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sergejj [24]
3 years ago
8

For the reaction BaSO3 (s) ↔ BaO (s) + SO2 (g), the equilibrium constant is 0.345 M. What is the concentration of SO2 at equilib

rium? A. 0.035 M B. 0.070 M C. 0.280 M D. 0.420 M E. None of the Above
Chemistry
1 answer:
ohaa [14]3 years ago
3 0
E. Also the equilibrium constant should not have units.
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A chemist requires 0.912 mol Na2CO3 for a reaction. How many grams does this correspond to?
mina [271]
0.912 mol Na2CO3 × 105.9888g Na2CO3/ 1 mol Na2CO3 = 96.66 grams
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3 years ago
Suppose that 13g of a nonelectrolyte is dissolved in 0.50 kg of benzene. The
sp2606 [1]

Answer:

128.98 g/Mol

Explanation:

ΔTb = Kb * m * i

Where;

ΔTb = boiling point elevation

Kb = boiling point constant

m = molality of the solution

i = Van't Hoff factor

Hence;

Where molality = number of moles of solute/mass of solvent in Kg

Number of moles of solute = mass/Molar mass

So;

80.61 - 80.10 = 2.53 * 13g/M/0.5 * 1

Where M is the molar mass of the solute

0.51 = 2.53 * 13g/M/0.5

0.51 = 2.53 * 13/M * 1/0.5

0.51 = 32.89/M * 1/0.5

0.51 * 0.5 = 32.89/M

0.255 M = 32.89

M = 32.89/0.255

M= 128.98 g/Mol

6 0
3 years ago
What is a decomposer? What role do they play in an ecosystem?
Law Incorporation [45]
Decomposers play a critical role in the flow of energy through an ecosystem. They break apart dead organisms into simpler inorganic materials, making nutrients available to primary producers.
6 0
3 years ago
Determine the mass in grams of each of the following:
lukranit [14]

Answer:

A) 9.60 g

B) 19.2 g

C) 28.8 g

Explanation:

A) Elemental oxygen mass is 16.00 g/mol, so in 0.600 mol of elementar oxygen there is 9.60 g

0.600 mol x 16.00 g/mol=9.60 g

B) Oxygen molecular mass is 32.00 g/mol, so in 0.600 mol of oxygen molecules there is 19.2 g

0.600 mol x 32.00 g/mol=19.2 g

C) Ozone molecular mass is 48.00 g/mol, so in 0.600 mol of oxygen molecules there is 28.8 g

0.600 mol x 48.00 g/mol=28.8 g

7 0
3 years ago
Why do you think it is important that biologists have a good understanding of chemistry?
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Well you see Chemistry a lot when you talk about cellular activity and processes. Cells take in compounds of elements on the smallest scale to keep the cell running. This way a biologist knows what exactly is going on in the cell to keep it alive.

4 0
3 years ago
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