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fgiga [73]
2 years ago
7

An atom contains one proton , one electron, and one neutron. Which two particles are most similar in mass

Chemistry
2 answers:
ra1l [238]2 years ago
8 0

Answer:

proton and neutron

Explanation:

andrey2020 [161]2 years ago
3 0
Proton and neutron, which are both approximately 1 amu
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The energy change, ∆H, associated with the following reaction is +81 kJ. NBr3(g) + 3 H2O(g) → 3 HOBr(g) + NH3(g) What is the exp
xeze [42]

Answer:

162 kJ

Explanation:

The reaction given by the problem is:

  • NBr₃(g) + 3 H₂O(g) → 3 HOBr(g) + NH₃(g)  ∆H = +81 kJ

If we turn it around, we have:

  • 3 HOBr(g) + NH₃(g) → NBr₃(g) + 3 H₂O(g) ∆H = -81 kJ

If we think now of HOBr and NH₃ as our reactants, then now we need to find out <u>which one will be the </u><em><u>limiting reactant</u></em> when we have 9 moles of HOBr and 2 moles of NH₃:

  • When we have 1 mol NH₃, we need 3 mol HOBr. So when we have 2 moles NH₃, we need 6 moles HOBr. We have more than 6 moles HOBr so that's our <em>reactant in excess</em>, thus NH₃ is our limiting reactant.

-81 kJ is our energy change when there's one mol of NH₃ reacting, so we <u>multiply that value by two when there's two moles of NH₃ reacting</u>. The answer is 81*2 = 162 kJ.

6 0
2 years ago
Asparagine is a polar amino acid shown here at ph 7 what is the maximum
KonstantinChe [14]
Maximum number of water molcules which can take part in forming hydrogen bonding interaction with asparagine are 13. Following structure shows the interactions. Lone pair of electrons act as hydrogen bond acceptors and hydrogen atoms attached to heteroatoms acts as hydrogen bond donors.

3 0
2 years ago
Which of the following is true when 1 M KCl is diluted to semi-molar KCl?
eimsori [14]

The solution before dilution and after dilution contains same number of moles, and water is added for dilution.

Option B

<h3><u>Explanation:</u></h3>

Suppose before dilution, the solution contains x moles of KCl in Y liter of water. Now as the concentration got halved, then the solution contains x moles of KCl in 2Y kiters of solution. So the number of moles of KCl in the solution remained constant.

Again, as the solution is diluted to half of the concentration, water must have been added with the solution to make it dilute.

4 0
3 years ago
Which option correctly describes the relative charges and masses of the subatomic particles?
Alina [70]

Answer:

D

Explanation:

D Is The Answer Fella, My Head Hurt Really Bad

3 0
2 years ago
What is the manganese (IV) oxide function
viva [34]

Answer:

It is used as a catalyst.

6 0
3 years ago
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