Question

. A compound which is prepared from gypsum has the property of hardening when mixed
with a proper quantity of water. Identify the compound. Write the chemical equation for its
preparation. For what purpose Is it used in hospitals​

Answer 1

Answer:

New system of units is so chosen that the unit of mass equals A kg, the unit of lengths is b meter and unit of

time is c sec .How much will 5 joules measure in this new system.

Answer 2

Answer:

hope it helps

thnks for ur help...