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hoa [83]
2 years ago
7

An atom with atomic number of 20 and a plus 1 charge (Help)

Chemistry
1 answer:
VMariaS [17]2 years ago
6 0

Answer:

calcium 20. charge of calcium is +2

2,8,8,2  is elecrons arrangement in the outermost shell.2 electrons in the outermost shell easily remove it. And form stable cations.

Explanation:

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Are materials that flow.<br> Fill in the blank
sergiy2304 [10]

Answer:

liquids

the particles are free to move

8 0
2 years ago
Consider the reaction of 1-butanol with K2Cr2O7, H2SO4, heat. Draw only the organic product derived from 1-butanol.
guapka [62]

Answer:

Butanoic acid.

Explanation:

Hello,

In this case, when a primary alcohol such as 1-butanol (OH is bonded to a primary carbon) is oxidized in the presence of a strong oxidizing media such as potassium dichromate (K2Cr2O7) and sulfuric acid, the stepwise oxidation goes to the corresponding aldehyde with a further oxidation to the corresponding carboxylic acid:

R-CH_2-OH\longrightarrow R-COH\longrightarrow R-COOH

Therefore, on the attached picture you can find that the formed aldehyde is butanal and the inly organic product, due to the strong oxidizing media is finally butanoic acid.

Best regards.

7 0
3 years ago
Help me solve this equation for K please, will give brainliest
balandron [24]

answer:

1.H²(g)+1²(g)=2H(g)

Explanation:

HAHAH IDON'T NO hahahha

8 0
2 years ago
The solvent in a solution evaporates out over time, leaving behind the solute.
Andrews [41]

Answer:

When a solution is heated, the solvent evaporates, leaving behind the dissolved solids as residue. When a solution containing dissolved solutes is heated, the solvent will evaporate.

Explanation:

. P.S. Evaporation to dryness cannot be use for solutions like sugar solution because the sugar will decompose upon heating.

3 0
2 years ago
PLEASE HELP Determine the number of neutrons for the given isotopes:
zepelin [54]
<span>Helium = 1
Carbon = 8
Nitrogen = 8
Strontium = 52
Tellurium = 71

If you look on a periodic table, on each element there is a number on the top left. This represents the number of protons in an atom. Protons have a mass of 1 (in relative to Carbon-13)

If we take nitrogen-15 for example; The number 15 tells you that the isotope has a mass of 15. Now if you look on the periodic table, Nitrogen has a proton number of 7. Only protons and neutrons have a mass, electrons are considered to be negligable. Therefore the number of neutrons Nitrogen-15 contains is 15 - 7 = 8 </span>
3 0
2 years ago
Read 2 more answers
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