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The percent composition (by mass) of a compound is 40.0% carbon, 53.0 % oxygen and the rest is hydrogen. Find the empirical formula of the compound.
If 2.00g of N2 gas has a volume of 0.40L and a pressure of 6.0atm, what is its Kelvin temperature
When 24 mL of a 175 mL stock solution containing 1.6 M BaF2 is diluted to 70 mL, what is the concentration of Ba2+ in the new solution?
What is the final concentration of a solution made from 7.1 mL of 0.8 M CuSO4 and 14.3 mL of water?
Sulfur-35 is used in some medical procedures. The physical half-life of S-35 is 87.2 days. If the effective half-life of S-35 in the body is 76.4 days, what is its biological half life
Describe the apparent relationship between H3O and OH concentrations when an endpoint is reach in acid-base titration.
Calculate the maximum amount of CO2 that can be produced when 64.0 g of O2 and 64.0 g of CH3 OH are mixed for the reaction 2 CH3OH + 3 O2 → 2 CO2 + 4 H2 O .
2 nh3g co2g --gt h2nconh2s h2ogammonia gas at 223degc and 90. atm flows into a reactor at a rate of 550. lmin. carbon
Classify the following compounds and ions as strong acid, weak acid, strong base, weak base, or neutral. For each write the reaction(s) that justify your decision. If a substance is amphiprotic, show both reactions.
Compounds A and B react to give a single product, C. Write the rate law for each of the following cases and determine the units of the rate constant by using the units M for concentration and s for time.
The molar heat capacity of is described by the following equation over the range 300
115 grams of KCl is dissolved in 750mL of water (assume density=1.005g/mL). What would be the freezing point and boiling point of that solution assuming the Kf of water is 1.86oC/m and Kb is 0.512oC/m (assume that KCl fully dissociates with no pai..
Calculate the concentration of the chloride ion if you dilute 25 m of 0.20 M barium chloride to 100 ml with water
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