Reference no: EM132542843

Completing an assignment and want to check to see if I am correct in these answers and using the correct formulas please! Thank you so much.

-1. to test the stoichemistry of a reaction, a student placed a copper wire into a solution of silver nitrate. the reaction is Cu(s)+ 2 AgNO3(aq) = Cu(NO3)2(aq) + 2 Ag(s) the student collected and recorded the following data:
mass of Cu(s) before reaction = 25.80 g
volume of AgNo3(aq) = 200 millilitres
concentration of AgNO3(aq) = 0.350 mol/L

What mass of copper metal remains unreacted after the reaction has finished

-2. A 1.00L sample of cooking gas taken from a cylinder was collected. It's mass, measured at 27.0 Celsius and 100 kPa, was 1.768 g. calculate the molar mass of the cooking gas.

-3. a sample solution has a concentration of 12.4% by mass. what mass of solute is present at 50.0g of the solution

-4.Boron trichloride, BCl3(g), Is a colorless gas that often is used as a reactant in the synthesis of other compounds. to produce BCl3(G), Boron oxide is reacted with carbon and chloride. B2O3(s) + 3Cl2(s) = 2 BCI3(g) + 3CO(g)

a. If 57.0g of B2O3(s) reacts, what mass of boron trichloride can be expected?

b. in a laboratory, after the reaction was complete, 159.0 g of BCl3(g) was collected. using your answer for this question, calculate the percent yield of BCl3(s) in this reaction.

-5. With sufficient oxygen present, pentane burns according to the reaction:

C5H12(l) + 8 O2(g) = 5 CO2(g) + 6 H2O(g)

What volume of oxygen at SATP is required to produce 48.0 L of CO2(g) at SATP?

-6. An unknown ionic solid is dissolved in distilled water to make a blue aqueous solution. A flame test is performed and it produces a green flame. which of the following cautions did the ionic solution most likely contain? A. nickel(II) B. chromium(II) C. barium D. copper(II)