MHT CET · Chemistry · Some Basic Concepts of Chemistry
What is the number of \(\mathrm{CO}_2\) molecules in 45.42 litre at STP? (Consider molar volume of gas at STP \(=22.71 \mathrm{~L} \mathrm{~mol}^{-1}\) )
- A \(0.913 \times 10^{24}\)
- B \(1.806 \times 10^{24}\)
- C \(1.501 \times 10^{24}\)
- D \(1.204 \times 10^{24}\)
Answer & Solution
Correct Answer
(D) \(1.204 \times 10^{24}\)
Step-by-step Solution
Detailed explanation
\(\text { Number of moles }=\frac{45.42}{22.71}=2\)
or \(2 \times 6.02 \times 10^{23}=1.204 \times 10^{24}\) molecules
or \(2 \times 6.02 \times 10^{23}=1.204 \times 10^{24}\) molecules
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- Which among the following is benzylic halide?MHT CET 2021 Easy
- The correct representation of Nernst’s equation for half- cell reaction isMHT CET 2019 Hard
- What is percent atom economy if formula weight of reactants and formula weight of products respectively are \(45 \mathrm{u}\) and \(35 \mathrm{u}\) ?MHT CET 2022 Easy
- Chlorine is manufacture byMHT CET 2020 Easy
- For the reaction, \(\mathrm{NO}_{2(\mathrm{~g})}+\mathrm{CO}_{(\mathrm{g})} \longrightarrow \mathrm{NO}_{(\mathrm{g})}+\mathrm{CO}_{2(\mathrm{~g})}\) rate of reaction is proportional to square of [ \(\mathrm{NO}_2\) ] and independent of [CO].
What is the rate law equation?MHT CET 2024 Easy - What is the molecularity and order of the following reaction if rate law is rate \(=\mathrm{K}\left[\mathrm{O}_{3}\right][\mathrm{O}]\) respectively?
\(\mathrm{O}_{3(\mathrm{~g})}+\mathrm{O}_{(\mathrm{g})} \longrightarrow 2 \mathrm{O}_{2(\mathrm{~g})}\)MHT CET 2020 Medium
More PYQs from MHT CET
- Given below are two statements.
Statement I - Highest secretion of growth hormone (GH) is seen till puberty.
Statement II - The GH is secreted continuously throughout life for repair and replacement of cells.
In the light of above statements, select the correct option given below:MHT CET 2025 Hard - The area (in sq. units) of the region \(\mathrm{A}=\left\{(x, y) / \frac{y^2}{2} \leq x \leq y+4\right\}\)MHT CET 2023 Medium
- Photoelectrons are emitted when photons of energy \(4.2 \mathrm{eV}\) are incident on a photosensitive metallic sphere of radius \(10 \mathrm{~cm}\) and work function \(2.4 \mathrm{eV}\). The number of photoelectrons emitted before the emission is stopped is
\(
\left[\frac{1}{4 \pi \epsilon_0}=9 \times 10^9 \text { SI unit; } \mathrm{e}=1.6 \times 10^{-19} \mathrm{C}\right]
\)MHT CET 2021 Medium - Density of population increases when _________.MHT CET 2018 Easy
- \(\mathrm{ABCD}\) is a parallelogram, \(\mathrm{P}\) is the mid-point of \(\mathrm{AB}\). If \(\mathrm{R}\) is the point of intersection
of \(\mathrm{AC}\) and \(\mathrm{DP}\), then \(\mathrm{R}\) divides \(\mathrm{AC}\) internally in the ratioMHT CET 2020 Medium - Identify acidic amino acid from following (represented by using three letter symbols).MHT CET 2024 Hard