How many moles of bonds are there in 0.25 moles of formaldehyde

Is saliva breaking a down a piece of bread chemical or physical

A cylinder of diameter 100 mm rolls from restdown a 5 m long ramp and its center of mass is moving with velocity 2 m/s at the bottom of the ramp. (a) What is its (constant) acceleration down the ramp? (b) What is its angular acceleration?

Rays of light moving upward through water toward the water-air boundary at angles larger than 488 to the nor - mal are totally reflected. No rays larger than 488 refract outside.

A copper sphere was moving at 25 m/s when it hit another object. This caused all of the KE to be converted into thermal energy for the copper sphere.

Sharon throws a 0.20 Kg with an acceleration of 10 m/s/s. (a) What force did she exert on the ball? (b) What force did the ball exert on her?

Which of the following atoms do not usually form bonds

The red LED consists of a white LED covered with a red filter. What does the red filter do?

What is the net force acting on a 10 kg freely falling object?

A comet is a A. meteoroid that travels through Earth's atmosphere and hits the surface. B. meteoroid that burns up in Earth's atmosphere, producing a streak of light. C.

Can Someone explain the steps for this? A lovesick lad wants to throw a bag of candy and love notes into the open window of his girlfriend's bedroom above. Assuming it just reaches the window, he throws the love gifts at 16.