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Sveta_85 [38]
3 years ago
6

Write the quantities 3 x 10^-4 cm and 3 x 10^4 km in ordinary notation

Chemistry
1 answer:
Goshia [24]3 years ago
6 0
To write quantities in ordinary notation, you need to notice the power of the exponent.
If the power is positive, then you move the decimal point to the right by the number the power in exponent tells you.
If the power is negative, then you move the decimal point to the left by the number the power in exponent tells you.

We have:
3 x 10^-4 : the power of exponent is negative, therefore, we will move the decimal point 4 places to the left.
3 x 10^-4 = 0.0003 km

3 x 10^4 : he power of exponent is positive, therefore, we will move the decimal point 4 places to the right.
3 x 10^4 = 30000 km
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If 6.02×1023 atoms of element Y have a mass of 28.09 g, what is the identity of Y?
Mazyrski [523]

Silicon is the element having a mass of 28.09 g

<u>Explanation</u>:

  • Silicon is the element having an atomic mass of 28.09 g / mol. So 28.09 g of silicon contains 6.023 \times 10^23 atoms. One mole of each element can produce one mole of compound.
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3 years ago
Comppare and contrast sexual reproucton and asexual repructon
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Answer:

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Explanation:

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How does evolution relate to tectonic plate movement?
Reil [10]

Answer:

Below!

Explanation:

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7 0
2 years ago
22.00 g of CO2 has a volume of 50.00 L and a pressure of 0.8210 atm. What must be the
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T = 9.875K

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I think that true!!!
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