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Asked on 11/12/2021 Learn Some Basic Concepts of Chemistry

A measured temperature on Fahrenheit scale is 200 F. What will this reading be on Celsius scale? (a)... read more
A measured temperature on Fahrenheit scale is 200°F. What will this reading be on Celsius scale? (a) 40°C (b) 94°C (c) 93.3°C (d) 30°C " read less

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Asked on 11/12/2021 Learn Some Basic Concepts of Chemistry

What will be the molarity of a solution, which contains 5.85 g of NaCl(s) per 500 mL?(a) 4 mol L-1 ... read more
What will be the molarity of a solution, which contains 5.85 g of NaCl(s) per 500 mL?(a) 4 mol L-1 (b) 20 mol L-1 (c) 0.2 mol L-1 (d) 2 mol L -1" read less

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Asked on 11/12/2021 Learn Some Basic Concepts of Chemistry

The number of atoms present in one mole of an element is equal to Avogadro number. Which of the following... read more
The number of atoms present in one mole of an element is equal to Avogadro number. Which of the following elements contains the greatest number of atoms?(a) 4gHe (b) 46gNa (c) 0.40 gCa (d) 12 g He " read less

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Asked on 11/12/2021 Learn Some Basic Concepts of Chemistry

If the concentration of glucose (C6H1206) in blood is 0.9 g L-1, what will be the molarity of glucose... read more
If the concentration of glucose (C6H1206) in blood is 0.9 g L-1, what will be the molarity of glucose in blood? (a) 5 M (b) 50 M (c) 0.005 M (d) 0.5 M" " read less

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Asked on 11/12/2021 Learn Some Basic Concepts of Chemistry

One mole of any substance contains 6.022 x 1023 atoms/molecules. Number of molecules of H2S04 present... read more
One mole of any substance contains 6.022 x 1023 atoms/molecules. Number of molecules of H2S04 present in 100 mL of 0.02 M H2S04 solution is __________(a)12.044 x 1020 molecules (b) 6.022 x 1023 molecules (c) 1 x 1023 molecules (d) 12.044 x 1023 molecules" " read less

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Asked on 11/12/2021 Learn Some Basic Concepts of Chemistry

What is the mass per cent of carbon in carbon dioxide?(a) 0.034% (b) 27.27% (c) 3.4% (d) 28.7%" "

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Asked on 11/12/2021 Learn Some Basic Concepts of Chemistry

The empirical formula and molecular mass of a compound are CH20 and 180g respectively. What will be the... read more
The empirical formula and molecular mass of a compound are CH20 and 180g respectively. What will be the molecular formula of the compound?(a) C9H1809, (b) CH20 (c) C6Hi206 (d) C2H402" " read less

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Asked on 11/12/2021 Learn Some Basic Concepts of Chemistry

If the density of a solution is 3.12 g mL1, the mass of 1.5 mL solution in significant figures is________(a)... read more
If the density of a solution is 3.12 g mL1, the mass of 1.5 mL solution in significant figures is________(a) 4.7 g (b) 4680 x 10-3 g (c) 4.680 g (d) 46.80 g" " read less

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Asked on 11/12/2021 Learn Some Basic Concepts of Chemistry

One mole of oxygen gas at STP is equal to____ (a) 6. 022 x 1023 molecules of oxygen (b) 6.022 x 1023... read more
One mole of oxygen gas at STP is equal to____ (a) 6. 022 x 1023 molecules of oxygen (b) 6.022 x 1023 atoms of oxygen (c) 16 g of oxygen . (d) 32 g of oxygen" " read less

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Asked on 11/12/2021 Learn Some Basic Concepts of Chemistry

Which of the following solutions have the same concentration?(a) 20 g of NaOH in 200 mL of solution ... read more
Which of the following solutions have the same concentration?(a) 20 g of NaOH in 200 mL of solution (b) 0.5 mol of KC1 in 200 mL of solution (c) 40 g of NaOH in 100 mL of solution (d) 20 g of KOH in 200 mL of solution" read less

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