Answer:
The heat required to vaporize 102.3 grams of H₂O(l) is 231198 J.
Explanation:
The heat required to vaporize 102.3 g of H₂O(l) can be calculated as follows:
Where:
q: is the heat
ΔHv: is the heat of vaporization of water = 2260 J/g
m: is the mass = 102.3
Therefore, the heat required to vaporize 102.3 grams of H₂O(l) is 231198 J.
I hope it helps you!
The answer is option A.
That is A: They have shown how lead can build up and cause damage in the human body.
Lead had been used in plumbing and other products since ancient times. chemists showed that how lead can build up and cause damage in the human body.
Chemists have discovered lead toxicity and showed that it can cause damage in the human body since it is a toxic element.
Answer:
2.12*10^-4 moles
Explanation:
If 3.03ml contains 1.35*10^-4mol then 7.79 will contain 7.79ml*1.35*10^-4/3.03= 3.47*10^-4 moles
Amount added= (3.47-1.35)*10^-4=2.12*10^-4moles
Answer:
Statement about scientific explanations is true :
C. II, III and IV only
A two stroke engine is a type of internal combustion engine. It is called two-stroke because the entire cycle is completed in two strokes of the piston during only one crankshaft revolution. Two stroke engines have a high power to weight ratio.
The transfer tube in a two-stroke piston engine is used to transfer fuel from the B. intake port to the exhaust port.