A. How many significant figures are in 400,000?

B. How many significant figures in 0.000600?

C. How many significant figures in 21,995,000?

D. How many significant figures in 0.05050?

Calculate the number of atoms in. (a) 52 moles of He. (b) 52 g of He. (c) 52 u of He

Kilograms represented by the mass defect for oxygen-16: 2.20 * 10 - 28 kg What is the nuclear binding energy for oxygen-16?

What would the temperature of 0.734 moles of chlorine gas be at 1.83 atmospheres in a 10.2 liter container? (R = 0.0821 Latm/molk)

Choose a statement below that is TRUE. A) A solution will form between two substances if the solute-solute interactions are strong enough to overcome the solvent-solvent interactions.

Oxygen is much less soluble in water than carbon dioxide at 0.00412 g / 100 mL at 20°C and 760 mmHg. Calculate the solubility of oxygen gas in water at 20°C and a pressure of 1150 mmHg

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?