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Ilya [14]
3 years ago
13

Which phrase best describes igneous rock

Chemistry
2 answers:
kozerog [31]3 years ago
5 0

Answer: a

Explanation:

Luden [163]3 years ago
4 0
Forms when lava and magma cool (A)
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Prepare a 0.50 L of a 1.0 M solution of potassium sulfate. Determine the amount of potassium sulfate needed in correct significa
Lera25 [3.4K]

Answer:

B) 87g

Explanation:

Usatestprep said it

3 0
3 years ago
Which property of fossil fuel make them an important resource for life on earth
grandymaker [24]

Fossil Fuels give off energy when they are burned

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7 0
2 years ago
What is the temperature of a gas that is expanded from 3.75 L at 37 degrees Celsius to 5.6 L?
deff fn [24]

Answer:

190 °C  

Step-by-step explanation:

The pressure is constant, so this looks like a case where we can use <em>Charles’ Law</em>:  

V₁/T₁ = V₂/T₂      Invert both sides of the equation.  

T₁/V₁ = T₂/V₂      Multiply each side by V₂

T₂ = T₁ × V₂/V₁

=====

V₁ = 3.75 L; T₁ = (37 + 273.15) K = 310.15 K  

V₂ = 5.6 L;   T₂ = ?  

=====

T₂ = 310.15 × 5.6/3.75

T₂ = 310.15 × 1.49

T₂ = 463 K

t₂ = 463 – 273.15

t₂ = 190 °C

3 0
3 years ago
On molecular level what I causing the glaciers to melt
MakcuM [25]
Glaciers capture large amount of carbon dioxide from atmosphere. When concentration of carbon dioxide molecules in glaciers increase, then strength and fracture toughness of ice are decreased and <span>that make glaciers vulnerable to cracking and splitting into fragments.
</span>That is because hydrogen bonds between water molecules in glaciers is decreased under increasing concentrations of carbon dioxide who <span>competes with the water molecules connected in the ice crystal.</span>
6 0
3 years ago
What is the ph of a solution with [h+] = 2.3 10-9?
oksano4ka [1.4K]
pH = -log[H+] = -log[2.3*10^-9] = 8.64
8 0
3 years ago
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