Will Fan and Medal! A mixture of Mg(NO3)2 and its hydrate Mg(NO3)2x2H20 has a mass of 1.9151g. After heating to drive off all the water, the mass is only 1.7376g. What is the weight percentage of Mg(NO3)2xH2O in the original mixture. report your answer to 4 sig figs. Molar masses: Mg(NO3)2->148.31 g/mol; Mg(NO3)2xH2O 184.34 g/mol

At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

Get our expert's

answer on brainly

SEE EXPERT ANSWER

Get your free account and access expert answers to this and thousands of other questions.

A community for students.

Will Fan and Medal! A mixture of Mg(NO3)2 and its hydrate Mg(NO3)2x2H20 has a mass of 1.9151g. After heating to drive off all the water, the mass is only 1.7376g. What is the weight percentage of Mg(NO3)2xH2O in the original mixture. report your answer to 4 sig figs. Molar masses: Mg(NO3)2->148.31 g/mol; Mg(NO3)2xH2O 184.34 g/mol

Chemistry
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

Get this expert

answer on brainly

SEE EXPERT ANSWER

Get your free account and access expert answers to this and thousands of other questions

Since heating gets rid of all the water, the mass difference before and after heating is the mass of the water: 1.9151 - 1.7376 = 0.1775 g Converting this to moles will allow you to find how much Mg(NO3)2 it was associated with (note - molar mass of water is 18 g/mol): 0.1775 / 18 = 0.009861 mol There are 2 water molecules for every 1 unit of Mg(NO3)2x2H2O. That means for however many moles of water you have, there are HALF as many moles of Mg(NO3)2x2H2O. This means you have 0.009861 / 2 = 0.004930 mol of Mg(NO3)2x2H2O. The mass of 0.004930 mol of Mg(NO3)2x2H2O is: 0.004930 x 184.34 = 0.9088 g As a percentage of the mass of the original mixture, it is: 0.9088 / 1.9151 x 100 = 47.45% Let me know if you have any questions!

Not the answer you are looking for?

Search for more explanations.

Ask your own question

Other answers:

Not the answer you are looking for?

Search for more explanations.

Ask your own question