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The free energy generated by ion movement in the cell is used by the cell to do work. Compute the minimum number of millimoles of sodium that would be needed to pump one millimole of calcium ions if the following concentrations were present in the cell. Assume the temperature to be 370C and recall that R=0.008314 kJ/mol-K.
Na+ (aq, 86 mM) -> Na+ (aq, 7.00 mM)
Ca2+ (aq, 18mM) -> Ca2+ (aq, 9.50 x 102 mM)
"Air" bags for automobiles are inflated during a collision by the explosion of sodium azide, NaN3. The equation for the decomposition is 2NaN3(s) ? 2Na(s) + 3N2(g). What mass of sodium azide would be needed to inflate a 9.8-L bag to a pressure of 2...
Problem- If it takes 4.67 times as long for a particular gas to effuse as it takes hydrogen under the same conditions, what is the molecular weight of the gas
A copper refinery produces a copper ingot weighing 171 lb. If the copper is drawn into wire whose diameter is 8.25 mm, how many feet of copper can be obtained from the ingot?
Phosphorus pentachloride decomposes to phosphorus trichloride and chlorine gas at elevated temperatures by the following reaction: PCl5(g) PCl3(g) + Cl2(g). If Kc = 1.8 at 250°C, what is the value of Kp at the same temperature
7.65.50 mL of 0.161 M HF is titrated with 0.1200 M NaOH. What is the pH after 65.50 mL of base have been added? (Ka for HF is 6.8 x 10-4)
Cynthia lives 5.0 miles from grossmont college. Assuming that there are no traffic signals , how long would it take in minutes her to reach school if she drives35 MPH. If cynthia oversleeps and drives 50 MPH how long will it take?
Normalize the wave function x(a - x) y(b - y) over the range 0
If the vapor pressure of the pure liquids at 20.0deg C are 227 torrand 31.7 torr respectively, what will be the total vapor pressure of the mixture? Also, what will be the mole fraction of each compound in the vapor?
The molar heat capacity of silver is 25.35J/mol * °C . How much energy would it take to raise the temperature of 9.80 of silver by 17.4°C
The specific heat capacity of silver is 0.24 J/°C · g. Calculate the energy required to raise the temperature of 120.0 g Ag from 273 K to 305 K
Given the following substitution reaction, what would the effect be of changing the solvent from CH3OH to (CH3)2S=O? CH3(CH2)5Br + NaOH as it goes to CH3(CH2)5OH + Br-
Molar mass has the units of grams/mole. Molar mass serves as a conversion factor between numbers of moles and mass. If you know how many moles you have, you can calculate their mass; if you know the mass of a sample, you can calculate the number o..
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