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N76 [4]
3 years ago
6

Please help me with this chem question. Only answer if you know it.

Chemistry
2 answers:
Mashcka [7]3 years ago
7 0

Answer:

solid=(s)

Explanation:

A solubility table may be something your class may want you to memorize. Where an aqueous (aq) solution is formed by a soluble compound dissolving in water, our solvent. So if we refer to this solubility table, it says phosphate (PO4) is usually insoluble, so in the reaction it won't break down in water and will stay as a solid (s). The only exceptions are group 1 alkali metals or ammonium (NH4+).

mariarad [96]3 years ago
4 0
Your answer is b because it is
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A 900.0 mLmL sample of 0.18 MHClO4MHClO4 is titrated with 0.27 MLiOHMLiOH. Determine the pHpH of the solution after the addition
lesya [120]

Answer: pH of the solution after the addition of 600.0 ml of LiOH is 7.

Explanation:

The given data is as follows.

    Volume of HClO_{4} = 900.0 ml = 0.9 L,

   Molarity of HClO_{4} = 0.18 M,

Hence, we will calculate the number of moles of HClO_{4} as follows.

       No. of moles = Molarity × Volume

                             = 0.18 M × 0.9 L

                             = 0.162 moles

Volume of NaOH = 600.0 ml = 0.6 L

Molarity of NaOH = 0.27 M

No. of moles of NaOH = Molarity × Volume

                                     = 0.27 M × 0.6 L

                                     = 0.162 moles

This shows that the number of moles of HClO_{4} is equal to the number of moles of NaOH.

Also we know that,

         HClO_{4} + NaOH \rightarrow NaClO_{4} + H_{2}O

As 1 mole of HClO_{4} reacts with 1 mole of NaOH then all the hydrogen ions and hydroxide ions will be consumed.

This means that pH = 7.

Thus, we can conclude that pH of the solution after the addition of 600.0 ml of LiOH is 7.

3 0
3 years ago
What is mass times acceleration equal to?
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Answer:

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7 0
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D.) Protons............
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Natasha_Volkova [10]

Answer:

Ok:

Explanation:

So, you can use the Henderson-Hasselbalch equation for this:

pH = pKa + log(A^-/HA) where A- is the conjugate base of the acid. In other words, A- is the deprotonated form and HA is the protonated.

We can solve that

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6 0
2 years ago
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