Which of the follwing is a pure substance: sugar, salt, water, or pepper? Explain how you know.

Is cobalt considered flammable

What is the molarity of a solution containing 8.0 miles of solute in 500. mL of solution

Four students measure the length of a paper clip whose actual length is 3.2 cm. whose measurements are precise but not accurate? A. Samuel: 2.7 cm, 2.7 cm, 2.7 cm, 2.8 cm B. Jose: 2.2 cm, 2.6 cm, 3.0 cm, 3.3 cm C. Nikita: 3.1 cm, 3.1 cm, 3.2 cm, 3.

What might cause stomach ph to become more acidic than normal?

Filtration, decantation, and evaporation are examples of ways in which scientists distinguish between elements and compounds separation by chemical means separation by physical means ways in which scientists separate compounds

A chemist determined by measurements that. 040 moles of gold participated in a chemical reaction. calculate the mass of gold that participated in the chemical reaction. round your answer to significant digits.

10) A screwdriver has the density of 5.5 grams per cubic centimeter. It also has the mass of 2.3 grams. What is the screwdriver's volume?

A chemist weighed out 20.7 g of sodium. Calculate the number of moles of sodium she weighed out

If 1.00 mol of argon is placed in a 0.500-L container at 20.0 ∘C, what is the difference between the ideal pressure (as predicted by the ideal gas law) and the real pressure (as predicted by the van der Waals equation) ? For argon, a=1.

Part 2: Finding Speed and Height Using Energy Directions: Use the KE and GPE equations to solve for speed or height depending on the situation. 1. A 1,000-kg car has 50,000 joules of kinetic energy. What is its speed? 2.