What two kinds of energy are associated with flames

Hannah is comparing a rock from a riverbed and a rock from deep underground. One is very smooth, and the other has very rough edges. Explain why each rock was probably found in that location

What trends did you notice about the temperature of the soil and the air temperature over time? Question 1 options: When air temperature increased, soil temperature increased. When air temperature decreased, soil temperature increased.

What are the charges and relative masses of the 3 main subatomic particles

The heat of vaporization of a liquid is 1340 joules per gram. What is the minimum number of joules needed to change 40.0 grams of liquids

How many chlorine (ci) atoms would be in 4 molecule of salt (4naci)

1. A sample of sodium chloride (NaCl) has a mass of 28.36g. Calculate the number of moles of NaCl in the sample. Show your work. 2. Calculate the number of moles of each element (number of moles of Na and number of moles of Cl) in NaCl in the sample.

How can we predict how the moon will change appearance from day to day?

When is the Sun directly overhead in the continental United States? A. always B. in the summer C. never D. at noon

Predict whether or not a precipitate forms upon mixing 175.0 ml of a 0.0055 mkcl solution with 145.0 ml of a 0.0015 m agno3 solution. identify the precipitate, if any.

The nucleus of one boron atom has 5 protons and 4 neutrons wjat is the total number of electrons in a boron atom