What is a mole and why do we use it

Which statement is true about the following molecule? The molecule is composed of four atoms. The molecule contains oxygen atoms. The molecule is water. The molecule represents an element.

You are taking a road trip and your car gets 25 miles to the gallon. It has a gas tank which holds 14 gallons of gas. If this is the case, how many times will you have to fill up the tank if your trip distance is 250 miles?

What volume does 1.954 moles of argon occupy at STP

An atom x contains 14 protons, 13 electrons, and 12 neutrons, and atom y contains 14 protons, 14 electrons, and 12 neutrons. what can you conclude? a. x and y are atoms of the same element. b. x and y are both ions. c.

Enter the net ionic equation, including the phases, for the reaction of AgNO3 (aq) with K2SO3 (aq)

NH4 + (aq) + OH - (aq) + H + (aq) + Cl - (aq) →NH4 + (aq) + Cl - (aq) + H2O (l). What is its net ionic equation?.

What is milk best described as? solution, suspension, compound, or colloid?

What is the density of the marble when the mass = 10g

What is the difference between polar and nonpolar bonds

How many grams of AgNO3 are needed to prepare a 0.25 m solution in 500 grams of water? Question 2 options: 125 g 0.125g 21.25 g 170g