Which describes what happens when two minerals have different arrangements of their atoms?

A.

They have different hardnesses.

B.

They have different colors.

C.

They have different streaks.

D.

They have different cleavages.

What is the molality of an aqueous kbr solution with a mole fraction of kbr, x, equal to 0.245?

A certain FM radio wave has a frequency of 1.31 x 108 Hz. Given that radio waves travel at 2.99 x 108 m/s, what is the wavelength of this FM radio wave? (Round your answer to three significant figures.)

How many liters of water can be boiled by burning 1 kg of propane? Round your answer to the nearest whole number.

A solution containing 1.15 mol benzene dissolved in carbon tetrachloride has a concentration of 0.86 m. How many kilograms of carbon tetrachloride must the solution contain?

List the properties of the metalloids in the P block.

Which of the following equilibria would be impacted by a change in pressure? Select the correct answer below: H2 (g) + I2 (g) →2HI (g) NO (g) + O3 (g) →NO2 (g) + O2 (g) 2SO3 (g) →2SO2 (g) + O2 (g) CO (g) + H2O (g) →CO2 (g) + H2

A common stain remover is sold in concentrated form as 3M sodium hypochlorite (NaOCl). You need to create 400 milliliters of a 0.5M solution of sodium hypochlorite to fill a spray bottle. What volume of 3M sodium hypochlorite is needed? 15.0 mL 66.

A chemical reaction that takes in heat is called: exothermic endothermic a phase change

Which of the following lines (of latitude or longitude) would represent by 180 longitude? South Pole Equator Prime meridian North Pole International date line

63Ni decays by a first-order process via the emission of a beta particle. The 63Ni isotope has a half-life of 100. years. How long will it take for 65% of the nickel to undergo decay?