The specific heat capacity of a pure substance can be found by dividing the heat needed to change the temperature of a sample of the substance by the mass of Suppose 346. g of the substance the sample and by the change in temperature. The heat capacity of a certain substance has been measured to be 2.85 are heated until the temperature of the sample has changed by 22.9 °C. Write an equation that will let you calculate the heat Q that was needed for this temperature change. Your equation should contain only symbols. Be sure you define each symbol. Your equation: 2-0 Definitions of your symbols: -2.85 g . °℃ D-346. g - 22.9 °C X E A 3 dh Ar

The amount of energy needed to heat 2.00 grams of mercury from 50.00 to 90.00 is 11.28 Jules. The specific heat capacity of the sample is?

A 30.0 g sample of chromium is heated to 100.0 °C in a boiling water bath. The sample is added to a calorimeter charged with 45.0 mL of water at 34.1 °C. The final temperature of the calorimeter contents is 38.5 °C. Calculate the specific heat of chromium.

An ideal gas in a cylinder fitted with a piston expands at constant temperature from a pressure of 9 atm and a volume of 4.,0 L to a final volume of 13 L against a constant opposing pressure of 1.4 atm. How much heat does the gas absorb, expressed in units of L atm (liter x atm)? Latm

A 50.8 g sample of an unknown metal was heated to 700.0 ˚C then placed into 100.0 g of water (specific heat: 4.184) initially at 25.0 ˚C. The water and the unknown metal reach equilibrium when both are at 78.3 ˚C. What was the specific heat of the unknown metal?

10 A student heats 84.17 mL of water to 95.27°C using a hot plate. The heated water is added to a calorimeter containing 73.92 mL of cold water. The water temperature in the calorimeter rises from 2.15°C to 37.48°C. The specific heat capacity of water is 4.184 J and the density of water is g. °C 1.00 mL Assuming that heat was transferred from the hot water to the cold water and the calorimeter, determine the heat capacity of the calorimeter. J Heat capacity of calorimeter = °C

a 90.00g piece of metal is placed in water and the water gains 1230 J of heat as the temperature of the metal changes by 59.0 C. calculate the specific heat capacity of the metal

4. Determine the final temperature of water if 9.2 kJ of heat is added to 250 mL of 17°C water (the specific heat capacity of water is 4.184 J/g°C).

When a 0.740-g sample of trinitrotoluene (TNT), C,H,N,O, is burned in a bomb calorimeter, the temperature increases from 23.4 °C to 26.9 °C. The heat capacity of the calorimeter and its content is 3.35 kJ/°C. How much heat was produced by the combustion of the TNT sample? O 34.2 kJ O 11.7 kJ O 101.5 kJ

A sample of aluminum, initially at 5.0 °C, was placed in 18.0 g of water, initially at 25.0 °C. The final temperature of the water and the metal was 21.0 °C. The specific heat of water is 4.184 J g-1 °c-1 and aluminum is 0.940 J g-1 °C-1. Ignore the heat capacity of the container. What is the mass (in g) of the aluminum?