When a ph probe is inserted into a solution containing the chloride ion it is neutral. what is the ph of a solution containing the fluoride ion? view available hint(s) when a ph probe is inserted into a solution containing the chloride ion it is neutral. what is the ph of a solution containing the fluoride ion? the solution will be weakly acidic the solution will be weakly basic the solution will be strongly basic the solution will be neutral. the solution will be strongly acidic. submit part b the ka of nh4+ is 5.6 × 10−10. the kb of cn− is 2 × 10−5. the ph of a salt solution of nh4cn would be: view available hint(s) the of is . the of is . the ph of a salt solution of would be: less than 7 because nh4+ is a stronger acid than cn− is a base. greater than 7 because cn− is a stronger base than nh4+ is an acid less than 7 because cn− is a stronger base than nh4+ is an acid. greater than 7 because nh4+ is a stronger acid than cn− is a base. submit provide feedback

first, consult an activity series chart to determine if al is more reactive than fe. it is, so it will replace the fe. now, one can continue with the problem.

next, make sure you have a correctly balanced equation.

3feo + 2al ==> 3fe + al2o3

now, determine which reactant (feo or al) is in limiting supply.

moles feo present = 125 g x 1 mole/71.8 g = 1.74 moles

moles al present = 25.0 g x 1 mole/26.98 g = 0.927 moles

since from the balanced equation, it take 3 mol feo for every 2 mol al, al will be limiting.

you can determine this simply by dividing moles of each by their coefficient in the balanced equation. for example: 1.74/3 = 0.58 and 0.927/2 = 0.464. al is less, so it is limiting.

finally, using the stoichiometry in the balanced eq. determine mass of fe that can be produced from 0.927 moles of al.

0.927 moles al x 3 moles fe/2 moles al x 55.8 g/mole = 77.6 g

answer; protein;

conduction is the transfer of thermal energy (heat in transfer) due to collisions between the molecules in the object. collisions between adjacent atoms and molecules transfer kinetic energy from the warmer to the cooler object. the objects must be in physical contact.

no, the red giant is the hottest with 2.00.000.000 degrees celsius. while the white dwarf only 25,000 degrees celsius.