How many moles of oxygen (O2) are required to completely react with 27.4 mol of H2?

The density of gold is 19.3g/cm3. What is the mass of 11.3 cm3 of gold?

Clouds that form near the ground and look like fluffy heaps of cotton eye called

How many protons, electrons, and neutrons are contained in gallium-69?

If a fast-moving car making a loud noise approaches and moves past the person, what will happen as the distance between the two increases which one is it? A.

The molarity (M) of a solution is equal to the: A) number of grams of solute/liter of solvent B) number of grams of solute/liter of a solution C) number of moles of solute/liter of solvent D) number of moles of solute/liter of solution

What is the law of conservation of energy? A) energy can only be destroyed B) energy will always be renewed. C) energy cannot be created of destroyed. D) energy can never change forms.

Most metals are solid at room temperature, malleable, ductile, good conductors of heat and electricity, and react in acids to produce hydrogen gas. which of the properties mentioned is a chemical property? a. are malleable b. reacts with acids c.

Silver tarnishes when it comes into contact with hydrogen sulfide in the air. physical property or chemical property

When a volcanic irruption adds new rock to existing land and forms new islands is it considered destructive?

How many neutrons are in Cesium-130 (Cs) ? 55 75 130 185