EASY
11th Odisha Board
IMPORTANT
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Avogadro's number of helium atoms weigh how many grams?

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Important Questions on Basic Concepts Atoms & Molecules

EASY
11th Odisha Board
IMPORTANT
Bureau's Higher Secondary Chemistry Volume-1>Chapter 2 - Basic Concepts Atoms & Molecules>QUESTIONS>Q 9
How many moles do 3 g of water represent?
EASY
11th Odisha Board
IMPORTANT
Bureau's Higher Secondary Chemistry Volume-1>Chapter 2 - Basic Concepts Atoms & Molecules>QUESTIONS>Q 10
How many moles do 2 x 1022 molecules of hydrogen represent ?
EASY
11th Odisha Board
IMPORTANT
Bureau's Higher Secondary Chemistry Volume-1>Chapter 2 - Basic Concepts Atoms & Molecules>QUESTIONS>Q 11
 A piece of copper weighs 0.635 g. How many atoms of copper does it contain?
EASY
11th Odisha Board
IMPORTANT
Bureau's Higher Secondary Chemistry Volume-1>Chapter 2 - Basic Concepts Atoms & Molecules>QUESTIONS>Q 12
Between 1gram of water and 1 gram of methanol, which has more number of molecules ?
EASY
11th Odisha Board
IMPORTANT
Bureau's Higher Secondary Chemistry Volume-1>Chapter 2 - Basic Concepts Atoms & Molecules>QUESTIONS>Q 13
What will be the weight of 1 x 1022 molecules of ammonia?
 
EASY
11th Odisha Board
IMPORTANT
Bureau's Higher Secondary Chemistry Volume-1>Chapter 2 - Basic Concepts Atoms & Molecules>QUESTIONS>Q 14
What is the mass of 2.5 x 1023 atoms of nitrogen ?
EASY
11th Odisha Board
IMPORTANT
Bureau's Higher Secondary Chemistry Volume-1>Chapter 2 - Basic Concepts Atoms & Molecules>QUESTIONS>Q 15
What is the mass of a carbon dioxide molecule?
EASY
11th Odisha Board
IMPORTANT
Bureau's Higher Secondary Chemistry Volume-1>Chapter 2 - Basic Concepts Atoms & Molecules>QUESTIONS>Q 16
Calculate the number of molecules present in carbon dioxide gas weighing 4.4g.