What are homogeneous mixtures of metals commonly called? alloys colloids compounds suspensions

The homogeneous mixtures of metals are commonly called alloys. The correct option among all the options that are given in the question is the first option. Good example of homogeneous mixture of metals or alloys are steel and bronze. They are a mixture of two metals and hence can be called alloys. 

Actual yield for the reaction is 38.5 g of NaCl

Explanation:

The balanced equation is this:

2 Na(s) + Cl₂ (g) → 2NaCl (s)

Ratio is 2:2. Let's determine the moles of sodium metal that has reacted.

17.25 g . 1 mol /23 gl = 0.75 moles

0.75 moles of Na were  used to produced 0.75 moles of NaCl, according to the equation.

Let's determine the mass of NaCl, that were produced.

0.75 mol . 58.45 g / 1 mol = 43.8 g

43.8 will be the theoretical yield (100%). Let's determine the 88%.

(Yield reaction / Theoretical yield) . 100 = 88

Yield reaction / 43.8 g = 88 / 100

Yield reaction = 0.88 . 43.8 g → 38.5  g