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Finger [1]
3 years ago
13

Cameron is a doctor treating a cancer patient, Billy is an archeologist dating a vase, and Isabelle is a geologist dating a laye

r of soil. Which isotopes would each person most likely use?
Cameron would use carbon-14, Billy would use cobalt-60 (which releases gamma rays), and Isabelle would use uranium-238.
Cameron would use cobalt-60 (which releases gamma rays), Billy would use carbon-14, and Isabelle would use uranium-238.
Cameron would use uranium-238, Billy would use carbon-14, and Isabelle would use cobalt-60 (which releases gamma rays).
Cameron would use cobalt-60 (which releases gamma rays), Billy would use uranium-238, and Isabelle would use carbon-14.
Chemistry
2 answers:
aliina [53]3 years ago
7 0
Let me explain it to you like this: Cobalt 60 is used for something called raadioisitope therapy for cancer. Uranium 238 is used to date the soil. And Carbon 14 is used for archaeologists. So the correct answer is the second one
vlada-n [284]3 years ago
6 0

Answer:

B

Explanation:

Cameron would use cobalt-60 (which releases gamma rays), Billy would use carbon-14, and Isabelle would use uranium-238.

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4 0
3 years ago
If the container is closed and the ethanol is allowed to reach equilibrium with its vapor, how many grams of liquid ethanol rema
SVETLANKA909090 [29]

Explanation:

Let us assume that the given data is as follows.

        V = 3.10 L,        T = 19^{o}C = (19 + 273)K = 292 K

       P = 40 torr    (1 atm = 760 torr)

So,     P = \frac{40 torr}{760 torr} \times 1 atm

             = 0.053 atm

          n = ?

According to the ideal gas equation, PV = nRT.

Putting the given values into the above equation to calculate the value of n as follows.

                 PV = nRT

   0.053 atm \times 3.10 L = n \times 0.0821 L atm/mol K \times 292 K

                 0.1643 = n \times 23.97

                    n = 6.85 \times 10^{-3}

It is known that molar mass of ethanol is 46 g/mol. Hence, calculate its mass as follows.

               No. of moles = \frac{mass}{\text{molar mass}}

                 6.85 \times 10^{-3} = \frac{mass}{46 g/mol}  

                    mass = 315.1 \times 10^{-3} g

                              = 0.315 g

Thus, we can conclude that the mass of liquid ethanol is 0.315 g.

4 0
3 years ago
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