Which pure substance is made of only one kind of atom?

A. An element

B. Am electron

C. A particle

D. A proton

Which order is correct in listing the bond lengths from shortest to longest? A. single, double, triple B. triple, double, single C. single, triple, double, D. double, triple, single

The concentration of hydroxide ions in a given aqueous solution is 10-5 mole per liter at 25°C. What is the concentration of hydrogen ions in this solution in mol/L? Express your answer in scientific notation.

Express the quantity 24.2*10-5 m in mm. express your answer using three significant figures.

Calculate the number of CC atoms in 0.183 molmol of CC. Express the number of atoms of carbon numerically.

Which of the following is a decomposing reaction

Water is A. Acidic B. Basic C. Neutral

What variables affect the acceleration of an object and in what manner do they affect the acceleration?

How do valence electrons relate to the chemical reactions of an element?

What is the weighted-average mass of all known isotopes for an element

What is the Celsius equivalent of 212°f