Calculate the percent composition of iron and oxygen when 13.3g of Fe combines completely with 5.7g of O.
What is 70% Fe and 30%?
100
True or false- most of the dust in your home is made of human skin?
What is true (up to 70%)?
200
This is the type of representative particles that carbon dioxide is comprised of. (Hint: Options include atoms, molecules, or formula units.)
What is molecules?
200
Provide the molar mass of phosphorous to four significant figures.
What is 30.97g/mol?
200
Calculate the volume of 0.442 mol of methane at STP.
What is 9.90L?
200
Of the following, which can be classified as an empirical formula (a smallest whole number ratio formula): S2C12, C6H10O4, or Na2SO3
What is Na2SO3?
200
Which U.S. President was assassinated in 1901?
Who is William McKinley?
300
This is the type of representative particles that lithium chloride is comprised of. (Hint: Options include atoms, molecules, or formula units.)
What is a formula unit?
300
Calculate the molar mass of sodium chloride.
What is 22.99g/mol+35.45g/mol = 58.44g/mol?
300
Determine the mass of 27.8mol of sodium chloride.
What is 1,620g?
300
Which of the following molecular formulas are also empirical formulas (simplest whole number ratio chemical formulas): ribose (C5H10O5), ethyl butyrate (C6H12O2), chlorophyll (C55H72MgN4O5), or DEET (C12H17ON)
What is chlorophyll and DEET?
300
How many liters of water would fill one cubic meter of volume?
What is 1,000L?
400
Determine the number of representative particles in 3.00 moles of tin.
What is 1.81x10^24 atoms?
400
Provide the molar mass for magnesium chloride. (Hint: Remember to balance charges when creating chemical formulas for ionic compounds.)
What is 95.21g/mol?
400
Calculate the number of moles contained in 17.8g of carbon dioxide.
What is 0.404moles?
400
Determine the percent composition for each element in magnesium chloride (Hint: Remember to balance charges when determining chemical formulas for ionic compounds).
What is 25.5% Mg 74.5% Cl?
400
What popular fad that started in the 1980's included terms like "hand glide" and "back slide"?
What is break dancing?
500
Calculate the number of moles found in 6.85x10^24 molecules of sulfur dioxide.
What is 11.3 moles?
500
Provide the molar mass for iron (III) oxide. (Hint: Remember to balance charges when writing the chemical formulas for ionic compounds.)
What is 159.70g/mol?
500
Calculate the mass of 12.01mol of ribose (C5H10O5).
What is 1,803g?
500
Determine the percent composition for each element in sucrose (C12H22O11).
What is 42.1% C, 6.5% H, 51.4% O?
500
Name five popular dance styles with five-letter names.