The volumes of gases A, B, C and D are in this ratio 1 : 2 : 2 : 4 under the same conditions of temperature and pressure.

If the volume of A is actually 5.6 dm³ at STP, calculate the number of molecules in the actual volume of D at STP (Avogadro's number is 6 x 10²³).

The volume of D is four times the volume of A as given.

1.5 x 10²³

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2.0 x 10²³

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3.0 x 10²³

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4.5 x 10²³

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6.0 x 10²³

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Solution

The correct option is E
6.0 x 10²³

The volume of D will be 4 x 5.6 dm³ at STP = 22.4 dm³ at STP

The number of molecules in the volume (22.4 dm³) of D at STP = 6 x 10²³.

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Similar questions

(a) The volumes of gases A, B, C and D, are in the ratio, 1 : 2 : 2 : 4 under the same conditions of temperature and pressure.
(i) Which sample of gas contains the maximum number of molecules?
(ii) If the temperature and the pressure of gas A are kept constant then what will happen to the volume of A when the number of molecules is doubled?
(iii) If this ratio of gas volumes refer to the reactants and products of a reaction, which gas law is being observed?
(iv) If the volume of A is actually 5.6 dm³ at STP, calculate the number of molecules in the actual volume of D at STP.
(Avogadro's number is 6 × 10²³).
(v) Using your answer from (iv), state the mass of D if the gas is dinitrogen oxide (N₂O).
(N = 14; O = 16)
(b) Calculate the percentage of nitrogen in aluminium nitride. (Al = 27, N = 14)

The volumes of gases A, B, C and D are in the ratio 1:2:2:4 under the same conditions of temperature and pressure.
(i) Which sample of gas contains the maximum number of molecules?
(ii) If the temperature and the pressure of gas A are kept constant, then what will happen to the volume of A when the number of molecules is doubled?
(iii) If this ratio of gas volume refers to the reactants and products for a reaction, which gas law is being observed?
(iv) If the volume of A is actually 5.6 dm^3 at STP, of D at STP (Avogadro's Number is $6 \times 10^{23}$ .
(v) Using your answer from (iv), state the mass of D if the gas is dinitrogen oxide $(N_{2} O)$ .

(a) Calculate the number of moles and number of molecules present in 1.4 g of ethylene gas. What is the volume occupied by the same amount of ethylene?
(b) What is the vapour density of ethylene?
(Avogadro's number = 6 × 10²³; Atomic weight of C = 12, H = 1; Molar volume = 22.4 litres at STP)

Q. The number of molecules in 89.6 L of a gas at STP are

Q. The number of water molecules in 250

m L

of water is closest to
Given

D e n s i t y o f w a t e r i s 1.0 g m L^{- 1}; A v o g a d r o^{'} s n u m b e r = 6.023 \times 10^{23}

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The correct option is E 6.0 x 1023The volume of D will be 4 x 5.6 dm3 at STP = 22.4 dm3 at STP The number of molecules in the volume (22.4 dm3) of D at STP = 6 x 1023.

The correct option is E
6.0 x 10²³

The volume of D will be 4 x 5.6 dm³ at STP = 22.4 dm³ at STP

The number of molecules in the volume (22.4 dm³) of D at STP = 6 x 10²³.