phosphorus and 56.4% oxygen is P2O5. In the formula, the P stands for phosphorus and the O standards for oxygen, so there are 2 phosphorus (P)...Read More

2 Answers

3057 views
What is the electron geometry of NF3?
J.Spencer, Knowledge enthusiast
Answered: Apr 27, 2018
NF3 has a trigonal pyramidal structure. Nitrogen has three bonds with fluorine and the presence of one lone pair. There is a good amount of polarity due to the electronegativity differences in...Read More

3 Answers

2987 views
Which ionic compound among Al2O3, NaCl, AlF3, . MgO would be expected to have the highest lattice energy?
E. Stanley, Technical writer
Answered: Jul 17, 2018
The lattice energy is the energy released when the lattice is formed. It can also be the energy required to break the lattice bonds. These can be covalent or ionic bonds. Depending on the forces...Read More

3 Answers

2828 views
What is the molecular geometry of IF4-?
C. Block, English Professor
Answered: Mar 28, 2019
The correct answer to this question is square planar. While IF4- has an octahedral electron geometry, the molecular geometry of IF4- takes on a square planar shape. The cause of this is that...Read More

2 Answers

2588 views
What is the molarity of sodium chloride in sea water if it contains roughly 28.0 g of NaCl per liter?
Anika Nicole, Wordsmith
Answered: May 28, 2018
Given: Sea water contains roughly 28.0 g of NaCl per liter. To find: What is the molarity of sodium chloride (NaCl) in sea water? Solution: Molecular mass of NaCl= 58.4...Read More

3 Answers

2543 views
What is the sum of the coefficients if the following unbalanced equation is balanced?
E. Stanley, Technical writer
Answered: Jul 17, 2018
The sum of the coefficients is basically the total number of reacting molecules and products formed. However, you need to balance the equation first in order to reach the right value. For that,...Read More

3 Answers

2279 views
What is the temperature of the heated gas?
Danny R. Glover, Editor
Answered: Jul 11, 2018
To solve this problem remember one thing: the volume will remain constant because the gas is placed in a steel tank. The formula you need to follow is: P1/T1 = P2/T2. Input all of the needed...Read More

4 Answers

2164 views
What is the molecular geometry of BrF4-?
C. Marcus, Content Developer
Answered: Sep 25, 2018
Different atoms have different configurations depending on the shell of electrons surrounding them. When these atoms come together in different forms to form molecules, they give rise to...Read More

3 Answers

2073 views
What are the three ways to speed up dissolving?
Chinmayesree
Answered: Apr 30, 2017
Stirring- example- if you want to make NaCl solution, you mix water and NaCl and if you stir it the dissolving will be fasten up. Heating- As we all know, on heating expansion occurs. In expansion...Read More

3 Answers

1880 views
What is the molecular polarity of H2 and why?
F. Ray, Student
Answered: Jan 29, 2019
H2 is the molecular formula of Hydrogen, a colorless, odorless, highly flammable gas. One Hydrogen atom has one electron and is the first element on the Periodic Table of Elements. The molecular...Read More

2 Answers

1821 views

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