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Nata [24]
3 years ago
11

Which particles have a similar relative mass

Chemistry
1 answer:
olganol [36]3 years ago
7 0

Answer:

c ) protons and neutrons

Explanation:

Protons and neutrons have approximately the same mass, but they are both much more massive than electrons (approximately 2,000 times as massive as an electron). The positive charge on a proton is equal in magnitude to the negative charge on an electron.

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1) Ca-37, with a half-life of 181.1(10) ms.
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If the average speed of a helium atom at a certain temperature is 1120 m/s what is the speed in miles per hour?
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3 years ago
To dilute a HCl solution from 0.400 M to 0.100 M the final volume must be
sp2606 [1]

<u>Answer:</u>

<em>The final volume must be 400 mL.</em>

<em></em>

<u>Explanation:</u>

Let us assume the Initial volume as 100ml

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So,

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5 0
4 years ago
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A solution with a volume of 1.00 l is 0.450 m in ch 3 cooh(aq) and 0.550 m in ch 3 coona(aq). what will the ph be after 0.0800 m
Semenov [28]
Before addition of HCl,

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After addition of 0.08 M HCl, following reaction occurs in system:
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Thus, in reaction system conc. of CH3COOH will increase to 0.53 M (0.08M + 0.450M)
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Now, conc. of H+ ions = ka \frac{[acid]}{[conjugated base]}
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Now, pH = -log [H+] = -log (1.1227 x 10^-5) = 4.94
4 0
3 years ago
Which tiny, round “factory” puts together protein and is often found in the endoplasmic reticulum?
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<span>In the cytoplasm, ribsomal RNA (rRNA), a type of RNA, and protein combine to form a nucleoprotein called a ribosome. The ribosome serves as the site and carries the enzymes necessary for protein synthesis. They are often takes the shape of small round particles attached in the endoplasmic reticulum. The ribosome attaches itself to m-RNA and provides the stabilizing structure to hold all substances in position as the protein is synthesized. Several ribosomes may be attached to a single RNA at any time.  <span> </span></span>
8 0
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