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A reverse osmosis unit is used to obtain drinkable water from a source that contains 0.570 g NaCl per liter. What is the minimum pressure (in torr) that must be applied across the semipermeable membrane to obtain water? Assume room temperature or about 298 K.
ammonia is both a donor and an acceptor of hydrogen in hydrogen-bond formation. draw a diagram showing the hydrogen
In which of the following would the bonding be weakened with the addition of an electron to form the negative molecular ion?
A 0.150- M solution of chloroacetic acid (HC2H2ClO2) has a pH of 1.86. What is the value of Ka for this acid and the percent ionization?
Explain the difference between the chlorides in [Co(NH3)6]Cl3 and [Co(NH3)5Cl]Cl2. Is the measured absorption spectrum for these two compounds consistent
Assuming no energy is transferred to or from the surroundings, calculate the final temperature of the water after all the ice melts.
What volume in milliliters of a 0.0992 M NaOH solution is required to reach the endpoint in the complete titration of a 15.0 mL sample of 0.107 M H3PO4?
how many moles of Cu2O can be produced from the reaction of 0.66 mol Cu with 0.40 mol O2?
Draw the product that is formed when the compound shown below is treated with an excess of HCl. Draw only the organic ion.
Perform the various calculations with your collected data as listed in the lab's observations section and compare your results with the literature values by calculating your percent error for each of the metals.
In a basic aqueous solution, chloromethane undergoes a substitution reaction in which Cl- is replaced by OH-: CH3Cl(aq)+OH-(aq) CH3OH(aq) + Cl-(aq)
If the half-life of a first-order reaction is 4.609 hours what is the instantaneous rate of the reaction in M/day when the concentration of A equals 0.251 M?
not enough air is pumped into a raft to completely fill it out. the atmospheric pressure is 14.7 psi. what is the pressure of the air inside the raft?
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