Answer:
98.08 g/mol
Explanation:
In order to find the molar mass of a substance, you add together the mass of the total number of moles of each element in the substance.
H2SO4 contains:
2 mol H (1.01 g/mol)
1 mol S (32.06 g/mol)
4 mol O (16.00 g/mol)
2(1.01) + 32.06 + 4(16.00) = 98.09 g/mol
Para encontrar la masa molar de una sustancia, suma la masa del número total de moles de cada elemento de la sustancia.
H2SO4 contiene:
2 mol H (1.01 g/mol)
1 mol S (32.06 g/mol)
4 mol O (16.00 g/mol)
2(1.01) + 32.06 + 4(16.00) = 98.09 g/mol
Answer:
27.9 g
Explanation:
CsF + XeF₆ → CsXeF₇
First we <u>convert 73.1 g of cesium xenon heptafluoride (CsXeF₇) into moles</u>, using its<em> molar mass</em>:
- Molar mass of CsXeF₇ = 397.193 g/mol
- 73.1 g CsXeF₇ ÷ 397.193 g/mol = 0.184 mol CsXeF₇
As <em>1 mol of cesium fluoride (CsF) produces 1 mol of CsXeF₇</em>, in order to produce 0.184 moles of CsXeF₇ we would need 0.184 moles of CsF.
Now we <u>convert 0.184 moles of CsF to moles</u>, using the <em>molar mass of CsF</em>:
- Molar mass of CsF = 151.9 g/mol
- 0.184 mol * 151.9 g/mol = 27.9 g
Because they are the means by which energy needed for photosynthesis is transported into the plant in form of light ernegy
Decreasing the activation energy needed for the reaction.
Answer:
H2 and O2
Explanation:
A coffee cup calorimeter is basically a type of calorimeter that operates at constant pressure. The heat measured in the calorimeter is equal to the change in enthalpy of the reaction.
This type of calorimeter is apt for reactions involving solutions where there is little or no change in volume.
It is not generally applicable to gas phase reactions such as the reaction between H2 and O2.