A mixture consists of sand, salt, and iron filings. Which of the following instruments or materials would NOT be useful in separating this mixture?

a. magnet

b. filter paper

c. screen

d. water

Write a balanced equation for the complete oxidation reaction that occurs when ethanol (c2h5oh) burns in air.

What is the velocity of a first-order reaction when the reactant concentration is 6 x 10-2M and the rate constant is 8 x 103sec-1? A) 1.33 x 105M-1•sec-1 B) 1.33 x 105M•sec C) 7.5 x 10-2M•sec D) 4.

Which equation represents a fission reaction? Superscript 14 subscript 7 upper N plus superscript 1 subscript 1 upper H right arrow superscript 15 subscript 8 upper O.

What causes the earths crust to spread

In which layers would a solid cube with 6 cm sides and a mass of 270 g float? explain

Give the formula of the chlorine ion

Why can different numbers of metal and nonmetal atoms create ionic bonds together?

What feature do atoms in a noble gas and atoms in a molecule have in common?

Water is a polar molecule and attracts other polar molecules. Which of the following is a consequence of this property? Water is considered to be a universal solvent. Water can only dissolve a limited amount of solute.

What are the first ten elements of the periodic table?