1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
skad [1K]
3 years ago
15

According to observations, the overall chemical composition of our solar system and other similar star systems is approximately

(a) 98% hydrogen and helium, 2% all other elements combined; (b) 98% ice, 2% metal and rock; (c) 100% hydrogen and helium.
Chemistry
1 answer:
jonny [76]3 years ago
3 0

Answer:A

Explanation:

The solar system consist of the sun, the planets, stars and other objects. The chemical composition of the Sun consist mainly of Hydrogen and helium.

The sun is the largest object in the Solar system, it comprises nearly all the matter in the Solar System, Also the largest planet after the Sun are Jupiter and Saturn are giant planets forming almost the remaining matter of the solar system.

Like the Sun, the mass of Jupiter and Saturn are composed of roughly 98% hydrogen and helium with 2% of all the other elements combined.

You might be interested in
in which level of organization would the roots of a plant most likely be classified? Please explain too
abruzzese [7]

Kaka ml nyu yan wala kaming paki kung ano ang lagi ginagawa nyu

8 0
3 years ago
Quiz
olga2289 [7]

What does matter mean?

Object which has mass and occupies space

What does atom mean?

The smallest particle of a chemical element which is made mainly by 3 sub-atomic particles called Protons,Electrons and Neutrons.

What does molecule mean?

A small group of atoms bonded together.

8 0
3 years ago
Read 2 more answers
Carbon dioxide gas is produced by the reaction of oxygen gas and solid carbon . Write a balanced chemical equation for this reac
grandymaker [24]

I think it’s like this.

C+2O→CO2

5 0
3 years ago
6. The fusion of 4 H-1 nuclei to produce two positrons and one other nuclei.​
KIM [24]

Explanation:

Normally, fusion involves two heavy hydrogen nuclides but since we have 4 light hydrogen nuclides, two of which underwent positron emission, thus changing two protons into neutrons plus 2 positrons and 2 neutrinos. The resulting nucleus from this fusion reaction is an He-4 nucleus.

3 0
2 years ago
If potassium (K) has a density of 0.86 g/cm3, which element would have a similar density?
Nata [24]

Answer:

C: Sodium

Explanation:

Iron had a way higher density neon has way to know as well as carbon and the closest one is sodium

4 0
3 years ago
Read 2 more answers
Other questions:
  • If 801 J of heat is available, what is the mass in grams of iron (specific heat = 0.45 J/g・°C) that can be heated from 22.5°C to
    10·1 answer
  • Rutherford created a planetary model for atoms after his experiments. Imagine if Rutherford's idea that electrons radiate energy
    15·2 answers
  • Which group of compounds is described as insoluble?
    15·2 answers
  • What is the oxidation number of a pure element?
    10·1 answer
  • 2. Which determines the identity of an
    6·1 answer
  • How do catalysts increase the rate of a chemical reaction?
    5·2 answers
  • A chemist prepares a solution of aluminum chloride (AlCl3) by measuring out 11 gr of aluminum chloride (AlCl3) into a 50 ml volu
    10·1 answer
  • If an object loses electrons it will become negatively charged. <br><br><br> True<br><br> False
    6·1 answer
  • When coal goes through combustion it releases nitrogen and sulpur into the air in the form of what
    7·1 answer
  • In the following reaction, how many liters of oxygen will react with 270 liters of ethene (C2H4) at STP?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!