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avanturin [10]
3 years ago
14

If an element has an atomic number of 12 how many protons does each atom have?

Chemistry
1 answer:
DanielleElmas [232]3 years ago
3 0
12
The atomic number is equal to the number of protons in the nucleus
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The solvent in a solution evaporates out over time, leaving behind the solute.
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When a solution is heated, the solvent evaporates, leaving behind the dissolved solids as residue. When a solution containing dissolved solutes is heated, the solvent will evaporate.

Explanation:

. P.S. Evaporation to dryness cannot be use for solutions like sugar solution because the sugar will decompose upon heating.

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What is the concentration of a sodium hydroxide solution if 14.5 mL of it are exactly neutralized by 30.0 mL of a 0.500 M hydroc
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1.03 M

Explanation:

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NaOH + HCl ⇒ NaCl + H₂O

Step 2: Calculate the reacting moles of HCl

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Step 3: Calculate the moles of NaOH that react with 0.0150 moles of HCl

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Step 4: Calculate the molar concentration of NaOH

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3 years ago
Give the quantum number set for one electron in the 3p sub level of a sulfur (S)
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Answer:- Atomic number for sulfur is 16 and it's electron configuration is 1s^2 2s^2 2p^6 3s^2 3p^4. Here, there are total for electrons in 3p and the set of quantum numbers for these 4 electrons would be as..

For the first electron of 3p-

n = 3, l = 1, ml = -1 and ms = +(1/2)

for the second electron of 3p-

n = 3, l = 1, ml = 0 and ms = +(1/2)

for the third electron of 3p-

n = 3, l = 1, ml = +1 and ms = +(1/2)

and for the fourth electron of 3p-

n = 3, l = 1, ml = -1 and ms = -(1/2)

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4 years ago
Which of the followings are true 1,3-BPG? A. It regulates Hb B. It contains a high-energy bond C. It contains two ester bonds D.
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Answer:

D. It contains a phosphate with higher phosphoryl transfer potential than ATP

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