It takes Sam 0.5 hour to drive to school. His route is 32 km long. What is Sam's average speed?

This is the chemical formula for nickel tetracarbonyl (a powerfully poisonous liquid used in nickel refining) : Ni (CO) _4 A Chemical engineer has determined by measurements that there are 3.134 moles of nickel in a sample of nickel tetracarbonyl.

Colloidal particles will eventually settle out true or false

Sylvanite is a mineral that contains 28.0% gold by mass. How much sylvanite would you need to dig up to obtain 73.0 g of gold?

A plant uses the energy from sunlight to create oxygen and glucose from carbon dioxide and water. Which statement is true about the changes that have occurred? A chemical change has occurred because energy was needed.

Question 1 Heat is the measure of thermal energy that flows from one object to another driven by a difference in temperature. Question 1 options: True False Question 2 Temperature is related to the average kinetic energy of the molecules.

When is alpha particle emission most likely to occur? A. When the nucleus has more than 83 protons. B. When the ratio of neutrons to protons in the nucleus is too high to be stable. C. When the nucleus has a mass of more than 83 amu. D.

What object is being acted on by balanced forces? A. A snowflake that falls and lands on a roof B. A skateboard that rolls increasingly faster down a hill C. A baseball that rolls to a stop in a field D.

The density of an object has the equation. If an object has a mass of 85 g and a volume of 92 cm3, what is its density?

Compute 214.056 + 9.3456. Round the answer appropriately

How ocean waves affect the shape of the land on our planet