3 years ago

HELPPP i’ll give brainly :)))

Chemistry

1 answer:

Delvig [45]3 years ago

6 0

Answer:

12. 2.9 g= 0.0029 13. 14.7 L = 14700 ml

14. The chemical formula of magnesium hydroxide is Mg(OH)2, and its molar mass is 58.32 g/mol.

Explanation:

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To dilute a HCl solution from 0.400 M to 0.100 M the final volume must be

sp2606 [1]

Answer:

The final volume must be 400 mL.

Explanation:

Let us assume the Initial volume as 100ml

Using dilution factor formula

$\\$M_{1} \times V_{1}=M_{2} \times V_{2}$\\\\$0.400 M \times 100 m l=0.100 M \times V_{2}$$

So,

$V_{2}=\frac{0.400 M \times 100 m l}{0.100 M}=400 m l$

Thus, the final volume must be 400 mL.

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4 years ago

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What shape are all molecules that contain only two atoms?

Ksju [112]

A. Linear would be the answer
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4 years ago

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At what temperature is the average speed of oxygen molecules equal to 1.12×104m/s?

expeople1 [14]

we will use the root mean squared speed of oxygen formula
v= (3RT) / M
T= vM/3R
where
v =1.12x104 m/s; velocity
R= (8.31447 kg m2 s-2 K-1 mol-1) gas constant

M = 0.0319988 kg/mol; molar mass of oxygen

substituting the given values, we will get

T(K)= 14.37K or -258.78 C

Oxygen molecules speed of 1.12x104 m/s is at temperature -258.78C.

4 0

4 years ago

Enter an equation for the formation of CaCO3(s) from its elements in their standard states. Enter any reference to carbon as C(s

kaheart [24]

Answer:

CaF2 + CO3- ----> CaCO3 + 2 F-

Explanation:

The chemical compounds found on the left side of the date are the reagents and those found on the right are the products, where calcium carbonate appears.

Calcium carbonate is a quaternary salt

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3 years ago

Which atoms have the highest electromagnitivity

nekit [7.7K]

Answer:

atomic mass numbers? 23.23.233232323

Explanation:

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4 years ago