Single Choice

The number of water molecules is maximum in :

A18 grams of water
B18 moles of water
Correct Answer
C18 molecules of water
D1.8 grams of water

Solution

The number of water molecules is maximum in 18 moles of water.
(A) 18 grams of water corresponds to 1 mole and contains N water molecules where N is avogadro's number.
(B) 18 moles of water contains 18 N water molecules.
(C) 18 molecules of water
(D) 1.8 grams of water contain 0.1 N water molecules.

SIMILAR QUESTIONS

Mole Concept

$$10$$ grams each of $$O_{2},\ N_{2}$$ and $$Cl_{2}$$ are kept in three bottles. The correct order of arrangement of bottles containing decreasing number of molecules is:

Mole Concept

The density of water is $$1.00$$ g/ml at $$4^0 C$$. Number of water molecules (as multiples of $$N_o$$) present in $$18$$ ml water at this temperature is __________.

Mole Concept

Arrange the following in increasing order of number of molecules I. 0.5 mol of $${H}_{2}$$ II. 4.0 g of $${H}_{2}$$ III. 18 g of $${H}_{2}O$$ IV. 2.2 g of $$C{O}_{2}$$

Mole Concept

The ratio of masses of oxygen and nitrogen in a particular gaseous mixture is $$ 1:4$$. The ratio of number of their molecules is :

Mole Concept

Which has the maximum number of molecules among the following?

Mole Concept

Which has the maximum number of molecules among the following?

Mole Concept

The number of molecules of $$H_2O$$ in $$90$$ g of water is?

Mole Concept

If $$3$$ moles of ethane $$\displaystyle \left( { C }_{ 2 }{ H }_{ 6 } \right) $$ are given, calculate the following: (i) Number of moles of carbon atoms. (ii) Number of moles of hydrogen atoms. (iii) Number of molecules of ethane.

Mole Concept

HCl is produced in the stomach which can be neutralised by $$Mg(OH)_2$$ in the form of milk of magnesia. How much $$Mg(OH)_2$$ is required to neutralise one mole of stomach acid?

Mole Concept

Which of the following formulae is not correctly depicted?

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