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Alenkasestr [34]
3 years ago
14

1. How do you determine how many protons are in a neutral element?

Chemistry
1 answer:
docker41 [41]3 years ago
6 0

Answer:

The number of protons in an atom is always equal to the atomic number.

Explanation:

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HELP ASAP ITS TIMED!!!
Tpy6a [65]

Answer:

C would be the right answer

5 0
3 years ago
Read 2 more answers
A weighed piece of magnesium ribbon is added to a dried crucible, which is reweighed and heated in air to form the compound MgO.
olga nikolaevna [1]

Answer:

One of the errors for low percentage of magnesium could be because not all the magnesium may have reacted.

Explanation:

During the heating process, if the magnesium have not reacted completely, it can lead to low percentage of magnesium in the oxide formed. The product may still look a bit greyish rather than whitish after the heating process.

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3 years ago
What might happen if you got too close to the center of the Milky Way galaxy?
Lady_Fox [76]

Answer:

you would be trapped in the gravitational pull of a black hole

Explanation:

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5 0
2 years ago
One mole of H atom is equal to
valentina_108 [34]
16 grams I think it might be it
6 0
3 years ago
A chemistry student must write down in her lab notebook the concentration of a solution of sodium hydroxide. The concentration o
taurus [48]

Answer:

The concentration the student should write down in her lab is 2.2 mol/L

Explanation:

Atomic mass of the elements are:

Na: 22.989 u

S: 32.065 u

O: 15.999 u

Molar mass of sodium thiosulfate, Na2S2O3 = (2*22.989 + 2*32.065 + 3*15.999) g/mol = 158.105 g/mol.

Mass of Na2S2O3 taken = (19.440 - 2.2) g = 17.240 g.

For mole(s) of Na2S2O3 = (mass taken)/(molar mass)

= (17.240 g)/(158.105 g/mol) = 0.1090 mole.

Volume of the solution = 50.29 mL = (50.29 mL)*(1 L)/(1000 mL)

= 0.05029 L.

To find the molar concentration of the sodium thiosulfate solution prepared we use the formula:

= (moles of sodium thiosulfate)/(volume of solution in L)

= (0.1090 mole)/(0.05029 L)

= 2.1674 mol/L

6 0
3 years ago
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