3. What is the volume of the liquid in the container? Be sure to report the...
A sample of wet argon is collected in a 2.46 L container at 775 torr and 30.2 °C. It was subsequently found that there were 0.0480 moles of water vapor in this sample. How many moles of argon gas are in the sample? Report your answer to the correct number of significant figures.
If the density of a object is 7.89 g/mL and the volume is 4.09 mL, what is the mass? Be sure your answer has the correct number of significant figures. Your Answer: ________ _______ Answer units
A 1.1 L container of liquid nitrogen is kept in a closet measuring 1.2 m by 1.3 m by 1.8 m. Assuming that the container is completely full, that the temperature is 23.1 °C, and that the atmospheric pressure is 1.1 bar , calculate the percent (by volume) of air that is displaced if all of the liquid nitrogen evaporated. (Liquid nitrogen has a density of 0.807 gmL−1.) Express your answer using two significant figures
What is the mass (in grams) of a femur (leg bone) having a volume of 118 cc? The density of bone is 1.8 g/cc. Iron has a density of 7.8 g/cc. What is the mass, in grams, of a 4.4 cm3 piece? What is the volume (in cc) of a sample of mercury that has a mass of 20.5 g. The density of mercury is 13.6 g/cc. Aspirin has a density of 1.40 g/cc. What is the volume in cubic...
The given graduated cylinder is calibrated in milliliters (mL). Determine the volume of liquid in the graduated cylinder and report it to the correct number of significant figures. 50 பொற்ப volume: xid mL 40 TOOLS x100 30 20
3 attempts left Check my work Be sure to answer all parts. Report problem How many moles of water contain each of the following number of molecules? Hint points Report your answer using appropriate number of significant figures. Solution a. 8.37 x 1025 molecules Guided Solution eBook mol Print b. 3.97 x 10-2 molecules mol References c. 2.0 x 1024 molecules mol
What volume of gas would result if 245 mL of neon gas is compressed from 1.34 atm to 2.67 atm at constant temperature? WebAssign will check your answer for the correct number of significant figures. mL A favorite demonstration in introductory chemistry is to illustrate how the volume of a gas is affected by temperature by blowing up a balloon at room temperature and then placing the balloon into a container of dry ice or liquid nitrogen (both of which...
3 atempi 3 attempts left Check my work Be sure to answer all parts. Please report your answer to the correct number of significant figures. Determine the Ky of a weak base if a 0.613 M aqueous solution of the base at 25°C has a pH of 10.88. | x 10 (Enter your answer in scientific notation.)
3. (10 points) Assume that a container of liquid purified water at P=1 bar can be superheated to reach T=376 K without boiling. A nucleation event then takes place and the water quickly reaches equilibrium. Calculate the percentage volume increase upon the nucleation, i.e. how does the volume of the remaining liquid and produced vapor compare to the volume of the liquid prior to the nucleation. Use the heat capacity at constant pressure value Cp=4.215J/(g K). The enthalpy change on...
Be sure to answer all parts. Be sure to report your answer to the correct number of significant figures. Determine Kb of the weak base B whose conjugate acid HB+ has Ka 6.2 × 10−4. × 10 Determine the Ka of the weak acid HA whose conjugate base has Kb 2.1 × 10−8.