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3 years ago

An isotope of radon has 86 protons and 137 neutrons. What is the mass number of this isotope?

Chemistry

1 answer:

Murrr4er [49]3 years ago

5 0

86 + 137 = 223
protons + neutrons = mass

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Steam reforming of methane ( CH4 ) produces "synthesis gas," a mixture of carbon monoxide gas and hydrogen gas, which is the sta

sertanlavr [38]

Answer: The pressure equilibrium constant for the reaction is $4.5\times 10^0$

Explanation:

We are given:

Initial partial pressure of methane = 0.60 atm

Initial partial pressure of water vapor = 2.6 atm

Equilibrium partial pressure of hydrogen gas = 1.4 atm

The chemical equation for the reaction of methane gas and water vapor follows:

$CH_4+H_2O\rightleftharpoons CO+3H_2$

Initial: 0.60 2.6

At eqllm: 0.60-x 2.6-x x 3x

Evaluating the value of 'x':

$\Rightarrow 3x=1.4\\\\x=0.467$

So, equilibrium partial pressure of methane gas = (0.60 - x) = [0.60 - 0.467] = 0.133 atm

Equilibrium partial pressure of water vapor = (2.6 - x) = [2.6 - 0.467] = 2.133 atm

Equilibrium partial pressure of carbon monoxide gas = x = 0.467 atm

The expression of $K_p$ for above equation follows:

$K_p=\frac{p_{CO}\times (p_{H_2})^3}{p_{CH_4}\times p_{H_2O}}$

Putting values in above equation, we get:

$K_p=\frac{0.467\times (1.4)^3}{0.133\times 2.133}\\\\K_p=4.517\times 10^0$

Hence, the pressure equilibrium constant for the reaction is $4.5\times 10^0$

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3 years ago

What type of potential energy do fuels contain

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Kinetic energy maybe or something

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. From left to right across a period in the periodic table, elements become less ___________ and more ______________ in their pr

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A chemist plans to use 435.0 grams of ammonium nitrate ion a reaction. How many moles of the compound is this?

AURORKA [14]

Ammonium Nitrate has the formula NH4NO3, and has a formula weight of 80.043 grams/mole. We can convert the amount in the problem to moles using this conversion factor. Divide 435 by 80.043 to find the number of moles.

435/80.043 = 5.435

This amount of Ammonium Nitrate contains 5.44 moles of substance, adjusted for significant figures.

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3 years ago

What is Photosynthesis?

Bezzdna [24]

Answer:

Photosynthesis is the process in which plants generate their own food by influence of the green pigment ( chlorophyll )

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