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fiasKO [112]
3 years ago
5

Please help if you can.

Chemistry
1 answer:
Contact [7]3 years ago
5 0

Answer:

can you help me and I will give you the awnser just give me brainlest

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tensa zangetsu [6.8K]

Answer:

D po ayan po ang sagot ko salamat po

6 0
3 years ago
What is the mole fraction of NaOH in an aqueous solution that
astraxan [27]

Answer:

The mole fraction of NaOH in an aqueous solution that contain 22.9% NaOH by mass=0.882

Explanation:

We are given that

Aqueous solution that contains 22.9% NaOH by mass means

22.9 g NaOH in 100 g solution.

Mass of NaOH(WB)=22.9 g

Mass of water =100-22.9=77.1

Na=23

O=16

H=1.01

Molar mass of NaOH(MB)=23+16+1.01=40.01

Number of moles =\frac{Given\;mass}{Molar\;mass}

Using the formula

Number of moles of  NaOH(n_B)=\frac{W_B}{M_B}=\frac{22.9}{40.01}

n_B=0.572moles

Molar mass of water=16+2(1.01)=18.02g

Number of moles of water(n_A)=\frac{77.1}{18.02}

n_A=4.279 moles

Now, mole fraction of NaOH

=\frac{n_B}{n_B+n_A}

=\frac{4.279}{0.572+4.279}

=0.882

Hence, the mole fraction of NaOH in an aqueous solution that contain 22.9% NaOH by mass=0.882

4 0
3 years ago
Write iupac name of :
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A)Nitrogen (IV) oxide

B)propane

4 0
3 years ago
True or false all countries are legally bound to survey and monitor for disease within their bodies
ra1l [238]

Answer:

False..........

7 0
3 years ago
What kind of fossils can tell scientists what dinosaurs ate
Sunny_sXe [5.5K]
Coplorites I believe.

Hope this helps!

:)


5 0
3 years ago
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