Question

please ans this worksheet ​

Answer 1

Answer:

Q.1. ->ans.-Otto von Guericke invented vacuum pump. The purpose for this experiment was to demonstrate the force of the air pressure dramatically.

Q.2.->ans. The horses were unable to separate both hemispheres because of air pressure.

Q.3.->ans. (i) No

(ii)No

Q.B.

Q.1.ans-> Conservation of mass.

Q.2.->ans. Yes, but most of the poor people or the people living in villages will suffer many problems because they will not be able to cook food, heat water..etc.

Q.3.->ans.Yes, Carbon dioxide in the atmosphere is also because it captures heat radiated from Earth's surface.

Q.4.->ans. mass of reaction is always equal than the mass of the products.