3 years ago

What is 2 H2 + 1 O2 = 2 H2O balanced?

Chemistry

1 answer:

jeka57 [31]3 years ago

3 0

Answer:

Yes, that is correctly balanced. 2 H2 + 1 O2 = 2 H2O is already balanced.

Explanation:

If you count up the number of hydrogen atoms and oxygen atoms on each side, you will see that they are equal:

2 H2 + 1 O2 (4 hydrogen and 2 oxygen) = 2 H2O (4 hydrogen and 2 oxygen).

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Convert mass to moles for both reactants. (Round to 2 significant figures.)

shepuryov [24]

Mass = mr x moles
Mr of CuCl2 = ( 63.5) + ( 35.5 x 2) = 134.5
2.5 = 134.5 x moles
2.5 / 134.5 = moles
Moles = 0.019 (2DP)

0.25g of Al
Mr of Al = 27
0.25 = 27 x moles
0.25/ 27 = 0.0093 moles (2sf)

Hope this helps :)

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3 years ago

Read 2 more answers

Number of moles in 31.99g O2 <br> And 176.8g NaCl

sergey [27]

#O_2

$\\ \sf\longmapsto No\:of\;moles=\dfrac{Given\:mass}{Molar\:mass}$

$\\ \sf\longmapsto No\:of\:moles=\dfrac{31.99}{32}$

$\\ \sf\longmapsto No\:of\:moles\approx 1$

#NaCl

$\\ \sf\longmapsto No\:of\:moles=\dfrac{176.8}{58.5}$

$\\ \sf\longmapsto No\;of\:moles=3mol$

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2 years ago

What happens after sound waves create vibrations in the ear?

otez555 [7]

Explanation:

3 little bones in ear takes that vibration and empowers them. Then they transfer the vibrations to next part of ear.

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2. The energy of a photon that has a wavelength of 12.3 nm is _______ J.

klio [65]

I think it is e sorry if I’m wrong

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Balance the equation in acidic conditions:<br> Cu+No3- ---> Cu2+ + No

larisa86 [58]

2Cu+No3----> Cu2+3No

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