Answer:
0.254 M
Explanation:
If the formula mass of sugar is 342.3 g/mol, and there are 65.3 g, then there are 65.3/342.3=0.190768 mol.
Also, 750 mL = 0.750 L.
molarity = (moles of solute)/(liters of solution)
molarity = 0.190768/0.750 = <u>0.254</u><u> </u><u>M</u>
Answer : The final pressure will be, 666.2 mmHg
Explanation :
Boyle's Law : It is defined as the pressure of the gas is inversely proportional to the volume of the gas at constant temperature and number of moles.
![P\propto \frac{1}{V}](https://tex.z-dn.net/?f=P%5Cpropto%20%5Cfrac%7B1%7D%7BV%7D)
or,
![P_1V_1=P_2V_2](https://tex.z-dn.net/?f=P_1V_1%3DP_2V_2)
where,
= initial pressure = 790 mmHg
= final pressure = ?
= initial volume = 101.2 mL
= final volume = 120 mL
Now put all the given values in the above equation, we get:
![790mmHg\times 101.2mL=P_2\times 120mL](https://tex.z-dn.net/?f=790mmHg%5Ctimes%20101.2mL%3DP_2%5Ctimes%20120mL)
![P_2=666.2mmHg](https://tex.z-dn.net/?f=P_2%3D666.2mmHg)
Therefore, the final pressure will be, 666.2 mmHg
Answer:
Computer, Microprocessor, Cell Phone, WWW, iPhone
Explanation:
i just did it and got it correct