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Ipatiy [6.2K]
3 years ago
14

In an experiment Nyla collected the following information about a solution made from a certain food:

Chemistry
1 answer:
lorasvet [3.4K]3 years ago
4 0

Answer:

D

Explanation:

pH<7

so it must be acid

easy ;)

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Practically: Add 1.66 ml of my 0.3M lemonade to a 15 ml microcentrifuge tube. Add 3.33 ml of your diluent (water, in this case)
Sedbober [7]

Answer:

We would need 10 mL of the concentrated CaCl₂ stock solution, and 30 mL of water.

Explanation:

To solve the question asked we can use the C₁V₁=C₂V₂ equation, where:

  • C₁ = 200 mM
  • V₁ = ?
  • C₂ = 50 mM
  • V₂ = 40 mL

We <u>solve for V₁</u>:

  • V₁ = 10 mL

We would need 10 mL of the concentrated CaCl₂ stock solution, and (40-10) 30 mL of water.

4 0
3 years ago
Predict whether a precipitation reaction will occur when aqueous solutions of pbcl2 and (nh4)2s
Nutka1998 [239]
Answer : YES, The precipitation reaction will occur.

Explanation : When we mix the aqueous solutions of Lead chloride and Ammonium sulfide a reaction will occur which is stated below :

PbCl_{2} +(NH_{4}) _{2} S ----\ \textgreater \  PbS + 2[ (NH_{4})Cl]

The major product that is formed is Lead sulfate which is black in colour.

Once the reaction is complete one can observe a black precipitate getting obtained. 
5 0
3 years ago
Which refers to the rate of change in velocity?
jek_recluse [69]

Answer:

Acceleration

Explanation:

Acceleration Is the rate change in velocity

5 0
3 years ago
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Ymorist [56]
Mutualism- both organisms benefit
Commensalism- one organism benefits while the other neither is harmed or helped
Parasitism- one organism is benefited while the other is harmed

4 P (flea benefits but dog is harmed)
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8 M (both are helped)
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4 0
3 years ago
When does phenolphthalein turn pink?
Setler79 [48]
Phenolphthalein turn pink in basic solutions.it turn colourless in acid solution.
Hence options(1)is correct
3 0
3 years ago
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