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Andrews [41]
3 years ago
12

What SI unit is used to measure the number of representative particles in a substance?

Chemistry
1 answer:
Galina-37 [17]3 years ago
4 0

Answer:

SI unit for number of representative particle is MOLE.

Explanation:

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Anthracite is so hard and pure it is also referred to as a _____. renewable resource metamorphic rock hot bituminous coal dirty
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Anthracite is so hard and pure it is also referred to as a metamorphic rock. renewable resource metamorphic rock hot bituminous coal dirty fuel

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3 years ago
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What are some possible replacements for Tin (Sn)?? Help ASAP!!!!!!!!
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Answer:

Lead I think is one I'm not completely sure but I know they're similar in some ways

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Describe the kinds of potential energy that are stored by a car driving on a hill.
Ilia_Sergeevich [38]

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The internal combustion engine in the car converts the potential chemical energy in gasoline and oxygen into thermal energy which is transformed into the mechanical energy that accelerates the vehicle (increasing its kinetic energy) by causing the pressure and performing the work on the pistons.

Explanation:

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3 years ago
How many moles are there in 4 grams of oxygen?
kifflom [539]

Answer:

0.125

Explanation:

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3 years ago
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Consider the following exothermic reaction and predict how the change below will affect the concentration (increase, decrease, s
aev [14]

Answer:

a) equilibrium shifts towards the left

b) equilibrium shifts towards the right hand side.

c)equilibrium shifts towards the left hand side

d) addition of argon has no effect on the equilibrium position

e) equilibrium position shifts towards the left hand side

f) equilibrium position is shifted towards the right hand side

g) addition of a catalyst has no effect on the equilibrium position

Explanation:

Given the equation;

3N2H4(g)⇄ 4NH3 (g) + N2 (g)

Adding N2

The addition of N2 will increase the concentration of N2 in the system thereby shifting the equilibrium position to the left in accordance with Le Chatelier's principle.

Removing N2

The removal of N2 drives the forward reaction and the equilibrium shifts towards the right yielding more N2 in accordance with Le Chateliers principle.

Add NH3

The addition of NH3 will shift the equilibrium position towards the left hand side according to Le Chateliers principle.

d) addition of argon has no effect on the equilibrium position.

e) increasing the temperature

Since the reaction is exothermic, increasing the temperature favours the reverse reaction and the equilibrium position his shifted towards the left hand side.

f) Decrease in volume;

Decreasing the volume favours the forward reaction hence the equilibrium position is shifted towards the right.

g) addition of a catalyst has no effect on the equilibrium position.

3 0
3 years ago
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