3
H
1
Upper left of chemical symbol= mass number
Lower left= atomic number
Answer:C it’s gravitational potential
Explanation:I took the test
Answer:
B) water and salt is the result of neutralization reaction
Answer:

Explanation:
When heat is supplied to a substance, the temperature of the substance increases according to:

where
Q is the amount of heat supplied
m is the mass of the substance
C is the specific heat capacity of the substance
is the initial temperature
is the final temperature
For the sample of magnesium in this problem, we have:
m = 63 g is the mass
Q = 6689 J is the hear supplied
C = 1.023 J/gC is the specific heat capacity
is the final temperature
Solving the formula for
, we find the final temperature:

Answer:
7.3 mole
Explanation:
1 C6H10S gives 10H
0.73 mole of C6H10S gives X mole of Hydrogen
X= 0.73×10=7.3mole