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3 years ago

What holds everything in place in the universe?

Chemistry

2 answers:

tresset_1 [31]3 years ago

8 0

Answer:

Gravity

Gravity is the force by which a planet or other body draws objects toward its center. The force of gravity keeps all of the planets in orbit around the sun.

Explanation:

hope this helps

vesna_86 [32]3 years ago

6 0

gravity because yes

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Compute the following and give your answer on scientific notation

Nata [24]

Answer:

6*10^-3

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Procedure in the attached file

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3 years ago

An average microwave uses a frequency of 2.54 GHz. How much energy is emitted?

romanna [79]

Answer:

0.120 m

Explanation:

What you need to know here is that frequency and wavelength have an inverse relationship as described by the equation

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3 years ago

Predict at least two circumstances that would cause a system in equilibrium to change the concentrations of its reactants and pr

Masja [62]

At the point when a response achieves a condition of concoction balance under a specific arrangement of conditions, no further changes in the groupings of reactants and items happen. On the off chance that a change is made in the conditions under which the framework is at harmony, substance change will happen so as to build up another balance. The components that can impact harmony are an adjustment in focus, change in weight (or volume), and change in temperature.

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3 years ago

On a planet where the temperature is so high, the ground state of an electron in the hydrogen atom is n = 4. What is the ratio o

kvv77 [185]

Answer:

1:16

Explanation:

The ground state of an electron on the planet is n = 4 compared the ground state of an electron at n =1. For a hydrogen atom, the electron energy level is given as:

$E(n)=\frac{13.6}{n^2}\\ \\Where\ n\ is\ the\ ionization \ energy$

$E(4)=\frac{13.6}{4^2}=\frac{13.6}{16}\\ \\E(1)=\frac{13.6}{1^2}=\frac{13.6}{1}\\ \\The\ ratio\ of\ their\ ionization\ energy=\frac{E(4)}{E(1)} =\frac{\frac{13.6}{16} }{\frac{13.6}{1} } =\frac{1}{16}=1:16$

Hence the ratio of their ionization energies is 1:16

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3 years ago

What is the correct value for Avogadro's number?

nydimaria [60]

Answer: Option A. 6.022 x 10^23

Explanation:

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3 years ago