From the following pair choose the one with the larger radius: S or S-2.
Blog
When the following equation is balanced in acidic solution;…
When the following equation is balanced in acidic solution; NO3- + I- → IO3- + NO2the coefficient of NO3- is:
A [m] gram sample of potassium chlorate was decomposed accor…
A [m] gram sample of potassium chlorate was decomposed according to the following equation:2KClO3 → 2KCl + 3O2How many moles of oxygen are formed?
The density of gasoline is [d] g/mL at 20 oC. What is the m…
The density of gasoline is [d] g/mL at 20 oC. What is the mass of one gallon of gasoline? (1 qt = 0.9463 L, 4 qt = 1 gal) (answer in grams)
Suppose the following reaction is carried out starting with…
Suppose the following reaction is carried out starting with 103 grams of Ca3(PO4)2 and 75.0 grams of H2SO4. Which substance is the limiting reactant? (Hint: calculate the T.Y. for calcium sulfate first.)Ca3(PO4)2 + 3H2SO4 → 3CaSO4 + 2H3PO4
What volume (in liters) is occupied by [m] g of methane, CH4…
What volume (in liters) is occupied by [m] g of methane, CH4, at [t] oC and [p] atm?
Give (in order) the correct coefficients to balance the foll…
Give (in order) the correct coefficients to balance the following reaction:H2SnCl6 + H2S → SnS2 + HCl
An oxygen sample has a volume of [v] L at [t] oC and [p] tor…
An oxygen sample has a volume of [v] L at [t] oC and [p] torr. How many oxygen molecules does it contain?
The molar mass of an insecticide, dibromoethane, is 187.9. …
The molar mass of an insecticide, dibromoethane, is 187.9. Its molecular formula is C2H4Br2. How many atoms of carbon are in a sample of dibromoethane weighing [m] g?
When 19.8 g C2H6 and [m] g O2 react to form CO2 and H2O, how…
When 19.8 g C2H6 and [m] g O2 react to form CO2 and H2O, how many grams of water are formed? Make sure you balance the equation first. C2H6 + O2 → CO2 + H20