1. Why was it necessary for Boyle to seal one end of his J-tube?

2. What would have happened if Boyle had allowed the temperature of the trapped air sample to change as he added mercury to the tube?

What phase change is endothermic

An example of an internal chemical transmitter is a (n) organhormonegland.

What is the name of the compound NiSO4 • 5H2O?

The wavelength of a wave is 0.5 meters, and its period is 2 seconds. What is the speed of this wave?

What practical use does adding salt to water have A. unfreezing glaciers B. freezing the ocean C. keeping ponds liquid D. melting ice on roads and sidewalks

Zn (s) + cu2 + (aq) →zn2 + (aq) + cu (s). part a under standard conditions, what is the maximum electrical work, in joules, that the cell can accomplish if 51.0 g of copper is plated out?

13 This word describes the circulatory system that provides nutrients and oxygen to living cells of the body.

Write the outer electron configuration for the group 15 element in the fourth period.

Describe the relationship between transmittance and the absorbance?

Are the following statements true or false? A. Two pi bonds comprise a double bond. B. Bonds formed from atomic p orbitals are always sigma bonds. C. Side-to-side overlap results in a bond with electron density above and below the bond axis. D.