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2 years ago

The amount of thermal energy contained by a substance depends on 2 things

1 answer:

4 0

Answer: The thermal energy of matter depends on how fast its particles are moving on average, which is measured by temperature, and also on how many particles there are, which is measured by mass.

Explanation:

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How long is cooked beef good for in the refrigerator?.

Kryger [21]

Answer:

3 to 4 days is how long you can keep cooked beef in the refrigerator

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2 years ago

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Which force is most responsible for binding together an atom’s protons and neutrons?

vampirchik [111]

Answer:

Hello There!!

Explanation:

I believe the answer is nuclear.

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2 years ago

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Any change that alters a substance without changing it into another substance.

Ber [7]

A physical change.

Physical change = can be reverted + doesn't change substance
Chemical = changes substance

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3 years ago

If 3.91 moles of H2 were used, how many moles of NH3 would be made?<br><br> HELP PLEASE ASAP

matrenka [14]

N + H2 → NH3

balance the equation

2N + 3H2 → 2NH3

3H2 → 2NH3

3 : 2

3.91 ÷ 3 = 1.303 mol

1.3 × 2 = 2.606 mol

7 0

3 years ago

Nitric oxide reacts with chlorine gas according to the reaction: 2 NO( g) + Cl2( g) ∆ 2 NOCl( g) Kp = 0.27 at 700 K A reaction m

11Alexandr11 [23.1K]

Answer: The initial partial pressures of $NO$ and $Cl_2$ is 139.4 torr.

Explanation:

The equilibrium reaction is

$2NO(g)+Cl_2(g)\rightleftharpoons 2NOCl(g)$

initially conc. p p 0

At eqm. p-2x p-x 2x

Given: $p_{NOCl}= 2x= 115torr$

$x=57.5 torr$

The expression for equilibrium constant is :

$K_p=\frac{p_{NOCl}^2}{p_{NO}^2\times p_{Cl_2}}$

$p_{NOCl}$ = 2x =115 torr

$p_{NO}$ = (p-2x) = p-115 torr

$p_{Cl_2}$ = (p-x)= p-57.5 torr

Now put all the given values in this expression, we get

$0.27=\frac{(115)^2}{(p-115)^2\times (p-57.5)}$

$p=139.4torr$

Therefore, the initial partial pressures of $NO$ and $Cl_2$ is 139.4 torr.

8 0

3 years ago