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NISA [10]
4 years ago
7

A proton is fired toward a lead nucleus from very far away. How much initial kinetic energy does the proton need to reach a turn

ing point 10 fm from the nucleus?
Chemistry
1 answer:
Olegator [25]4 years ago
6 0

Answer:

The electric force is conservative.

Since

ΔK = −ΔU,

Kf − Ki =Ui −Uf.

We have,

Kf = 0

Ui = 0.

Thus Ki =Uf.

<u>so ,at 10 fm Uf = (2×10)−12 J.</u>

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Ammonium phosphate NH43PO4 is an important ingredient in many solid fertilizers. It can be made by reacting aqueous phosphoric a
Nataly_w [17]

Answer:

0.050 mol

Explanation:

The reaction that takes place is:

  • H₃PO₄ + 3NH₃ → (NH₄)₃PO₄

Then we convert 0.050 moles of phosphoric acid into moles of ammonium phosphate, using the stoichiometric coefficients of the reaction:

  • 0.050 mol H₃PO₄ * \frac{1mol(NH_4)_3PO_4}{1molH_3PO_4} = 0.050 mol (NH₄)₃PO₄

Thus, the complete reaction of 0.050 moles of phosphoric acid would produce 0.050 moles of ammonium phosphate.

5 0
3 years ago
How many liters of hydrogen gas are needed to react completely with 50.0 L of chlorine gas at STP ?
dolphi86 [110]

Answer:

50L of H2

Explanation:

First let us generate a balanced equation for the reaction

Cl2 + H2 —> 2HCl

From the equation above,

1L of Cl2 required 1L of H2 for complete reaction.

Therefore, 50L of Cl2 will also require 50L of H2 for complete reaction.

4 0
3 years ago
In an experiment, two unknown compounds (one an alcohol and the other an ether) of equal molecular mass were dissolved in water.
-BARSIC- [3]

Answer: B. It is an ether because it is unable to to form a hydrogen bond, so it is less soluble than water

Explanation: Alcohols (ROH) are more soluble in water as they can form hydrogen bonding with water whereas ethers (ROR) are less soluble as they do not form hydrogen bonds with water.

For formation of hydrogen bond, the electronegative atom (F, Oand N) must be attached to hydrogen and in ethers (ROR), there is no hydrogen directly attached to electronegative oxygen atom, thus are less soluble in water.


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3 years ago
Is 4Na2CO3 a mixture why or why not?
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Answer:

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1 year ago
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