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damaskus [11]
2 years ago
10

Convert the mass of a molecular substance to moles.

Chemistry
1 answer:
olga55 [171]2 years ago
3 0

Try this option, the answers are marked with green colour.

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Which element is most reactive among aluminium, boron, calcium and beryllium? Give reason.
igor_vitrenko [27]

Answer:

<em>Well, if you check the reactivity series, calcium is more reactive than magnesium. This means there's a a trend of increasing reactivity as we go down the group. As beryllium is above magnesium, it must be the least reactive. Then magnesium is in the middle and the most reactive has to be calcium.</em>

4 0
2 years ago
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What is another factor that can influence osmosis?
Burka [1]

Answer:

Concentration gradient - The movement of osmosis is affected by the concentration gradient; the lower the concentration of the solute within a solvent, the faster osmosis will occur in that solvent. Light and dark – They are also factors of osmosis; since the brighter the light, the faster osmosis takes place.

thenks and mark me brainliestt :)) pls

3 0
3 years ago
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What is the attractive force that occurs between the sun and the earth called? friction magnetism weight gravity
natima [27]
I believe the correct answer from the choices listed above is the last option. The attractive force that occurs <span>between the sun and the earth is called gravity. Hope this answers the question. Have a nice day. Feel free to ask more questions.</span>
3 0
3 years ago
Read 2 more answers
Which of the following models represents an atom that is more reactive than the
Zanzabum

Answer:

Model A

Explanation:

Model A represents an atom that is more reactive than the others represented.

Valence electrons actually determine the reactivity of elements. They also determine the properties of elements.

Elements with one valence electron are highly reactive because they need low energy to remove them. They can either gain more electrons to become stable or they share/give out their electrons.

Therefore, Model A is the correct answer because it has one valence electron and its valence electron is farther from the nucleus thereby this makes it more reactive.

8 0
3 years ago
1#
Black_prince [1.1K]

Answer:

1= Magnesium

2 = Option 3 =  1s² 2s² 2p⁶

Explanation:

An electrically neutral atom consist of equal number of protons and electrons.

The answer for 1st q is magnesium because the electronic configuration showed twelve number of electrons. The atomic number of magnesium is twelve that's why this configuration is of Mg.

Mg₁₂ =  1s² 2s² 2p⁶ 3s²

The second answer is option three because has atomic number ten and third electronic configuration have ten electrons.

Ne₁₀ = 1s² 2s² 2p⁶

It is stable electronic configuration. Neon is inert because of this electronic configuration. The outer most shell is completely filled.

8 0
3 years ago
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