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adoni [48]
3 years ago
8

Picture shown!

Chemistry
1 answer:
mina [271]3 years ago
7 0

Answer:

17.86g/ml[d]

Explanation:

155.4g/8.70=d

d=17.86g/ml

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Predict the boiling point of water at a pressure of 1.5 atm.
Lina20 [59]

Answer:

100.8 °C

Explanation:

The Clausius-clapeyron equation is:

ln\frac{P_{1} }{P_{2}} =-Δ\frac{H_{vap}}{r} (\frac{1}{T_{2}}-\frac{1}{T_{1}}  )

Where 'ΔHvap' is the enthalpy of vaporization; 'R' is the molar gas constant (8.314 j/mol); 'T1' is the temperature at the pressure 'P1' and 'T2' is the temperature at the pressure 'P2'

Isolating for T2 gives:

T_{2}=(\frac{1}{T_{1}} -\frac{Rln\frac{P_{2}}{P_{1}} }{Delta H_{vap}}

(sorry for 'deltaHvap' I can not input symbols into equations)

thus T2=100.8 °C

7 0
3 years ago
How many miligrams are in 75 nanogram?​
Naddik [55]

Answer:

7.5e-5 that's the answer

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3 years ago
How to balance Na + FeBr3 →
Lubov Fominskaja [6]

Hey there!

Na + FeBr₂ → NaBr + Fe

Firstly, balance Br.

Two on the left, one on the right. Add a coefficient of 2 in front of NaBr.

Na + FeBr₂ → 2NaBr + Fe  

Next, balance Na.

One on the left, two on the right. Add a coefficient of 2 in front of Na.

2Na + FeBr₂ → 2NaBr + Fe

Lastly, balance Fe.

One on the left, one on the right. Already balanced.

Our final balanced equation:

2Na + FeBr₂ → 2NaBr + Fe

Hope this helps!

8 0
3 years ago
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