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Hunter-Best [27]
3 years ago
11

An element has 9 protons, 10 neutrons, and 11 electrons. What is the name of the element?

Chemistry
1 answer:
Olin [163]3 years ago
3 0

Answer:

for more details are at the pic

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Which statements correctly describe the effect of distance in determining the gravitational force and the electrical force? Chec
Luda [366]

Answer:

The gravitational force is inversely proportional to the square of the distance..

The electrical force is inversely proportional to the square of the distance..

Explanation:

From the Newton's law of universal gravity, we understood that the force of attraction between the masses two objects is inversely proportional to the square of the distance apart. Mathematically, it is expressed as:

F = GM1M2/r²

Where:

M1 and M2 are the masses of two objects measured in kilograms (Kg).

G is the gravitational constant with a value of 6.67×10¯¹¹ Nm²/Kg²

r is the distance apart measured in metre (m).

F is the force of attraction measured in Newton (N).

From the equation:

F = GM1M2/r²

The force (F) is inversely proportional to the square of the distance (r) apart. This means that the greater the distance apart, the smaller the force of attraction and the smaller the distance apart, the greater the force of attraction between the masses of the object.

From Coulomb's Law, we understood that the force of attraction between two charged particles is inversely proportional to square of the distance. Mathematically, it expreessed as

F = Kq1q2/ r²

Where:

q1 and q2 are charges of two objects measured in coulomb (C) .

r is the distance apart measured in metre (m)

K is the electrostatic constant with a value of 9×10^9 Nm²/C²

F is the force measured in Newton (N).

From the equation:

F = Kq1q2/ r²

The force (F) is inversely proportional to the square of the distance (r) apart.. This implies that as the distance between the charged particles increase, the smaller the force of attraction between them and as the distance between the charged particles decrease, the greater the force of attraction between the two charged particles.

6 0
3 years ago
6. The oxidizing agent for the following reaction below is..<br>Al + Mn07 - Al(OH)2 + MnO2<br>​
prisoha [69]
Think of the acronym LEO says GER: losing electrons is oxidation, gaining electrons is reduction.
4 0
3 years ago
How many grams of sodium oxide can be produced when 55.3 g Na react with 64.3 g O2?. . Unbalanced equation: Na + O2 → Na2O. . Sh
GenaCL600 [577]
 <span>this is a limiting reagent problem. 

first, balance the equation 
4Na+ O2 ---> 2Na2O 

use both the mass of Na and mass of O2 to figure out how much possible Na2O you could make. 
start with Na and go to grams of Na2O 

55.3 gNa x (1molNa/23.0gNa) x (2 molNa2O/4 molNa) x (62.0gNa2O/1molNa2O) = 75.5 gNa2O 

do the same with O2 

64.3 gO2 x (1 molO2/32.0gO2) x (2 molNa2O/1 mol O2) x (62.0gNa2O/1molNa2O) = 249.2 g Na2O 

now you must pick the least amount of Na2O for the one that you actually get in the reaction. This is because you have to have both reacts still present for a reaction to occur. So after the Na runs out when it makes 75.5 gNa2O with O2, the reaction stops. 

So, the mass of sodium oxide is 

75.5 g</span>
3 0
3 years ago
Read 2 more answers
What is the final volume, in milliliters, when 5.80 mL of 25.0 %(m/v) NaOH solution is diluted to give a 3.50 %(m/v) NaOH soluti
Zigmanuir [339]

Answer:

41.43 mL

Explanation:

First we <u>calculate the mass of NaOH in the original solution</u>:

  • 25.0 % m/v means that in 100 mL of solution, there are 25 grams of NaOH.
  • This means that in 5.80 mL, we would have (5.80 * 25/100) <u>1.45 grams of NaOH.</u>

Then we <u>calculate the volume of the diluted solution</u>, using the grams of NaOH (that remain the same throughout the dilution process):

  • 1.45 g NaOH * \frac{100 mL}{3.50gNaOH} = 41.43 mL
7 0
3 years ago
What are the molecular formulas for phosphoric acid?
harkovskaia [24]

Answer: H₃PO₄

Explanation: the number beside h is a 3

8 0
3 years ago
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