Answer:
b. erosion.
I believe that this is the best answer
the balanced equation is as follows
2H₂S + 3O₂ --> 2SO₂ + 2H₂O
molar ratio also known as stoichiometry is the ratio in which the reactants and products are either formed or reacted in the given equation
molar ratio can be determined by the coefficients of the compounds in the balanced reaction
coefficient is the number in front of the chemical compound
coefficients for the compounds in this reaction are as follows
H₂S - 2
O₂ - 3
SO₂ - 2
H₂O - 2
therefore correct option is
H₂S:SO₂ = 2:2 and O₂:H₂O = 3:2
What class is this? (Subject)
Answer : The correct answer is 109.
Explanation :
Significant figure : It is defined as the each digits of a number have meaning or contribute to the value of the number.
The addition of given digits is,
43.2 + 50.0 + 16.0 = 109.2
As per the question, the given digits has 3 significant figures. But the answer after addition is 109.2 has 4 significant figures.
The addition rule of significant rule is the least precise number of significant figure in any number of the problem determines the number of significant figures in the answer.
Therefore, from the addition rule, the correct answer is 109.
Answer: An amount of
heat is required to raise the temperature of 4.64kg of lead from 150°C to 219°C.
Explanation:
Given: mass of lead = 4.64 kg
Convert kg into grams as follows.



The standard value of specific heat of lead is
.
Formula used to calculate heat is as follows.

where,
q = heat energy
m = mass of substance
C = specific heat of substance
= change in temperature
Substitute the value into above formula as follows.

Thus, we can conclude that
heat is required to raise the temperature of 4.64kg of lead from 150°C to 219°C.