Calculate the average deviation of the following specific heat determinations: 0.18 J/g °C 0.34 J/g °C 0.27 J/g °C

25.0 mL of 2.00M HCI and 25.0 mL of 1.00M NaOH are mixed in a coffee cup calorimeter. The temperature increases from 25.60°C to 28.20°C. What is dHxn for the reaction of HCI and NaOH, in kJ/mol? Provide numerical answer in kJ/mol (no units, just number). Include + or - sign as relevant. Use appropriate sig figs. Note: check stoichiometry, there may be a limiting reagent!

What is the heat capacity of 0.14 kg of water in J/°C?

The specific heat of a certain type of cooking oil is 1.75 J/ (g.°C). How much heat energy is needed to raise the temperature of 2.71 kg of this oil from 23 °C to 191 °C? 796.7 q = J Incorrect

Find the minimum amount of energy it takes to raise 1.00 pound of lead (454g) from room temperature 25 Celsius to its melting point 327 Celsius and then melt it.

Acetylene burns in air according to the following equation. C2H2(g) + 5/2 O2(g) 2 CO2(g) + H2O(g) H0rxn = -1255.8 kJ Given that H0f of CO2(g) = -393.5 kJ/mol and H0f of H2O(g) = -241.8 kJ/mol, what is H0f of C2H2(g)?

A piece of silver with a mass 368 g has a heat capacity of 87.2 J/°C. What is the specific heat of silver? Group of answer choices 4.184 J/g·°C 0.385 J/g·°C 0.237 J/g·°C 0.184 J/g·°C 1.322 J/g·°C

- 1 A sample of glass, which has a specific heat capacity of 0.670 J-g.°C¯', is put into a calorimeter (see sketch at right) that contains 150.0 g of water. The glass sample starts off at 94.1 °C and the temperature of the water starts off at 24.0 °C. When insulated container the temperature of the water stops changing it's 28.2 °C. The pressure remains constant at 1 atm. water dlo Calculate the mass of the glass sample. Be sure your answer is rounded to the correct number of significant digits. sample 18 Ar a calorimeter x10

Which of the following substances (with specific heat capacity provided, c) would show the greatest temperature change upon absorbing 100.0 J of heat? Group of answer choices 10.0 g Fe, c for Fe = 0.449 J/g°C 10.0 g Ag; c for Ag= 0.235 J/g°C 10.0 g Au; c for Au = 0.128 J/g°C      10.0 g H2O, c for H2O = 4.18 J/g°C