How long does it take for the earth to rotate A. 24hrs
B. 1 yr
C. 2 weeks
D. 5 months​

Achemical reaction is done in the setup shown, resulting in a change of mass. what will happen if the same reaction is done in a sealed container that is placed on the electronic balance?

The plant food contains nh4)3po4 what tests would you run to verify the presence of the nh4 ion and the po4 ion

How can a mixture of salt water be separated into salt and water