Barbara is converting 78 F to degrees Celsius. First, She subtracts 32 from 78. What is the next step?

a. Multiply 46 by 5/9

b. Multiply 46 by 9/5

c. Add 273 to 46

d. Subtract 273 from 46

If a chemical reaction such as photosynthesis begins with 6 atoms of carbon (C), how many atoms of carbon (C) should be in the products? A. 12 atoms of carbon (C) B. 6 atoms of carbon (C) C. 3 atoms of carbon (C) D. 2 atoms of carbon (C)

Describe the energy in coal and the way in which it's converted to electrical energy. Write 50 to 100 words.

The reactiveness of nonmetals depends on the atom's ability to what?

Which is an advantage of using chemical indicators?

What is the difference between thermal energy and temperature

rank the following list of aqueous solutions and solvents according to decreasing vapor pressure the substance with the higher vapor pressure should be placed at top 0.10 M glucose pure water 0.050 M urea 0.20 M sucrose

What does the p mean in 1s22s22p63s1?

Why are alkaline earth metals and alkali metals found in nature by themselves?

What are scientific models used for? Give an example of each of the following types of models: Idea, Physical, Computer.

The number of atoms in a mole of any pure substance is called