One ball rolls along a shelf at a steady rate. a second ball rolls off the shelf and gains speed as it falls in a curved path. which must have an unbalanced force acting on it?

Explain how metallic atoms become ions.

What is the first thing you notice about a person?.-_-

How many grams of water vapor (H2O) are in a 10.2 liter sample at 0.98 atmospheres and 26ÁC? Show all work used to solve this problem

a cylinder of argon gas contains 50.0 l of ar at 18.4 atm and 127 Celsuis. How many grams are in the cylinder?

Atomic number of f^-1

Lithium and nitrogen react in a combination reaction to produce lithium nitride: 6Li (s) + N2 (g) → 2Li3N (s) How many moles of lithium are needed to produce 0.60 mol of Li3N when the reaction is carried out in the presence of excess nitrogen?

7. Convert 5.2 cm of magnesium (Mg) ribbon to mm of Mg ribbon.

If you place a crystal substance on a tabletop, return to view it after some time passes, and find it as a powdered substance, which of the following processes most likely took effect? A. Efflorescence B. Distillation

What changes occur in the nuclei of atoms involved in the reactions that fuel nuclear power plants?

Calculate the molar mass for HCN. 0.2703 g/mol 2.703 g/mol 27.03 g/mol 270.3 g/mol