Answer:
0.683 mol
46.3 g
Explanation:
There is some info missing. I think this is the original question.
<em>Boron trifluoride gas is collected at 21.0 °C in an evacuated flask with a measured volume of 50.0 L. When all the gas has been collected, the pressure in the flask is measured to be 0.330 atm. Calculate the mass and number of moles of boron trifluoride gas that were collected. Round your answer to 3 significant digits.</em>
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Step 1: Convert the temperature to the Kelvin scale
We will use the following expression.
K = °C + 273.15
K = 21.0°C + 273.15
K = 294.2 K
Step 2: Calculate the moles of boron trifluoride gas
We will use the ideal gas equation.
Step 3: Calculate the mass of boron trifluoride gas
The molar mass of BF₃ is 67.81 g/mol.
With the<u> balanced reaction</u> we're able to use the<em> stoichiometric ratios </em>in order to solve each of the questions:
2C₁₂H₄Cl₆ + 23O₂ + 2H₂O → 24CO₂ + 12HCl
a) 10.0 mol O₂ * = 0.870 mol H₂O
b) When we work with mass, we use the <em>molecular weight</em>:
15.2 mol H₂O * 3324.24 g HCl
c) 76.5 g HCl * 50.37 mol CO₂
d) 100.25 g CO₂ * =68.48 g C₁₂H₄Cl₆
e) 2.5 kg C₁₂H₄Cl₆ = 2500 g C₁₂H₄Cl₆
2500 g C₁₂H₄Cl₆ * 1515.80 g HCl
Answer:
It's basically a positive charged atom.
Explanation:
Answer:
B
Explanation:
The particles are bound to each other and they vibrate at an almost undetectable rate.
<span>Carrying capacity is the number of organisms an ecosystem can support. It is the maximum size of a population that can survive in the ecosystem. If the animals reach the carrying capacity, the population may crash. As the consequence, the number of animals will decrease due to predators or diseases.</span>