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vampirchik [111]
3 years ago
15

Solve then following conversion problems:

Chemistry
1 answer:
nirvana33 [79]3 years ago
3 0

Answer:

The first one is: 1602.68

The second one is: 72.8

The third one is: 2.11764705882

Hope this helps!

Sometimes the instructions say to round to the nearest hundreth, thousandth, or whole number. Make sure to check that before you enter any of these!!

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A solution was made by dissolving 5.10 mg of hemoglobin in water to give a final volume of 1.00 ml. the osmotic pressure of this
Assoli18 [71]

The molecular weight of hemoglobin can be calculated using osmotic pressure

Osmotic pressure is a colligative property and it depends on molarity as

πV = nRT

where

π = osmotic pressure

V = volume = 1mL = 0.001 L

n = moles

R = gas constant = 0.0821 L atm / mol K

T = temperature = 25°C = 25 + 273 K = 298 K

Putting values we will get value of moles

moles=\frac{\pi V}{RT}=\frac{0.00195X0.001}{0.0821X298}mol

we know that

moles=\frac{mass}{molarmass}

Therefore

molarmass=\frac{mass}{moles}=\frac{5.10X10^{-3}g}{7.97X10^{-8}}=6.399X10^{4}g

5 0
3 years ago
BRANILEST IF RIGHT <br><br> WAVE A OR B
Serhud [2]
I think it’s A but I’m not sure.
3 0
3 years ago
Read 2 more answers
Two or more assistance
Goryan [66]
I believe it would be a compound.
4 0
3 years ago
Answer the question below pls
Veseljchak [2.6K]

Answer:

The answer would be at 120°C

6 0
3 years ago
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What is the mass of 3.20x10^23 formula units of iron (III) oxide (Fe2O3)?
yaroslaw [1]

The mass of iron (III) oxide (Fe2O3) : 85.12 g

<h3>Further explanation</h3>

Given

3.20x10²³ formula units

Required

The mass

Solution

1 mole = 6.02.10²³ particles  

Can be formulated :

N = n x No

N = number of particles

n = mol

No = 6.02.10²³ = Avogadro's number

mol of Fe₂O₃ :

\tt n=\dfrac{3.2.10^{23}}{6.02.10^{23}}=0.532

mass of Fe₂O₃ (MW=160 g/mol)

\tt mass=mol\times MW=0.532\times 160=85.12~g

4 0
3 years ago
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