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rosijanka [135]
3 years ago
8

HURRY PLS HELP

Chemistry
1 answer:
ratelena [41]3 years ago
8 0

<em>Scientists believe water currents within the earth's mantle are slowly causing the plates above to move </em>

<em></em>

<em>Answer: </em><u><em>True</em></u>

<u><em /></u>

<u><em>EXplanation:</em></u>

<u><em /></u>

<u><em>The common, simplified explanation for why tectonic plates are moving is that they're carried along on currents in the upper mantle, the slowly flowing layer of rock just below the Earth's crust. Converging currents drive plates into each other. Diverging currents pull them apart</em></u>

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What is oxidized in an electrolytic cell with aluminum and gold electrodes?
irina [24]

Answer:

The answer is B The aluminum metal.

Explanation:

have a wonderful day! do good in school you got this! :)

4 0
2 years ago
for the reaction C+2H2= Ch4 how many molecules of hydrogen are required to produce 14 grams of methane Ch4?
Nina [5.8K]

Answer:

mass of CH4 = 14

Molecular mass of CH4 16.04gmol

No of mole of CH4 = 14/16.04

No of mole of CH4 = 0.8728mol

Stoichiometrically, from the above

2 Molecules of Hydrogen will produce 1molecule of methane

Therefore, 2*0.8728 mole of Hydrogen will produce 0.8728mol of Methane.

The no of molecule of hydrogen is 1.7456

5 0
3 years ago
A sample of Ne gas has a pressure of 654 mmHg with an unknown volume. The gas has a pressure of 345 mmHg when the volume is 495m
Lemur [1.5K]

Answer:

The initial volume of Ne gas is 261mL

Explanation:

This question can be answered using Ideal Gas Equation;

However, the following are the given parameters

Initial Pressure = 654mmHg

Finial Pressure = 345mmHg

Final Volume = 495mL

Required

Initial Volume?

The question says that Temperature is constant;

This implies that, we'll make use of Boyle's law ideal gas equation which states;

P_1V_1 = P_2V_2

Where P_1 represent the initial pressure

P_2 represent the final pressure

T_1 represent the initial temperature

T_2 represent the final temperature

P_1 = 654mmHg\\P_2 = 345mmHg\\V_2 = 495mL

Substitute these values in the formula above;

654 * V_1 = 345 * 495

654V_1 = 170775

Divide both sides by 654

\frac{654V_1}{654} = \frac{170775}{654}

V_1 = \frac{170775}{654}

V_1 = 261.123853211

V_1 = 261mL (Approximated)

<em>The initial volume of Ne gas is 261mL</em>

7 0
3 years ago
The presence of hydrogen bond in most molecules is responsible for the following except
-Dominant- [34]
That answer is either 3 or 4, but I truly forgot which of the two.
5 0
3 years ago
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How many ligaments in e kne
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7 0
3 years ago
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