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

What is the empirical formula of the compound whose molecular formula is P4O10?

John Smith
Answered: Apr 23, 2024

Pv2Ov5

Take Pv4Ov10 and reduce it to the smallest whole number ratio of atoms. In math this would be called reducing to lowest terms. Pv4Ov10 reduced by 2 equals Pv2Ov5.

1 Answer

903 views

Is the molecule shown chiral or achiral?

John Adney
Answered: Oct 07, 2017

Because there is an axis of symmetry, the molecule is considered to be achairalbecause of the presence of such axis

2 Answers

896 views

What is the molecular polarity of NCl3 and why?

Regentschemistry
Answered: Apr 23, 2024

It is polar, because its charges are distributed asymmetrically and its geometric shape is asymmetrical.

Polar Molecules: 2 or more lines of symmetry when you cut through the middle of the...Read More

1 Answer

878 views

How many asymmetric carbons are present in the compound below?

E. Stanley, Technical writer
Answered: Feb 01, 2019

There is only one asymmetric carbon. An asymmetric carbon is also known as a chiral carbon. This is attached to four different types of atoms. At times, it is connected to four different groups...Read More

2 Answers

877 views

When do two atoms become isotopes?

Samantha Stewart, Philanthropist
Answered: Dec 07, 2018

The correct answer is answering : 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 three...Read More

3 Answers

874 views

Which element in Group 15 has the strongest metallic character?

W. Wright, Biology student
Answered: Mar 07, 2019

Bismuth (Bi) is a metallic element. Bi is a poor metal it is similar to the arsenic and antimony. It is the last element in the group which makes it the most metallic; it has the lowest...Read More

2 Answers

849 views

What is the best reason for using iron filings instead of an iron nail in a chemical reaction?

CECHS
Answered: Apr 23, 2024

To increase the surface area of the reaction

1 Answer

847 views

What are the bond angles in the following molecular model of NH4+?

Marshall_Bailey
Answered: Apr 23, 2024

109.5 degrees

1 Answer

791 views

What can you conclude from the following statement?

Soberlander
Answered: Apr 23, 2024

Plant A has many characteristics in common with B.

1 Answer

790 views

What can be said of a closed system when an exothermic reaction proceeds in an aqueous solution?

CECHS
Answered: Apr 23, 2024

Heat is transferred from the reactants to the water.

1 Answer

789 views

Which of the following gases would have the fastest rate of diffusion, assuming all of the gases are at the same temperature?

J. Harty, Writer
Answered: May 23, 2019

Diffusion has to do with movement and the concentration of the molecules in the substance. Therefore, when the molecules in a material begin in a higher concentration, and then they start moving,...Read More

2 Answers

779 views

What is the process that would most likely be responsible for the movement of glucose from inside the artificial cell to the solution outside of the cell?

G. Horace, Content Developer
Answered: Dec 26, 2018

This is easily diffusion. Osmosis is the movement of water to help keep the balance of water inside and outside a cell. However, diffusion occurs when there are small particles that can easily...Read More

3 Answers

777 views

What is sugar called in sweetened tea?

John Adney
Answered: Nov 20, 2017

The sugar in a sweetened tea is the exact same as sugar in water/tea. In this case, the tea is the solute and the water is the solvent. This is because the solvent (water) is the one dissolving...Read More

2 Answers

769 views

What is the chemical formula for aluminum sulfate?

M. Porter, Senior Executive
Answered: Apr 10, 2019

The correct answer to this question is AI2 (SO4)3. Aluminum Sulfate is a chemical compound, which has a crystal structure. Its' molar mass is 342.15 g/ mol. Aluminum Sulfate is created by adding...Read More

2 Answers

760 views

What effect does scratching a tin-plated (iron) object have on the rate of corrosion?

Ken Wilson, Marketing Analyst
Answered: Jan 31, 2019

Because a tin plate is dense and resistant to prevent further oxidation, if you take a noncorroding material, such as brass and scratch away some of the surface exposing new material, then the...Read More

2 Answers

749 views

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