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noname [10]
3 years ago
8

HURRY !!!!!! How did kelper describe the planets Orbits ?

Chemistry
1 answer:
Andrei [34K]3 years ago
8 0
Kepler's Laws of Planetary Motion. While Copernicus rightly observed that the planets revolve around the Sun, it was Kepler who correctly defined their orbits.

Sorry about the holds, copied it from google...
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How many grams of magnesium oxide are needed to produce 264g of magnesium hydroxide
Archy [21]
If its one part magnesium and two parts hydroxide id say 88g of magnesium
3 0
3 years ago
How does the oceanic crust compare to continental crust?
dimulka [17.4K]

I think the answer is number (4)

5 0
2 years ago
What is it called when moon is between setting and rising
miv72 [106K]

Answer:

I hope this link helps you.

Explanation:

http://astronomy.swin.edu.au/cosmos/P/Phases

4 0
3 years ago
How many moles of NO2 form when<br> 63.25 g N2O5 decompose?<br> 2N2O5→ 4NO2 + 0₂
GREYUIT [131]

Answer:

1.1713 moles

Explanation:

RFM of N2O5= (14*2)+(16*4)=108

Moles of N2O5= Mass/RFM= 63.25/108= 0.5856 moles

Mole ratio of N2O5:NO2 = 2:4

Therefore moles of NO2= 4/2*0.5856= 1.1713 moles

7 0
1 year ago
What is the mass percent of potassium sulfate in solution if 78g of potassium sulfate is dissolved in 500 mL of water? (The dens
Debora [2.8K]

Answer:

13.5 %

Explanation:

First we<u> calculate the mass of 500 mL of water</u>, using <em>its density</em>:

  • Volume * Density = Mass
  • 500 mL * 1.00 g/mL = 500 g

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

Mass of Potassium Sulfate / Total Mass * 100%

  • 78 g / (78 + 500) g * 100 % = 13.5 %

6 0
2 years ago
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