An organic liquid is a mixture of methyl alcohol (ch3oh) and ethyl alcohol (c2h5oh). a 0.220-g sample of the liquid is burned in an excess of o2(g) and yields 0.386 g co2(g) (carbon dioxide). set up two algebraic equations, one expressing the mass of carbon dioxide produced in terms of each reagent and the other expressing the mass of sample burned in terms of each reagent. what is the mass of methyl alcohol (ch3oh) in the sample?

the mass of methyl alcohol (CH3OH) in the sample is 0.0641 g

Explanation:

1. Preliminars;

2. Algebraic equation # 1: mass of sample burned in terms of each reagent.

3. Algebraic equation # 2: mass of carbon dioxide produced in terms of each reagent.

a) Combustion of methyl alcohol

b) Combustion of ethyl alcohol

c) Mass of CO₂ (g) obtained, in terms of each reagent

4) System of equations

5) Solution

 the mass of methyl alcohol (CH3OH) in the sample is 0.0641 g

- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms