300 Best Chemistry Questions and Answers (Q&A) - ProProfs Discuss

Which statement is best supported by this observation?

Mciraiz
Answered: Aug 21, 2020

A sample of a compound is added to distilled water in a clean beaker. A reaction occurs, and the water temperature drops rapidly. It is an endothermic reaction.

2 Answers

665 views

How many grams of solid barium sulfate form when 35 mL of 0.160 M barium chloride reacts with 58 mL of .065 M sodium sulfate?

J. Shatner, Content writer
Answered: Nov 05, 2018

In a science equation, a formula is usually used to determine the mass of something. In this case, a formula is used to determine the amount of grams there are in solid barium sulfate if you...Read More

2 Answers

660 views

What type of chemical reaction involving gases would be the forward reaction favored by an increase in pressure?

N. Kingsley, Writer
Answered: Feb 13, 2019

The correct answer to this question could be A + B ↔ AB. When dealing with pressure, you need to count the number of moles on both sides of the equation. If there is an increase in pressure,...Read More

2 Answers

642 views

What is the rate of disappearance for NOBr if the rate of appearance in 0.180mol/Ls?

M. Parker, Internet Researcher
Answered: Feb 21, 2019

The answer to this is 0.360 mol / L· s. In order to find the answer, you can just refer to the numbers given plus the given reaction. These will be your clues about what you should do to solve...Read More

2 Answers

640 views

What is the geometry around the central atom in the following molecular model of TeF5-?

J. Shatner, Content writer
Answered: Sep 25, 2018

TeF5 is an ionic structure that results in the formation of a lattice arrangement. The Te is bound to 5 fluorine atoms which are in turn linked to other atoms around them. Hence the entire...Read More

2 Answers

633 views

Why does the rate of a chemical reaction increases as the temperature increases?

John Smith
Answered: Apr 20, 2024

At higher temperatures the particles have more energy, move faster and collide more often

1 Answer

629 views

What is the similarity between mitosis and meiosis?

K.Paul
Answered: Dec 11, 2017

The correct answer to the question is DNA replication occurs before the division of the nucleus. Although both mitosis and meiosis have different purpose, it is a truth acknowledged by everyone...Read More

2 Answers

626 views

What are the Z and A values for atom of krypton which contains 46 neutrons?

Ryanbecker
Answered: Apr 20, 2024

Z=36, a=82

1 Answer

624 views

How will the reaction equilibrium be affected by an increase in temperature for the following reaction?

Raszagil
Answered: Mar 25, 2017

Should shift to the right, endothermic reaction because of the +187 kJ. Per Le Chatelier's Principle, an increase in the temperature of the system causes equilibrium to shift away from the heat...Read More

3 Answers

622 views

Which has more mass, protons or neutrons?

M. Kennedy, Web Content Writer
Answered: Jun 28, 2018

Neutrons are known to be heavier than protons. This is because the neutron contains more mass. It has more energy too. They may seem like things that you should not know about but they can be...Read More

2 Answers

621 views

Which ionic compounds among Nal, NaBr, NaF, NaCl would be expected to have the highest lattice energy?

J. Shatner, Content writer
Answered: Sep 25, 2018

Ionic bonds are strong bonds that are a result if opposite electrostatic attractions between different ions. They are formed when an atom gives away its electron to another atom which needs it to...Read More

2 Answers

618 views

How many asymmetric carbons are present in the compound below?

John F. connor, Content Marketing executive
Answered: May 10, 2019

The answer to this is 2. An asymmetric carbon is known to be a type of carbon atom that is attached to different kinds of particles. Sometimes it can also be attached to groups of atoms. Some...Read More

2 Answers

618 views

What is the atomic number of an ion with 5 protons, 5 neutrons, and a charge of 3+?

K.Paul
Answered: Dec 11, 2017

On the periodic table, each element is assigned an atomic number. Besides showing its placement on the periodic table, the atomic number shows the number of protons located in the center of the...Read More

4 Answers

617 views

What are the properties of the products after a chemical reaction?

Mohit singh
Answered: Nov 19, 2017

It is different than the properties of reactants.

3 Answers

588 views

Why is octanol more soluble in water than octane is?

Regentschemistry
Answered: Apr 20, 2024

Octanol is a polar molecule, like water is, while octane is a nonpolar molecule. Since octanol and water have the same molecular polarities, based on "like dissolves like", octanol will dissolve in...Read More

1 Answer

587 views

Chemistry Questions and Answers (Q&A)

Related Topics Of Chemistry

Related