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Questions and Answers
Convert 8.94 x 10³ nmol into mmol.
Convert 8.94 x 10³ nmol into mmol.
8.94
How many silicon atoms are in a glass microscope slide (SiO₂) with a mass of 7.036 g?
How many silicon atoms are in a glass microscope slide (SiO₂) with a mass of 7.036 g?
7.542 x 10²²
A piece of copper wire has a mass of 2.561 kg. How many moles of copper are in this piece of copper wire?
A piece of copper wire has a mass of 2.561 kg. How many moles of copper are in this piece of copper wire?
40.24
A 15.55 kg sample of carbon has how many carbon atoms in the sample?
A 15.55 kg sample of carbon has how many carbon atoms in the sample?
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How many millimoles of sodium hydrogen carbonate (NaHCO₃) are in a 5.681 x 10⁴ ng sample of sodium hydrogen carbonate (NaHCO₃)?
How many millimoles of sodium hydrogen carbonate (NaHCO₃) are in a 5.681 x 10⁴ ng sample of sodium hydrogen carbonate (NaHCO₃)?
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A piece of chalk (CaCO₃) has a mass of 24.056 g. How many oxygen atoms are in this piece of chalk?
A piece of chalk (CaCO₃) has a mass of 24.056 g. How many oxygen atoms are in this piece of chalk?
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A sample of aluminum has 4.689 x 10²⁸ atoms of aluminum, what is the mass of this sample in megagrams?
A sample of aluminum has 4.689 x 10²⁸ atoms of aluminum, what is the mass of this sample in megagrams?
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A sample of glucose (C₆H₁₂O₆) has 2.365 x 10²⁵ atoms of hydrogen, what is the mass of this sample of glucose in kg?
A sample of glucose (C₆H₁₂O₆) has 2.365 x 10²⁵ atoms of hydrogen, what is the mass of this sample of glucose in kg?
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A sample of tin that is 1.00-inch cube has how many atoms of tin in the sample? Density of tin equals 7.31 g/cm³.
A sample of tin that is 1.00-inch cube has how many atoms of tin in the sample? Density of tin equals 7.31 g/cm³.
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A 1.323 ng sample of adenosine triphosphate (C₁₀H₁₆N₅O₁₃P₃), has how many phosphorus atom in the sample? MM = 507.18 g/mol
A 1.323 ng sample of adenosine triphosphate (C₁₀H₁₆N₅O₁₃P₃), has how many phosphorus atom in the sample? MM = 507.18 g/mol
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A 15.34 dL sample of ethylene glycol C₂H₆O₂ has how many oxygen atoms in the sample? Ethylene glycol density equals 1.1132 g/cm³.
A 15.34 dL sample of ethylene glycol C₂H₆O₂ has how many oxygen atoms in the sample? Ethylene glycol density equals 1.1132 g/cm³.
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Convert 12.25 x 10¹⁷ picoliters into inch cube.
Convert 12.25 x 10¹⁷ picoliters into inch cube.
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How much is 1.75 m³ of gold value in dollars? Density of Gold = 19.3 g/cm³, 2.20 lbs = kg, 2020.13 dollars = 1 oz
How much is 1.75 m³ of gold value in dollars? Density of Gold = 19.3 g/cm³, 2.20 lbs = kg, 2020.13 dollars = 1 oz
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The density of the sample of solid is 65.24 lbs/0.7894 ft³, if the molar mass of the solid is 652.25 g/mol how many moles of the solid are present in the sample in 4.500 L? 2.20 lbs = 1 kg
The density of the sample of solid is 65.24 lbs/0.7894 ft³, if the molar mass of the solid is 652.25 g/mol how many moles of the solid are present in the sample in 4.500 L? 2.20 lbs = 1 kg
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The speed of light is 3.00 x 10⁸ m/s, convert this velocity into inch/ns. 1inch = 2.54 cm
The speed of light is 3.00 x 10⁸ m/s, convert this velocity into inch/ns. 1inch = 2.54 cm
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What is the number of protons in a 1.89 ng sample of ethanol (C₂H₆O). All the protons not just hydrogen.
What is the number of protons in a 1.89 ng sample of ethanol (C₂H₆O). All the protons not just hydrogen.
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What is the density in g/cm³ of a liquid sample of a compound that has a mass of 60.01 dg and a volume of 2.35 dL?
What is the density in g/cm³ of a liquid sample of a compound that has a mass of 60.01 dg and a volume of 2.35 dL?
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A sample of potassium permanganate KMnO₄ has a mass of 56.23 g, how many manganese atoms are present in this sample?
A sample of potassium permanganate KMnO₄ has a mass of 56.23 g, how many manganese atoms are present in this sample?
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A sample of a molecule with the chemical formula C₇H₈N₄O₂ has 3.651 x 10²⁵ molecules in the sample. What is the mass of the sample in kilograms?
A sample of a molecule with the chemical formula C₇H₈N₄O₂ has 3.651 x 10²⁵ molecules in the sample. What is the mass of the sample in kilograms?
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How many molecules of water are 0.7500 L of water? The density of water = 1.00g/mL
How many molecules of water are 0.7500 L of water? The density of water = 1.00g/mL
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A sample table salt (NaCl) has a mass of 8.552 x 10² µg. How many protons are in this sample of table salt??
A sample table salt (NaCl) has a mass of 8.552 x 10² µg. How many protons are in this sample of table salt??
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A sample of paraffin wax (C₂₅H₅₂) has a mass of 58.365 g. Find the number of hydrogen atoms in the candlestick.
A sample of paraffin wax (C₂₅H₅₂) has a mass of 58.365 g. Find the number of hydrogen atoms in the candlestick.
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If a box filled with air has a volume of 1.25 x 10⁴ cm³, the density of air is 1.19 g/L and the composition of air is 78.0% nitrogen. How many nitrogen molecules are in the box?
If a box filled with air has a volume of 1.25 x 10⁴ cm³, the density of air is 1.19 g/L and the composition of air is 78.0% nitrogen. How many nitrogen molecules are in the box?
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A sample of rust(Fe₂O₃) has 7.356 x 10²³ atoms of oxygen, what is the mass of the sample in decigrams?
A sample of rust(Fe₂O₃) has 7.356 x 10²³ atoms of oxygen, what is the mass of the sample in decigrams?
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A 65.25 mL sample of isopropyl alcohol (C₃H₇OH) contains how many carbon atoms? The density of isopropyl alcohol is 0.786 g/mL.
A 65.25 mL sample of isopropyl alcohol (C₃H₇OH) contains how many carbon atoms? The density of isopropyl alcohol is 0.786 g/mL.
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Flashcards
Mole (chemistry)
Mole (chemistry)
A unit to measure the amount of substance, containing 6.022 x 10²³ particles.
Avogadro's number
Avogadro's number
The number of particles in one mole of a substance, approximately 6.022 x 10²³.
Molar mass
Molar mass
The mass of one mole of a substance, typically expressed in grams per mole (g/mol).
Concentration
Concentration
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Stochiometry
Stochiometry
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Empirical formula
Empirical formula
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Molecular formula
Molecular formula
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Dilution
Dilution
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Molarity (M)
Molarity (M)
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Limiting reagent
Limiting reagent
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Study Notes
Mole Practice Questions
- Question 1: Convert 8.94 x 103 nmol to mmol.
- Question 2: Determine the number of silicon atoms in a glass microscope slide (SiO2) with a mass of 7.036 g.
- Question 3: Calculate the moles of copper in a 2.561 kg piece of copper wire.
- Question 4: Calculate the number of carbon atoms in a 15.55 kg sample of carbon.
- Question 5: Calculate the millimoles of sodium hydrogen carbonate (NaHCO3) in a 5.681 x 104 ng sample.
- Question 6: Determine the number of oxygen atoms in a 24.056 g piece of chalk (CaCO3).
- Question 7: Calculate the mass (in megagrams) of an aluminum sample containing 4.689 x 1028 atoms of aluminum.
- Question 8: Calculate the mass (in kg) of a glucose (C6H12O6) sample with 2.365 x 1025 hydrogen atoms.
- Question 9: Determine the number of tin atoms in a 1.00-inch cube of tin. Tin density is 7.31 g/cm3.
- Question 10: Calculate the number of phosphorus atoms in a 1.323 ng sample of adenosine triphosphate (ATP; C10H16N5O13P3). ATP molar mass is 507.18 g/mol.
- Question 11: Calculate the number of oxygen atoms in a 15.34 dL sample of ethylene glycol (C2H6O2). Ethylene glycol density is 1.1132 g/cm3.
- Question 12: Convert 12.25 x 1017 picoliters to cubic inches.
- Question 13: Calculate the value in dollars of 1.75 m3 of gold. Gold density is 19.3 g/cm3. Note conversions: 2.20 lbs = 1 kg, 2020.13 dollars = 1 oz.
- Question 14: Calculate the moles of a solid with a density of 65.24 lbs/0.7894 ft3 and molar mass of 652.25 g/mol present in 4.500 L of the sample.
- Question 15: Convert the speed of light (3.00 x 108 m/s) to inches per nanosecond (ns). Note 1 inch = 2.54 cm.
- Question 16: Calculate the number of protons in a 1.89 ng sample of ethanol (C2H6O).
- Question 17: Calculate the density (in g/cm3) of a liquid with a mass of 60.01 dg and a volume of 2.35 dL.
- Question 18: Determine the number of manganese atoms in a 56.23 g sample of potassium permanganate (KMnO4).
- Question 19: Find the mass (in kilograms) of a sample containing 3.651 x 1025 molecules of a compound with the formula C7H8N4O2.
- Question 20: Calculate the number of water molecules present in 0.7500 L of water. The density of water is 1.00 g/mL.
- Question 21: Determine the number of protons in a 8.552 x 102 µg sample of table salt (NaCl).
- Question 22: Calculate the number of hydrogen atoms in a 58.365 g sample of paraffin wax (C25H52).
- Question 23: Determine the number of nitrogen molecules in a 1.25 x 104 cm3 air sample. Air density is 1.19 g/L and 78.0% nitrogen by composition.
- Question 24: Calculate the mass (in decigrams) of a rust (Fe2O3) sample with 7.356 x 1023 oxygen atoms.
- Question 25: Determine the number of carbon atoms in a 65.25 mL sample of isopropyl alcohol (C3H7OH). Isopropyl alcohol density is 0.786 g/mL.
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Description
Test your skills with these challenging mole practice questions! From converting concentrations to calculating the number of atoms in various substances, this quiz covers a range of topics in chemistry. Ideal for students looking to reinforce their understanding of moles and atomic calculations.
