Question

how many moles of copper are present in a sample of tennantite with a mass of 2890 grams? moles cu

Explanation:

Step1: Recall molar - mass of copper

The molar mass of copper (Cu) is approximately 63.55 g/mol.

Step2: Use the mole - mass formula

The formula to calculate the number of moles (n) is $n=\frac{m}{M}$, where m is the mass and M is the molar mass. Given m = 2890 g and M = 63.55 g/mol.
$n=\frac{2890}{63.55}\approx45.5$

Answer:

45.5