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CaHeK987 [17]
4 years ago
7

I need help on this question. Please help?

Chemistry
1 answer:
enyata [817]4 years ago
5 0

These are electron dot diagrams.

They use dots arount the symbol of an atom to represent its <em>valence electron</em>s.

You will also see them called <em>Lewis dot symbols</em> or <em>Lewis diagrams</em>.

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The Ksp of yttrium iodate, Y(IO3)3 , is 1.12×10−10 . Calculate the molar solubility, s , of this compound.
torisob [31]

Answer:

1.427x10^-3mol per L

Explanation:

Y(IO_{3} )_{3} ---- Y^{3+} +IO_{3} ^{3-}

I could use ⇌ in the math editor so I used ----

from the question each mole of Y(IO3)3 is dissolved  and this is giving us a mole of Y3+ and a mole of IO3^3-

Ksp = [Y^3+][IO3-]^3

So that,

1.12x10^-10 = [S][3S]^3

such that

1.12x10^-10 = 27S^4

the value of s is 0.001427mol per L

= 1.427x10^-3mol per L

so in conclusion

the molar solubility is therefore 1.427x10^-3mol per L

3 0
3 years ago
Express 14.80 × 12.10 × 5.05 in scientific notation with the proper significant figures.
Naya [18.7K]
9.04354 * 10^2

The “*” identifies as a multiplication sign. Hope this helps
8 0
3 years ago
Help with chemistry please !!!
Katena32 [7]

Answer:

16

Explanation:

16

6 0
3 years ago
Please help me I have to submit ​
Pie

Answer:

A FUSE is a type of conductor which protects the circuit by shorting it down when there is excess flow of current passing through it.

Explanation:

A fuse wire is made up of conducting materials such as alloy of tin and lead that has high resistivity. It has a low melting point of 200°C. It works based on the principle of heating effect of electric current. The functions of fuses include the following:

--> Fuses are made up of thin wire CONDUCTORS which interrupts or breaks the current flow of a circuit when in excess, thereby protecting the circuit from damage.

--> it prevents overload of current. In the event where too many appliances are connected to a single circuit, this can lead to overload which triggers a fuse to terminate the circuit connection.

--> It prevents total black-out: SWITCH-LIKE devices known as CIRCUIT BREAKERS share this function with the fuses. The nearest circuit breaks if any dysfunction occurs in the components of the circuit thereby preventing blackout.

4 0
3 years ago
The density of acetic acid is 1.05 g/mL. What is the volume of 327 g of acetic acid
Eva8 [605]

Answer:

311.43\ \text{mL}

Explanation:

\rho = Density of acetic acid = 1.05\ \text{g/mL}

m = Mass of acetic acid = 327\ \text{g}

V = Volume

Density is given by

\rho=\dfrac{m}{V}\\\Rightarrow V=\dfrac{m}{\rho}\\\Rightarrow V=\dfrac{327}{1.05}\\\Rightarrow V=311.43\ \text{mL}

The volume of acetic acid is 311.43\ \text{mL}.

8 0
3 years ago
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