Grade 9 Science: Mole-Gram Conversion Worksheet
This worksheet provides practice problems for converting between moles and grams using molar mass, suitable for Grade 9 Chemistry students.
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Grade 9 Science: Mole-Gram Conversion
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Read each question carefully and show all your work. Use the periodic table to find the molar mass of each element. Round all molar masses to two decimal places.
Remember: Molar Mass is the mass of one mole of a substance (g/mol).
1. The molar mass of an element is numerically equal to its in grams.
2. To convert from moles to grams, you need to by the molar mass.
3. To convert from grams to moles, you need to by the molar mass.
1. Calculate the mass in grams of 2.5 moles of Sodium (Na).
2. What is the mass in grams of 0.75 moles of Carbon Dioxide (CO₂)?
1. How many moles are present in 50.0 grams of Water (H₂O)?
2. A sample of Calcium Carbonate (CaCO₃) has a mass of 125 grams. How many moles are in the sample?
1. Which of the following is the correct molar mass for Oxygen gas (O₂)?
16.00 g/mol
32.00 g/mol
8.00 g/mol
1.00 g/mol
2. If you have 3 moles of NaCl, what is its approximate mass?
58.44 g
116.88 g
175.32 g
29.22 g
1. The molar mass of a compound is the sum of the atomic masses of all atoms in the compound.
True
False
2. One mole of any substance contains Avogadro's number of particles.
True
False
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