What additions must you make to the cell for it to generate a standard emf? Select all that apply. 1. You should add enough salt containing A2+ into the glass containing the electrode B(s) to produce a 1 M A2+ solution.
2. You should add enough salt containing B2+ into the glass containing the electrode B(s) to produce a 1 M B solution.
3. You should apply the initial emf to the electrodes.
4. You should add the salt bridge.
5. You should add enough salt containing A2+ into the glass containing the electrode A(s) to produce a 1 M A2 solution.
6. You should add enough salt containing B2+ into the glass containing the electrode A(s) to produce a 1 M B2+ solution.

*will mark you brainliest + 15 points ** why does the equilibrium of a system shift when the pressure is increased? a. to maximize the stress on the system b. to stop restoring equilibrium to the system c. to increase the total moles of gas in the system d. to decrease the total moles of gas in the system

Modern weaponry has increased the number of deaths in wars and violent conflicts.

Since the gas in your graduated cylinder is a mixture of butane and water vapor, you must determine the partial pressure of the butane, pbutane, alone. to do this, consult a reference and record the partial pressure of the water vapor, pwater, at the temperature you recorded. use the following formula to compute the partial pressure of the butane. pbutane = atmosphere - pwater use the following combined gas law formula and compute the volume that the butane sample will occupy at stp. (hint: convert both temperatures to kelvin.) pbutane x voriginal = pstandard x vfinal troom tstandard use the following ratio and proportion formula to determine the mass of butane needed to occupy a volume of 22.4 l at stp. grams of butane you used “x” grams of butane ml of butane corrected to stp = 22,400 ml compute the theoretical molar mass of butane based on its formula and the atomic masses on the periodic table. compare your experimental results from #3 to the theoretical value of #4, computing a percent error of your findings using this formula: % error = measured value - accepted value x 100 accepted value use the following ratio and proportion formula to determine the mass of butane needed to occupy a volume of 22.4 l at stp. need asap