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3 years ago

SCIENCE!!!! PLEASE HELP!!! 20 POINTS

Chemistry

2 answers:

Annette [7]3 years ago

4 0

Answer:

As the Earth rotates, it also moves, or revolves, around the Sun. ... As the Earth orbits the Sun, the Moon orbits the Earth. The Moon's orbit lasts 27 1/2 days, but because the Earth keeps moving, it takes the Moon two extra days, 29 1/2, to come back to the same place in our sky.

Explanation:

sertanlavr [38]3 years ago

3 0

The answer above I believe is correct I was gonna say the same!!! GG

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Convert 2.859 liters to milliliters..

Elden [556K]

Answer:

2859 milliliters

Explanation:

Just move the decimal to the left and you get this as your answer

Formula : multiply the volume value by 1000

Hope this helps :)

4 0

3 years ago

Read 2 more answers

A wave is moving towards shore with a velocity of 5.0 MS if it’s frequency is 2.5 Herz what is the wave length

EastWind [94]

Answer:

Explanation:

The wavelength of a wave can be found by using the formula

$\lambda = \frac{c}{f} \\$

where

c is the speed of the wave

f is the frequency

From the question

c = 5 m/s

f = 2.5 Hz

We have

$\lambda = \frac{5}{2.5} = 2 \\$

We have the final answer as

Hope this helps you

8 0

3 years ago

Predict what would change about your number of sandwiches and your thinking if you had the same 6 pieces of bread and 4 slices o

iren2701 [21]

The number of sandwiches that can made with 6 pieces of bread and 4 slices of cheese is 3 sandwiches.

<h3>What are limiting reactants?</h3>

Limiting reactants are those reactants which determine the amount of product that can be formed since they get used up in a reaction.

In the making of sandwiches from bread and cheese, the limiting reactant is the material that is used up.

The formula for making a sandwich is given below;

2 pieces of bread + 1 slice of cheese = 1 sandwich

6 pieces of bread can make 3 sandwiches

4 slices of cheese can make 4 sandwiches

Thus, bread is the limiting reactant.

Therefore, the number of sandwiches that can made with 6 pieces of bread and 4 slices of cheese is 3 sandwiches.

Learn more about limiting reactants at: brainly.com/question/14225536

#SPJ1

7 0

2 years ago

Read 2 more answers

How many moles of ammonium ions are in 125 mL of 1.40 M NH4NO3 solution? ________ moles (give answer with correct sig figs in un

Sholpan [36]

The number of mole of ammonium ion, NH₄⁺ in the solution is 0.175 mole

We'll begin by calculating the number of mole of NH₄NO₃ in the solution. This can be obtained as follow:

Volume = 125 mL = 125 / 1000 = 0.125 L

Molarity = 1.40 M

Mole = Molarity x Volume

Mole of NH₄NO₃ = 1.40 × 0.125

Finally, we shall determine the number of mole of ammonium ion, NH₄⁺ in the solution. This can be obtained as follow:

NH₄NO₃(aq) —> NH₄⁺(aq) + NO₃¯(aq)

From the balanced equation above,

1 mole of NH₄NO₃ contains 1 mole of NH₄⁺

Therefore,

0.175 mole of NH₄NO₃ will also contain 0.175 mole of NH₄⁺

Thus, the number of mole of ammonium ion, NH₄⁺ in the solution is 0.175 mole

Learn more: brainly.com/question/25469095

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2 years ago

Dipole-induced dipole attractions exist between molecules of water and molecules of gasoline, yet these two substances do not mi

lana [24]

Gasoline is predominantly octane, C8H18. Something like soap would be a great homogenizer. Soap is composed of a long hydrocarbon chain with a tiny, highly polar tip on one end. Usually, the soap is the anion of a salt, NaX. This allows the polar end of the soap to stick to water, while the nonpolar end sticks to the oil.

$\frac{kg*m*m}{m^3*s*\mu}=1=\frac{kg}{m*s*\mu}$

$\mu=\frac{kg}{m*s}$

3 0

3 years ago