Which of the following would describe the interaction between two north poles of a magnet?

attract

repel

stay unchanged

it depends

What makes ethanol so versatile

What is the molarity of 1.5 liters of an aqueous solution that contains 52 grams of lithium fluoride, LiF, (gram-formula mass = 26 grams/mole) ? (1) 1.3 M (3) 3.0 M (2) 2.0 M (4) 0.75 M

The most abundant gas in the Earth's atmosphere is: A. hydrogen B. oxygen C. nitrogen D. carbon dioxide

What is the most current model of how the atom is constructed? 1. A donut shaped cloud of protons surrounding a dense nucleus containing electrons and neutrons 2. A loose collection of protons, neutrons and electrons all mixed up into a sphere 3.

Silicon dioxide powder dissolves in water. Is this a physical or a chemical change?

When the nonelectrolyte glucose is dissolved in water, the solution contains___.

Pure substance definition is?

What is the net ionic equation for the reaction ofFeCl3 and KOH in water?

How many total orbitals are within the 3s, 3p, and energy level?

When are tides highest? a. during the moon's first quarter phase b. when the sun, Earth, and the moon are nearly in a line c. during the moon's third quarter phase d. when the moon is at a right angle to the sun