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Gnoma [55]
2 years ago
13

PLEASE HELP ME ASAP!!!!

Chemistry
1 answer:
VashaNatasha [74]2 years ago
4 0

Answer:

16.   CsCl  =  Cs¹⁺ and Cl⁻¹

17.  CaF₂  =  Ca²⁺ and F⁻¹

18.   FeO  =  Fe²⁺ and O⁻²

19. Al₂O₃  =  Al³⁺ and O⁻²

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Please help me, Thank you!
babymother [125]

Answer:

amount of charge

Explanation:

Oxygen and sulfur are both in Group 16, which means they have a -2 charge. They have two more electrons than protons, making the charge of the ion negative.

Hope that helps.

4 0
3 years ago
Read 2 more answers
Antifreeze is mixed with water in a car's cooling system because the solution what?
Nikolay [14]
Antifreeze is an additive in water-based liquid to lower down the freezing point of such liquid. It is used to make use of the colligative properties of solutions specifically freezing-point depression for cold climate and boiling-point elevation to allow higher coolant temperature.
8 0
3 years ago
When an atom loses one or more electrons, it becomes?
Ghella [55]
It becomes "ion".  anion  or  cation.
7 0
3 years ago
What is the Ka of a weak acid (HA) if the initial concentration of weak acid is 4.5 x 10-4 M and the pH is 6.87? (pick one)
rewona [7]

Answer:

Ka = 4.04 \times 10^{-11}

Explanation:

Initial concentration of weak acid = 4.5 \times 10^{-4}\ M

pH = 6.87

pH = -log[H^+]

[H^+]=10^{-pH}

[H^+]=10^{-6.87}=1.35 \times 10^{-7}\ M

HA dissociated as:

HA \leftrightharpoons H^+ + A^{-}

(0.00045 - x)    x     x

[HA] at equilibrium = (0.00045 - x) M

x = 1.35 \times 10^{-7}\ M

Ka = \frac{[H^+][A^{-}]}{[HA]}

Ka = \frac{(1.35 \times 10^{-7})^2}{0.00045 - 0.000000135}

0.000000135 <<< 0.00045

Therefore, Ka = \frac{(1.35 \times 10^{-7})^2}{0.00045 } = 4.04 \times 10^{-11}

5 0
3 years ago
What are two fungal skin infections that humans can contract?
Natali5045456 [20]
Ringworm and jock itch
5 0
3 years ago
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