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loris [4]
3 years ago
8

How many moles ofO are present in 3.5 mol of Al2(SO4)3

Chemistry
1 answer:
ehidna [41]3 years ago
5 0

Answer:

Name of the compound is aluminum sulphate. chemical formula Al2(SO4)3

In that compound there are two aluminum atoms; three sulphur and 4*3=12 oxygen atoms.

2 oxygen atoms is equivalent to 1 mole oxygen.

so 12 oxygen is equivalent to 12÷2=6 mole oxygen.

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Nicole has a 5 lb bag of carrots and a 2 oz bag<br>of carrots. How much does Nicole have in total?​
svp [43]

Answer:

5 pounds 2 ounces.

Explanation:

1 pound = 16 ounces

So just add the 2 ounces to the pounds.

4 0
3 years ago
What is the difference in atomic structure between Lead-205 and Lead-208?
Nataly_w [17]

Answer:

  the number of neutrons in the nucleus

Explanation:

The mass number 205 is the total number of protons and neutrons in the nucleus. Lead has 82 protons, so a mass number of 205 indicates a nucleus with 123 neutrons.

Similarly, the mass number 208 indicates a lead nucleus with 126 neutrons.

The difference in atomic structure is the difference in the number of neutrons in the nucleus.

5 0
3 years ago
"how many grams of calcium are consumed when 156.8 ml of oxygen"
Akimi4 [234]
Your question is incomplete. However, I found a similar problem fromanother website as shown in the attached picture.

To solve this problem, you must know that at STP, the volume for any gas is 22.4 L/mol. So,

Moles O₂: 156.8 mL * 1 L/1000 mL* 1 mol/22.4 L = 0.007 moles
Mass calcium: 0.007 mol O₂ * 2 mol Ca/1 mol O₂ * 40 g/mol Ca =<em> 0.56 g Ca</em>

3 0
3 years ago
Periodic trends are examined by looking down the _ of elements or by looking across the _ of the elements
nikklg [1K]

Answer: yo sorry this a hard one

Explanation:

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6 0
2 years ago
What moves the pieces of salt on top of the speaker when the music is playing
Ksivusya [100]

Answer:

the friction?? or the movement

Explanation:

sense the salt is so light its easy to move

5 0
3 years ago
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