(05.04 LC) Which of the following is a valid mole ratio from the balanced equation 2Fe2O3 + 3C — 4Fe + 3C02? (4 points)
a.
Select one:
4 mol C
3 mol Fe
2 mol Fe, O,
b.
4 mol C
3 mol C
C
4 mol CO2
4 mol Fe
d.
3 mol CO2

List the two type of transporst that the cell in orde to transport molecules acroos the membrane

You have 125g of a certain seasoning and are told that it contains 76.0 g of salt what is the percentage of salt by mass in this seasoning

The atomic radius of sodium is 186 pm and of chlorine is 100 pm. the ionic radius for na+ is 102 pm and for cl– is 181 pm. in going from na to cl in period 3, why does the atomic radius decrease while the ionic radius increases? a. the inner electrons in the sodium cation shield its valence electrons more effectively than the inner electrons in the chloride anion do. b. the inner electrons shield the valence electrons more effectively in the chlorine atom than in the chloride anion. c. the outermost electrons in chloride experience a smaller effective nuclear charge than those in the sodium cation do. d. the outermost electrons in chloride experience a larger effective nuclear charge than those in the sodium cation do. e. monatomic ions are bigger than the atoms from which they are formed.