To solve this question, we first need to know the mass of one mole of mercury. This can be done by checking the periodic table.
From the periodic table, we can see that:
molar mass of mercury = 200.59 grams/mole.
From the measurements, the chemist found that the participated amount of mercury is 0.02 moles.
We can simply determine the mass of 0.02 moles by doing cross multiplication as follows:
mass of 0.02 moles = (0.02 x 200.59) / 1 = 4.0118 grams
Rounding the answer to 2 significant digits, we get:
mass of 0.02 moles = 4.01 grams
Answer:
Accelerate, Have Constant velocity, Velocity, and First
Explanation:
Got it right on edge. have a wonderful day!!!
Answer : The 
for the reaction is, 54.89 KJ
Solution : Given,
Mass of ZnS = 48.7 g
Molar mass of ZnS = 97.474 g/mole
First we have to calculate the moles of ZnS.
The balanced combustion reaction is,
From the given reaction, we conclude that
As, 2 moles of ZnS gives energy = 220 KJ
So, 0.499 moles of ZnS gives energy = 
Therefore, the for the reaction is, 54.89 KJ
Forward reaction is a reaction in which products are produced from reactants and it goes from left to right in a reversible reaction.
For example, if the focus is on respiration, the forward reaction is written as
C6H12O6 + 6O2 ---> 6CO2 + 6H2O
If the focus is on photosynthesis, the forward reaction is written as
6CO2 + 6H2O ---> C6H12O6 + 6O2
The answer is: dinitrogen triphosphide. This is because Tri means 3 and there are 3 phosphates, Di= 2 and there are 2 nitrogen’s.
