How many mol molecule oxygen are 3 mol oxygen atoms

Which is an example of a heterogeneous mixture? A coffee B soil C gelatin D air

Magnesium reacts with hydrochloric acid, HCl, to form magnesium chloride and hydrogen gas. The reaction is: Mg + 2HCl → MgCl2 + H2 What is the mass of HCl that would be required to completely react with 5.2 grams of Mg?

How do you know if a substance is polar or no polar

What mass of carbon is present in 1.4*x10^20 molecules of sucrose?

What is the total magnification with two lenses when one lens has a magnification or 15, and the other lens has a magnification of 30?

A 4.5-liter sample of a gas has 0.80 mole of the gas. If 0.35 mole of the gas is added, what is the final volume of the gas? Temperature and pressure remain constant. 3.9 liters 5.3 liters 6.3 liters 6.5 liters

What is the unit used to measure the atomic mass?

Which metal in Period 5 is very reactive and has two valence electrons in each atom? rubidium (RD) strontium (SI) zirconium (Z1) silver (Ag)

Sara and Sam went for a two-hour drive. According to the graph, between. 75 hours and 1.25 hours into their trip, they A) slowed down to a speed of 15km/hour. B) travelled at a constant rate of 30km/hour.

Define the following terms: acids, bases, oxoacids, oxoanions, and hydrates.