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Mole Calculation Practice Worksheet Answer the following questions: 1) How many moles are in 25.0 grams of water? 2) How many grams are in 4.500 moles of Li 2O? 3) How many molecules are in 23.0 moles of oxygen? 4) How many moles are in 3.4 x 10 23 molecules of H 2SO 4? 5) How many molecules are in 25.0 grams of NH 3?
GCSE Chemistry . Total Marks: /34. Moles. Q1: What are the units chemical quantities are often measured in? A= Moles. Q2: What is the symbol for this unit? A= mol. Q3: Complete the following, the first is given as an example. A) Compound: NaOH Relative Formula Mass: 40 Mass of one mole: 40. B) (1 mark) mark) Compound: CO2.
Moles Q1: What are the units chemical quantities are often measured in? (1 mark) Q2: What is the symbol for this unit? (1 mark) Q3: Complete the following, the first is given as an example. A) B) C) (6 marks)
There are three definitions (equalities) of mole. They are: 1 mole = 6.02 x 1023 particles. 1 mole = molar mass (could be atomic mass from periodic table or molecular mass) 1 mole = 22.4 L of a gas at STP (You do not need to worry about this yet) Each definition can be written as a set of two conversion factors.
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Mole Calculation Worksheet. 1) How many moles are in 40.0 grams of water? 2) How many grams are in 3.7 moles of Na2O? 3) How many atoms are in 14 moles of cadmium? 4) How many moles are in 4.3 x 1022 molecules of H3PO4? 5) How many molecules are in 48.0 grams of NaOH?
Microsoft Word - Chemsheets GCSE 1092 (Moles) ANS.docx. 1) Calculate the number of moles of each of the following substances. Give your answers to 3 significant figures. a) 90.0 g of H2O. 90.0 = 5.00. 18.
