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katrin [286]
3 years ago
9

In a reaction between calcium hydroxide, Ca(OH)2, and lithium sulfide, Li2S, which of the

Chemistry
1 answer:
wolverine [178]3 years ago
6 0

Answer:

CaS calcium sulfide

Explanation:

hydroxides are insoluble except with group 1 like the lithium,

sulfides are insoluble in water and with calcium either

so CaS is insoluble

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Licemer1 [7]
English ? i can’t understand
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2 years ago
State what would be observed when the following pairs of reagents are mixed in a test tube.
Mandarinka [93]

Answer:

(i). C6H2COOH and Na2CO3(aq)

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(ii) CH3CH2CH2OH and KMnO4 /H

observation: <u>The</u><u> </u><u>orange</u><u> </u><u>solution</u><u> </u><u>turns</u><u> </u><u>green</u><u>.</u>

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(iii) CH3CH2OH and CH3COOH + conc. H2SO4

observation: <u>A</u><u> </u><u>sweet</u><u> </u><u>fruity</u><u> </u><u>smell</u><u> </u><u>is</u><u> </u><u>formed</u><u>.</u>

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4 0
3 years ago
What is the correct ionic charge for a barium atom
AVprozaik [17]
+2

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3 0
3 years ago
Convert 100 m/s into miles per hour. 100 m/s =
faust18 [17]

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6 0
3 years ago
A comic book villain is holding you at gun point and is making you drink a sample of acid he gives you a beaker with 100 ml of a
miss Akunina [59]

Answer:

b. 10 mL

Explanation:

First we <u>calculate the amount of H⁺ moles in the acid</u>:

  • pH = -log [H⁺]
  • [H⁺] = 10^{-pH}
  • [H⁺] = 10⁻⁵ = 1x10⁻⁵M

100 mL ⇒ 100 / 1000 = 0.100 L

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In order to have a neutral solution we would need the same amount of OH⁻ moles.

We can use the pOH value of the strong base:

  • pOH = 14 - pH
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Then we <u>calculate the molar concentration of the OH⁻ species in the basic solution</u>:

  • pOH = -log [OH⁻]
  • [OH⁻] = 10^{-pOH} = 1x10⁻⁴ M

If we use 10 mL of the basic solution the number of OH⁻ would be:

10 mL ⇒ 10 / 1000 = 0.010 L

  • 1x10⁻⁴ M * 0.010 L = 1x10⁻⁶ mol OH⁻

It would be equal to the moles of H⁺ so the answer is b.

7 0
3 years ago
Read 2 more answers
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