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olasank [31]
2 years ago
8

Identify the arrows that represent the process of cooling. gas liquid

Chemistry
1 answer:
olga nikolaevna [1]2 years ago
3 0

Answer:

Liquid - Gas is Evaporation & Gas - Cooling is condensation

Explanation:

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I need help with this because it's easy for you guys but I don't understand it
WARRIOR [948]

Answer:

from nitrogen fixation in plants, lightning and bacteria

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3 0
3 years ago
Most minerals on earth's surface contain what
muminat
The answer is silicates!!! Hope this helps!!!
8 0
3 years ago
if 1.386 g of mg ribbon combusts to form 2.309 g of oxide product, calculate the experimental mass percent of oxygen from this d
Pavlova-9 [17]

1.386 g of Mg ribbon combusts to form 2.309 g of oxide product. The mass percent of oxygen in the oxide is 40.0 %.

Let's consider the reaction for the combustion of Mg.

Mg + 1/2 O₂ ⇒ MgO

1.386 g of Mg combusts to form 2.309 g of MgO. We want to determine the mass of oxygen in MgO. According to Lavoisier's law of conservation of mass, matter is not created nor destroyed over the course of a chemical reaction. Then, the mass of Mg in the reactants is equal to the mass of Mg in MgO. The mass of the magnesium oxide is the sum of the masses of magnesium and oxygen. The <u>mass of oxygen in the oxide</u> is:

mMgO = mMg + mO\\mO = mMgO - mMg = 2.309 g - 1.386 g = 0.923 g

We can calculate the mass percent of O in MgO using the following expression.

\% O = \frac{mO}{mMgO} \times 100\% = \frac{0.923 g}{2.309g} \times 100\%  = 40.0 \%

You can learn more about mass percent here: brainly.com/question/14990953

3 0
1 year ago
3. Clouds absorb some of the heat that is emitted
V125BC [204]

Answer:

B. This process warms Earth's surface.

8 0
3 years ago
How many hydrogen atoms are in 3 molecules of ethyl alcohol, C2H3OH
Andrew [12]

Answer: 3 hydrogen atoms

Explanation: H=hydrogen

8 0
3 years ago
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