Calculation In Chemistry IGCSE Quiz!
8 Questions
| Total Attempts: 349
(212).jpg "Calculation In Chemistry IGCSE Quiz!")
Are you familiar with calculations in chemistry, and do you think you can pass this quiz? In a chemical reaction, one or more reactants are converted into products. The objective of a chemical equation is to express this relation in terms of the actual reactants' formulas and items that identify a specific chemical change. If you are interested in how calculation in chemistry works, this is the quiz for you.
Questions and Answers
- 1.The formula of Iron III hydroxide is:
- A.
Fe(OH)3
- B.
Fe(OH)2
- C.
Fe(OH)4
- D.
FeOH
- 2.The relative formula mass of Calcium hydroxide Ca(OH)2 is:
- A.
74g
- B.
57g
- C.
74amu
- D.
57amu
- 3.The mass of 2 mol of carbon dioxide CO2 is:
- A.
88 amu
- B.
44g
- C.
88 g
- D.
44 amu
- 4.How many moles are there in 9.8g of sulphuric acid H2SO4?
- A.
1 mol
- B.
2 mol
- C.
0.1 mol
- D.
0.2 mol
- 5.The number of atoms found in one mole of silver atoms is called?
- A.
Wissam's number
- B.
Avogadro's number
- C.
Newton's number
- D.
Pascal's number
- 6.When the following equation is balanced, the sum of all coefficients will be H2 + O2 ---> H2O
- A.
2
- B.
3
- C.
4
- D.
5
- 7.When the following chemical equation is balanced, the coefficients will be respectively N2 + H2 --> NH3
- A.
1 - 2 - 3
- B.
3 - 2 - 1
- C.
1 - 3 - 2
- D.
0 - 3 - 2
- 8.5 moles of C6H12O6 has a mass:
- A.
90
- B.
900
- C.
9
- D.
0.9
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