Questions 1. On analysis, a compound was found to contain 11.64 g of sodium, 16.20 g of sulfur and 12.15 g of oxygen. Determine the empirical formula of the compound.

2. A liquid used in a rocket fuel is found to consist of 3.04 g of nitrogen and 6.94 g of oxygen. The molar mass of the compound is 92 g mol-1. Determine the molecular formula of the compound.

3. Calculate the percentage composition of hydrogen, sulfur and oxygen in sulphuric acid, H2SO4.

4. Determine the percentage, by mass, of carbon in aluminium carbonate, Al2(CO3)3.

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can you attach a picture of the lettuce? : )

answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.

what is the average time it took the car to travel 0.25 meters?

⇒ 2.23 seconds

what is the average time it took the car to travel 0.50 meters?

⇒ 3.13 seconds

i believe the answer is three water molecules