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2 years ago

How many moles are in 30g of C12H22O11?

Chemistry

2 answers:

Yuki888 [10]2 years ago

4 0

You first want to set up an equation like the one I did then you break down

C12H22O11 and find their molar masses C= (how ever many you have which is 12) x molar mass 12.011= 144.132
H = 22 x 1.008 = 22.176
O= 11 x 15.999 =175.989

And then you add 144.132 + 22.176 + 175.989= 342.297g (that’s your molar mass for C12H22O11 ) and then you want to divide it by the 30g you already have because you want to cancel out grams and get moles.

Nastasia [14]2 years ago

3 0

Answer:

342.29648 grams

Explanation:

Good luck

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3 years ago

If you mix 4.5 g of hcl in enough water to make 0.9 l (900 ml of solution, what is the molarity of the solution?

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If they gave you the volume as 900 mL, then that would be 3 sig figs. And the sig figs would be limited to 2 because the mass.If, however, they gave you the volume as 0.9 L, then that would be 1 sig fig. And the final answer would be limited to to 1 sig fig.

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3 years ago

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Now we have to balance the electrons of the half reactions. When we are multiplying the equation (1) by 2, we get

$2NO_3^-+4H^++2e^-\rightarrow 2NO_2+2H_2O$ ...........(3)

Now we have to add both the half reactions (2) and (3), we get the final balanced chemical reaction.

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Explanation:

Hope this helps, have a great day. God Bless you.

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