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Marta_Voda [28]
2 years ago
14

HELP MEE PLEASEE Marco put a pot of water on to boil eggs. After a few minutes, all the water was gone. This is an example of wh

at? ​
Chemistry
2 answers:
djverab [1.8K]2 years ago
3 0

Answer:

Evaporation

Explanation:

The water evaporated when heat was added causing the water to go.

sergejj [24]2 years ago
3 0

Answer:

When water is heated the molecules move faster and since they vibrate the evaporate.

Explanation:

sciense :)

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Ammonia , NH3, equation stocihiometric balance
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<h2>2 moles of NH³ </h2>

<h2>MARK ME BRAINLIST</h2>
5 0
3 years ago
mass of 6.584 g. After it is heated, it has a mass of 4.194 g. What is the percentage by mass of water in the hydrate?
Bad White [126]
M₁=6.584 g
m₂=4,194 g

m(H₂O)=m₁-m₂

w(H₂O)=m(H₂O)/m₁

w(H₂O)=(m₁-m₂)/m₁

w(H₂O)=(6.584-4.194)/6.584=0.3630  (36.30%)

the percentage by mass of water in the hydrate 36.30

8 0
3 years ago
Can you Guys please help me on 14,and 15
jok3333 [9.3K]
14. is a and i think 15. is b
7 0
3 years ago
Read 2 more answers
Andrew walks through his garden and observes that the shapes of dewdrops are not always the same. Suppose he wants to investigat
Allisa [31]

Answer: A, C, E

Explanation: PLATO. all testable questions.

6 0
3 years ago
Q2.  0.254 g of KHP (204 g/mol) titrated against 20.0 mL of unknown NaOH (40.0 g/mol) solution to get the end point of phenolpht
Vera_Pavlovna [14]

Answer:

<u>Mass concentration (g/L) </u><u><em>= 2.49g/L.</em></u>

Explanation:

No. of moles = \frac{mass}{molar mass}

= \frac{0.254}{204} = 0.001245 moles

Concentration of KHP (C1) in litres = n/v

= \frac{0.001245}{0.02} = 0.062 mol/L

We know that:

C_{1} V_{1} = C_{2} V_{2}

where c1v1 and c2v2 are the products of concentration and volumes of KHP and NaOH respectively.

Since mole ratio is 1 : 1.

1 mole of NaOH - 40g

0.001245 mole of NaOH = 40 × 0.001245 = 0.0498g

⇒0.0498g of NaOH was used during the titration

<u><em>∴Mass concentration (g/L) = 0.0498g ÷ 0.02L</em></u>

<u><em>= 2.49g/L.</em></u>

3 0
3 years ago
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