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Chemistry Questions and Answers (Q&A)

John Adney
Answered: Mar 21, 2017
In conservation of environment lesson bio plastic 3 option is the green chemistry product

4 Answers

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

3 Answers

John Adney
Answered: Aug 31, 2017
The general properties of matter such as color, density, hardness, are examples of physical properties. Properties that describe how a substance changes into a completely different substance are...Read More

3 Answers

M. Krasinski, Content Writer
Answered: Jan 29, 2019
The correct answer to this question is A. A solution is a mixture made up of at least substances, and usually it is hard to separate the two after the solution is mixed. A solution is two...Read More

3 Answers

Barry Mclean, Sales Manager
Answered: Aug 27, 2019
Electrons, protons, and neutrons are the three fundamental particles in an atom. Electron is a negatively charged particle, and according to Dalton's Atomic Theory, electrons are found outside...Read More

3 Answers

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

3 Answers

A. Samuel, Content Manager
Answered: Jul 16, 2019
The ‘‘Molarity’’ and ‘‘Molality’’ are measures of the concentration of a chemical solution. Molarity is also referred to as Molar concentration,...Read More

2 Answers

Samantha Stewart, Philanthropist
Answered: Jul 22, 2019
For those who do not know, the HG20 and the HG21 are two types of video cameras that are created by Canon. The HG21 is the updated version of HG20. All of the weaknesses of the HG20 are improved...Read More

2 Answers

J. Lautner, Product Manager
Answered: Aug 06, 2019
Ampicillin and Amoxicillin are two types of antibiotics with almost similar composition. Both Ampicillin and Amoxicillin are very much available in the market. Both drugs help in combating the...Read More

2 Answers

W. Kaye, Ex-Marine
Answered: Aug 22, 2019
Water solutions of a plethora of substances, quickly pass through plant or animal semipermeable barriers, while others such as gelatin do not pass through them. The first elements are called...Read More

2 Answers

Samantha Stewart, Philanthropist
Answered: Aug 22, 2019
Penetrance and expressivity both have to do with genetics in science. They are used when analyzing genetics. Both the penetrance and the expressivity have to do with gene expression and are...Read More

2 Answers

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

2 Answers

Samantha Stewart, Philanthropist
Answered: Dec 07, 2018
The correct answer is answering E: the atoms have the same atomic number, but a different number of neutrons. This is key. The atomic number signifies how many protons an atom has. If it has...Read More

2 Answers

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

2 Answers

J. Shatner, Content writer
Answered: Oct 11, 2018
Option B - increase in pressure.
The extent of adsorption is directly proportional to the pressure. Therefore, increase in pressure will cause increase in rate of adsorption. Keep in...Read More

2 Answers

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