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Both ethylene glycol and water are liquids. How do you know which one is the solvent and which one is the solute? Explain your answe
1. The vapor pressure of pure water at 110oC is 1070 torr. A solution of ethylene glycol and water has a vapor pressure of 1.10 atm at the same temperature. What is the mole fraction of ethylene glycol in the solution?
Why is scarcity a fundamental problem in economics
Explain four reasons why the study of Economics is important to society.
: Please provide the appropriate right answer/ answers from the choices given below and provide an explanation for your choice, as well:
I. Which of the following phenomena do not affect the polarization of an electrode?
a. Diffusion of an reactant to the electrode surface
b. Diffusion of the product from the electrode surface
c. Convective limitations in the cell
d. Standard Cell Potential of the redox couple
e. Significant Activation barrier to the charge transfer
a survey company, sws, claims that a majority of gen z voters prefer leni robredo as the next president over that of its main competitor, bongbong marcos. to test this claim 500 randomly selected people were surveyed. among them, 270 leni, 211 bbm, and 1919 could not make up their minds. determine whether there is sufficient evidence, at the 5% level of significance, to support the sws survey claim against the default that the population is evenly split in its preference. Show your calculations.
A student eat a dinner containing 8.0×10^6J of energy and wishes to lift an object in a gym of 60kg .How mang times will he lift this object to expand this much energy if he lift this object in a distance of 2.0m
A Diesel cycle has a compression ratio of 16. The lowest and highest temperature of the
cycle are 300K and 1880K respectively. The pressure at the beginning of compression is 1 Bar.
Calculate:
a) The pressure and temperatures at all the other points of the cycle.
b) Net work output.
c) Efficiency of the cycle.
A solution of hydrochloric acid in water is 60.0% HCl and 40% water, H2O, by weight. The solution has a density of 1.19 g/mL. What is the
b. Molarity of the water (with hydrochloric acid as the solvent)
c. Molality of water in hydrochloric acid?
d. mole fraction of hydrochloric acid?
e. mole fraction of water?
Neutron stars are some of the densest objects in the universe. They form during supernova ex-
plosions and are very small compared to other astronomical objects. You can assume 5 x 10^17
kg/m3 as the average density of a neutron star. The Earth has a total mass of about 5.97 x 10^24 kg.
What would be the diameter of the Earth if it had the density of a neutron star?
Please answer with explanation.
#340153 on Dec 2023