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olya-2409 [2.1K]
4 years ago
9

Can someone help me with this ASAP please thank you

Chemistry
1 answer:
kodGreya [7K]4 years ago
4 0
It should be A for number 36
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What is the concentration in mass percent of a solution prepared from 50.0g nacl and 150.0g of water?
otez555 [7]
M(NaCl)=50.0 g
m(H₂O)=150.0 g

m(solution)=m(NaCl)+m(H₂O)

w(NaCl)=100m(NaCl)/m(solution)=100m(NaCl)/{m(NaCl)+m(H₂O)}

w(NaCl)=100*50.0/(50.0+150.0)=25%
3 0
4 years ago
A block of wood has a volume of 55 cm3 and a mass of 550 g. What would be its density? Answer in units of g/cm3.
VLD [36.1K]

given,

volume (V)=55cm3

mass(m)=550g

now density=m/v

=550/55

=10 g/ cm3

8 0
4 years ago
Which part of the mantle is still a solid but flows like a thick, heavy liquid?
marusya05 [52]

Hello!

Your answer is A, asthenosphere

<u>The asthenosphere is a part of the mantle</u>. It helps move the plates in the Earth.

It is <u>below the lithosphere,</u> between <u>80 and 200 km</u> below the surface.

Therfore, the asthenosphere is <u>the part of the mantle that is still a solid but flows like a thick, heavy liquid.</u>

<u />

Hope this helps!

Have a great day!

3 0
4 years ago
Read 2 more answers
How can one determine that a redox reaction will be nonspontaneous?
fenix001 [56]

Answer:

A redox reaction is spontaneous if the standard electrode potential for the redox reaction, Eo(redox reaction), is positive. ...

If Eo(redox reaction) is positive, the reaction will proceed in the forward direction (spontaneous)

Explanation:

thank me later

8 0
3 years ago
1. How many miles are in 1,000,000 centimeters
Julli [10]
There are 6.21371192 miles in 1mil cm
5 0
3 years ago
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