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Dmitriy789 [7]
3 years ago
15

In general, if a body of mantle (source) rock is subjected to partial melting, the magma that is produced is expected to be ____

____. A. identical in chemical composition to the source rock B. more mafic than the source rock C. more felsic than the source rock D. less dense than the source rock
Chemistry
1 answer:
Yanka [14]3 years ago
4 0

Answer:  D

Explanation:

im not sure if its wright or not

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What structure do bacteria cells have
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Crude oil is trapped between a porous rock layer and an impermeable layer.<br> True or False
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2 years ago
Which of the following metals will react with water to produce a metal hydroxide and hydrogen gas?
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7 0
3 years ago
1) What mass of Na2CO3 is required to make 50cc of its seminormal solution?
love history [14]

Answer:

m=1.325gNa_2CO_3

Explanation:

Hello,

In this case, by considering the given seminormal solution, we infer it is a 0.5-N solution which means that we can obtain the equivalent grams as shown below for the 55 cc (0.055 L) volume:

eq-g=0.5eq-g/L*0.050L=0.025eq-g

Next, since sodium carbonate has two sodium ions with a +1 oxidation state each, we can obtain the moles:

mol=0.025eq-gNa_2CO_3*\frac{1molNa_2CO_3}{2eq-gNa_2CO_3}\\ \\mol=0.0125molNa_2CO_3

Finally, the mass is computed by using its molar mass (106 g/mol)

m=0.0125molNa_2CO_3*\frac{106gNa_2CO_3}{1molNa_2CO_3} \\\\m=1.325gNa_2CO_3

Regards.

7 0
3 years ago
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