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Svetllana [295]
3 years ago
15

Ow do carbon-12 and carbon-13 differ?

Chemistry
1 answer:
Alex17521 [72]3 years ago
5 0

They have different amounts of neutrons.

Do u know why? Ok, because they are both cacbon, so they have the same amounts of protons : 6.

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The reaction of nitrogen dioxide with fluorine
andrew-mc [135]

Answer:

Rate = 0.001615 Ms-1

Explanation:

2 NO2 + F2 --> 2 NO2F

The reaction is first order with respect to NO2 and also first order with respect to F2.

The rate law is given as;

Rate = k [NO2] [ F2]

k = 1.58E-4 M-1s-1

[NO2] = 2.84 M

[F2] = 3.60 M

Rate = ?

Inserting the values into the equation, we have;

Rate = 1.58E-4 * 2.84 * 3.60

Rate = 0.001615 Ms-1

4 0
3 years ago
Over 100 Joshua Trees died this year is a type of __________________ observation.
Nikolay [14]

Answer:

Data based observation

Explanation:

Beause It is talking about how many trees have died this past year.

5 0
3 years ago
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san4es73 [151]
Gravitational potential energy is the energy stored in an object relative to its position :)
3 0
3 years ago
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an electric current causes water to be transformed into hydrogen and oxygen gasses a physical change or a chemical change
Natalija [7]
Physical change because ther is force which is the electric current
3 0
3 years ago
Calculate the percent by mass of a solution of Ca(NO3)2 that has 22.63 g dissolved in 896.92 g of water.
never [62]

Hey there!

To calculate the percent by mass of the Ca(NO₃)₂ we need to find the total mass first by adding.

896.92 + 22.63 = 919.55

In total, the solution is 919.55 grams.

To find the percent of Ca(NO₃)₂ in the solution, divide the mass of Ca(NO₃)₂ by the total mass and multiply by 100.

22.63 ÷ 919.55 = 0.0246

0.0246 x 100 = 2.46

Ca(NO₃)₂ makes up 2.46% of the solution.

Hope this helps!

6 0
4 years ago
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