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german
3 years ago
8

When you turn off lights in empty rooms, what are you practising?

Chemistry
1 answer:
DedPeter [7]3 years ago
3 0
Energy conservation #needmorecontextclues
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If you are measuring something with a graduated cylinder, what are you measuring?
JulijaS [17]
With a graduated cylinder, you are most likely measuring mL (milliliters) or volume of a liquid, or the mass of a liquid.
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4 years ago
How many grams of H2 will react with 350 g of N2?
miss Akunina [59]

Answer:

10.80

Explanation:

As per the equation, let us calculate the mole ratio. N2+3H2→2NH3. As per the equation one mole of nitrogen  reacts with 1 mol of hydrogen.

In terms of mass. 28.01 g of nitrogen needs 3 mol of hydrogen or 6.048 g of hydrogen.

We can set up the ratio;

28.01 g of

l

N

2

needs  

6.048 g of

l

H

2

1 g of

l

N

2

needs  

6.048

28.01

g  of

l

H

2

50.0 g of

l

N

2

needs  

6.048

×

50.0

28.01

l

g of

l

H

2

=

10.80 g of

l

H

2

6 0
3 years ago
Which element has 12 protons 12 neutrons and 12 electrons
brilliants [131]

Answer:

Magnesium

Explanation:

Magnesium is a chemical element with the symbol Mg and atomic number 12. It is a shiny gray solid which bears a close physical resemblance to the other five elements in the second column of the periodic table: all group 2 elements have the same electron configuration in the outer electron shell and a similar crystal structure.

3 0
3 years ago
Na + H2 → NaCl balanced equation
hodyreva [135]

Answer:

..............

........

.............

6 0
2 years ago
Read 2 more answers
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