Question

CALCULATE THE MASS OF 4.2 MOLES OF CA(NO3)2

Answer 1

Answer:

Given mass of Ca(NO3)2 = 10 grams

molar mass of Ca(NO3)2 = 40+28+96=164g/mol

moles of Ca(NO3)2 = given mass/molar mass

moles = 10 g/164 g/mol = 0.060 moles

Each Ca(NO3)2 has 2 NO3- ions, so

moles of NO3- = 2 x moles of Ca(NO3)2

= 2 x 0.060 moles

Moles of NO3- = 0.121 moles

Explanation:

pls mark as brainliest hope it helps