Which is true of chemicals?

A. Things containing chemicals always cost a lot of money.

B. Chemicals are never dangerous.

c. Chemicals are in many substances in a home.

D. Chemicals are rarely found on Earth.

A group of students investigated the chemical reaction of a mixture of sodium chloride and silver nitrate. Which tools should be used when determining if the chemical reaction obeys the law of conservation of mass? 8.

A typical person has an average heart rate of 75.0 beats/min. Calculate the following a) How many beats does she have in 7.0 years? b) How many beats in 7.000 years? Pay close attention to significant figures in this question.

Which aqueous solution should form a precipitate with aqueous cu (no3) 2? 1. kno3 2. cuso4 3. k2so4 4. k2s?

Technician A says that objects with high permeability allow magnetic lines of flux to flow easily through their material.

As the atoms of the elements in group 1 are considered in order from top to bottom, compared to the ionization energy of the atom above it, the ionization energy of each successive atom

Our body solution tests at a pH of about 6.8. This pH is:

A diatomic gas has the molar mass of 38.00g/mol. what is the possible formula?

Which of the following is the final concentration of KCl if 500 ml of 0.25 M KCl is diluted to a final volume of 5 L? 0.025 L 0.0025 L 25 L 2.5 L

What do you use to measure mass

A salt shaker filled with 17.0g sodium chloride contain how many moles?