0

Guest

Courses New

during an investigation acientist heated 2.76 g of silver carbonate till it decomposed to leave a silver residue. the total mass of the silver residue formed was 2.16 g. does the law of conservation of mass hold true in this case

during an investigation acientist heated 2.76 g of silver carbonate till it decomposed to leave a silver residue. the total mass of the silver residue formed was 2.16 g. does the law of conservation of mass hold true in this case

Grade:8

1 Answers

Khimraj
3007 Points
5 years ago
The equation that shows the decomposition of silver carbonate is as follows:
2Ag2CO3 .........> 4Ag + 2CO2 + O2
From the periodic table:
mass of silver = 107.8682 grams
mass of carbon = 12 grams
mass of oxygen = 16 grams
molar mass of Ag2CO3 = 2(107.8682) + 12 + 3(16) = 275.7364 grams
From the balanced equation above:
2(275.7362) = 551.4728 grams of Ag2CO3 produces 4(107.8682) = 431.4728 grams of Ag
Therefore, to know the mass of Ag produced from 2.76 grams of Ag2CO3, we will simply use cross multiplication as follows:
mass of Ag produced = (2.76*431.4728) / (551.4728) = 2.16 grams
Based on the above calculations, the law of conservation of mass is applied.

Think You Can Provide A Better Answer ?

Other Related Questions on Physical Chemistry

View all Questions »

ASK QUESTION

Get your questions answered by the expert for free

Answer and earn gift vouchers

Win Gift vouchers upto Rs 500/-

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Click Here Know More

Complete Self Study Package designed by Industry Leading Experts

Click Here Know More

Live 1-1 coding classes to unleash the Creator in your Child

Click Here Know More

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Click Here Know More