What is the mass of 2.25 moles of manganese(lv) sulfide(MnS2)
Answers
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.
Final answer:
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.
Explanation:
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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c. deliquescent
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Answers
Let us understand all the terms
Hydration : this is the addition of water to anything. It can be addition of water to double or triple bond, absorption of water by a substance. so it cannot be loss of water.
Deliquescent : it is the absorption of water by a substance and getting dissolved in it. Like NaOH is a deliquescent substance.
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Thus the answer is
effloresce : where a substance loses water.
Answers
To solve, the following molar masses are to be known.
CuSO4.5H2O (hydrate) - 249.7g/mole
CuSO4 (anhydrous) -159.6g/mole
Also there molar ratio of the hydrate and CuSO4 is 1.
the mass of the hydrate is to be divided by the molar mass of the hydrate then multiplied by the ratio (1) to get the moles of hydrate and multiplied by the molar mass of the anhydrous to get the mass in grams.
moles = (100g/249.7)*1 = 0.4 moles hydrate
grams = 0.4*159.6 = 64.9 grames hydrate
Answers
Answer is "0.05 mol".
Explanation;
We can do calculation by using a simple formula as
n = m/M
Where, n is the number of moles of the substance (mol), m is the mass of the substance (g) and M is the molar mass of the substance (g/mol).
Here,
n = ?
m = 2.80 g
M = 56.08 g/mol
By substitution,
n = 2.80 g /56.08 g/mol
n = 0.0499 mol ≈ 0.05 mol
Answers
Answer:
Option A is correct.
A.The potential energy in the system is greatest at X.
Explanation:
A ball resting at the top of a hill will have greatest potential energy because when an object is at rest it tend to have greatest potential energy. When It moves from position X to Y the potential energy of the ball will decrease and its kinetic energy will increase.
Answer choices are listed below.
A.The potential energy in the system is greatest at X.
B.The kinetic energy in the system is greatest at X.C.Total energy in the system decreases as the ball moves from X to Y.
D.Total energy in the system increases as the ball moves from X to Y.
Answers