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Chemistry Questions and Answers (Q&A)

Which of the following best helps to account for the fact that the F- ion is smaller than the O2- ion?
Ashleyvickers
Answered: Oct 30, 2020
F- has a larger nuclear charge than O2- has

1 Answer

3064 views
What is the balanced equation when aluminum reacts with copper (II) sulfate?
C. Bernthal, Teacher
Answered: Mar 07, 2019
To create a balanced equation when aluminium reacts with copper (II) sulphate, provide the correct coefficient for each compound. Be sure to count all atoms on each side of the chemical...Read More

2 Answers

2945 views
What are the intermolecular forces present in the molecule CH2F2?
E. James
Answered: Mar 12, 2020
There are two intermolecular forces that are available right now. These two are the following: Dipole-Dipole Forces and London Forces. The London Forces, also are known as the London Dispersion...Read More

4 Answers

2879 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

2380 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

2308 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

1979 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

1788 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

1481 views
What is the temperature of the heated gas? A gas is confined in a steel tank with a volume of 6.982 L. At 20.20°C, the gas exerts a pressure of 8.532 ATM. After heating the tank, the pressure...
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

1353 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

1330 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

1322 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

2 Answers

1275 views
What is the chemical name for PbO2?
J. Harty, Writer
Answered: Mar 28, 2019
The correct answer to this question is lead(IV) oxide. First, you must determine the type of compound you are working with. Then you must apply the naming convention rules to name the type of...Read More

2 Answers

1267 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

1258 views
What is the molecular polarity of H2 and why?
F. Ray, Student
Answered: Jan 29, 2019
The correct answer to this question is B. 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...Read More

2 Answers

1224 views

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