2) A student weighs a sample four times and collects the following data: a) Calculate the mean showing all work. m1 = 32.14 g m2 = 32.11 g 32.08 g m4 = 32.16 g %D b) Calculate the standard deviation showing all work. m3 = c) Calculate the relative standard deviation showing all work.

If 227.9 Joules of heat are added to 25.96 grams of a liquid, raising the temperature of the liquid from 27°C to 33.8°C, what is the specific heat capacity of the liquid with units of J/g•°C? Report your answer with 3 significant figures.

Calculate the percent difference between x2 and x4 according to the equation below. (Assume x2 to be the accepted value.) Record the calculation in your notes.  x2 = 100.4 kJ x4 = -100.4 kJ  %difference = experimental value - accepted value x 100%                                          accepted value

How do I solve for the percentage of error of the experiment?  Data table:  mass of empty 8'' test tube: 41.47 mass of test tube and metal: 91.59 the initial temperature of metal: 10.5 degrees Celcius  mass of water in a cup: 75g  the initial temperature of water: 24.7 degrees Celcius  the final temperature of metal and water mix: 34.2 degrees celsius  specific heat of water: 4.184 j/g degrees celsius  specific heat of metal: 15.8 j/g celsius

Measuring the change in temperature versus time upon addition of a hot metal specimen to 10.3 mL of water with an initial temperature of 26.55 degrees Celsius led to a plot with a line with the equation y = -0.121x + 36.55. If the heat absorbed by the water is equal to the heat lost by the metal, determine the specific heat of the metal with a mass of 10.51 g to two decimal places.

A sheet of gold weighing 9.0 g and at a temperature of 13.8 °C is placed flat on a sheet of iron weighing 20.2 g and at a temperature of 57.8 °C. What is the final temperature of the combined metals? Assume that no heat is lost to the surroundings. Be sure your answer has the correct number of significant digits. GC ☐ x10 ☑ ملام 18 Ar 日。 ☑

A spherical container is filled with a gas, what is the mass in grams of this gas if the density of it is 0.2201 and the diameter of the container is L 4.65 ft? You must use the following equality. You MUST show all work. *1 ft = 12 in 1 in = 2.54 cm 1000 mL = 1 L Vol of sphere = %3| .3

What is the kinetic energy of a 23.1 g ball moving at 39.1 m/s? Report your answer with the correct number of significant figures. Do not include units in your answer.

A)   An iron nail with a mass of 12 gg absorbs 15 J of heat. If the nail was initially at 30 ∘C, what is its final temperature? Express your answer using two significant figures. B) When 47.1 J of heat is added to 13.8 g of a liquid, its temperature rises by 1.74 ∘C. What is the heat capacity of the liquid?

If the specific heat of a ceramic cup is 0.583 J/(g °C), how much heat (in J) is required to raise the temperature of the cup from 20.1°C to 87.1°C, given that its mass is 14.4 g? Enter your answer as a number without units. Use either standard or exponential format. A number 324.5 in exponential format is 3.245E2.