3 x 10^-21 moles of an amino acid having a molecular mass of 200 g mol-1, would have molecules?
Correct answer: B. 1800
- A. 200
- B. 1800
- C. 300
- D. 36000
Explanation
N=n x NAN=3 x 10-21 x6.02 x 1023N=1800Hence, option b is correct.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Fundamental Concepts of Chemistry
Mole calculations connect mass, number of particles and Avogadro's number, while balanced equations provide the mole ratios used in stoichiometry. Questions cover limiting and excess reactants, theoretical yield and percentage yield, including identifying which reactant is consumed first and comparing the actual product with the maximum possible product.
Practise Fundamental Concepts of Chemistry
894 free Fundamental Concepts of Chemistry MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Fundamental Concepts of Chemistry questions
The mass of one molecule of oxygen is?
Number of moles present in 0.6 grams of Silica is? (Atomic mass Si=28 O=16)
Correct representation of elements with atomic number and atomic mass is?
Which of the following has maximum mass?
Which of the following compounds has highest percentage of oxygen by weight?
Volume occupied by 4.4g of CO2 at STP is