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oksian1 [2.3K]
2 years ago
13

Respond if you got a min to help me with my problem​

Chemistry
2 answers:
Rufina [12.5K]2 years ago
6 0

Answer:

I mean i dont know......

Explanation:

grandymaker [24]2 years ago
3 0

Answer:

I mean i got my own problems

Explanation:

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The ph of a solution prepared by mixing 45.0 ml of 0.183 m koh and 35.0 ml of 0.145 m hcl is ________.
Naddika [18.5K]

Answer:

12.6.

Explanation:

  • We should calculate the no. of millimoles of KOH and HCl:

no. of millimoles of KOH = (MV)KOH = (0.183 M)(45.0 mL) = 8.235 mmol.

no. of millimoles of HCl = (MV)HCl = (0.145 M)(35.0 mL) = 5.075 mmol.

  • It is clear that the no. of millimoles of KOH is higher than that of HCl:

So,

[OH⁻] = [(no. of millimoles of KOH) - (no. of millimoles of HCl)] / (V total) = (8.235 mmol - 5.075 mmol) / (80.0 mL) = 0.395 M.

∵ pOH = -log[OH⁻]

∴ pOH = -log(0.395 M) = 1.4.

∵ pH + pOH = 14.

∴ pH = 14 - pOH = 14 - 1.4 = 12.6.

4 0
3 years ago
Which of the following is the most likeley example of an favorable mutation
Lana71 [14]
A mutation that gives a rabbit a third ear
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3 years ago
Fill in the chart to identify three parts of Dalton's model of the atom.
mamaluj [8]

The first part of Dalton's model is that all matter is made of atoms, and these atoms are indivisible.

The second part of this model is that atoms of an element have identical masses and identical propertes.

At last, the third part of Dalton's model is that all compounds are formed by two or more different type of atoms combined.

6 0
11 months ago
Please help actual answer
Fed [463]

Answer:

Explanation:

E.92

Hay are you single how old are you want to be my gf

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I need the equation C14H3O+o2 balanced
earnstyle [38]

Answer:

C14H3O + O2 = CO2 + H2O.

Explanation:

3 0
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