A bulk tanker truck carrying 5,000 gallon of methyl tertiary-butyl ether (MTBE), CASS#163-04-4, has collided with a bridge structure over a small river near a community. THE MTBE tank has ruptured, releasing an unknown amount of gasoline additive into the river about 1/4 mile upstream from the town's drinking water source intake. The following data apply to MTBE:

Oral RfD 0.005 mg/Kg*day
Inhalation RfD 0.143 mg/Kg*day
Manufacturer's suggested exposure limit 600 mg/m^3 (200 ppm)
Vapor pressure 25 °C 245 mm Hg
Density at 4 °C 0.741 g/cm^3

It is proposed to treat the towns water supply to remove mtbe to an acceptable concentration. Assume a 365 day exposure duration and complete absorption into the bod. The maximun mtbe concentration in the drinking water to proctet a 15 kg child population consuming 1.0L/day of water is most nearly:

a. 0.00075
b. 0.0075
c. 0,075
d. 0.75

Did the proton move into a region of higher potential or lower potential? did the proton move into a region of higher potential or lower potential? because the proton is a negative charge and it accelerates as it travels, it must be moving from a region of higher potential to a region of lower potential.because the proton is a negative charge and it accelerates as it travels, it must be moving from a region of lower potential to a region of higher potential.because the proton is a positive charge and it slows down as it travels, it must be moving from a region of higher potential to a region of lower potential.because the proton is a positive charge and it slows down as it travels, it must be moving from a region of lower potential to a region of higher potential.request answerpart bwhat was the potential difference that stopped the proton? express your answer with the appropriate units.î”v î” v = nothingnothingrequest answerpart cwhat was the initial kinetic energy of the proton, in electron volts? express your answer in electron volts.ki k i = nothing ev request answerprovide feedback

Atotal charge of –6.50 µc is uniformly distributed within a sphere that has a radius of 0.150 m. what is the magnitude and direction of the electric field at 0.300 m from the surface of the sphere? a) 2.89 × 105 n/c, radially inward b) 6.49 × 105 n/c, radially outward c) 4.69 × 105 n/c, radially inward d) 9.38 × 105 n/c, radially outward e) 1.30 × 106 n/c, radially inward

At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid