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3 years ago

The number used to measure distances outside of our solar system is a(n)

Chemistry

1 answer:

nevsk [136]3 years ago

3 0

Answer:

Usually light years, or parsecs.

Explanation:

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topjm [15]

Answer:

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2 years ago

A chemical property is _______________.

deff fn [24]

Answer:

Explanation:

chemical bonds between atoms are formed or broken.

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3 years ago

What determines the state of a substance

frez [133]

The kinetic energies of the particles (atoms, molecules, or ions) that make up a substance or object.

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3 years ago

Read 2 more answers

) If you started with 2.3182 g of 3-nitrophthalic acid and had a 93% yield of 3-nitrophthalhydrazide, how many grams of 3-nitrop

MArishka [77]

Answer: 1.8124 g of 3-nitrophthalhydrazide were recovered.

Explanation:

The balanced chemical reaction will be :

$C_8H_5NO_6+N_2H_4\rightarrow C_8H_5N_3O_4+2H_2O$

moles of 3-nitrophthalic acid = $\frac{\text {given mass}}{\text {molar mass}}=\frac{2.3182g}{211.13g/mol}=0.0110mol$

As 1 mole of 3-nitrophthalic acid gives = 1 mole of 3-nitrophthalhydrazide

0.0110 moles of 3-nitrophthalic acid gives = $\frac{1}{1}\times 0.0110=0.0110$ mole of 3-nitrophthalhydrazide

mass of 3-nitrophthalhydrazide = $moles\times {\text {molar mass}}=0.0110mol\times 177.16g/mol=1.9488g$

As the percentage yield is 93% , the mass of 3-nitrophthalhydrazide recovered = $\frac{1.9488\times 93}{100}=1.8124g$

Therefore 1.8124 g of 3-nitrophthalhydrazide were recovered.

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3 years ago

Which of the following is a true

Katarina [22]

❤️Hello!❤️ The answer is A. Energy can change from one form to another. Hope this helps! ↪️ Autumn ↩️

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3 years ago