1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
pentagon [3]
3 years ago
7

What is the difference between a stable and unstable isotope

Chemistry
1 answer:
USPshnik [31]3 years ago
8 0

Stable isotopes are not radioactive nor dangerous.

Unstable isostopes are radioactive and have different mass of the element.

You might be interested in
How many significant figures are in 0.000128?
san4es73 [151]
Three sig figs, the leading zeros are not sig figs
6 0
3 years ago
There are two naturally occurring isotopes of boron. 10 B has a mass of 10.0129 u. 11 B has a mass of 11.0093 u. Determine the a
Vanyuwa [196]
<h2>Natural Abundance for 10B is 19.60%</h2>

Explanation:

  • The natural isotopic abundance of 10B is 19.60%.
  • The natural isotopic abundance of 11B is 80.40%.
  • The isotopic masses of boron are 10.0129 u and 11.009 u respectively.

For calculation of abundance of both the isotopes -

Supposing it was 50/50, the average mass would be 10.5, so to increase the mass we need a more percentage of 11.

Determining it as an equation -

10x + 11y= 10.8

x+y=1 (ratio)

10x + 10y = 10

By taking the denominator away from the numerator

we get;

y = 0.8

x + y = 1

∴ x = 0.2

To get percentages  we need to multiply it by 100

So, the calculated abundance is 80% for 11 B and 20% 10  B.

5 0
3 years ago
If you want to use a serial dilution to make a 1/50 dilution. The first dilution you make is a 1/5 dilution with a total volume
fomenos

Answer:

c.

Explanation:

A serial dilution is a dilution that is made fractionated. The stock solution is diluted, then this now solution is diluted, and then successively. The final dilution is the multiplication of the steps dilutions.

The representation of the dilution is v/v (volume per volume) indicates how much of the stock solution is in the total volume of the solution. So 1/5 indicates 1 mL to 5 mL of the solution. If the final volume must be 1 mL, then the stock solution must be 0.2 mL (0.2/1 = 1/5), and the volume of the solvent is 1 mL - 0.2 = 0.8 mL.

The second solution is done with a dilution of 1/10 or 1 mL of the first solution in 10 mL of the total solution. Because the solution has 1 mL, then the volume of the first solution must be 0.1 mL (0.1/1 = 1/10), and the volume of the solvent that must be added is 1 mL - 0.1 mL = 0.9 mL.

5 0
3 years ago
Calculate the mass percent by volume of 330.1 g of glucose (C₆H₁₂O₆, MM = 180.2 g/mol) in 325 mL of solution.
nadezda [96]

Answer: The mass percent by volume is 101.6%

Explanation:

The solution concentration expressed in percent by volume means that the amount of solute present in 100 parts volume of solution.

It is represented in formula as :

mass percent by volume =\frac{\text {mass of solute}\times 100}{\text {Volume of solution in ml}}\%

Given : mass of glucose = 330.1 g

volume of solution = 325 ml

Thus mass percent by volume =\frac{330.1g\times 100}{325ml}=101.6\%

Thus the mass percent by volume is 101.6%

3 0
2 years ago
I need help on 12 what do u do
pickupchik [31]
Benzene at the same prssure ie the horizontal dotted line, benzene requires the minimal temperature hence its most volatile
4 0
3 years ago
Other questions:
  • 1. How is the density of a substance calculated? 2. If the shape of an object is irregular, like a stone, how can you measure it
    11·1 answer
  • Convert 512 kilograms to milligrams.<br><br> 0.000512<br> 0.512<br> 512,000<br> 512,000,000
    13·2 answers
  • The isotope of an atom containing 31 protons and 39 neutrons suddenly has two neutrons added to it. what isotope is created? loo
    5·2 answers
  • How has the fishing industry along the Chesapeake Bay changed in the last 25 years?
    7·1 answer
  • Sulfur dioxide _____.
    7·1 answer
  • A cell using protein-mediated facilitated diffusion is treated with a toxin that prevents conformation change in the membrane pr
    6·1 answer
  • Which ideas are part of the cell theory?
    13·1 answer
  • Mg(OH)2 + 2 HBr à MgBr2 + 2 H2O
    6·1 answer
  • Why is Anton Von Leeuwenhoek important in the cell theory?​
    13·1 answer
  • Electrons must be able to flow through a material in order for the material to conduct
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!