Answer:
334.08 g
Explanation:
87 proof = 43.5%
in 1L of liquid there is 43.5% alcohol/ethanol
1L (43.5/100) = 0.435 L alcohol
we want density in g/L because that's the volume u have
density 0.798 g/mL = 798 g/L
multiply the volume of alcohol by its density to get grams
0.435 L(798 g/L) = 334.08 g
Answer: option 3. 5.46 L
Explanation:
1)<u> Data</u>
2) <u>Chemical principle</u>
<u />
- Combined law for ideal gases:
3) <u>Solution</u>
a) Conversion of units
The ideal gas law is valid for temperature in absolute units (Kelvin); hence, you have to converte °C to K.
- T₁ = 55.0 + 273.15 K = 328.15 K
- T₂ = 59.0 + 273.15 K = 332.15 K
b) Clear V₂ from the combined law of gases
c) Substitute values and compute
The answer must be reported with three significant figures, which is the number used for the data.
Answer: the gas will ocupy 5.46 liter at the new condictions of pressure and temperature.
Answer:
moon
Explanation:
the moon's gravitational pull generates tidal force which affects earth's tides
Answer:
Pressure will increase by the direct ratio of the volume change. Therefore, since volume changes from 145 to 80, pressure will go up by the ratio change 145÷80 times the original pressure 125 kPa. Sure, you can use the more complicated gas law equation PV = nRT but we are only varying volume so the question boils down to the change in one simple variable.
Putting them together we have: 145÷80 x 125 = 226.5625 or just 226 kPa since the accuracy of the figures and the equation are not great.
You have already gotten the balanced equation. And the ratio of mol number of reactants and production is the ratio of coefficient. So there is 6.4/8*11=8.8 mol oxygen needed. The mass is 8.8*32=281.6 g.