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2 years ago

What is the scientific name of hydrogen -2 and hydrogen -3.

Chemistry

1 answer:

Evgen [1.6K]2 years ago

6 0

Answer:

Hydrogen 2 is called deuterium, Hydrogen 3 is called Tritium

Explanation:

Hydrogen is the only element whose isotopes have different names in common use today: the 2H (or hydrogen-2) isotope is deuterium and the 3H (or hydrogen-3) isotope is tritium.

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An ideal gas sealed in a rigid 4.86-L cylinder, initially at pressure Pi=10.90 atm, is cooled until the pressure in the cylinder

seraphim [82]

Answer:

$\Delta H=-11897J$

Explanation:

Hello,

In this case, it is widely known that for isochoric processes, the change in the enthalpy is computed by:

$\Delta H=\Delta U+V\Delta P$

Whereas the change in the internal energy is computed by:

$\Delta U=nCv\Delta T$

So we compute the initial and final temperatures for one mole of the ideal gas:

$T_1= \frac{P_1V}{nR}=\frac{10.90atm*4.86L}{0.082*n}=\frac{646.02K }{n} \\\\T_2= \frac{P_2V}{nR}=\frac{1.24atm*4.86L}{0.082*n}=\frac{73.49K }{n}$

Next, the change in the internal energy, since the volume-constant specific heat could be assumed as ³/₂R:

$\Delta U=1mol*\frac{3}{2} (8.314\frac{J}{mol*K} )*(73.49K-646.02K )=-7140J$

Then, the volume-pressure product in Joules:

$V\Delta P=4.86L*\frac{1m^3}{1000L} *(1.24atm-10.90atm)*\frac{101325Pa}{1atm} \\\\V\Delta P=-4756.96J$

Finally, the change in the enthalpy for the process:

$\Delta H=-7140J-4757J\\\\\Delta H=-11897J$

Best regards.

7 0

3 years ago

Identify the choice that best completes the statement or answers the question.

DanielleElmas [232]

The answer would be decomposers

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3 years ago

A hot metal plate at 150°C has been placed in air at room temperature. Which event would most likely take place over the next fe

Oksi-84 [34.3K]

Answer:

d. The air molecules that are surrounding the metal will speed up, and the molecules in the metal will slow down.

Explanation:

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2 years ago

A student has a sample of aluminum that has a mass of 27 g and a volume of 10cm3. What is the density of aluminum

Anestetic [448]

Answer:

270 g/cm^3

Explanation:

d = mv

d = 27 g × 10cm^3

d = 270 g/cm^3

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2 years ago

What is sodium Critate

Alla [95]

Sodium citrate is obtained by mixing citric acid with hydroxide or some other sodium salt.so sodium citrate is by definition is a type of salt

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3 years ago

What is the scientific name of hydrogen -2 and hydrogen -3.​

What is the scientific name of hydrogen -2 and hydrogen -3.