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katovenus [111]
3 years ago
7

Help ASAP I will mark brainliest to he correct answer

Chemistry
1 answer:
irga5000 [103]3 years ago
8 0

Answer:

513.3 km/h

Explanation:

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Seasons occur because Earth is tilted on its axis relative to the orbital plane, the invisible, flat disc where most objects in the solar system orbit the sun. ... In June, when the Northern Hemisphere is tilted toward the sun, the sun's rays hit it for a greater part of the day than in winter.

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Suppose you have an Avogadro's number of nitrogen atoms. How many grams does this represent? Enter your answer to one decimal pl
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2.3 x 10-23 g.

Explanation:

The mass of a single atom is the mass number, 14, is the mass in grams of one mole of carbon.

One mole of Nitrogen atom is 6.022 x 1023 atoms (Avogadro's number). This can then used to convert a nitogen atom to grams by the ratio:

mass of 1 atom / 1 atom = mass of a mole of atoms / 6.022 x 10^23 atoms.

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mass of 1 N atom = 2.325 x 10^-23 g

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What is the mass percent of potassium sulfate in solution if 78g of potassium sulfate is dissolved in 500 mL of water? (The dens
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13.5 %

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Then we <u>calculate the mass percent of potassium sulfate</u>, using the formula:

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