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Rus_ich [418]
3 years ago
6

It would most likely be difficult to collect a sample of which isotope? Pb-206 Po-214 U-234 Ra-226

Chemistry
2 answers:
MArishka [77]3 years ago
5 0

The easiest would be Pb-206 because it's stable

Blizzard [7]3 years ago
4 0

Answer:

Pb-214

Explanation:

i just took the test, edge 2021

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How do you dispose a permanent glue?
const2013 [10]

Answer:

If you have the time you can take it to a Waste Management Facility.

Explanation:

Because these unhardened glues are flammable, do not dispose of them in the trash or down the drain. Keep them away from open flames. If the glue is water-based, solidify it and throw it in the trash.

8 0
4 years ago
How can I calculate the mass percent of carbon, nitrogen and oxygen in caffeine, C8H10N4O2.
Ahat [919]

You must first calculate the total weight of 1 mole of the substance. You do this by finding the molar weights on the periodic table of each of the elements in the compound:

8(12.01g)+10(1.008g)+4(14.007g)+2(15.999g)=96.08g+10.08g+56.028g+31.998g=194.186g

So now we take the amount of each element that is given in the compound and divide it by the total mass of the compound:

Carbon: 96.08g

\frac{96.08g}{194.186g}= 0.49478=49.48

Carbon = 49.48%

Nitrogen: 56.028g

\frac{56.028g}{194.186g}=0.28853=28.85

Nitrogen = 28.85%

Oxygen: 31.998g

\frac{31.998g}{194.186g} =0.16478=16.48

Oxygen = 16.48%

8 0
3 years ago
Read 2 more answers
How many molecules of sulfur trioxide are in 78.0 grams?
zalisa [80]

Answer:

b) 5.87 E23 molecules

Explanation:

∴ mm SO3 = 80.066 g/mol

⇒ molecules SO3 = (78.0 g)(mol/80.066 g)(6.022 E23 molec/mol)

⇒ molec SO3 = 5.866 E23 molecules SO3

5 0
3 years ago
Do all atoms only have one oxidation state​
MA_775_DIABLO [31]
I believe so! If not tell me So I can delete this
4 0
3 years ago
Read 2 more answers
What is the common difference between successive terms in the sequence? 9, 2.5,-4, -10.5,-17,
Reil [10]
6.5 is subtracted from each number.
9 - 6.5 = 2.5
2.5 - 6.5 = -4
-4 - 6.5 = -10.5
-10.5 - 6.5 = -17
or you could think of adding -6.5 to everything if that is easier for you to picture. 
7 0
3 years ago
Read 2 more answers
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