Which of the following statements are always true? Never true? Not always true?
A compound wit the molecular formula C6H6 has the same simplest formula.
The mass percent of copper in CuO is less than in Cu2O.
The limiting reactant is the one p
benzene (C6H6) reacts with bromine (Br2)
bromobenzene(C6H5Br) is obtained:
C6H6 + Br2 C6H5Br +
What is the theoretical yield of bromobenzene in this reaction
when 30.0g of benzene reacts with 65.0 g of bromine?
B. If the actual yield of
Write the most common guidelines to determine significant figures (digits) with an example?
Use factor labeling method to convert the following:
a. 515 m = _ miles.
b. 200 in = _ meters
c. 325 days = _ seconds.
d. 20 gallons = _ ml
What is a solute and solvent? Define Molarity, Molality.
66. Calculate the molarity of a solution that contains 0.0345 mol NH4Cl in
exactly 400 ml of
67. Calculate the molarity of a solution that contains 20.0grams of sodium
Determine the number of molecules present in 4.56 mol of nitrogen (N2).
List the following as diatomic molecule, molecular compound, ionic compound or
i. Rust (Fe2O3)
Determine the formula weight for the following:
d. CaSO4. 2 H2O
Calculate the percentage by mass of the following compounds:
c. Ammonium Nitrate.
Determine the empirical formula of the compounds w
Define Acid, base and salt? Give some examples of each.
What mass of copper is required to replace silver from 4.00g of silver nitrate dissolved in
Cu(s) + AgNO3 Cu(NO3)2 + Ag.
Write the chemical formulas for the following compounds:
Give the chemical symbols for the following elements:
d. Nitrogen e. Helium f. Krypton
Label each of the following as either a physical process or a chemical proc
Write a balanced equation for the following:
Reaction of boron trifluoride gas with water to give liquid
hydrogen fluoride and solid boric acid,(H3BO3).
Reaction of magnesium oxide with Iron to form Iron (III) Oxide