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If the pressure exerted on a 100-L weather balloon changes from 1.0 atm to 2.0 atm, what would be the volume of the balloon at the higher pressure? Assume the temperature does not change and tha balloon has no leaks.
Write the overall cell reaction of each. Identify the anode and cathode of each. Arrange the three metals in order of decreasing ease of oxidation(most easily oxidized metal first
Two students measure the density of gold. One works with a 100-g bar of pure gold. The other works with a 200-g bar of pure gold. Which student measures the larger density.
When 0.100g of graphite is burned completely in a bomb calorimeter(heat capacity =3.344kJ/?C), containing 3000 g of water, a temperature rise of 0.21?C is observed.
what is the total number of joules of heat energy absorbed when the temperature if 200.0g of water is raised from 10 degrees celcius to 40 degrees celcius.
element mercury has a density of 13.6 g/ml. how many kg of mercury could occupy a volume of 500ml?
What is the pH (3 significant figures to the right of the decimal point) of a 0.0500 M solution of sulfuric acid? Remember, the first ionization constant is "large,"
A sample of compact bone has a mass of 5.80 g and a volume of 3.00 cm3. What is the density of the sample?
What proportion of 3-phosphoglycerate will carry 14C after five enzymatic turnovers (five equivalents of CO2 are fixed) if purified active
Which of the following is not a buffer solution?
Capsaicin, the compound that gives the hot taste to chili peppers, has the formula C18H27NO3. (a) Calculate its molar mass.
A volume of 95.0 ml of H2O is initially at room temperature (22.0 C). A chilled steel rod at 2.00 C is placed in the water. If the final temperature of the system is 21.1 C .
How much energy in joules is required to heat 295 mL of coffee from 25.0 0C to 62.0 0C? Assume that the coffee has the same density, 0.997 g/mL, and specific heat capacity, 4.184 rm J/(gc. K) .
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