Which of the following isotopes have 8 neutrons in the nucleus? O-15 O-17 C-13 C-14

Chemistry

2 answers:

kirza4 [7]3 years ago

6 0

Answer:

The answer to this question would be C-14

Explanation:

To determine this value simply take the mass number for each of these elements and figure out the one that gives you the value of 8 neutrons by subtracting it by the number of protons that there are for each element. You will find that only the last one is the correct choice.

antoniya [11.8K]3 years ago

3 0

Answer:

C-14 have 8 neutrons in the nucleus.

Carbon atoms with 8 neutrons have an atomic mass of 14 (6 protons + 8 neutrons = 14), so this isotope of carbon is named carbon-14.

hope it helps :)

Explanation:

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ziro4ka [17]

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8. A 220 mL sample of helium gas is in a cylinder with a movable piston at 105 kPa and 275K. The piston

Harrizon [31]

The sample has a new pressure of 274kPa. If at 105 kPa and 275K, a 220 mL sample of helium gas is contained in a cylinder with a moving piston. The sample is pushed till it has a 95.0 mL volume and 310K .

The macroscopic characteristics of ideal gases are related by the ideal gas law (PV = nRT). A gas is considered to be perfect if its particles (a) do not interact with one another and (b) occupy no space (have no volume). Where P= pressure V= volume and T = temperature.

From ideal gas equation

P₁V₁/T₁ =P₂V₂/T₂

105×220÷275 = P₂ ×95÷310

P₂= (105×220×310)÷(275×95)

P2= 7161000/26125

P2 = 274.105 kPa

Hence, the new pressure of helium gas is 274kPa

To know more about Ideas gas equation

brainly.com/question/28837405

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1 year ago