Answer:
60 J
Explanation:
The law of conservation of energy states that energy is neither created nor destroyed, just converted into different forms. This means the total mechanical energy of the object at point A will be the same as the total mechanical energy at point B, and the question tells us the total of that mechanical energy is 150 J. Note we are assuming no energy is lost from the system as heat.
At point B, if the potential energy is 90 J, the remainder of the 150 J total must be kinetic energy. KE = 150 J - 90 J = 60 J.
Answer:
I think cold front if not than its c
Answer:
Sulphur + oxygen gives ➙ Sulphur oxide
Explanation:
Sulfur oxide is a compound that consists of sulfur and oxygen molecules. I hope this helps!
Physical change is described as the change that affects the form of a chemical compound but not its chemical composition. It involves the change in physical properties.
When a solid is dissolved in the liquid the solid gets dissolved in the liquid there is no breakage in the bonds and same composition of the compounds are at the end of the change. When a solution changes colour due to the addition of an other substance the bonds are broken or formed between molecules or atoms. The substance with a certain set of properties is turned into different substance with different properties. Hence it is a chemical change.
Two liquids producing heat when mixed together results in the temperature change. The heat is produced due to the increase in the temperature. Hence it is a chemical change.
When two solutions are combined gas is released due to the temperature change. This is also a chemical change
Therefore the answer is A.
The molar mass of cholesterol = 386.654 g/mol = 387 g/mole
3.2 mg cholesterol x 1 g/1000 mg x 1 mole/387 g x 6.02x1023 molecules/mole = 5.0x1018 molecules.
