How is the number 3.91 x 10 - 4 expressed in regular numbers?

A. 0.3910000

B. 0.0000391

C. 0.0391

D. 0.000391

What is the volume of a gas at 756.14 Torr. If the volume was 588.56 mL at 588.56 torr.

Which of the following mixtures, with each component present at a concentration of 0.1 M, has a pH closest to 7? O A. HCIO (aq) and NaCIO (aq) O B. HNO2 (aq) and NaNO2 (aq) O C. CH3COOH (aq) and NaCH3COO (aq) O D. HNO3 (aq) and NaNO3 (aq)

Solid sodium reacts violently with water, producing heat, hydrogen gas, and sodium hydroxide. How many molecules of hydrogen gas are formed when 48.7 grams of sodium are added to water?

What color does copper produce when it reacts to chlorine

Which of these relies on a renewable resource to produce energy A - nuclear power plant B - natural gas hot water heater C - solar-powered car D - coal-burning stove

A very simple assumption for the specific heat of a crystalline solid is that each vibrational mode of the solid acts independently and is fully excited and thus cv=3NAkB=24.9 kJ / (kmol⋅K). This is called the law of Dulong and Petit.

How many elements are found in the following chemical equation? K + Cl → KCl A. 1 B. 2 C. 3 D. 0

How many liters of 0.85 M HCl solution would react completely with 3.5 moles Ca (OH) 2?

The specific heat of aluminum is 0.897 J/g•°C. Which equation would you use to calculate the amount of heat needed to raise the temperature of 0.75 g of aluminum from 7°C to 29°C? A. Q = 0.75 g x 0.897 J/g•°C x 22°C B. Q = 0.75 g x 0.

Carbon dating advisable for measuring materials ages for a few years, thousands of years, millions of years