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allochka39001 [22]
3 years ago
15

Law of Conservation of Mass in terms of atoms

Chemistry
1 answer:
VARVARA [1.3K]3 years ago
4 0

No atoms are lost or made during the chemical reaction so the total mass of the products is equal to the total mass of the reactants. In an atom, protons and neutrons contribute to the mass and since the number of them doesn’t change, the mass doesn’t either.

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. Where exactly in our solar system is this water found?
zlopas [31]

Answer: Earth, though the dwarf planet Pluto does have ice on it.

5 0
3 years ago
Use the reaction N2(g) + 3H2(g) 2NH3(g) to answer the following questions
Veronika [31]

Answer:

K

C

=

[N

2

][H

2

]

3

[NH

3

]

2

N

2

+3H

2

⇌2NH

3

=

(1.5×10

−2

)(3×10

−2

)

3

(1.2×10

−2

)

2

=

1.5×10

−2

×27×10

−6

1.44×10

−4

=

40.5×10

−4

1.44

=0.035×10

4

5 0
3 years ago
What type of wave do the contractions of the snake muscles make as the snake moves forward
S_A_V [24]
Actually, there are four kinds of reptile motion: 

Concertina - vermiform. Circular muscles around the snake squeeze the front of the snake's body out long, then the latter half is pulled forward. 

Rectilinear crawling - Belly scutes are moved forward individually in a wave-like motion. 

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Lateral undulation - Most common form of movement. Snake presses on alternating pressure points to force body forward (or backward)

(taken from a user on Yahoo from Correct Answers)
3 0
3 years ago
Given: 4Na + O2 → 2Na2O In this chemical reaction, how many moles of Na2O will be produced if 2.90 moles of Na react completely?
crimeas [40]

Since we already have the balanced equation, we know that the ratio between Na:Na_{2}O is 4:2 respectively.

So then we can set up a proportion to find the number of moles produced when 2.90 moles of Na react completely:

\frac{4mol_{Na}}{2mol_{Na_{2}O}} =\frac{2.90mol_{Na}}{xmol_{Na_{2}O}}

Then we cross multiply and solve for x:

4x=5.8

x=1.45

Therefore, we know that when 2.90 moles of Na react completely, there are 1.45 moles of Na_{2}O that are produced.

3 0
3 years ago
Example of oxidizing agents include
Ivahew [28]

Explanation:

Substances generally tends to specialize as either oxidizing or reducing agents.

An oxidizing agent is an electron acceptor which causes a co-reactant to be oxidized in a reaction.

Examples are:

   Non-metals especially oxygen and the halogens.

Other examples are H₂SO₄ , HNO₃, KMnO₄, K₂Cr₂O₇

learn more:

Oxidizing and reducing agents brainly.com/question/5558762''

#learnwithBrainly

4 0
3 years ago
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