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MrMuchimi
3 years ago
13

99 Points Pls help

Chemistry
2 answers:
matrenka [14]3 years ago
6 0

For Anyone that put A, its wrong, the correct answer is D

labwork [276]3 years ago
3 0

the eqn is 2KCl + Pb(NO3)2 --> 2KNO3 + PbCl2

first chemical is KCl: K is potassium, Cl is chloride.

so that leaves choice C and D

only 1 molecule of Pb(NO3)2 so correct ans is D

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Explain why an indicator is used in titration
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Answer:

Titrations. Because a noticeable pH change occurs near the equivalence point of acid-base titrations, an indicator can be used to signal the end of a titration. When selecting an indicator for acid-base titrations, choose an indicator whose pH range falls within the pH change of the reaction.

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Match each term with its definition.
padilas [110]

Answer:

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4 0
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I just needed the points. Have a nice day luv!!!!!!!!!

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How many grams of KCl is needed to make .75 L of a 1 M solution of KCl?
Zielflug [23.3K]

Answer:

The answer to your question is 25.9 g of KCl

Explanation:

Data

Grams of KCl = ?

Volume = 0.75 l

Molarity = 1 M

Formula

Molarity = \frac{number of moles}{volume}

Solve for number of moles

Number of moles = Molarity x volume

Substitution

Number of moles = 1 x 0.75

Simplification

Number of moles = 0.75 moles

Molecular mass KCl = 39 + 35.5 = 34.5

Use proportions to find the grams of KCl

                          34.5 g of KCl ----------------  1 mol

                             x                  ----------------  0.75 moles

                            x = (0.75 x 34.5) / 1

                            x = 25.9 g of KCl

3 0
3 years ago
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