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maksim [4K]
3 years ago
10

PLEASE HELP I WILL MARK BRAINLIEST!!! Reactions In Our World Lab Report

Chemistry
1 answer:
Cerrena [4.2K]3 years ago
6 0

Answer:

ok

Explanation:

ok

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Consider the genetic cross for absent-mindedness, which is a dominant trait. What is the probability that the offspring of this
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D)100%

Every single one has the dominate gene so all the offspring will get it

I hope that helps!
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Tonya had a mixture of sand, salt, iron particles, and pebbles. What processes should be used to separate the substances in the
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3 years ago
Convert 100mL to L. Show your work to receive full credit.
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3 years ago
Determine the molarity of a solution prepared by dissolving 0.198 g of "KHP" (C8H5O4K) in enough water to make 125 mL of solutio
rosijanka [135]

Answer:

0.007756M KHP; 0.0009695 moles NaOH reacts; 0.03488M NaOH.

Explanation:

Potassium hydrogen phthalate, KHP, is a salt used as standard to determine concentration of basic solutions as NaOH solutions.

To find molarity of the KHP solution we need to convert mass of KHP to moles and divide this in 125mL = 0.125L:

<em>Moles KHP -Molar mass: 204.22g/mol-:</em>

0.198g * (1mol / 204.22g) = 0.0009695 moles KHP

<em>Molarity:</em>

0.0009695 moles KHP / 0.125L = 0.007756M KHP

NaOH reacts with KHP as follows:

NaOH + KHP → Na⁺ + KP⁻ + H₂O

That means 1 mole of NaOH reacts per mole of KHP, that means moles of NaOH that reacts are = Moles of KHP added:

0.0009695 moles NaOH reacts

In 27.80mL = 0.02780L the NaOH was contained. Molarity is:

0.0009695 moles NaOH / 0.02780L =

0.03488M NaOH

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