Chapter 1: Problem 7
The number of significant figures in \(0.0500\) is (1) one (2) three (3) two (4) four
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Key Concepts
These are the key concepts you need to understand to accurately answer the question.
Chapter 1: Problem 7
The number of significant figures in \(0.0500\) is (1) one (2) three (3) two (4) four
These are the key concepts you need to understand to accurately answer the question.
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Get started for freeOne part of an clement \(\mathrm{X}\) combines with two parts of another clement \(\mathrm{Y}\). Six parts of the clement \(\mathrm{Z}\) combines with four parts of clement \(Y\). If \(X\) and \(Y\) combine together, the ratio of their weights will be governed by (1) Law of multiple proportions (2) Law of definite proportions (3) Law of reciprocal proportions (4) Law of conservation of mass
Lactose commonly used as a binder in tablets has a molecular weight \(342 .\) What weight of \(\mathrm{CO}_{2}\) would be formed when \(1 / 12\) mole of this compound is burnt completely? \(\left(\mathrm{C}_{12} \mathrm{H}_{22} \mathrm{O}_{11}+12 \mathrm{O}_{2} \longrightarrow 12 \mathrm{CO}_{2}+11 \mathrm{H}_{2} \mathrm{O}\right)\) \((1) 12 \mathrm{~g}\) (2) \(44 \mathrm{~g}\) (3) \(4.4 \mathrm{~g}\) (4) \(440 \mathrm{~g}\)
\(100 \mathrm{ml}\) of \(0.2 \mathrm{M} \mathrm{K}_{2} \mathrm{SO}_{4}\) is diluted with \(100 \mathrm{ml}\) of water. The \(\mathrm{K}^{+}\) ion in the solution (1) \(0.4 \mathrm{M}\) (2) \(0.1 \mathrm{M}\) (3) \(0.2 \mathrm{M}\) (4) \(0.8 \mathrm{M}\)
A certain grade coal contains \(1.6\) per cent sulphur. Assuming that on burning the coal, \(\mathrm{S}\) in it is oxidised to \(\mathrm{SO}_{2}\), how many moles of \(\mathrm{SO}_{2}\) would be formed on burning 1 metric ton \((1000 \mathrm{~kg})\) of coal? (1) 16 (2) \(16000 \times \frac{2}{64}\) (3) \(16000 \times \frac{2}{32}\) (4) \(\frac{16000}{64}\)
\(5.6 \mathrm{~g}\) of carbon monoxide is heated with excess of \(\mathrm{O}_{2}\) to form carbon dioxide. What is the theoretical yield in grams of carbon dioxide \(\left(2 \mathrm{CO}+\mathrm{O}_{2} \longrightarrow 2 \mathrm{CO}_{2}\right) ?\) (1) \(44 \mathrm{~g}\) (2) \(88 \mathrm{~g}\) (3) \(4.4 \mathrm{~g}\) (4) \(8.8 \mathrm{~g}\)
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