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Nana76 [90]
3 years ago
13

HELP I NEED THE ANSWER NOW!!!

Chemistry
1 answer:
goldfiish [28.3K]3 years ago
6 0

Explanation:

i believe the pressure will increase.

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If 5 grams of hydrogen reacted with 40 games of oxygen to form water, how much of water would be formed?
GREYUIT [131]
2H₂ + O₂ = 2H₂O

n(H₂)=m(H₂)/M(H₂)
n(H₂)=5g/2.0g/mol=2.5 mol

n(O₂)=m(O₂)/M(O₂)
n(O₂)=40g/32.0g/mol=1.25 mol

H₂ : O₂ = 2 : 1

2.5 : 1.25 = 2 : 1

n(H₂O)=n(H₂)=2n(O₂)=2.5 mol

m(H₂O)=n(H₂O)M(H₂O)

m(H₂O)=2.5mol*18.0g/mol=45.0 g
3 0
3 years ago
The molarity (M) of an aqueous solution containing 29.8 g of sucrose, C12H22O11, in 120 mL of solution is:
Rama09 [41]

Answer:

0.726 mol·L⁻¹

Step-by-step explanation:

c = moles/litres

=====

Moles = 29.8 × 1/342.30

Moles = 0.087 06 mol

=====

Litres = 120 × 1/1000

Litres = 0.120 L

=====

c = 0.087 06/0.120

c = 0.725 mol·L⁻¹


5 0
3 years ago
Why is acid important for digestion
Troyanec [42]

Answer:

activating digestive enzymes, and making ingested proteins unravel so that digestive enzymes break down the long chains of amino acids

5 0
3 years ago
Read 2 more answers
4.5 tons → lbs <br> 4.5 tons equals how many pounds
maks197457 [2]

Answer:

9000 pounds

Explanation:

9000 pounds

4 0
3 years ago
Read 2 more answers
Neils Bohr believed that electrons orbited the nucleus in different energy levels, based on strong support from
kvv77 [185]

Answer:

the 3rd option for make sense,so that's out

Dalton was the pioneer behind the atomic model,but he certainly didn't believe in the nucleus or electrons,much lest electron shells.

Chadwick's discovery was the discovery of the neutron,not electron energy levels.

Niels Bohr's model was an attempt at explaining the hydrogen atom's spectrogram,followed by Erwin Schrödinger.Thus the first option is the answer

3 0
3 years ago
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