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3 years ago

Gas syringe

Chemistry

1 answer:

-BARSIC- [3]3 years ago

5 0

Answer:

Decrease surface area of marble chips.

Explanation:

Because the reaction goes on the surface of marble chips, decreasing surface area of marble chips will decrease(slow down) the rate of the reaction.

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Write a question you have about water

nydimaria [60]

Answer:

How many gallons of water are on earth?

Why does salt water make you sticky and burn our eyes so bad?

Explanation:

These are just a couple questions I came up with just now

I hope that this helps

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3 years ago

Kp for the reaction CO2(g) + C(s) --- 2CO(g) is 1.47 at 727°C. Calculate Kc at this temperature.

Neko [114]

Answer:

The correct answer is "0.0179".

Explanation:

The given reaction is:

⇒ $CO_2(g) + C(s) \rightleftharpoons 2 \ CO(g)$

The given value is:

At 727°C temperature,

Kp = 1.47

As we know,

Gas constant,

R = 0.0821 L atm/mol.K

Temperature,

= $727+273$

= $1000 \ K$

Now,

The change in moles will be:

⇒ $\Delta n=Products-reactants$

⇒ $=2-1$

⇒ $=1$

As we know,

⇒ $K_p=K_c(RT)^{\Delta n}$

On substituting the given values, we get

⇒ $1.47=K_c(0.0821\times 1000)^1$

⇒ $K_c=\frac{1.47}{0.0821\times 1000}$

⇒ $=\frac{1.47}{82.1}$

⇒ $=0.0179$

8 0

3 years ago

S Which could occur in a closed system?

ollegr [7]

Answer:

Explanation:

i said answers is b

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3 years ago

Elements and molecules will always reemit the exact radiation that they

SashulF [63]

Elements/molecules will absorb a photon if energy, which will put them into an excited state. They will then emit that same energy back in order to come back down to their ground state energy.

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3 years ago

Which best describes an element?

joja [24]

An element is a pure substance

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2 years ago

Read 2 more answers