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4 years ago

I NEED HELP PLEASE, THANKS! :)

Chemistry

1 answer:

Alika [10]4 years ago

3 0

Answer:

About 10810.8

Explanation:

1.2 metric tons = 1200 kilograms = 1,200,000 grams

CaCl2 has a molar mass of 40+2*35.5=111 g.

1200000/111 is about 10810.8 moles. Hope this helps!

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An atom with six protons and eight neutrons is a(n)___

mylen [45]

Answer:

standard carbon atom

Explanation:

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3 years ago

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What is the correct name for HCIO3

Arada [10]

The answer is chloric acid. Hope this helps!

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3 years ago

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Given the following data, determine the order of reaction with respect to H2.

alex41 [277]

Answer:

First-order with respect to hydrogen.

Explanation:

Hello!

In this case, considering that the rate law of this reaction can be expressed via:

$r=k*p_{H_2}^m*p_{ICl}^n$

If we want to know m, the order of reaction with respect to hydrogen, we need to relate the experiments 1 and 3 in order to get rid of the pressure of ICl:

$\frac{r_1}{r_3} =\frac{k*p_{H_2,1}^m*p_{ICl,1}^n}{k*p_{H_2,3}^m*p_{ICl,3}^n}$

Thus, we plug in the given rates, and pressures to get:

$\frac{1.34}{0.266} =\frac{k*250^m*325^n}{k*50^m*325^n}$

So we can cancel wout k and 325^n:

$\frac{1.34}{0.266} =\frac{250^m}{50^m}$

Next we solve for m, the order of reaction with respect to hydrogen:

$5.04 =5^m\\\\log(5.04)=m*log(5)\\\\m=\frac{log(5.04)}{log(5)} \\\\m=1.0$

It means it is first-order with respect to hydrogen.

Regards!

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3 years ago

What would be the name of this pretend compound? The metal is type II. (Lk = lokinium) <br> Lk(CO3)2

bonufazy [111]

There’s no element named Lk in the periodic table, I guess it’s be Lokinium Carbonate, isn’t?

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3 years ago

Chemistry class 9 chapter 1

Aleksandr [31]

Explanation:

i) Melting point = 15°C and Boiling point = 110°C

ii) The region C on graph there is only liquid state, the region A on graph there is only solid state.

iii) The straight line A1 - B1 shows that the melting point of solid wax and getting converted to liquid form.

iv) Latent heat of vaporization is a physical property of a substance.

It is defined as the heat required to change one mole of liquid at its boiling point under standard atmospheric pressure.

v) At 'B' the wax is at both solid and liquid state

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3 years ago