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tatyana61 [14]
3 years ago
11

Which of the following is a noncontact force?

Chemistry
2 answers:
MaRussiya [10]3 years ago
7 0

Answer: Gravity

Explanation:

It pushes you down but you never actually touch it

aalyn [17]3 years ago
6 0

Answer:

gravity

Explanation: its a force that pulls you down but you are never making contact with it

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You weigh out 0.1183 g of a complex salt to analyze for the percentage of cyanide ion in your complex salt. After dissolving the
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Answer:

25.35%

Explanation:

Again let me restate the the equation of the reaction;

H2O (ℓ) + 2 MnO4 - (aq) + 3 CN- (aq) → 2 MnO2 (s) + 3 CNO- (aq) + 2 OH- (aq)

Amount of potassium permanganate  reacted = 10.2/1000 * 0.08035 = 8.1957 * 10^-4 moles

If 2 moles of MnO4 - reacts with 3 moles of CN-

8.1957 * 10^-4 moles of MnO4 - reacts with 8.1957 * 10^-4 * 3/2

= 1.229 * 10^-3 moles of CN-

Mass of CN- reacted = 1.229 * 10^-3 moles of CN- * 26.02 g/mol

= 0.03 g

Hence, percentage of the cyanide = 0.03 g/0.1183 g * 100

= 25.35%

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3 years ago
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Answer:

C.

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