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Alika [10]
2 years ago
12

You are planning to prepare 600 mL of 20% dextrose solution, by mixing your 5% and 50% dextrose solution. How much of each solut

ion will be needed?
Chemistry
1 answer:
PilotLPTM [1.2K]2 years ago
3 0
Hdjdjejejeuuwuwjwjwjwwjwhwhwhehehehehehdhdhdhdhdhdh
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Adding a few drops of a strong acid to water will lower the pH appreciably. However, adding the same number of drops to a buffer
timurjin [86]

Answer:

Buffers are resistant to high pH changes.

Explanation:

This perfectly explains the reason why we use buffers. Buffers are substances which consist of a weak acid and its conjugate base. Buffers are resistant to significant pH changes upon addition of strong acids or bases. To illustrate this, let's say we have a buffer consisting of 0.1 mol of HF, a weak acid, and 0.1 mol of NaF (fluoride is a conjugate base of HF).

  • Let's say we add some strong acid, in a general form, this acid would be represented as H_3O^+. In this case, conjugate base will react and neutralize it to produce some amount of HF: H_3O^+ (aq) + F^- (aq)\rightarrow HF (aq) + H_2O (l).
  • Similarly, if we add some strong base OH^-, the acidic component will react with it to produce some amount of conjugate base: HF (aq) + OH^- (aq)\rightarrow F^- (aq) + H_2O (l). The ratio of HF to NaF in this case is held around the same value for addition of small amounts of strong acids/bases, so pH is kept almost constant, while in neutral water, pH would drastically increase or decrease.
5 0
2 years ago
The _________________ are either elements or compounds which are present prior to a chemical reaction.
mr Goodwill [35]
Reactants would be the missing word in the sentence because they make up the products in a chemical reaction
3 0
2 years ago
Read 2 more answers
How many grams of calcium chloride are needed to produce 1.50 g of potassium chloride? cacl2(aq) + k2co3(aq) → 2 kcl(aq) + caco3
Virty [35]
CaCl2(aq) + K2CO3(aq) → 2 KCl(aq) + CaCO3(aq)

1.12 g
2.23 g
0.896 g
4.47 g
1.12 g

Hope it helps :)
8 0
2 years ago
Read 2 more answers
What elements of paint can help forensic scientists compare samples to each other?
saul85 [17]
It would have to be paints consists of pigments,solvents, and binders. Once the [paint has been applied and has dried, the pigments are still able to determine the matched samples.
4 0
2 years ago
What do a banana and a human have in common?
Dmitry [639]

Answer:

DNA between a human and a banana is 41 percent similar.

Explanation:

3 0
2 years ago
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