b. chemical equilibrium
c. reversible reaction
d. none of the above
Answer:
1.A
2.FALSE
3.C
100%
Answer:
it would be OA that is negatively charged
Explanation:
Number of moles is defined as mass divided by molar mass of the substance or atom.
Mathematically, No. of moles =
It is known that molar mass of is 119.058 g/mol and number of moles is given as 2.25 mol.
Therefore, calculate mass of as follows.
No. of moles =
2.25 mol =
mass = 267.88 g
Thus, we can conclude that mass of 2.25 moles of manganese(lv) sulfide(MnS2) is 267.88 g.
The mass of 2.25 moles of Manganese (V) Sulfide (MnS2) can be calculated by multiplying the molar mass of MnS2 (119.08 g/mol) by the number of moles (2.25). The result is approximately 267.93 grams.
The question asks about the mass of 2.25 moles of manganese (V) Sulfide (MnS2). We can calculate this using the molar mass of MnS2. The molar mass of manganese (Mn) is approximately 54.94 g/mol, and the molar mass of Sulfur (S) is approximately 32.07 g/mol. To find the molar mass of MnS2 we add up the molar mass of Mn and twice the molar mass of S (because we have 2 S atoms). Therefore the molar mass of MnS2 = 54.94 + 2*(32.07) = 119.08 g/mol. To find the mass in grams, we multiply this molar mass by the number of moles. Hence, the mass of 2.25 moles of MnS2 = 2.25 * 119.08 = 267.93 grams.
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b. False
Answer:The given statement is true.
Explanation:
Isomers are defined as two or more compounds with same structural formula but different arrangement of atom and chemical properties.
For example: Butane, 2-methyl propane are isomers with structural formula , acetone and propanal both isomers to each other with same structural formula of .
Answer:
28 grams
Explanation:
Molar mass of Nitrogen = 14 u
Mass = Mole * Molar Mass
= 2 * 14
= 28 g