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kati45 [8]
3 years ago
14

10 POINTS!! ANSWER FAST!!

Chemistry
2 answers:
Law Incorporation [45]3 years ago
8 0
Igneous rock is formed by the cooling of magma and lava. Sedimentary rock is formed over different minerals building on top of each other overtime creating layers.
andrew11 [14]3 years ago
3 0
Igneous is made of hot substances, while sedimentary is made up of precipitation. <span />
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Silicon has 2 isotopes, Silicon-28 with an abundance of 90% and Silicon-30 with an abundance of 10%. Find the AAM for Silicon.
JulsSmile [24]

Answer:

RAM

RAM = (mass \: of \:  ^{28} Si \:  \times \%abundance) + (mass \: of \:  ^{30} Si \:  \times \%abundance) \\ RAM = (28 \times 90\%) + (30 \times 10\%) \\ RAM = 25.2 + 3 \\ RAM = 28.2

5 0
3 years ago
How much energy is required to vaporize 185 g of butane at its boiling point? the heat of vaporization for butane is 23.1 kj/mol
Diano4ka-milaya [45]
Answer is: 73.52 kJ<span> of energy is required to vaporize butane.
</span>m(C₄H₁₀) = 185 g.
n(C₄H₁₀) = m(C₄H₁₀) ÷ M(C₄H₁₀).
n(C₄H₁₀) = 185 g ÷ 58.12 g/mol.
n(C₄H₁₀) = 3.18 mol; amount of butane.
Hvap = 23.1 kJ/mol; <span>the heat of vaporization for butane.
</span>Q = Hvap · n(C₄H₁₀).
Q = 23.1 kJ/mol · 3.18 mol; energy.
Q = 73.52 kJ.

4 0
4 years ago
The change from liquid to solid, or the reverse of melting, is called
Salsk061 [2.6K]
Wen a liquid turns into solid it loses thermal energy D freezing
3 0
4 years ago
Read 2 more answers
Describing Diffusion
yaroslaw [1]

Answer:

its the 3rd option.

the molecules move from region of higher concentration to a region of lower concentration.

Explanation:

please do give me brainliest if this helped you.

thank you and have a great day :D

3 0
3 years ago
Heptane and water do not mix, and heptane has a lower density (0.684 g/mL) than water (1.00 g/mL). A graduated cylinder contains
Alekssandra [29.7K]

Answer:

TRY HARD!

Explanation:

DO UR WORK ANG GET IT DONE!

3 0
1 year ago
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