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likoan [24]
3 years ago
15

What do you know about the sun's motion based on the nebular hypothesis model?

Chemistry
2 answers:
Effectus [21]3 years ago
5 0
I think the answer is C
Ierofanga [76]3 years ago
4 0
I think the answer is C im not sure
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Two glucose molecules can combine to form a disaccharide molecule and what molecule
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A. Convert the following Fahrenheit temperatures to Celsius (you may use a calculator):
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4 0
3 years ago
Quiz due soon need help ASAP
Rom4ik [11]

Answer:

3

Explanation:

Because in product 3CuSO4 is present it means 3 SO4 sulphate ions are present

8 0
2 years ago
Which has the highest boiling point .33 m NH3 or .10 m Na2SO4​
Aleksandr-060686 [28]

Answer:

0.33 mol/kg NH₃

Explanation:

Data:

     b(NH₃) = 0.33 mol/kg

b(Na₂SO₄) = 0.10 mol/ kg

Calculations:

The formula for the boiling point elevation ΔTb is

\Delta T_{b} = iK_{b}b

i is the van’t Hoff factor — the number of moles of particles you get from a solute.

(a) For NH₃,

The ammonia is a weak electrolyte, so it exists almost entirely as molecules in solution.  

1 mol NH₃ ⟶  1 mol particles

i ≈ 1, and ib = 1 × 0.33 = 0.33 mol particles per kilogram of water

(b) For Na₂SO₄,

Na₂SO₄(aq) ⟶ 2Na⁺(aq) + 2SO₄²⁻(aq)

1 mol Na₂SO₄ ⟶ 3 mol particles

i = 1 and ib = 3 × 0.10 = 0.30 mol particles per kilogram of water

The NH₃ has more moles of particles, so it has the higher boiling point.

5 0
3 years ago
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