Describing Chemical Reactions

Question 1

Examine the chemical reaction.

Revolt · Accepted Answer

5

Question 2

Which additional product balances the reaction H2SO4 + 2NaOH → Na2SO4 + ________?

Revolt · Accepted Answer

2H2O

Question 3

Leslie incorrectly balances an equation as 2C4H10 + 12O2 → 8CO2 + 10H2O.

Revolt · Accepted Answer

12

Question 4

Which equation best represents the law of conservation of mass?

Revolt · Accepted Answer

mass of reactants = mass of products

Question 5

For the equation 3Cu + 8HNO3 → 3Cu(NO3)2 + 2NO + 4H2O, how many units of NO3 are represented on the products side?

Revolt · Accepted Answer

6

Question 6

What can the arrow in a chemical reaction be translated to mean? Check all that apply.yieldsaccompanied byreact to formadded toexcept

Revolt · Accepted Answer

yields; react to form

Question 7

Rust results from iron’s reaction to oxygen. An iron nail gains mass when it rusts. How does this reaction support the law of conservation of mass?

Revolt · Accepted Answer

The mass of the rusted nail equals the mass of iron and the oxygen from the air it reacted with to form the rust.

Question 8

The product side of a chemical reaction is shown.→ 7Ti2(SO4)3

Revolt · Accepted Answer

7

Question 9

The expression CaCO3 → CaO + CO2 is an example of a

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chemical equation.

Question 10

Cecil writes the equation for the reaction of hydrogen and oxygen below.H2 + O2 → H2O

Revolt · Accepted Answer

to show that atoms are conserved in chemical reactions

Describing Chemical Reactions Answers