Mary experimentally determines the boiling point of ethanol to be 72.2°C when it is actually 78.2°C. Determine both the experimental error and the percent error for Mary's experiment.

How many joules of heat are absorbed then 35.7 grams of steam is heated from 115 degrees celsius  to 136 degrees celsius, the specific heat of steam is 2.03 J/g degrees celsius

Enter an equation for the formation of SnO2(s)SnO2(s) from its elements in their standard states. Express your answer as a chemical equation including phases.

Part C: energy in changes of state C1. Mass of empty calorimeter cup with lid C2.Mass of calorimeter with lid+water 6.835 g 107.15g 1 °C C3 Final water temperature Initial water temperature 22 °C C4 Mass of calorimeter with lid+water+melted ice 135.64 g Calculations C5 Mass of water C6 Temperature change C7 Calories lost by water °C cal cal Calories used to melt ice C8 Mass of ice that melted C9 Heat of fusion (calories to melt 1 g of ice) Show calculations for C7 Calories lost by water, C8 Mass of ice that melted and C9 heat of fusión

What does s-cis mean and why is it important?

How many grams of water can be cooled from 39 °C to 19 °C by the evaporation of 44 g of water? (The heat of vaporization of water in this temperature range is 2.4 kJ/g. The specific heat of water is 4.18 J/g.K.) Express your answer using two significant figures. m = 196) ΑΣΦ ? g

In the laboratory a student uses a "coffee cup" calorimeter to determine the specific heat of a metal. She heats 19.7 grams of iron to 99.34°C and then drops it into a cup containing 83.8 grams of water at 20.66°C. She measures the final temperature to be 22.66°C. Assuming that all of the heat is transferred to the water, she calculates the specific heat of iron to be J/g °C.

Calculate the amount of heat needed to melt 95.2 g of solid benzene (CH) and bring it to a temperature of 17.7 °C. Be sure your answer has a unit symbol and the correct number of significant digits. ☐ x10 X

In the laboratory a student uses a "coffee cup" calorimeter to determine the specific heat of a metal. She heats 18.4 grams of titanium to 98.86°C and then drops it into a cup containing 75.9 grams of water at 23.43°C. She measures the final temperature to be 25.59°C. Assuming that all of the heat is transferred to the water, she calculates the specific heat of titanium to be J/g°C.

how many joules of heat are required to heat 25.0 g of ethyl alcohol from The prevailing room temperature 22.5°C to its boiling point 78.5°C