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ipn [44]
2 years ago
7

How do erosions affect land forms?

Chemistry
1 answer:
nata0808 [166]2 years ago
5 0

Answer:

the anwser is landforms can be created by erosion

Explanation:

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You are given an unknown mixture containing NaCl and NaHCO3. When you carry out the heating exactly as described in part A, only
SOVA2 [1]

Answer:

1.52g NaHCO3 were in the original mixture.

Mass percent: 64.1%

Explanation:

When NaHCO3 heats it descomposition occurs as follows:

2 NaHCO3(s) → Na2CO3(s) + CO2(g) + H2O(g).

The loss in mass is because of the evaporization of CO2 and H2O. As both are in the same porportion, its molar mass is the sum of both compounds (44g/mol + 18g/mol = 62g/mol)

Loss in mass: 74.80g - 74.24g = 0.56g.

In moles:

0.56g * (1mol / 62g) = 0.00903 moles of gas.

As 1 mole of the gases comes from 2 moles of NaHCO3:

<em>Moles NaHCO3:</em>

0.00903 moles of gas * (2 moles NaHCO3 / 1 mole gas) = 0.018 moles NaHCO3.

In grams (Molar mass NaHCO3: 84g/mol):

0.018 moles NaHCO3 * (84g / mol) = 1.52g NaHCO3 were in the original mixture.

The mass of the mixture was:

74.80g - 72.428g = 2.372g

That means mass percent of NaHCO3 is:

(1.52g /  2.372g) * 100 =  64.1%

7 0
3 years ago
What is the net ionic equation for AgNO3 and Na2CO3
natima [27]
2Ag+(aq) + CO2-_3(aq)-----------Ag2CO3
5 0
3 years ago
I don’t know it A is correct please tell me the right answer
Greeley [361]

I do believe the answer is A. Hope this helps.

8 0
3 years ago
Read 2 more answers
Explain why molecules of water were attracted to the negatively charged plastic tube while molecules of cyclohexane were not. Dr
mihalych1998 [28]

Answer:

See attached

Explanation:

Structural geometry is the key to understanding particle-particle interactions on a physical levels. Suggest a review of molecular geometry and states of matter for a more in depth understanding. Doc                                                

5 0
3 years ago
5. An example of a muscle that is voluntarily controlled is a muscle that
Shtirlitz [24]

Answer:

A, Makes the leg move

Explanation:

6 0
2 years ago
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