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o-na [289]
3 years ago
9

Need help ASAP!!!!

Chemistry
2 answers:
Advocard [28]3 years ago
8 0

Answer:

D.

Explanation:

Decompostion of stone due to acid rain

n200080 [17]3 years ago
5 0

Answer:

D

Explanation: the rest are either traits or physical changes

D is a chemical reaction

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What is the correct formula for the compound formed by Mg and F?
Gemiola [76]

Magnesium phosphate

Find Similar Structures

Molecular Formula

Mg3(PO4)2 or Mg3O8P2

Synonyms

magnesium phosphate

More...

Molecular Weight

262.86 g/mol

6 0
2 years ago
Read 2 more answers
At a certain temperature the vapor pressure of pure acetic acid HCH3CO2 is measured to be 226.torr. Suppose a solution is prepar
Rudiy27

Answer:

The partial pressure of acetic acid is 73.5 torr

Explanation:

Step 1: Data given

Total pressure is 226 torr

mass of acetic acid = 126 grams

mass of methanol = 141 grams

 

Step 2: Calculate moles of acetic acid

moles acetic acid = mass acetic acid / molar mass acetic acid

moles acetic acid = 127 grams / 60.05 g/mol

moles acetic acid = 2.115 moles

Step 3: Calculate moles of methanol

moles methanol = 141 grams / 32.04 g/mol

moles methanol = 4.40 moles

Step 4: Calculate total moles

Total moles = moles of acetic acid + moles methanol

Total moles = 2.115 moles + 4.40 moles

Total moles = 6.515 moles

Step 5: Calculate mole fraction of acetic acid

2.115 moles / 6.515 moles = 0.325

Step 6: Calculate partial pressure of acetic acid

P(acetic acid) = 0.325 * 226

P(acetic acid) = 73.45 torr ≈73.5

 

We can control this by calculating the partial pressure of methanol

mole fraction of methanol = (6.515-2.115)/6.515 = 0.675

P(methanol) = 0.675 * 226 = 152.55

226 - 152.55 = 73.45 torr  

The partial pressure of acetic acid is 73.5 torr

4 0
3 years ago
1.Which is the largest atom in Group 1?
Serhud [2]
1. Francium
2. Nitrogen
3.rubidium
4. Krypton
7 0
2 years ago
Describe three factors that could limit the growth of the prairie dog population
alexira [117]

Answer:

Changes in environment, food source changes and disease?

Explanation:

I dont know what the answer choices are

5 0
3 years ago
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Two properties of non-metallic elements and their
maw [93]

Explanation: Sulphur trioxide forms Sulphur acid with water.

Phosphorus has unpaired electrons in 3p state

7 0
2 years ago
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