CHEMISTRY HIGH SCHOOL

Which of the following sets of characteristics describe what we know about the inner planets?Select one:
a. They are closest to the sun, have many moons, and include ring systems.
b. They are closest to the sun, have many moons, and include ring systems.
c. They have rocky surfaces, no rings, and few or no moons.
d. They have rocky surfaces, ring systems, and are larger in size.

Answers

Answer 1
Answer:

The sets of characteristics describe what we know about the inner planets is that have rocky surfaces, no rings, and few or no moons. The answer is letter C. Also, they are smaller in sizes compared to the outer planets. The rest of the choices are characteristics of the outer planets.
Answer 2
Answer:

Answer: The correct answer is Option c.

Explanation: There are 2 types of planets in Our Solar system:

1. Inner planets: There are 4 planets which are known as inner planets which are Mercury, Venus, Earth and Mars. These 4 planets lie close to Sun. These planets have rocky surfaces and have no ring system in them. The maximum number of moons in inner planets are 2. The orbital time of these planets is less than the outer planets.

2. Outer planets: There are 4 planets which are known as inner planets which are Jupiter, Saturn, Uranus and Neptune. These 4 planets lie far from the Sun. These planets have gaseous surfaces and have ring system in them. These planets have many number of moons as compared to the inner planets. The orbital time of these planets is more than the inner planets.

From the above information, the correct answer is option c.

Related Questions

Which equation represents a single replacement reaction? Thanks!
The spontaneous intermingling of atoms among different substances is accomplished by _____.-molecular kinetic energy -diffusion -displacement -condensation
A solution contains 15 g Na₂CO₃ and 235 g if H₂O? What is the mass% of the solution?​
An analysis of an oxide of nitrogen with a molecular weight of 92.02 amu gave 69.57% oxygen and 30.43% nitrogen. What are the empirical and molecular formulas for this nitrogen oxide? Complete and balance the equation for its formation from the elements nitrogen and oxygen.
As the number of effective collisions between reacting particles increases the rate of reaction

Assume you do not know which peak in GC chromatogram corresponds to each alkene (and you are not sure whether the one with lower boiling point will appear first). Propose how you can identify which peak corresponds to which alkene in terms of "spiking products"

Answers

GC chromatograms often already have a library of compounds to determine what the substance is. In case the compound cannot be found in the library, one common alternative scientists use when performing is spiking.

Spiking involves gradually increasing the concentration of one specific compound, and looking for a rise in peak height. Here, you can identify which peak corresponds to the compound you spiked. You can do this for each alkene, to determine its peak and retention time.

The factor that affects how easily an electron can be removed from an atom is the.

Answers

Atomic radius aka distance from the nucleus to the outermost energy level. The greater this distance, the less electrostatic attraction between these oppositely charged particles.

A catalyzed reaction will have a ____ activation energy, and this leads to a _____ in the reaction rate. A) lower, decrease
B) lower, increase
C) higher, decrease
D) higher, increase

Answers

I chose d and got it wrong. The correct answer is b.
The answer is D, a catalyst speeds up the reaction rate so a catalyzed reaction will have higher activation energy thus and increase in rate of reaction.

According to the Bohr model of the atom, energy is emitted as light when electronsO fall back down to a lower energy level
O jump up to a higher energy level
are absorbed into the nucleus
O are ejected from the nucleus

Answers

Answer:

After jumping to the higher energy level also called the excited state the excited electron would be in a less stable position, so it would quickly emit a photon to relax back to a lower, more stable energy level.

Where do cold air masses form?

Answers

cold air masses originate far away from the Equater and they aquire the characteristics of the area they formed over, and then travel closer to the equater, 

Which element is most likely to carry electric current easily?tin
sulfur
anitmony
selenium

Answers

Answer: Option (a) is the correct answer.

Explanation:

Electric current is the flow of electrons and an atom that has free electrons will be able to carry current easily.

Hence, electronic configurations of the given elements are as follows.

Tin (Sn) - [Kr]4d^(10)5s^(2)5p^(2)

Sulfur (S) - [Ne]3s^(2)3p^(4)

Antimony (Sb) - [Kr]4d^(10)5s^(2)5p^(3)

Selenium (Se) - [Ar]3d^(10)4s^(2)4p^(4)

So, sulfur and selenium being non-metals won't be able to conduct electricity. Whereas both tin and antimony are poor metals but they are able to conduct electricity.

Antimony has half filled p-shell so, it will not lose its valence electrons as it is stable. Whereas tin will easily lose its valence electrons to become stable.

Thus, we can conclude that tin is the element that is most likely to carry electric current easily.
Your answer would be tin
Other Questions
How is helium which is produced by the conversion of hydrogen into energy related to the solar core
Which of the following is not equal to 0.536 kilometers? 53.6 hectometers (hm) 536 meters (m) 536,000 millimeters (mm) 53,600 centimeters (cm)
Calculate the decrease in temperarure when 2.00 L at 20.0 degrees celsius is compressed to 1.00 L.
Which of the following is an experiment? A) measuring the mean and standard deviation of measurements from a sample B) generating outcomes based on some model of how they are really produced C) comparing the outcomes of two different treatment protocols D) recording the high and low temperature at a particular location every day