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Sati [7]
3 years ago
12

kepler's first law explains that the sun is the focus of our solar system, and that _____. the orbit of a planet around the sun

is an ellipse the speeds of the sun, moon, and stars are perfectly uniform and unchanging the orbits of the sun, moon, and stars are perfect circles the moon is not in orbit around the sun
Chemistry
2 answers:
alexgriva [62]3 years ago
5 0
Kepler's first law explains that the sun is the focus of our solar system, and that A. <span>the orbit of a planet around the sun is an ellipse. Kepler proved that the orbit of the sun is an elliptical path and is used to derive the motion of the satellites and space vehicles today.</span>
kaheart [24]3 years ago
4 0

The correct answer is A) the orbit of a planet around the sun is an ellipse the speeds of the sun.

Kepler's first law explains that the sun is the focus of our solar system and that the orbit of a planet around the sun is an ellipse the speeds of the sun.

The three laws of Kepler are the following. The Law of Orbits: all planets move in an elliptical orbit, with the sun at one focus.

The Law of Areas: a line that connects a planet to the sun sweeps out equal areas in equal times.

The Law of Periods: the square of the period of a planet is proportional to the cube of the semimajor axis of its orbits.

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The volume of water in a graduated cylinder should be read _________________ the meniscus.
enyata [817]
D.
The volume of water in a graduated cylinder 
should be read at the bottom of the curve of the meniscus. 
6 0
3 years ago
Read 2 more answers
What is the mass, in grams, of 1.26 mol of water, H2O?
Masteriza [31]

Answer:

The mass of 1.26 mole of water, H₂O, is 22.68 grams

Explanation:

Molar mass is the amount of mass that a substance contains in one mole. In other words, the molar mass of an atom or a molecule is the mass of one mole of that particle and its unit is g/mole.

In this case, being:

  • H: 1 g/mole
  • O: 16 g/mole

the molar mass of water H₂O is:

H₂O= 2*1 g/mole + 16 g/mole= 18 g/mole

Then you can apply the following rule of three: if 18 grams are present in 1 mole of H2O, how much mass is present in 1.26 moles of water?

mass=\frac{1.26 moles*18 grams}{1 mole}

mass= 22.68 grams

<u><em>The mass of 1.26 mole of water, H₂O, is 22.68 grams</em></u>

8 0
4 years ago
The density of water is 1.00 g/mL. If your swimming pool holds 208,000 gallons of water, what is the weight of the water in a fi
Natasha2012 [34]

Answer:

12.455≈12.5 tons

Explanation:

1 US gallon of water (gal) = 8.35 pounds of water (lb wt.)

so we divide 208,000 by 8.35 to covert to pounds

then divide the pounds by 2000 to convert to tons.

8 0
3 years ago
Kendrick sees a display of rock samples at a museum. The information included in the display is as follows:
Leto [7]

Answer:

Different types

Explanation:

Because it's in a different place

3 0
3 years ago
A chemist adds of a sodium thiosulfate solution to a reaction flask. Calculate the mass in grams of sodium thiosulfate the chemi
schepotkina [342]

This is a incomplete question.The complete question is:

A chemist adds 180.0 ml of a 1.77 mol/L of sodium thiosulfate solution to a reaction flask. Calculate the mass in grams of sodium thiosulfate the chemist has added to the flask. Be sure your answer has the correct number of significant digits.

Answer: 50.4 g

Explanation:

To calculate the number of moles for given molarity, we use the equation:

\text{Moles of solute}={\text{Molarity of the solution}}\times{\text{Volume of solution (in L)}}     .....(1)

Molarity of sodium thiosulfate solution = 1.77 M

Volume of sodium thiosulfate solution = 180.0 mL = 0.1800 L

Putting values in equation 1, we get:

\text{Moles of sodium thiosulfate}={1.77}\times{0.1800}=0.319moles

Mass of sodium thiosulfate = moles\times {\text {Molar mass}}=0.319moles\times 158.11g/mol=50.4g

Thus 50.4 g of sodium thiosulfate the chemist has added to the flask.

6 0
3 years ago
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