Question

Convert 1.93×10⁻⁶ moles to micrograms of chromium.

A) 68.97μg
B) 54.94 μg
C) 34.08 μg
D) 25.35 μg

Answer 1

To convert 1.93 x 10-6 moles of chromium to micrograms, you can use the molar mass of chromium and the conversion factor of 1000.

Step-by-step explanation:

To convert moles to mass, we need to use the molar mass of chromium. The molar mass of chromium is 51.996 grams per mole. So, to convert 1.93 x 10-6 moles of chromium to grams, we can use the following calculation:

Mass (g) = moles x molar mass

Mass (g) = 1.93 x 10-6 moles x 51.996 g/mol

Mass (g) = 1.00018308 x 10-4 grams

To convert grams to micrograms, we need to multiply by 1000. So, the answer is 1.00018308 x 10-1 micrograms or approximately 10.0 micrograms.