Class 9 Exam  >  Class 9 Questions  >  The atomic mass of calcium is 40. Calculate t... Start Learning for Free
The atomic mass of calcium is 40. Calculate the number of moles in 16 grams of calcium.
  • a)
    0.4 mole
  • b)
    4 mole
  • c)
    1/4 mole
  • d)
    640 mole
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
The atomic mass of calcium is 40. Calculate the number of moles in 16 ...
atomic mass of calcium is 40u.
No. of moles =given weight/molecular weight
No. of Cu moles=0.4/40=1/00=0.01moles
We know that 1 mole of any substance contains 6.023 x 10^23 atoms/ molecules/ions
1mole of Cu contains=6.023 x 10^23 atoms of Cu
0.01 mole of Cu contains =6.023 x10^21 atoms of calcium.

∴The no. of calcium atoms in 0.4 u of calcium are 6.023 x10^21 atoms
View all questions of this test
Most Upvoted Answer
The atomic mass of calcium is 40. Calculate the number of moles in 16 ...
Number of moles of Ca :- 
n = Given mass in grams / molar mass
=   16 / 40 
=   0.4 mole.
Free Test
Community Answer
The atomic mass of calcium is 40. Calculate the number of moles in 16 ...
No of moles = 16 / 40
= 0.4
Attention Class 9 Students!
To make sure you are not studying endlessly, EduRev has designed Class 9 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 9.
Explore Courses for Class 9 exam

Top Courses for Class 9

The atomic mass of calcium is 40. Calculate the number of moles in 16 grams of calcium.a)0.4 moleb)4 molec)1/4 moled)640 moleCorrect answer is option 'A'. Can you explain this answer?
Question Description
The atomic mass of calcium is 40. Calculate the number of moles in 16 grams of calcium.a)0.4 moleb)4 molec)1/4 moled)640 moleCorrect answer is option 'A'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about The atomic mass of calcium is 40. Calculate the number of moles in 16 grams of calcium.a)0.4 moleb)4 molec)1/4 moled)640 moleCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The atomic mass of calcium is 40. Calculate the number of moles in 16 grams of calcium.a)0.4 moleb)4 molec)1/4 moled)640 moleCorrect answer is option 'A'. Can you explain this answer?.
Solutions for The atomic mass of calcium is 40. Calculate the number of moles in 16 grams of calcium.a)0.4 moleb)4 molec)1/4 moled)640 moleCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 9. Download more important topics, notes, lectures and mock test series for Class 9 Exam by signing up for free.
Here you can find the meaning of The atomic mass of calcium is 40. Calculate the number of moles in 16 grams of calcium.a)0.4 moleb)4 molec)1/4 moled)640 moleCorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of The atomic mass of calcium is 40. Calculate the number of moles in 16 grams of calcium.a)0.4 moleb)4 molec)1/4 moled)640 moleCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for The atomic mass of calcium is 40. Calculate the number of moles in 16 grams of calcium.a)0.4 moleb)4 molec)1/4 moled)640 moleCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of The atomic mass of calcium is 40. Calculate the number of moles in 16 grams of calcium.a)0.4 moleb)4 molec)1/4 moled)640 moleCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice The atomic mass of calcium is 40. Calculate the number of moles in 16 grams of calcium.a)0.4 moleb)4 molec)1/4 moled)640 moleCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Class 9 tests.
Explore Courses for Class 9 exam

Top Courses for Class 9

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev