What is heat

energy?

O

vibrations of particles of matter

O

energy that moves things

O

energy that is carried by light

O

energy of moving electrons

What is the mass of 4.6 moles of helium gas?

The reaction that takes place in a hydrogen-oxygen fuel cell is 2H2 (g) + O2 (g) ⟶2? Select the major product of the reaction and determine whether the reaction is exothermic or endothermic.

How many KJ are given off when 120 grams of water are cooled from 25°C to - 25°C?

15pts! Josiah describes cobalt (Co) as being shiny and able to conduct electricity. Using the periodic table, is he correct? Explain why or why not.

Give the complete balanced equation for the reaction that occurs when lithium carbonate (Li2CO3) is heated. You do not need to make the subscripts smaller in your answer; just write them out as regular numbers

Describe the steps you would use to solve this problem. In a scale drawing of a dining room floor plan, 10mm equals 2 meters. If the homeowners wanted to purchase flooring that costs $10.

In which of these samples do the molecules most likely have the least kinetic energy?

Just as heat can denature enzymes, so can a change in the pH. Enzymes that normally work in an acidic environment in the body can become denatured if the pH becomes too alkaline.

A group of students wants to see how temperature affects the time it takes for spilled water to dry up in the investigation what will be the dependent and independent variables

What is not true of white light?