(1) (1)
Calculate the amount in moles of chlorine collected after 20 minutes.
Use Figure 3.
The volume of one mole of any gas at room temperature and pressure is 24.0 dm
Give your answer in standard form.
Moles of chlorine =
mol
(3)
(Total 14 marks)
Q4.

What type of solution is formed if 10 g of kclo3 are dissolved in 100g of water at 30

Which statement best describes the oxidation numbers of the atoms found in magnesium chloride? a. magnesium has a 2- oxidation number and chlorine has a 1+ oxidation number. b. magnesium has a 2- oxidation number and chlorine has a 2+ oxidation number. c. magnesium has a 2+ oxidation number and chlorine has a 1- oxidation number. d. magnesium has a 1+ oxidation number and chlorine has a 1- oxidation number.

Layers of rock containing fossils, like the layers illustrated here, are most likely composed of rocks.