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Earn 100

The average mass of one gold atom in a sample of naturally occurring gold is 3.257×10-22 g. Use this to calculate the molar mass of gold.

Important Questions on Some Basic Concepts of Chemistry

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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  24Mg and remaining 21 mole % of  Mg25 and Mg26. Calculate the mole % of  Mg26.
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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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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
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Chemistry Crash Course MHT-CET>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 14
The most abundant elements by mass in the body of a healthy human adult are:
Oxygen(61.4 %), Carbon(22.9 %), Hydrogen(10.0 %) and Nitrogen(2.6 %). The weight, which a 75 kg person would gain if all H1 atoms are replaced by H2 atoms is,
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Chemistry Crash Course MHT-CET>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 15
The percentage composition of carbon in urea, [CO(NH2)2] is _______ 
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Chemistry Crash Course MHT-CET>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 16
 What is the % of H2O in Fe(CNS)3.3H2O? (molar mass of Fe(CNS)3.3H2O=284 g)