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BabaBlast [244]
3 years ago
7

Determine the average atomic mass of the following mixture of isotopes of Potassium:

Chemistry
1 answer:
dexar [7]3 years ago
5 0

Answer

the first one (im pretty sure)

Explanation:

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For each ionic compound formula, identify the main group to which X belongs: (c) X2SO4.
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The answer is group 1A.

In the ionic compound formula X₂SO₄, SO₄ has a -2 charge. Hence to balance this -2 charge of SO₄, X must have a +1 charge.

Group 1A elements form X⁺ type of ions because they are metals. So, they have the tendency to lose electrons.

Hence, X must belong to the 1A group.

Ionic Compounds-

  • Ionic compounds are formed by the electrostatic attraction between the anions and the cations.
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  • And the anions are negatively charged ions that are formed due to the gain of electrons.
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To learn more about Ionic compounds, visit: brainly.com/question/9167977

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1 year ago
How do rivers affect watersheds?
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Answer:

Explanation:

the last one I read it

5 0
3 years ago
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What are the magnitude (size) and direction of the cumulative force acting on the car shown in the picture A. 30 N to the right
UNO [17]

Answer: The correct answer is option(A).

Explanation:

Total forces exerting on the car = F

F_r=50 N= Force on car exerting in right direction

F_l=20 N= Force on car exerting in left direction

F_u=2500 N= Force on car exerting in upward direction

F_d=2500 N= Force on car exerting in downward direction

F=F_r+F_l+F_u+F_d

(-F_u)=F_d (negative sign shows the direction)

Since, upward force are equal in magnitude but opposite in direction by which they will balance out each other.so, the net force car will be due to two forces F_r and F_l

F=F_r+F_l=50 N+(-20 N)=30 N(negative shows the direction)

The magnitude (size) and direction of the cumulative force acting on the car will 30 N towards right direction.Hence, correct answer is option(A).

4 0
3 years ago
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1 Aluminium is oxidised Al - 3e = Al⁺³

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3 years ago
What type of chemical bond holds NaCI, an ionic crystal, together?
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Ionic bonds hold NaCl together
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3 years ago
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