A chemistry question?

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Juliano Miguel

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1. A combustion reaction occurs when oxygen and hydrocarbons react. Which of the following is the product of a combustion reaction?

a. oxygen and water
b. carbon dioxide and water
c. carbon dioxide and oxygen
d. salt and water

2. The ratio of the number of moles of one element or compound with the moles of another element or compound is called the ________.

3. If given the following reaction, how many moles of chlorine are produced from 5 moles of MgCl2 decomposing? RXN: MgCl2 --> Na + 2Cl

a. 1 mole
b. 5 moles
c. 10 moles
d. 20 moles

4. A combustion reaction occurs when oxygen and hydrocarbons react. Which of the following is the product of a combustion reaction?
a. oxygen and water
b. carbon dioxide and water
c. carbon dioxide and oxygen
d. salt and water
 
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