Answer: The molarity is 0.25 M
Explanation:
Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.
![Molarity=\frac{n\times 1000}{V_s}](https://tex.z-dn.net/?f=Molarity%3D%5Cfrac%7Bn%5Ctimes%201000%7D%7BV_s%7D)
where,
n = moles of solute
= volume of solution in ml
moles of
= ![\frac{\text {given mass}}{\text {Molar mass}}=\frac{11g}{44g/mol}=0.25mol](https://tex.z-dn.net/?f=%5Cfrac%7B%5Ctext%20%7Bgiven%20mass%7D%7D%7B%5Ctext%20%7BMolar%20mass%7D%7D%3D%5Cfrac%7B11g%7D%7B44g%2Fmol%7D%3D0.25mol)
Now put all the given values in the formula of molality, we get
![Molarity=\frac{0.25\times 1000}{1000ml}](https://tex.z-dn.net/?f=Molarity%3D%5Cfrac%7B0.25%5Ctimes%201000%7D%7B1000ml%7D)
![Molarity=0.25M](https://tex.z-dn.net/?f=Molarity%3D0.25M)
Therefore, the molarity is 0.25 M
Convection currents are flowing fluid that is moving because there is a temperature or density difference within the material. ... A temperature difference leads to an energy transfer from an area of higher energy to one of lower energy. Convection is a heat transfer process.
Answer:
P = 0.75 atm
Explanation:
Using Boyle's law
Given ,
<u>For Bulb A</u>
Pressure = 190 torr
The conversion of P(torr) to P(atm) is shown below:
So,
Pressure = 190 / 760 atm = 0.25 atm
Volume = 200 mL
For Bulb B
Pressure = 1 atm
Volume = 400 mL
For Bulb C
Volume = 1.00 L = 1000 mL
Pressure = 75.994 kPa
The expression for the conversion of pressure in KiloPascal to pressure in atm is shown below:
P (kPa) =
P (atm)
75.994 kPa =
atm
Pressure = 0.75 atm
Also, Total volume, V = 200 + 400 + 1000 mL = 1600 mL
Using above equation as:
We get, Total pressure, P = 0.75 atm
Hello!
To solve this question, we need to use the
Avogadro's Number, which is a constant first discovered by
Amadeo Avogadro, an Italian scientist. He discovered that in a mole of a substance, there are
6,02*10²³ molecules. Using this relationship, we apply the following conversion factor:
![8,50* 10^{24}molecules* \frac{1 mol Na_2SO_3}{6,02* 10^{23}molecules}=14,12 molesNa_2SO_3](https://tex.z-dn.net/?f=8%2C50%2A%2010%5E%7B24%7Dmolecules%2A%20%5Cfrac%7B1%20mol%20Na_2SO_3%7D%7B6%2C02%2A%2010%5E%7B23%7Dmolecules%7D%3D14%2C12%20molesNa_2SO_3%20%20%20)
So, 8,50 * 10²⁴ molecules of Na₂SO₃ represent
14,12 moles of Na₂SO₃
Have a nice day!