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Oksanka [162]
3 years ago
12

Which of these is an appropriate instrument to measure mass?

Chemistry
1 answer:
iris [78.8K]3 years ago
8 0

Answer: Balance

Explanation:

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The answer should be Aegle marmelos
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1) Given the balance equation below. Calculate how much Na3PO4 in grams you
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Answer:

<u>136.67 g of Na3PO4 i</u>s required to create 100 gram of NaOH.

Explanation:

The balanced equation:

Na_{3}PO_{4} + 3 KOH \rightarrow 3 NaOH + K_{3}PO_{4}

1 mole Na3PO4 = 164 g/mole (Molar mass)

1 mole NaOH = 40 g/mole (Molar mass)

Now,

1 mole of Na3PO4 produce = 3 mole of NaOH

164 g/mol of Na3PO4 produce = 3(40) g/mol of NaOH

or

120 g/mol of NaOH is produced from = 164 g/mol of Na3PO4

1 g/mol of NaOH is produced from =

\frac{164}{120}

100 grams of NaOH is produced from =

\frac{164}{120}\times100 gram of Na3PO4

calculate,

= 136.67 g

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2 years ago
Name an element in the fourth period (row) of the periodic table with three 3d electrons.
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Vanadium

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3 years ago
In a chemical equation what does the downward pointing arrow signify ?​
nikitadnepr [17]

Answer:

<h3>spontaneously precipitate</h3>

An arrow pointing down (as in PbI2?) indicates that the product will spontaneously precipitate from the solution. ("Precipitate," in this sense, means the formation of a solid from the combination of two aqueous solutions.)

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91.28 g

Explanation:

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