Zinc reacts with hydrochloric acid according to the equation: Zn + 2HCl -> ZnCl2 + H2 How many moles of H2 are produced from 20.0 g of Zn?
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Choose one chemical that humans add to residential water tha…
Choose one chemical that humans add to residential water that is not present in lake (or the source) water. Explain its purpose. (2 marks)
The prediction of the amount of product that is produced in…
The prediction of the amount of product that is produced in a reaction calculated from the balanced chemical equation is the:
How many moles of HCl are required to make 500 ml of a 3.0 m…
How many moles of HCl are required to make 500 ml of a 3.0 mol/L solution of HCl?
How many moles are 3.011 x 1024 atoms of gold?
How many moles are 3.011 x 1024 atoms of gold?
A galvanized nail is coated with what metal?
A galvanized nail is coated with what metal?
Convert 10 g of NaOH into moles.
Convert 10 g of NaOH into moles.
Explain how a protective coating helps to prevent corrosion….
Explain how a protective coating helps to prevent corrosion. (2 marks)
The amount of product obtained from an experiment is called:
The amount of product obtained from an experiment is called:
How many grams of KCl are produced from 1 mole of Cl2 and ex…
How many grams of KCl are produced from 1 mole of Cl2 and excess K in the following reaction? 2K + Cl2 -> 2KCl