Chemistry · 2020
NEET 2020 · 14 October · Code Z6 · Q152
One mole of carbon atom weighs 12 g. the number of atoms in it is equal to. (Mass of carbon - 12 is 1.9926 × 10^-23 g )
One mole of carbon atom weighs $\displaystyle 12$ g. the number of atoms in it is equal to. (Mass of carbon - $\displaystyle 12$ is $\displaystyle 1.9926 \times 10^{-23} \mathrm{~g}$ )
Official answer
(3)
$\displaystyle 6.022 \times 10^{23}$
More from Some Basic Concepts of Chemistry
- The number of hydrogen atoms present in 5.4 g of urea is: (Given: Molar mass of urea: 60 g mol^-1, N_A: 6.022 × 10^23 particles mol^-1 )2026
- 1 gram of sodium hydroxide was treated with 25 mL of 0.75 M HCl solution, the mass of sodium hydroxide left unreacted is equal to2024
- 10 g of hydrogen and 64 g of oxygen were filled in a steel vessel and exploded. Amount of water produced in this reaction will be:2009
- An organic compound contains 78\% (by wt.) carbon and remaining percentage of hydrogen. The right option for the empirical formula of this compound…2021
- A compound X contains 32\% of A, 20\% of B and remaining percentage of C. Then, the empirical formula of X is: (Given atomic masses of A=64; B=40;…2024
- Which has the maximum number of molecules among the following?2011
- 0 g of a magnesium carbonate sample decomposes on heating to give carbon dioxide and 8.0 g magnesium oxide. What will be the percentage purity of…2015
- 0 g of H_2 has same number of molecules as in:2024
NEET (UG) 2020 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.