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3 years ago

What does this equation describe?

Chemistry

1 answer:

Gwar [14]3 years ago

5 0

Answer:

the energy of photons emitted by electron dropping from an excited energy state

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When using the process of evaporation to separate a mixture, what is left behind

brilliants [131]

Answer:

When a solution is heated, the solvent evaporates, leaving behind the dissolved solids as residue. When a solution containing dissolved solutes is heated, the solvent will evaporate. Only the solute will remain in the evaporating dish.

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8 0

3 years ago

Why would a doctor most likely restrict a patient's contact with other people while the patient receives internal

Vinvika [58]

Answer: A.

Explanation: The patient's stress and anxiety would be eliminated. O High levels of radiation can diffuse through the patient's skin. Social contact would increase the effect of the radiation treatment.

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3 years ago

Dolomite is a carbonate of magnesium and calcium. Analysis shows that 7.81 g of dolomite contains 1.70 grams of Ca. Fluorite is

andrew11 [14]

Answer:

The richer source of calcium is fluorite.

Explanation:

Percentage of element in compound :

$=\frac{\text{mass of element}}{\text{Mass of compound}}\times 100$

1. Dolomite is a carbonate of magnesium and calcium:

Given mass of dolomite = 7.81 g

Mass of calcium present in given mass of dolomite = 1.70 g

Percentage of calcium in Dolomite:

$=\frac{1.70 g}{7.81 g}\times 100=21.77\%$

2. Fluorite is a mineral of calcium and fluorine:

Given mass of fluorite = 2.76 g

Mass of fluorine present in given mass of fluorite = 1.34 g

Percentage of fluorine in fluorite :

$=\frac{1.34 g}{2.76 g}\times 100=48.55\%$

Percentage of calcium in fluorite = 100% - 48.55 % = 51.45%

Percentage of calcium in fluorite > Percentage of calcium in Dolomite

51.455 > 21.77%

So, the richer source of calcium is fluorite.

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3 years ago

Can someone solve this plz<br> βeta decay<br> carbon atomic mass 14 <br> atomic # 6

nordsb [41]

Answer:

14/6C your welcome

Explanation:

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3 years ago

FOR HUGE GRADE PLEASE NEED HELP!!!!!!!!!!! ❤️

Lesechka [4]

Answer:

...

Explanation:

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3 years ago

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