Question
What is the ratio by mass of carbon and oxygen in carbon dioxide?
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SSC Selection Post 2023 Graduation Level Question Paper (30 Jun, 2023) (Shift 1)
The correct answer is
3 ∶ 8
The correct answer is 3 ∶ 8.
Determining the empirical formula of a compound from experimental data. Analyzing the composition of unknown substances. The ratio can also be expressed as a fraction (3/8) or a percentage (Carbon mass is (12 / 44) \times 100\% and Oxygen mass is (32 / 44) \times 100\%, where 44 is the total molar mass of \text{CO}_2). The ratio 3:8 represents the simplest whole-number ratio of masses.
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Important Questions from Nucleus
- The binding energy B of a nucleus is approximated by the formula B = a 1 A − a 2 A 2/3 − a 3 Z 2 A −1/3 − a 4 (A − 2Z) 2 A −1 where Z is the atomic number and A is the mass number of the nucleus. If \(\rm\frac{a_4}{a_3}\) ≃ 30, the atomic number Z for naturally stable isobars (constant value of A) is
What are the main constituents of biogas?
The energy equivalent of mass associated with the rest mass of an electron, is nearly:
- Considering that the radius of an atomic nucleus, $R$, can be approximated by the formula $R = R_0 A^{1/3}$, where $R_0 \approx 1.2 \times 10^{-15}$ m is the Fermi radius constant and $A$ is the mass number, and the average mass of a single nucleon is approximately $1.67 \times 10^{-27}$ kg. Calculate the approximate order of magnitude of nuclear matter density in $\text{kg/m}^3$.
- The mass number of argon is 40. Which one of the following statements is correct?
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