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dybincka [34]
3 years ago
15

235u92 and 238u92 are examples of _____. select one:

Chemistry
1 answer:
nata0808 [166]3 years ago
7 0
235u92 and 238u92 are examples of isotopes.
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Radioactive cobalt-60 is used in radiation therapy treatment. Cobalt-60 undergoes beta decay. This type of nuclear reaction is c
dsp73
The answer is (1) natural transmutation. When Co-60 undergoes beta decay (be it beta positive or beta negative), the product is another element (Fe or Ni). Transmutation is when an element turns into another element via a nuclear process. Since this occurs without the aid of another agent that causes the nuclear change (e.g. a neutron source), it is natural transmutation.
6 0
3 years ago
A solution is made containing 4.92 g of sodium lithium chloride per 347 g of water.
Margaret [11]

% mass of a solution is the mass of the solute present per 100 g of solution. It can be calculated using the formula,

Mass % = \frac{Mass of solute (g)}{Mass of solution (g)} * 100

Mass of solute = 4.92 g

Mass of solvent, water = 347 g

Total mass of solution = 347 g + 4.92 g = 351.92 g

Mass % of the solute = \frac{4.92 g}{351.92 g} * 100 = 1.398 %

Therefore, the weight/weight % = 1.398 %

7 0
3 years ago
Two basketballs are sitting 1 m apart and are not moving. Which best explains why the gravitational force does not cause them to
Margaret [11]
Because their is no motion in them their for they can not do anything but just sit their I hope I helped u if not I’m so so sorry
5 0
3 years ago
Which of the samples described below contains the FEWEST atoms? No calculation is needed to answer this question.
Monica [59]

Hello!

To do this, use the molar mass. This is how much a mole of an atom weighs. A mole is 6.02214076×10²³ atoms.

Molar masses of:

Se: 78.96 g/mol

Cu: 63.546 g/mol

Ba: 137.327 g/mol

Now, the element with the highest molar mass will have the fewest atoms. This is because the element weighs more, so therefore for the same amount of mass, there will be less of the element needed to reach that mass.

Therefore, 10g of Ba would have the fewest number of atoms.

Hope this helps!

6 0
4 years ago
According to most scientists, cold fusion
Anton [14]

will not be a practical source of energy on Earth

3 0
3 years ago
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