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Romashka-Z-Leto [24]

3 years ago

7

Is mass conserved when 40 G of sodium hydroxide undergoes a chemical change during an interaction with 36.5 grams of hydrogen ch

loride?

1 answer:

Vikentia [17]3 years ago

7 0

Mass is lost when I has under gone this transformation so no, mass was not conserved.

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Are sperm and egg cells exact copies of the plant cell

vfiekz [6]

Answer:

No

Explanation:

thats scientifically impossible

5 0

3 years ago

Calculate the mass of Na

Alexus [3.1K]

Answer:

22.98977

Explanation:

Na is actually sodium and its atomic number is 11.

I'm not sure if this is multiple choice or a question where you have to answer in writing but here is the mass of Na 22.98977.

Hope this helps

3 0

2 years ago

How long would it take a current of 10A to deposit 6.36g of copper during the electrolysis of copper (ll) tetraoxosulphate VI so

zhuklara [117]

It take 0.54 hours to deposit 6.36g of copper

<h3>Further explanation</h3>

Faraday's Law I

"The mass of the substance formed at each electrode is proportional to the electric current flowing in the electrolysis

W = e.i.t / 96500

$\tt \large {\boxed {\bold {W \: = \: \dfrac {e \times i \: x \: t} {96500}}}}$

e = equivalent = Ar / valence

i = current, A

t = time, s

W=6.36 g

e = 63.5 : 2 =31.75

i = 10 A

$\tt t=\dfrac{W\times 96500}{e.i}\\\\t=\dfrac{6.36\times 96500}{31.75\times 10 }\\\\t=1933.04~s\approx 0.54~hours$

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3 years ago

Question 6 of 10

Marta_Voda [28]

Answer:

B. A chemist

<em>Hope it's help :)</em>

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3 years ago

help me on the bottom pleaseeeeeeee also please check the top BUT I NEED HELP OM THE BOTTOM TAJNKSKSKSLSLSLALS GOOODD BLESSS UUU

Yanka [14]

Because when you take the sand out it doesn't stay the same shape

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3 years ago