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kotykmax [81]
3 years ago
15

(50 POINTS AND WILL GIVE BRAINLY!) which actions will help a package of hot chocolate powder to dissolve more quickly?

Chemistry
1 answer:
musickatia [10]3 years ago
3 0

A , i think because pure water won't dissolve the powder fast.

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Electrons orbit the nucleus like planets around the sun.​<br>true or false?
gogolik [260]

Answer: true

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7 0
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What would be needed for shale to form from slate
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satela [25.4K]

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cell wall

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6 0
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Why is hydrogen a non metal, usually placed with group I element in the periodic table, even though it does not show a metallic
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3 0
3 years ago
The ksp of lead iodide is 7.1 × 10-9. a chemical engineer adds 0.0025 mol of ki to a solution of 0.00004 mol pb(no3)2 in 500 ml
inn [45]
Answer is: n<span>o, because the ion product is less than the Ksp of lead iodide. </span>

Chemical dissociation 1: KI(s) → K⁺(aq) + I⁻(aq).
Chemical dissociation 2: Pb(NO₃)₂(s) → Pb²⁺(aq) + 2NO₃⁻(aq).
Chemical reaction: Pb²⁺(aq) + 2I⁻(aq) → PbI₂(s).
Ksp(PbI₂) = 7.1·10⁻⁹.
V = 500 mL ÷ 1000 mL/L = 0.5 L.
c(KI) = c(I⁻) = 0.0025 mol ÷ 0.5 L.
c(I⁻) = 0.005 M.
c(Pb(NO₃)₂) = c(Pb²⁺) = 0.00004 mol ÷ 0.5 L.
c(Pb²⁺) = 0.00008 M.
Q = c(Pb²⁺) · c(I⁻)².
Q = 8·10⁻⁵ M · (5·10⁻³ M)².
Q = 2·10⁻⁹; <span> the ion product.</span>

8 0
3 years ago
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