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Topic: 3 SIMPLE GRAMS AND MOLES QUESTION( PLEASE HELP ANSWER)  (Read 7765 times)

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Offline BrooklynsMVP

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3 SIMPLE GRAMS AND MOLES QUESTION( PLEASE HELP ANSWER)
« on: April 05, 2009, 07:59:47 PM »
1.) what is the mass in grams of 4.25 mol of (NH4) 2CO3?

2.) How many grams of oxygen are presented in 0.50 mol of ozone, O3?

3.)How many grams of oxygen are presented in 88.0 g of CO2?

Offline macman104

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Re: 3 SIMPLE GRAMS AND MOLES QUESTION( PLEASE HELP ANSWER)
« Reply #1 on: April 05, 2009, 08:09:40 PM »
Do you know the relationship between moles and grams?

Offline BrooklynsMVP

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Re: 3 SIMPLE GRAMS AND MOLES QUESTION( PLEASE HELP ANSWER)
« Reply #2 on: April 05, 2009, 08:13:09 PM »
YEA A LITTLE ALL I NEED IS THE ANSWERS FOR THESE QUES, THATS ALL.

Offline macman104

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Re: 3 SIMPLE GRAMS AND MOLES QUESTION( PLEASE HELP ANSWER)
« Reply #3 on: April 05, 2009, 08:14:19 PM »
We don't just give out answers.  You need to show some attempts, we help guide you to the answer.

Offline BrooklynsMVP

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Re: 3 SIMPLE GRAMS AND MOLES QUESTION( PLEASE HELP ANSWER)
« Reply #4 on: April 05, 2009, 08:18:51 PM »
LOL.. WOW SO PLEASE EXPLAIN ME HOW DO I GET THE ANSWER.

Offline macman104

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Re: 3 SIMPLE GRAMS AND MOLES QUESTION( PLEASE HELP ANSWER)
« Reply #5 on: April 05, 2009, 08:27:59 PM »
For #1, what is the molar mass of (NH4)2CO3?

Offline BrooklynsMVP

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Re: 3 SIMPLE GRAMS AND MOLES QUESTION( PLEASE HELP ANSWER)
« Reply #6 on: April 05, 2009, 09:12:18 PM »
IT IS 96.0861

Offline macman104

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Re: 3 SIMPLE GRAMS AND MOLES QUESTION( PLEASE HELP ANSWER)
« Reply #7 on: April 05, 2009, 09:21:49 PM »
If I have 5 marbles in a bucket, how many marbles do I have in 4.25 buckets?
If there are 96.0861 grams in a mole, how many grams do you have in 4.25 moles?

Offline BrooklynsMVP

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Re: 3 SIMPLE GRAMS AND MOLES QUESTION( PLEASE HELP ANSWER)
« Reply #8 on: April 05, 2009, 09:28:26 PM »
i multiplied 96 by 4.25 and i got 408 is that correct?

Offline macman104

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Re: 3 SIMPLE GRAMS AND MOLES QUESTION( PLEASE HELP ANSWER)
« Reply #9 on: April 05, 2009, 09:47:02 PM »
Yup!  But I would possibly include 96.09, or 96.086, and make your answer more accurate.

So, now #2:

How many moles of oxygen are there are in 1 mole of O3?
How many moles of oxygen are there in 0.5 moles of O3?

Now, solve the same way, use that answer and the molar mass of oxygen to find the mass.

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