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Chemistry
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What is the volume of a gas in a closed system working under ideal conditions at r.t.p of 1.5 moles of gas?

PV = nRTP =101 kPa = 101 000 PaV =?T= 298 KR = 8.314 J K-1mol-1n = 1.5 molV = nRT / P = 1.5 mol x 8.314 J K-1 mol-1 x 298 K / 101 000 Pa = 0.0368 m3<...

Answered by Theo B. Chemistry tutor
1041 Views

A sample of the ore haematite contains 70% iron oxide. Calculate the amount of iron oxide in 2000 tonnes of haematite.

2000 tonnes H0.7 x 2000 tonnes = mass of iron oxide = 1400 tonnes

Answered by Daisy O. Chemistry tutor
3164 Views

Describe and explain how increasing concentration of a reactant changes the rate of reaction.

When you increase the concentration of a reactant, there are more reactant particles in a given volume of space. Consequently, there will be more collisions between the particles in a given amount of time...

Answered by Emily B. Chemistry tutor
1183 Views

How can the rate of a reaction involving gaseous molecules be increased?

If the pressure of a reacting gas is increased:the reactant particles are closer togetherthe frequency of collisions between reactant particles increasestherefore the rate of reaction inc...

Answered by Louise L. Chemistry tutor
1130 Views

How many protons, neutrons and electrons are in a sodium ion?

11 protons, 12 neutrons and 10 electrons.

Answered by Kismet J. Chemistry tutor
23339 Views

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