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A group 2 metal, M, is reacted with water so that M + 2H2O --> M(OH)2 + H2. 0.162g of metal produces 97.0cm3 of gas at RTP. Identify M.

1 mole of gas is produces for 1 mole of metal used.

n (moles) = volume/24000 ---- This is because 1 mole of a gas occupies 24000cm3 of space, so it's...

Answered by Cory S. • Chemistry tutor

16308 Views

Explain why the first ionisation energy of strontium is less than the first ionisation energy of calcium

Both of these are alkali-earth elements, this means that both elements have the same amount of outer-shell electrons (2 electrons). Strontium is a row below calcium, meaning it has an additional electron ...

Answered by Cory S. • Chemistry tutor

35142 Views

1) Gluconeogenesis 2) Glycogenesis 3) Glycolysis. Which is stimulated by glucagon production? [A] 1, 2, 3 [B]1 [C] 2, 3 [D] 1,2

B is the answer. Glucagon stimulates an increase in blood sugar/ [glucose] Gluco means glucose is the product Glyco mea...

Answered by James M. • Biology tutor

3846 Views

What three factors make up the criteria of a biodiversity hotspot?

Species richness, endemism and level of threat

Answered by Isabella W. • Geography tutor

1994 Views

Explain why xenon has a lower first ionization energy than neon.

Xenon has a bigger atomic radius therefore it experiences more shielding.This results in a decrease in nuclear attraction therefore less energy is required to remove an electron from the outermost energy ...

Answered by Olivia I. • Chemistry tutor

15027 Views