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3 years ago

An igneous rock has a coarse texture and is dark in color. How else can this rock be accurately described?

Chemistry

1 answer:

Katen [24]3 years ago

5 0

Answer:

produced from magma

Explanation:

it is formed when the rock cools from being magma or lava

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WILL GIVE BRAINLIST

8_murik_8 [283]

I would choose C bc if u look at it closely u can notice it goes up steadily and then BANG it decreases a lot

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3 years ago

What is true about all chemical equations? Links are reported

Vanyuwa [196]

Answer:Your answer is A

Explanation:

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3 years ago

3.) All matter has both physical and chemical properties. A physical property is one that does not change the chemical nature of

dexar [7]

Answer:

Explanation:

It would be D because you are observing the reaction and don’t change anything

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3 years ago

The CRC Handbook, a large reference book of chemical and physical data, lists two isotopes of indium (). The atomic mass of 4.28

ivanzaharov [21]

Answer: The mass of second isotope of indium is 114.904 amu

Explanation:

Average atomic mass of an element is defined as the sum of masses of each isotope each multiplied by their natural fractional abundance.

Formula used to calculate average atomic mass follows:

.....(1)

Let the mass of isotope 2 of indium be 'x'

For isotope 1:

Mass of isotope 1 = 112.904 amu

Percentage abundance of isotope 1 = 4.28 %

Fractional abundance of isotope 1 = 0.0428

For isotope 2:

Mass of isotope 2 = x amu

Percentage abundance of isotope 2 = [100 - 4.28] = 95.72 %

Fractional abundance of isotope 2 = 0.9572

Average atomic mass of indium = 114.818 amu

Putting values in equation 1, we get:

$114.818=[(112.904\times 0.0428)+(x\times 0.9572)]\\\\x=114.904amu$

Hence, the mass of second isotope of indium is 114.904 amu

4 0

3 years ago

When salt dissolves in water, the water molecules are attracted by dissolves salt particles. This attraction is called ?

Elza [17]

When salt dissolves in water, the water molecules are attracted by dissolves salt particles. This attraction is called dissociation.

Hope this helps you. Do mark me as brainliest.

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3 years ago