Select all that apply. when the products of a reaction have more energy than the reactants: the reaction is exothermic. the reaction is endothermic. the reactants gave up energy. the δh is positive.

A 1.00-g sample of octane (C8H18) is burned in a bomb calorimeter that has a heat capacity of 5.80 kJ/°C. The temperature of the calorimeter rises from 25.00oC to 33.20oC. What is ΔU per mole for the combustion of octane?

Towards what are the alpha particles being directed?

What is the total number of valence electrons in an atom of germanium in the ground state

What answers below correctly identifies the type of change and explanation for the mixture of calcium carbonate and hydrochloride acid

Which of the following best describes how an electron moves when it absorbs or releases exact amounts of energy?

What distance is travled by a police car that moves at a constant speed of 1.5 km/min for 5.0 min?

You have 3 L of a 5M solution of calcium chloride. How many L would you be able to make of a 0.5M solution?

Is the knowledge and tools that people use to manipulate their environment. a. Ethnocentrism c. Diffusion b. Technology d. Reformulation

Suppose that a solution is tested for NO2 ion by adding 3M H2SO4 and heating, repeating this process until no further reaction occurs.

Is pepperoni pizza an element?