# Chemistry

I am a bit lost as to how to go about answering this question. Any help will be appreciated.

When 1.40g of hydrated magnesium sulphate is heated to constant mass, 0.68g of the anhydrous salt remains. Find the formula for the hydrated magnesium sulphate.

Write the balanced equation:

MgSO4xH2O >> MgSO4 + x H2O

so the question is , what it the value of x?

You have .68g of MgSO4, calculate the number of moles that is. That will also be the number of moles of MgSO4 of the hydrated salt.

Now you have
N MgSO4.xH2O and you know N.

But you also know that there are 1.40-.68g water, so calculate the number of mole of water that is. Call that number M.

Nx= M
solve for x

1. 👍 0
2. 👎 0
3. 👁 178
1. tuhilydr nsdht jqixz zfjegmurw uxnopstw ysun gqutx

1. 👍 0
2. 👎 0

## Similar Questions

1. ### Euclids Algorithm

Sorry this is a really stupid question. Ive been going back to basics and im a bit lost (probably tired so I cant see the obvious) so im working out 87v+38w=d ive done the basics pretty well and have d=1. Now backwards

asked by Anon on May 18, 2017
2. ### Economics/ Free Enterprise

What is "Guns or Butter"? Also what is a Production Possibilities curve? I'm a bit confused. Thank you so much whoever is answering this question (:

asked by CP on August 17, 2011
3. ### Damon

I have a question for Damon. Thank you for answering my question although you lost me when you came up with 37153 instead of 27153. Was this a typo or am I missing sonthing? IF anyone else can tell me I would like the help.

asked by Rich on December 20, 2009
4. ### Science

I am having a bit of trouble answering the below question. Describe what happens to the forces (balanced or unbalanced) as it slows down to go around a corner? I am not sure on this at all. Please help

asked by Patrick on September 8, 2018
5. ### Need some clarification...... plzz

I am having a bit of trouble answering this question.... DO you mind giving a brief explanation of what it means and, if possible, some hints on possible answers? In what ways did the indigenous societies and the revolution in

asked by Martha on October 18, 2008
6. ### Math

Hey! So, I've been working on this problem for awhile but I'm currently a bit dumbfounded on how to solve it. I think this question has been answered before but I still don't quite understand how it works or how to explain it. The

asked by Z on June 20, 2016
7. ### Algebra

Bob thanks for answering my question, it still seems a tad bit confusing as i was thinking to use a quadratic expression formula. the formula you used is a rational expression correct??

asked by Stacy on November 10, 2009
8. ### Thanking tutors

Hello my name is Essence I am in the fourth I want to say thank you to all the helpers answering all silly and meaningful questions and helping kids like me in every subject so I want to say thank you from me and everyone who

asked by Essence loves math on January 30, 2016
9. ### Maths

Have a question on complex numbers. Z1= 1+j2, Z2= 2+j5 Find total impedance in Cartesian and polar form of two impedances in parallel: 1/ZT = 1/Z1 + 1/Z2 I get to 39/58 + 83/58 j but then get a bit lost.

asked by Danny on May 20, 2015
10. ### English

Which of the following is a good test-taking strategy when answering an essay question? 1.(Think about what you want to say and create a brief bulleted list or organizer before you begin writing.) 2.Write as much as you can as

asked by Help I need somebody not just anybody on January 20, 2017

More Similar Questions