When 80 g of sodium hydroxide, naoh, are dissolved in enough water to make 500 ml of solution, the molarity of the solution is?

Given the following chemical equation, if 162.0 grams of potassium reacts with excess oxygen gas and was found to produce 172 grams of potassium oxide, what is the percent yield for this reaction?4 K (s) + O2 (g) - - > 2K2O (s) 44% 75% 22% 88%

Calculate the equilibrium constant for each of the reactions at 25 ∘C. 2Fe3 + (aq) + 3Sn (s) →2Fe (s) + 3Sn2 + (aq)

What is the largest subatomic particle

What are the products of the alkali metals in a reaction with: oxygen, water, halogen?

Which phase transition of the 3 states of matter gains heat energy?

A certain ore is 37.3% nickel by mass how many kilograms of this ore would you need to dig up to have 10.0g of nickel

What would be the change in pressure in a sealed 10.0 L vessel due to the formation of N2 gas when the ammonium nitrite in 1.00 L of 0.500 M NH4NO2 decomposes at 25.0°C?

Read the given equation. Na2O2 + CO2 → Na2CO3 + O2 What volume of O2 gas is produced from 2.80 liters of CO2 at STP?

Drinking water may contain a low concentration of lead ion (Pb2) due to corrosion of old lead pipes. The EPA has determined that the maximum safe level of lead ion in water is 15 ppb.

A student examines the temperature and precipitation on a given day using a thermometer and a rain gauge. The student is measuring- A. temperature only B. climate only C. wind speed only D. specific weather conditions