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3 years ago

The stability of a nucleus is determined by the ratio of electrons to protons.

Chemistry

1 answer:

Lera25 [3.4K]3 years ago

5 0

B. False
Stability is determined by the ratio of neutrons and protons. Electrons are not in nucleus.

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Why is it important to classify living organisms? The DNA of organisms may be more easily analyzed. Organisms may survive longer

postnew [5]

Answer:

All living things are organized into groups by scientists as they are identified. Living things organized into particular groups have common characteristics. Overall, the reason scientists classify living things is to understand the relationships between different organisms

Explanation: Naruto

7 0

3 years ago

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A 1. 00 ml sample of an unknown gas effuses in 11. 1 min. an equal volume of h2 in the same apparatus under the same conditions

Damm [24]

A 1. 00 ml sample of an unknown gas effuses in 11. 1 min. an equal volume of h2 in the same apparatus under the same conditions effuses in 2. 42 minutes then the molar mass of the unknown gas is 41.9.

Molar mass of H2 = 2

Molar mass of unknown gas = ?

rate 1 = 11.1

rate 2 = 2.42

<h3>What is graham law? </h3>

Graham's law states that the rate of diffusion or effusion of a given gas is inversely proportional to the square root of its molar mass.

By apply graham law

Rate1/rate2 = sqrt(MW2/MW1)

$[\frac{rate1}{rate2} ]^{2} = \frac{MW2}{2} \\\\\\mw= 2[\frac{11.1}{2.42} ]^{2} \\\\= 20.97 X 2 \\\\= 41.9$

Thus, we found that the molar mass of the unknown gas is 41.9.

Learn more about graham's law: brainly.com/question/12415336

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4 0

2 years ago

PLEASE HELP!

svetoff [14.1K]

Answer:

period 3 and group 3

Explanation:

I'm saying group 3 because that is how I learnt it at school, but if you count it then it's in group 13.

8 0

3 years ago

How many molecules of CrCl₃ are produced when 2.89 moles of CuCl₂ react? *<br> 2Cr+3CuCI2-2CrCI3+3Cu

juin [17]

Explanation:

The reaction is CaCO

+2HCl→CaCl

O+CO

Thus, 2 moles of HCl reacts with one mole of calcium carbonate to produce one mole each of calcium chloride, water and carbon dioxide respectively.

Hence, 3 moles of HCl will react with excess of calcium carbonate to produce 3×

=1.5 mol of carbon dioxide

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3 years ago

The si unit for measuring acceleration is?

ehidna [41]

m/s² aka meter per second squared.

acceleration = change in velocity/time

= distance/time

time

= m/s

=m/s^2

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4 years ago

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