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blagie [28]
3 years ago
15

How many moles are in 1.05 g of gold (Au)?

Chemistry
1 answer:
Wittaler [7]3 years ago
7 0

Answer:

0.005 mol

Explanation:

Moles is denoted by given mass divided by the molecular mass ,  

Hence ,  

n = w / m

n = moles ,  

w = given mass ,  

m = molecular mass .

From the question ,

w = given mass of Gold = 1.05 g ,

m = molecular mass of Gold = 197 g/mol

<u>Hence , moles can be calculated as -</u>

n = w / m = 1.05 g / 197 g/mol = 0.005 mol

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Oduvanchick [21]

Answer:

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2 years ago
The mass of a block is 12 grams and the volume is 6 ml. Calculate the density of the
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Answer:

The density of block is 2 g/mL.

Explanation:

Density:

Density is equal to the mass of substance divided by its volume.

Units:

SI unit of density is Kg/m3.

Other units are given below,

g/cm3, g/mL , kg/L

Formula:

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Symbol:

The symbol used for density is called rho. It is represented by ρ. However letter D can also be used to represent the density.

Given data:

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3 0
2 years ago
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BabaBlast [244]

Answer:

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8 0
2 years ago
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Verdich [7]

Answer:

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i hope this helps and your welcom

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3 years ago
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