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Crank
3 years ago
10

If we react H2O with Cl2, So HClO will form or HOCl

Chemistry
1 answer:
skelet666 [1.2K]3 years ago
8 0
Neither it's a single replacement equation

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You need to make an aqueous solution of 0.139 M potassium phosphate for an experiment in lab, using a 250 mL volumetric flask. H
Crazy boy [7]

Answer:

7,38 g of K₃PO₄

Explanation:

Molarity is an unit of chemical concentration. 0,139 M means 0,139 moles of solute per liter of solution.

In this case, the solute is potassium phosphate (K₃PO₄; molar mass: 212,27 g/mol) and the volume of the solution must be 250mL≡0,25L.

Thus, the moles of potassium phosphate you need are:

0,139 mol/L×0,25L = 0,03475 moles of K₃PO₄

In grams:

0,03475 moles of K₃PO₄ × \frac{212,27g}{1mol} = 7,38 g of K₃PO₄

I hope it helps!

7 0
4 years ago
Please help me answer this. I am so confused.
Phoenix [80]
Same I’m so confused ‍♀️
6 0
3 years ago
Meaning of rust and rusting​
Yuki888 [10]

Answer:a reddish- or yellowish-brown flaky coating of iron oxide that is formed on iron or steel by oxidation, especially in the presence of moisture.

Explanation: so basically rusting happens when a metal comes in contact with moisture and air, at a brown, dirty metal coat forms on it.

7 0
2 years ago
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What is the energy needed to raise an electron in the hydrogen atom from the second energy level to the third energy level ?
nignag [31]
\Delta E=|E_{2}-E_{3}|=|\frac{E_{1}}{4}-\frac{E_{1}}{9}|=|\frac{-13.9eV}{4}-\frac{-13.9eV}{9}|=\\\\
=|-3.475eV+1.544eV|=|-1,931eV|=1.931eV

 1eV --------- is ----------- 1.6*10⁻¹⁹J
1.931eV ---- is -----------  x

x = [1.931eV*1.6*10⁻¹⁹J]/1eV ≈ 3,1*10⁻¹⁹J

<u>ANSWER E</u>
5 0
3 years ago
plez hurry Which is an important safety precaution that should be taken during a tornado? Stay away from doors and windows. Move
jeka57 [31]

Answer: stay away from doors and windows.

Explanation:

to aviod geting hit by glass

5 0
3 years ago
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