Assuming that STP = 0°C, and 1 atm pressure:
molar volume is 22.414 L = 22 414 cm^3
75 mL = 1*75/22 414 moles = 0.0033461 moles.
mole mass = 39.9 g --->
0.0033461 moles = 0.0033461*39.9 g = 0.13351 g <--- ans.
Answer:
a. looks to be directly proportional because as one goes up, so does the other.
b. the pressure can be found from the line you create with the x and y values. the pressure will be less than 726 since you can see the values go down as temp goes down.
if that website calculator does not have an equation creator, you'd have to use excel to calculate pressure at 0°c, there's an excel function thst would estimate the value.
since it's a test, this was the fastest info I could gather.
Answer : The molar mass of unknown substance is, 39.7 g/mol
Explanation : Given,
Mass of unknown substance = 9.56 g
Volume of solution = 100.0 mL
Molarity = 2.41 M
Molarity : It is defined as the number of moles of solute present in one liter of volume of solution.
Formula used :

Now put all the given values in this formula, we get:


Therefore, the molar mass of unknown substance is, 39.7 g/mol
Answer:
C
Explanation:
The other poster is wrong that is just a mixture, the sugar dissolved in tea tho is the right answer 90% sure
Answer: The Answer would be 10.
Explanation:
30 divided by 3 is 10.