3 years ago

38 POINTS - PEER COUNSELING 2 QUESTION

Chemistry

2 answers:

brilliants [131]3 years ago

7 0

anything except for a and d

Hoochie [10]3 years ago

6 0

C) You confronting her about the problem at hand.

C) Amanda, why do you say mean things about me?

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How many moles are in 5.96g of MgCO,?

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Answer:

201.1046

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Complete the formula. density = _____ weight/volume weight/length mass/length mass/volume

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vesna_86 [32]

There is one electron

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Calcium bromide has a formula of CaBr2. Why are there two

tamaranim1 [39]

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2 years ago

What is the solubility of La(IO₃)₃ in a solution that contains 0.100 M IO₃⁻ ions? (Ksp of La(IO₃)₃ is 7.5 × 10⁻¹²)

love history [14]

Solution and Explanation:

[La3+] = 0.1 M

At the equilibrium:

La(IO3)3 <----> La3+ + 3 IO3-

0.1 +s 3s

$\mathrm{Ksp}=[\mathrm{La} 3+][\mathrm{IO} 3-]^{\wedge} 3$

$7.5 * 10^{\wedge}-12=(0.1+s) *(3 s)^{\wedge} 3$

Since Ksp is small, s can be ignored as compared to the 0.1

The above shown expression thus becomes:

$7.5 * 10 \wedge-12=(0.1) *(3 s) \wedge 3$

$7.5 * 10^{\wedge}-12=0.1 * 27(\mathrm{s})^{\wedge} 3$

$s=1.406 * 10^{\wedge}-4 \mathrm{M}$

Answer: 1.4*10^-4 M

3 0

3 years ago