How many molecules are present in a sample of oxygen gas with a mass of 3.2 grams

A rubber balloon has 1.5 liters of air at 298 K the balloon is then placed in the refrigerator over night in the morning the volume of the balloon is found to be 1.4 liters.

An element is identified as either a ... ?

What is the mass in grams of 19.26 mL of acetone? The density of acetone is 0.7857g/cm^3

What role does potassium iodide play in the generation of oxygen?

What is the [OH-] in a solution with a pol of 7.86?

What is 0.002353 to two significant figures

10. Is the identity of an element determined by its mass number or atomic number? By omak

Nitric acid, hno3, dissociates in water to form nitrate ions and hydronium ions. what change in hybridization of the nitrogen atom occurs in this dissociation

Which is classified as a salt ammonia or sodium chloride?

How many grams of CrSO3 are in 2.4 moles of CrSO3