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vekshin1
3 years ago
6

How do you balance Na + MgF{2} Na + Mg?

Chemistry
1 answer:
cricket20 [7]3 years ago
6 0
2Na+MGF2=2NAF+MG
I hope that's right :)
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How does the energy of an electron close to the nucleus compare to the energy of electrons farther away from the nucleus?
S_A_V [24]
The electrons closer to the nucleus would have more energy than the electrons farther away from the nucleus.
6 0
3 years ago
Read 2 more answers
100.0 g of 4.0°C water is heated until its temperature is 37.0°C. If the specific heat of water is 4.184 J/g°C, calculate the am
Lady bird [3.3K]

Answer:

13.8072 kj

Explanation:

Given data:

Mass of water = 100.0 g

Initial temperature = 4.0 °C

Final temperature = 37.0°C

Specific heat capacity = 4.184 j/g.°C

Heat absorbed = ?

Solution:

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = 37.0°C -  4.0 °C

ΔT = 33.0°C

Q = 100.0 g ×4.184 j/g.°C × 33.0°C

Q = 13807.2 j

Joule to KJ:

13807.2 j  × 1kj  /1000 j

13.8072 kj

5 0
3 years ago
25.0 mL of an HBr solution were titrated with 29.15 mL of a 0.205 M LiOH solution to reach the equivalence point. What is the mo
trapecia [35]

The molarity of HBr solution is 0.239 M

calculation

write the equation for reaction

that is LiOH +HBr → LiBr +H20

find the moles of LiOH used

moles =molarity x volume

=0.205 x 29.15 = 5.976 moles

by use of mole ratio between LiOH :HBr which is 1:1 the moles of HBr is therefore= 5.976 moles

Molarity of HCL= moles /volume

= 5.976/25 = 0.239 M

7 0
3 years ago
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kobusy [5.1K]

Answer:

The answer would be cation

Explanation:

4 0
3 years ago
Read 2 more answers
During reduction, which of the following is true? A. Electrons are gained, so the oxidation number increases. B. Electrons are g
Pani-rosa [81]

Answer:

B. Electrons are gained, so the oxidation number decreases.

Explanation:

Reduction is the <em>gain of electrons</em>.

Oxidation number is the charge that an atom <em>appears</em> to have when we count its electrons in a specific way.

Electrons have a negative charge so, if an atom gains electrons, its charge (oxidation number) becomes more negative. The oxidation number decreases.

If electrons are given off, the atom is being oxidized. Loss of electrons is <em>oxidation</em>.

6 0
3 years ago
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