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3 years ago

What is the scientific term for rocks formed from magma?

Chemistry

2 answers:

mihalych1998 [28]3 years ago

8 0

I think it's D but not sure

ziro4ka [17]3 years ago

6 0

<h3><u>Answer;</u></h3>

<em>B. intrusive </em>

<h3><u>Explanation;</u></h3>

Igneous rocks are among the major types of rocks, that are formed when magma or molten rocks found on the underneath of the surface of the earth, rise up, cool down and then solidify.
Igneous rocks may either be extrusive or intrusive rocks.

<u><em>Intrusive rocks</em></u> are types of rocks that are formed when magma cools down and solidifies under the earth's surface, resulting to rocks.
<u><em>Extrusive rocks </em></u>results when magma solidifies over the surface of the earth.

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2 years ago

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nydimaria [60]

Answer : 50.69 mg of ascorbic acid does not meet the daily requirement.

Solution : Given,

Molar mass of Ascorbic acid = 176 g/mole

Moles of Ascorbic acid = $2.88\times 10^{-4}moles$

Formula used :

$Moles=\frac{Mass}{\text{ Molar mass}}$

or, $\text{ Mass of ascorbic acid}=\text{ Moles of ascorbic acid}\times \text{ Molar mass of ascorbic acid}$

Now put all the given values in this formula, we get the mass of ascorbic acid.

$\text{ Mass of ascorbic acid}=(2.88\times 10^{-4}moles)\times (176g/mole)=0.050688g=50.69mg$

Conversion : $(1g=1000mg)$

As per question, a healthy adult’s daily requirement of vitamin C is 70-90 mg. But calculate mass of vitamin C is 50.69 mg. So, 50.69 mg of ascorbic acid does not meet the daily requirement.

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3 years ago

How much CO2 is produced from the decomposition of 200g of CaCO3 if 112 of CaO are produced?

MArishka [77]

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