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
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Answer:
Logs in a fire is an example of something burning, also changing its state of form. I think thats chemical change; going from wood to ashes. And charged batteries means they haven't been used yet or they were just charged, resulting in physical change.
Explanation:
I just learned this in science.
I hope this helps!
Answer:
The total applied force on the trolley is 5 N toward the North.
Explanation:
In this problem, Ben is pushing the trolley to north and Gary is pushing it to south. So both the forces are acting 180° opposite to each other. As force is a vector quantity, the net force or total force acting on any object should be calculated by vector addition of number of forces along with their directions. So in this case, if we consider the force Ben is applying as F1 and the force Gary is applying as F2 on the trolley. Then the net or total force acting on the trolley will be 
. This is because, F1 and F2 are acting opposite to each other in direction.Thus, 
.
So the total force acting on the trolley is 5 N and it is toward the north direction.
Answer:
C. Their properties change completely.
Explanation:
The electron configurations of the elements show a periodic variation with increasing atomic number. Consequently, there are also periodic variations in physical and chemical behavior.
When atoms interact to form a chemical bond, they combine in order to <u>achieve a more stable electron configuration.</u> As a consequence, the compounds formed exhibit completely different properties.
For example, when solid magnesium burns in air, it forms both magnesium oxide and magnesium nitride, which are gases.
