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horsena [70]
3 years ago
10

Will AWARED BRAINIEST ASAP

Chemistry
2 answers:
vovangra [49]3 years ago
8 0
3 would be most rocky planets
4 would be true
5 would be closest planet to the sun
6 would be remains that never formed a planet
7 would be planet A orbits faster than planet B
8 would be Saturn 
viktelen [127]3 years ago
4 0

Answer:

3. one of the rocky planets

4. True

5. closest planet to sun

6. Most of them lie in a belt between Earth and Mars.

7. Planet A orbits faster than Planet B.

8. Saturn

Explanation:

3. Jupiter is the fifth planet of the solar system. It is the largest Jovian planet made of gases such as hydrogen. It has 79 known moons. The great red spot is a largest cyclone present on it which as big as two Earths'.

It is a gaseous planet and not a rocky one.

4. The shape of the orbit of a planet depends on the gravitational pull. The balance between the forward motion of planets and the gravitational pull of other planets and star determines the orbit. Thus, the given statement is true.

5. Mercury is the closest planet to Sun. Venus is the second planet from the Sun. It has very thick atmosphere which makes it the hottest planet of the solar system as the sun heat gets trapped in its thick atmosphere mostly made up of carbon-dioxide. Venus has no moons. It has a rocky surface.

6. Asteroids are the irregular sized and shaped bodies present in the solar system which orbit the sun. Most the asteroids are present between the orbits of Mars and Jupiter. These are thought to be remains of the planet which could never be formed between Mars and Jupiter.

7. From Kepler's law, we understand that the planets closer to the star have smaller orbital period i.e orbit faster than the planets which are farther. Thus, planet A which closer to the star would have shorter orbital period and faster orbital speed.

8. According to the given chart, Saturn contains most of the hydrogen gas. Saturn is a gaseous planet. It has so low density that it can even float on water. It is composed of hydrogen gas and metallic hydrogen. It is surrounded by a ring system.

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How to calculate density (what’s the formula) <br> density=_ divided by _
Sphinxa [80]

Answer:

density equals weigt divided by volume

Explanation:

density =  \frac{m}{v}

8 0
3 years ago
Name the noble gas atom that has the same electron configuration as each ion in the compound rubidium oxide
Zepler [3.9K]
In rubidium oxide - Rb₂O , the ions are Rb⁺ and O²⁻
Rb is a group one element with one valence electron. To become stable it loses its outer electron to gain a complete outer shell.
Electronic configuration of Rb is - 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 5s¹
Once it loses its valence electron the configuration is;
 - 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 
The noble gas with this configuration is Krypton - Kr

Oxygen electron configuration is 1s² 2s² 2p⁴
Once it gains 2 electrons the configuration is  - 1s² 2s² 3p⁶
The noble gas with this configuration is Neon - Ne
3 0
3 years ago
Consider the change given below. At constant pressure, is work done by the system on the surroundings? By the surroundings on th
alexira [117]

Answer : At constant pressure work is done by the system on the surroundings.

Explanation :

Work done : Any quantity that flows across the boundary of a system during a change in its state and it completely convertible into the lifting of a weight in the surroundings.

Formula for work done is:

w=-p_{ext}dV

Sign convention :

  • When volume expand then system work that means work done by the system.

w = (-ve)

  • When volume compress then surrounding work that means work done on the system.

w = (+ve)

The given reaction is:

Hg(l)\rightarrow Hg(g)

This is a evaporation process in which phase changes from liquid state to gaseous state at constant temperature.

At constant pressure, work depends only on volume.

In evaporation process, the volume expand that means work is done by the system on the surroundings.

Sign convention is, w = (-ve)

Thus, at constant pressure work is done by the system on the surroundings.

7 0
3 years ago
What is the luster of aluminum
Mamont248 [21]

Answer:

Luster of aluminum is Silver-White.

Explanation:

Aluminium is a Silver-White metal which is extracted from the Bauxite ore which can be reddish brown, white, tan, grey-white and tan-yellow in color and have the minerals like Gibbsite, Boehmite and Diaspore which are the minerals of the aluminium.

The Bauxite is the rock from which the Bauxite ore is extracted which have the minerals of the aluminum.

The luster of a metal is the color and shine of it and its shiny appearance.

Aluminium is a light weight metal but have a moderate hardness which makes a wider use of it. Aluminium is used in many places where the weight of the material is kept light but its hardness can be increased by mixing some other metals in it making hard alloy with lighter weight.

It is used in transportation vehicles, buildings, and many other places like Air crafts as the weight should be kept controlled to give a perfect lift to the Air craft.

3 0
3 years ago
Balance chemical equation ClO2+H2O=HClO3+HCl
steposvetlana [31]

Answer:

6CIO2 + 3H2O = 5HCIO3 + HCI

Explanation:

The 2 in CIO2 is tiny, the 2 in H2O is tiny, and the 3 in HCIO is tiny.

8 0
3 years ago
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