The moles can be defined as the mass of the substance with respect to molar mass. The moles of potassium nitrate is 1 mol.
<h3>How to calculate moles of a substance?</h3>
The moles of a compound can be calculated from:
![\rm Moles=\dfrac{Mass}{Molar\;mass}](https://tex.z-dn.net/?f=%5Crm%20Moles%3D%5Cdfrac%7BMass%7D%7BMolar%5C%3Bmass%7D)
The molarity can be defined as the moles of solute in a liter of solution.
The molarity can be expressed as:
![\rm Molarity=\dfrac{Moles\;\times\;1000}{Volume\;(mL)}](https://tex.z-dn.net/?f=%5Crm%20Molarity%3D%5Cdfrac%7BMoles%5C%3B%5Ctimes%5C%3B1000%7D%7BVolume%5C%3B%28mL%29%7D)
The molarity of potassium nitrate solution is 2 M, and the volume is 500 mL.
The moles of potassium nitrate is given as:
![\rm 2\;M=\dfrac{Moles\;\times\;1000}{500\;mL}\\ Moles=\dfrac{2\;\times\;500}{1000}\;mol\\ Moles=1\;mol](https://tex.z-dn.net/?f=%5Crm%202%5C%3BM%3D%5Cdfrac%7BMoles%5C%3B%5Ctimes%5C%3B1000%7D%7B500%5C%3BmL%7D%5C%5C%20Moles%3D%5Cdfrac%7B2%5C%3B%5Ctimes%5C%3B500%7D%7B1000%7D%5C%3Bmol%5C%5C%20Moles%3D1%5C%3Bmol)
The moles of potassium nitrate in 2 M, 500 mL solution are 1 mol.
Learn more about moles, here:
brainly.com/question/15209553
Answer:
the answer is A An atomic orbital can only hold a maximum of 2 electrons, each with opposite spins
Explanation:
Answer:
Formation. When the solar system settled into its current layout about 4.5 billion years ago, Earth formed when gravity pulled swirling gas and dust in to become the third planet from the Sun. Like its fellow terrestrial planets, Earth has a central core, a rocky mantle and a solid crust.
Answer:
0.2349 moles, 10.3356 g
Explanation:
The given reaction is :
![C_6H_{14}+O_2\rightarrow CO_2 + H_2O](https://tex.z-dn.net/?f=C_6H_%7B14%7D%2BO_2%5Crightarrow%20CO_2%20%2B%20H_2O)
The balanced reaction by equating the same number of each atom both side is :
![2C_6H_{14}+19O_2\rightarrow 12CO_2 + 14H_2O](https://tex.z-dn.net/?f=2C_6H_%7B14%7D%2B19O_2%5Crightarrow%2012CO_2%20%2B%2014H_2O)
Given that :
Amount of oxygen gas = 11.9 g
Molar mass of oxygen gas = 32 g/mol
The formula for the calculation of moles is shown below:
Thus, moles are:
From the reaction,
19 moles of oxygen gas on reaction forms 12 moles of carbon dioxide
Also,
1 mole of oxygen gas on reaction forms 12/19 moles of carbon dioxide
So,
0.3719 moles of zinc on reaction forms
mole of carbon dioxide
<u>Moles of carbon dioxide formed = 0.2349 moles</u>
Mass of carbon dioxide = moles×Molar mass
Molar mass of carbon dioxide = 44 g/mol
<u>Mass of carbon dioxide formed = 0.2349 ×44 g = 10.3356 g</u>