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photoshop1234 [79]
2 years ago
13

What is true about asteroids

Chemistry
1 answer:
Igoryamba2 years ago
7 0

Answer:

They are big rocks that fly through space and are made of most commonly chondrite. When they collide, they collide with such force that they create craters on places like the moon.

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The chemical formula for a molecule that contains two chlorine (Cl) atoms is ___________.
Karo-lina-s [1.5K]
CI2 is two chlorine atoms.
6 0
4 years ago
Read 2 more answers
Various plant and animal species are on the verge of extinction.
olga2289 [7]

Answer:

  1: A.) adapted

  2: A.) habitat destruction

Explanation:

Some (few) animals are capable of adjusting their behaviors in relation to human activity and the changes humans make in their habitat. Most are so well adapted to the details of their habitat that they are incapable of surviving when those details change.

"Because all organisms are <u>adapted</u> to their native habitat, human activities that result in <u>habitat destruction</u> are a major reason for their extinction."

_____

<em>Comment on human activities</em>

My friendly local rodent exterminator observed that rodent activity has picked up substantially, since so much human activity has been curtailed by quarantine orders.

3 0
3 years ago
Which atom in the ground state requires the least amount of energy to remove its valence electron?(1) lithium atom (2) potassium
Fudgin [204]
<h3>Answer:</h3>

                   Rubidium (Rb)

<h3>Explanation:</h3>

                           Ionization Energy is defined as, "the minimum energy required to knock out or remove the valence electron from valence shell of an atom".

<h3>Trends in Periodic table:</h3>

               Along Periods:

                                        Ionization Energy increases from left to right along the periods because moving from left to right in the same period the number of protons (atomic number) increases but the number of shells remain constant hence, resulting in strong nuclear interactions and electrons are more attracted to nucleus hence, requires more energy to knock them out.

              Along Groups:

                                        Ionization energy decreases from top to bottom along the groups because the number of shells increases and the distance between nucleus and valence electrons also increases along with increase in shielding effect provided by core electrons. Therefore, the valence electrons experience less nuclear attraction and are easily removed.

<h3>Conclusion:</h3>

                   Given elements belong to same group hence, Rubidium present at the bottom of remaining elements will have least ionization energy due to facts explained in trends of groups above.

5 0
3 years ago
The molecular weight of H2SO4 is:<br>49.078 g/mole<br>98.086 g/mole<br>194 296 armoe​
a_sh-v [17]

Answer:

The answer to your question is:   98 gr / mole

Explanation:

Molecular weight and molecular mass are synonyms and they referred to sum of the the molecular masses of the elements that form part of a compound. Their units are grams/ mole

In your example we need to sum the molecular mass of the components of sulphuric acid.

Like this:

Hydrogen(H) = 1.008 x 2

Sulphur (S)     = 32 x 1 = 32

Oxygen =          16 x 4 = 64

Total     =                       98 gr / mole

3 0
3 years ago
The two major classes of telescopes are the _____ and the _____ telescope.<br><br> Pls help ASAP!!!
hichkok12 [17]

Answer:

refractors and reflectors

Explanation:

4 0
3 years ago
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