To what decimal place should each answer be rounded? How many significant figures does the rounded answer have?   101 cm−99.1 cm=1.9 cm     (unrounded) After rounding, the answer should be reported to the  and thus has  . 0.5 atm+9.8 atm=10.3 atm     (unrounded) After rounding, the answer should be reported to the   and thus

A 200. ml pyrexflask is filled to thebrim with water witha temperature of 25Celsius. How muchwater (ml) willoverflow when theflask and water isexposed to atemperature of 97Celsius.

To what decimal place should each answer be rounded? How many significant figures does the rounded answer have?

Determine the pressure of 2.581 moles of an ideal gas to THE WHOLE NUMBER in atm that has a volume of 395.0 mL at 292.2 K. R= 0.0821 Latm/(mol K)

How hot must you heat 369 mL of gas at 33.3°C for it to expand to 3.6 L?  Express your answer in Kelvin and round to 1 decimal place.  Be sure to use the proper abbreviation of the UNITS

calculate M.V. (1atm, 30 degrees C)

You inflate a balloon with 2.0 L air at a temperature of 10°C  and then increase the temperature to 45°C. You noticed that the volume of the balloon has changed. Assuming the pressure and moles of gas remains constant; calculate the “new” volume, in Liters, of the balloon at 45°C. Given: V1/T1 = V2/T2, K = 273 +°C A. 2.8 L B.2.3 L C.9.0L D.0.90 L

a. Given the following set of values for a gas, calculate the unknown quantity: P = 743.3 mm Hg V = ? L n = = 0.1021 mol T = 23.3 °C V = L b. Given the following set of values for a gas, calculate the unknown quantity: P = ? atm V = 28.4 mL n = 0.007052 mol T = 20.5 °C P = c. Given the following set of values for a gas, calculate the unknown quantity: P= 1.079 atm T = atm V = 44.7 mL n = 0.003411 mol T = ? K K

Barium can be analyzed by precipitating it as BaSO4BaSO4 and weighing the precipitate. When a  0.265 gg  sample of a barium compound was treated with excess H2SO4H2SO4 8.50×10−2 gg  of  BaSO4BaSO4 formed. What is the percentage of barium in the compound?

4. At 5°C and 1 atm, x L of O2 gas is required to react with 0.51 g of glucose, what is the value of x? The unbalanced reaction is shown below: C6H12O6 (s) + O2(g) → CO2(g) + H2O(l)