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tia_tia [17]
3 years ago
9

Which energy level requires the most energy to remove an electron?

Chemistry
1 answer:
SOVA2 [1]3 years ago
5 0

Answer:

ionization energy remove an electron

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Classify metals based on more reactive, moderate and less reactive​
Alex17521 [72]

more reactive metals:

potassium (highest reactivity)

sodium

calcium

magnesium

moderate reactive metals:

aluminium

zinc

iron

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least reactive metals:

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silver

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3 years ago
Which statement correctly compares the number of chromosomes in a body cell to that in a sex cell of humans?
ad-work [718]
The answer is C: "<span>A body cell has 46 chromosomes; a sex cell has 23"</span>
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What are the uses of glycerin?<br>​
Ilia_Sergeevich [38]

Explanation:

This medication is used as a moisturizer to treat or prevent dry, rough, scaly, itchy skin and minor skin irritations (e.g., diaper rash, skin burns from radiation therapy). Emollients are substances that soften and moisturize the skin and decrease itching and flaking.

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3 years ago
C. Another radioisotope of americium exists which has an atomic mass of 242.
ollegr [7]

Answer:

1 g  

Explanation:

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We can make a table of the mass left after each half-life.

\begin{array}{cccc}\textbf{No. of} & & \textbf{Percent} & \textbf{Mass}\\\textbf{Half-lives} & \textbf{Time/h} & \textbf{Remaining} & \textbf{Remaining/g}\\0& 0 & 100 & 8\\1 & 16 &50 & 4\\2 & 32 & 25 & 2\\3 & 48 & 12.5 & 1\\4 & 64 & 6.25 & 0.5\\\end{array}

The mass remaining after 48 h  is 1 g.

7 0
3 years ago
NEED HELP FAST!!
koban [17]

Answer:

I'm pretty sure that's right.

Explanation:

Download pdf
8 0
3 years ago
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