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dexar [7]
3 years ago
14

3. Assume that a sample decays with a given half-life. Will you be able to observe when the sample has completely decayed? Why o

r why not?
Chemistry
1 answer:
alexdok [17]3 years ago
4 0

Answer:

demRafi is working odd jobs to save enough money to buy a new phone. Last month, he earned $125 raking leaves for his neighbors. This month, there was a big snowstorm. Rafi earned $235 shoveling snow!

How much money did Rafi earn altogether?Rafi is working odd jobs to save enough money to buy a new phone. Last month, he earned $125 raking leaves for his neighbors. This month, there was a big snowstorm. Rafi earned $235 shoveling snow!

How much money did Rafi earn altogether?Rafi is working odd jobs to save enough money to buy a new phone. Last month, he earned $125 raking leaves for his neighbors. This month, there was a big snowstorm. Rafi earned $235 shoveling snow!

How much money did Rafi earn altogether?

Explanation:lm

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Flura [38]

Answer:

2 one is the correct one

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5 0
3 years ago
Does iron always have a charge of 2+ when it forms an ion
Usimov [2.4K]

Answer:

Roman numeral notation indicates charge of ion when element commonly forms more than one ion. For example, iron(II) has a 2+ charge; iron(III) a 3+ charge.

Explanation:

8 0
3 years ago
what is the pressure, in atmospheres, of 2.97 mol h2 gas if it has a volume of 73 liters when the temperature is 298 k? 0.50 atm
Triss [41]
P x V = n x R x T

P x 73 = 2.97 x 0.082 x 298

P x 73 = 72.57492

P = 72.57492 / 73

P = 1.0 atm

hope this helps!




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3 years ago
Which of these pairs would form an ionic bond?<br><br><br> K and Br
ZanzabumX [31]

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5 0
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Most of the X-rays are absorbed in which layer of Earth's atmosphere?
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