M = 81.50g, mm = m/n
n =???
PV = nRT --> n = PV/RT
n = (1.75)(4.92)/(.0821)(307)
n = 8.61/25.20 =.342
--> mm = m/n = 81.5/.342 = 238.58
Response:
The mass percentage of a solution comprising 7.6 grams of sucrose and 83.4 grams of water equals 8.351 %.
Details:
Provided data:
Sucrose mass = 7.6 grams
Water mass = 83.4 grams
In this scenario, sucrose acts as the solute, while water is the solvent.
The calculation for mass percent of a solution is done using the following formula:
Mass percent = (Mass of Solute/Mass of Solution)(100)
As sucrose is the solute, the mass equals 7.6 grams.
The total mass of the solution, which includes both sucrose and water, comes out to:
Total mass = 7.6 grams + 83.4 grams = 91 grams
Therefore, applying the values gives mass percent = (7.6/91)(100) = 8.351 %.
Answer:
The specific gravity of the saturated solution is 2
Explanation:
Specific gravity represents the ratio of the density of a solution, in this case, a saturated potassium iodide (KI) solution, to the density of water. Assuming the density of water is 1:
Specific gravity = Density
Density itself is defined as the mass divided by volume.
In 100mL of water, the mass of dissolve-able KI is:
100mL * (1g KI / 0.7mL) = 143g of KI
This indicates that all 100g of KI dissolves (Mass solute)
With 100mL of water corresponding to a mass of 100g (Mass solvent)
The overall mass of the solution computes to 100g + 100g = 200g
In a volume of 100mL, the solution's density is:
200g / 100mL = 2g/mL.
Specific gravity is a dimensionless quantity, thus the specific gravity of the saturated solution is 2
Answer:
She will likely notice an increase in tire pressure.
Explanation:
According to the ideal gas law, pressure is directly related to temperature. Therefore, as temperature rises, so does pressure:
PV = nRT (Where P denotes pressure, V is volume, n represents moles, R is the ideal gas constant, and T signifies temperature).
Temperature indicates the average kinetic energy among the gas molecules. Thus, when the temperature goes up, the kinetic energy increases accordingly, leading gas molecules to speed up and collide more frequently with each other and with the tire walls. These impacts are more forceful due to the increased speed.
Consequently, the pressure escalates because it results from the collisions of gas molecules against the tire’s walls.
To determine the mass of salt using Avogadro's number, we find the moles of NaCl: 8.24x10²² molecules NaCl divided by 6.022x10²³ molecules NaCl per mole gives 0.14 mole NaCl. We can convert moles to grams of NaCl by multiplying 0.14 mole by 58g NaCl per mole, yielding a total of 8.12 g NaCl.
