The energy level necessary to enable a reaction to occur is called the activation

a. True

b. False

For "moving toward," a blue ray of light moved from the star to Earth. Then a spectrum appeared in the bottom half of the screen. Which statement about the spectrum on the bottom relative to the spectrum of the stationary star is correct?

What is the volume of silver metal will weigh exactly 2500.0g. The density of silver is 10.5g/cm3 - centimeters cubed-

Can you explain and read this equation 2Mg + 02 - - 2MgO

How can the helium atoms in this model different from real helium atoms?

What do you call the curved, upper surface of water that commonly appears when using a graduated cylinder?. Describe what causes this?.

The capacity of an eye dropper would be a few a kilometers be leiters C deciliters d milliluters

2C 2 H 6 + 7O 2 * **>4CO 2 + 6H 2 O if 7.0 g of C 2 H 6 react with 18 g of O 2, how many grams of water will be produced

22 days converted into how many seconds?

How do you do percent composition in chemistry?

Which mixture has the largest particle size?