A6.55 g sample of aniline (c6h5nh2, molar mass = 93.13 g/mol) was combusted in a coffee-cup calorimeter. if the temperature rose by 32.9°c, use the information below to determine the heat capacity of the calorimeter.

4 c6h5nh2(l) + 35 o2(g) → 24 co2(g) + 14 h2o(g) + 4 no2(g)

δh°rxn = -1.28 x 104 kj

Which of the following best explains why the end of a spoon sticking out of a cup of hot water also gets hot? question 7 options: the heat from the hot water is conducted through the spoon handle the hot water heats the air surrounding the upper part of the spoon. the hot water causes a physical change in the spoon handle. the hot water causes a chemical reaction to take place in the spoon.

1. explain hydrogen peroxide, h 2 o 2 properties and decomposition reaction. 2. describe how each of the following natural cycles plays a part in earth’s climate system. (a) the water cycle (b) the carbon cycle

What is the source of continuous heat and energy that we receive from the sun