Question 1

When the equation __ C₅H₆N₂OS(s)+ __ O₂(g)→ __ CO₂(g)+ __ H₂O(l)+ __ N₂(g)+ __ SO₂(g) Is balanced,the sum of all the coefficients (simplest whole number)is

Accepted Answer

The answer of When the equation __ C₅H₆N₂OS(s)+ __ O₂(g)→ __...

Question 2

_____ are very light,negatively charged particles that exists in the region around an atom's positively charged nucleus.

Accepted Answer

Electrons are negatively charged particles that orbit around the positively charged nucleus of an atom. They are much lighter than protons and neutrons, and they play a crucial role in chemical bonding and electricity.

Question 3

A _____ is the symbolic representation of a chemical reaction in terms of chemical formulas.

Accepted Answer

A chemical equation is the symbolic representation of a chemical reaction in terms of chemical formulas. It shows the reactants and products of a chemical reaction and their respective quantities. Choices A, B, C, and D are not accurate definitions of a chemical equation.

Question 4

Which of the following chemical equations is not balanced?

Accepted Answer

The equation in option D is not balanced because the number of nitrogen atoms on the reactant side is 2, but only 1 nitrogen atom is present in the product side as N2O.

Question 5

Which of the following equations is not balanced?

Accepted Answer

The answer of Which of the following equations is not...

Question 6

An important class of molecular substances that contain carbon combined with other elements,such as hydrogen,oxygen,and nitrogen,is _____.

Accepted Answer

Organic compounds are molecular substances that contain carbon combined with other elements such as hydrogen, oxygen, and nitrogen. In contrast, inorganic compounds do not contain carbon-hydrogen bonds. Radioactive isotopes refer to atoms with unstable nuclei, while stable isotopes have a stable nucleus with the same number of protons and neutrons.

Question 7

When the equation __ (CH₃)₂NNH₂ + __ N₂O₄ → __ N₂ + __ H₂O + __ CO₂ Is balanced,the sum of all the coefficients (simplest whole number)is

Accepted Answer

The answer of When the equation __ (CH₃)₂NNH₂ + __ N₂O₄...

Question 8

Which one of the following equations is properly balanced?

Accepted Answer

The answer of Which one of the following equations is...

Question 9

Ammonia can be made by reaction of water with magnesium nitride: __ Mg₃N₂(s)+ __ H₂O(l)→ __ Mg(OH)₂(s)+ __ NH₃(g) When the equation is properly balanced,the sum of the coefficients is

Accepted Answer

To balance the equation, we need 3 Mg3N2 + 6 H2O → 3 Mg(OH)2 + 2 NH3. The sum of the coefficients is 3 + 6 + 3 + 2 = 14, so the best choice is (B), which is closest to 14. However, since there is no option for 14, the closest choice is (C), which is 12.

Quiz 2: Atoms, molecules, and Ions

When the equation C₅H₆N₂OS(s) + O₂(g) → CO₂(g) + H₂O(l) + N₂(g) + SO₂(g) Is balanced,the sum of all the coefficients (simplest whole number) is

_____ are very light,negatively charged particles that exists in the region around an atom's positively charged nucleus.

A _____ is the symbolic representation of a chemical reaction in terms of chemical formulas.

Which of the following chemical equations is not balanced?

Which of the following equations is not balanced?

An important class of molecular substances that contain carbon combined with other elements,such as hydrogen,oxygen,and nitrogen,is _____.

When the equation (CH₃) ₂NNH₂ + N₂O₄ → N₂ + H₂O + __ CO₂ Is balanced,the sum of all the coefficients (simplest whole number) is

Which one of the following equations is properly balanced?

Ammonia can be made by reaction of water with magnesium nitride: Mg₃N₂(s) + H₂O(l) → Mg(OH) ₂(s) + NH₃(g) When the equation is properly balanced,the sum of the coefficients is

Quiz 2: Atoms, molecules, and Ions

When the equation __ C5H6N2OS(s) + __ O2(g) → __ CO2(g) + __ H2O(l) + __ N2(g) + __ SO2(g) Is balanced,the sum of all the coefficients (simplest whole number) is

_____ are very light,negatively charged particles that exists in the region around an atom's positively charged nucleus.

A _____ is the symbolic representation of a chemical reaction in terms of chemical formulas.

Which of the following chemical equations is not balanced?

Which of the following equations is not balanced?

An important class of molecular substances that contain carbon combined with other elements,such as hydrogen,oxygen,and nitrogen,is _____.

When the equation __ (CH3) 2NNH2 + __ N2O4 → __ N2 + __ H2O + __ CO2 Is balanced,the sum of all the coefficients (simplest whole number) is

Which one of the following equations is properly balanced?

Ammonia can be made by reaction of water with magnesium nitride: __ Mg3N2(s) + __ H2O(l) → __ Mg(OH) 2(s) + __ NH3(g) When the equation is properly balanced,the sum of the coefficients is

When the equation C₅H₆N₂OS(s) + O₂(g) → CO₂(g) + H₂O(l) + N₂(g) + SO₂(g) Is balanced,the sum of all the coefficients (simplest whole number) is

When the equation (CH₃) ₂NNH₂ + N₂O₄ → N₂ + H₂O + __ CO₂ Is balanced,the sum of all the coefficients (simplest whole number) is

Ammonia can be made by reaction of water with magnesium nitride: Mg₃N₂(s) + H₂O(l) → Mg(OH) ₂(s) + NH₃(g) When the equation is properly balanced,the sum of the coefficients is