Blog

Convert 10 g of NaOH into moles.

Explain how a protective coating helps to prevent corrosion. (2 marks)

The amount of product obtained from an experiment is called:

How many grams of KCl are produced from 1 mole of Cl2 and excess K in the following reaction?  2K + Cl2 -> 2KCl

In the lab, 9.0 g of hydrogen, H2, is reacted with excess oxygen gas, O2, to produce 73.0 g of water. a)    What is the actual yield of water produced in the reaction? b)    What is the theoretical yield of water based on the balanced equation for the reaction? c)    What is the percentage yield of the reaction?

Some minerals have the same chemical composition but different crystal structures, a phenomenon termed _______. 

A common method of rust proofing the underside of cars is spraying on a protective coating of oil annually. Explain at least one negative environmental impact of the method of corrosion protection.   (2 marks)

The mid-oceanic ridge is an 80,000 km-long mountain range on the ocean floor. Where does this mountain range lie in terms of plate tectonic features?     

What is the most abundant mineral group?       

_______ are geological forces generated inside the Earth.