Chemistry Crash Course MHT-CET>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 5

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IMPORTANT

Earn 100

In a chemical scale, the relative mass of the isotopic mixture of oxygen atoms $(^{16} O,^{17} O,^{18} O)$ is assumed to be equal to__________

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Important Questions on Some Basic Concepts of Chemistry

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IMPORTANT

Chemistry Crash Course MHT-CET>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 6

The mass of $1$ atom of hydrogen is ______.

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Chemistry Crash Course MHT-CET>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 7

Let the molar mass of an element be

A

grams. Then, the mass of

10

atoms of the element in

amu

is

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Chemistry Crash Course MHT-CET>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 8

The average mass of one gold atom in a sample of naturally occurring gold is

3.257 \times 10^{- 22} g

. Use this to calculate the molar mass of gold.

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Chemistry Crash Course MHT-CET>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 9

Which property of an element may have non-integral value?

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Chemistry Crash Course MHT-CET>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 10

The weight of one atom of Uranium is

238

amu. Its actual weight is_____g.

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Chemistry Crash Course MHT-CET>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 11

Average atomic mass of Magnesium is 24.31 amu. This magnesium is composed of 79 mole

%

of

^{24} Mg

and remaining 21 mole

%

of

{}^{25}{Mg}

and

{}^{26}{Mg}

. Calculate the mole

%

of

{}^{26}{Mg}

.

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Chemistry Crash Course MHT-CET>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 12

How many grams are contained in

1

gram-atom of

Na

?

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IMPORTANT

Chemistry Crash Course MHT-CET>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 13

An element has three isotopes with masses of

24, 25

and

26

with relative abundance of

80 %, 15 %

and

5 %

, respectively. The average mass of the isotope mixture would be