Answer:
The answer to your question is letter B. conservation of mass
Explanation:
A.molecular changes I think there is no molecular changes law so this option is discarded.
B.conservation of mass This law states that the number of products is equal to the amount of reactants so if chemical equations are balanced, they satisfied this law.
C.conservation of energy This law states that the total energy in an isolated system remains constant and is different from the chemical equations so this option is discarded.
D.products and reactants are elements of a chemical reaction but they are not a law, so this option is discarded.
Answer:
be cool
Explanation:
there has to be a little math done in order to get ir
Answer:
Hot material near Earth's surface is more dense and sinks, and when it cools, it becomes less dense and rises.
Explanation:
Convection is a process by which less dense material rises and more dense material sinks near Earth's surface. Water, air, rocks and other materials expands when temperature rises and they become less dense. When the water is heated it becomes vapors and carries away thermal energy from the water.
Answer:
2450000 gram
Explanation:
v= m × ρ= 1 cubic meter × 2.45 gram/cubic centimeter= 1000000 cubic centimeter × 2.45 gram/cubic centimeter= 2450000 gram