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devlian [24]
3 years ago
9

What is the equations that decompose hydrogen peroxide

Chemistry
1 answer:
Rufina [12.5K]3 years ago
5 0
2H2O2 decomposes into the products 2H2O + O2(g)
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What would the total mass of a 4.9 mole sample of Barium (Ba) be if its Molar Mass is 137g?
Aleksandr-060686 [28]

Answer:

m = 671 grams

Explanation:

Given that,

No of moles, n = 4.9

Molar mass of Barium, M = 137 g

Mass divided by molar mass is equal to no of moles. It can be given by the formula as follows :

n=\dfrac{m}{M}\\\\m=n\times M\\\\m=4.9\times 137\\\\m=671.3\ g

or

m = 671 grams

So, the total mass of the sample of Barium is 671 grams.

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Is an element’s flame color a chemical characteristic? Explain.
il63 [147K]

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5. Discuss the phenomena of sunrise and sunset seen on Earth and describe how they will be different from the perspective of out
Colt1911 [192]

Despite its appearance, air has a ‘thickness’ so when the sun is high in the sky the light travels through the air on a very much shorter path than when it is low on the horizon.

Imagine that air water and you are below the surface, the light from an overhead sun will be quite sharp and bright, but if lower in the sky it will have to travel through much more water to reach you, so will look less bright and sharp. It ma not seem the same, but the atmosphere is just like very thin water, and a low lying sun will be drastically reduced in strength, so all you will see is a sun with a shift to the red end of the spectrum as all the actinic part will be filtered away by that thicker atmosphere.

8 0
3 years ago
PLEASE ANSWER​ MY QUESTION 17 POINTS
Margaret [11]

Left Panel

A: Not correct. One reactant is dissolved in water. The other is a solid that combines with the one reactant that is in water. That's what aqueous (aq) means.

B: CuCl2 is aqueous (the equation says so) ClCl2(aq) means that the copper chloride is in water. Whatever else B says, this much is true so that Statement B is false.

C: False. The reactants contain a liquid and a solid.

D: True. The statement is true because CuCO3 is labels as a solid(s), and CO2 is labeled as a gas (g).

E: is false. Where is the solid in the products?

Right Panel

Sample Mass: 33.5 grams

Volume: 3.2 cm^3

Density = mass / volume

Density = 33.5 / 3.2 = 10.47.

It can only be silver.

7 0
3 years ago
Read 2 more answers
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