Question

use the following balanced equation to answer the questions: 3rb + p → rb₃p there are 3 moles of rb present. the molar mass of rubidium is 85.47 g/mol. what mass of rubidium is present?

Explanation:

Step1: Recall mass - mole relationship formula

The formula to calculate mass ($m$) from moles ($n$) and molar mass ($M$) is $m = n\times M$.

Step2: Identify values of $n$ and $M$

We are given that $n = 3$ moles (number of moles of Rb) and $M=85.47$ g/mol (molar mass of Rb).

Step3: Calculate the mass

Substitute the values into the formula: $m=3\ mol\times85.47\ g/mol$.
$m = 256.41$ g

Answer:

256.41 g