If a sample of gallium totals 1.22 mol, what is the mass of the sample?

a. 85.06 g
b. 0.01176 g
c. 57.15 g
d. 1.00 g

Question

contestada

Respuesta :

joseaaronlara joseaaronlara · Answer 1 · 2020-03-23T00:39:12+01:00

Answer:

The answer to your question is the letter a. 85.06 g

Explanation:

Data

1.22 moles of Ga

Process

1.- Look for the Atomic mass of Ga in the periodic table

Atomic mass = 69.72 g

2.- Use proportions to calculate the moles of Ga

69.72 g ------------------- 1 mol

x ------------------- 1.22 moles

x = (1.22 x 69.72) / 1

x = 85.06/ 1

x = 85.06 g og Ga

thomasdecabooter thomasdecabooter · Answer 2 · 2020-03-23T02:51:59+01:00

Answer:

The mass of this gallium sample is 85.06 grams ( option A is correct).

Explanation:

Step 1: Data given

Number of moles of galium = 1.22 moles

Atomic mass of galium = 69.723 g/mol

Step 2: Calculate mass of gallium

Mass of gallium = moles gallium * molar of gallium

Mass of gallium = 1.22 moles * 69.723 g/mol

Mass of gallium = 85.062 ≈ 85.06 grams

The mass of this gallium sample is 85.06 grams ( option A is correct).