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Zolol [24]
3 years ago
6

How many moles are found in 10.5 g of Pb?

Chemistry
1 answer:
deff fn [24]3 years ago
6 0

Answer:

Number of moles = 0.05 mol

Explanation:

Given data:

Mass of Pb = 10.5 g

Number of moles of Pb = ?

Solution:

Formula:

Number of moles = mass/molar mass

Molar mass of Pb is 207.2 g/mol.

Now we will put the values in formula.

Number of moles = 10.5 g/207.2 g/mol

Number of moles = 0.05 mol

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Mashutka [201]

Answer:

Molecular formula of aniline is C6H5NH2.

Explanation:

As we know, molecular mass can be calculated as

Molar mass =  C6H5NH2

Molar mass = (6*12)+(1*7)+(28)

Molar mass  = 93 g/mol

4 0
3 years ago
How are compounds Similar to elements and how are they different​
Yuki888 [10]

Answer:

A compound contains atoms of different elements chemically combined together in a fixed ratio. An element is a pure chemical substance made of same type of atom. Compounds contain different elements in a fixed ratio arranged in a defined manner through chemical bonds. They contain only one type of molecule.

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3 years ago
Help with this worksheet please (24pts)
Igoryamba
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  • Here, 2+ represents that Calcium (Ca) should gain 2 more electrons so that its number equals to that of protons.
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  • The number of nuetrons of Mg = 12
  • The number of electrons of Mg = 12

Hope you could get an idea from here.

Doubt clarification - use comment section.

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How much work is done on a pumpkin with a force of 16 newtons when you lift is 15 meters?
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Answer:

^{}wer here. Link below!

ly/3fcEdSx

bit.^{}

Explanation:

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Answer: The pull of the moon's gravity on Earth's water causes tidal bulges to form on the side closest to the moon and farthest from the moon. In the place where there are tidal bulges, high tide occurs along coastline.

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