Please help :(
A. Calculate the number of moles of solute in
53.39 mL of 0.1835 M K2Cr2O7 (aq)
moles of solute: ?
B. How many grams of solute are present in
215 mL of 0.740 M KBr ?
C. If 8.34 g of CuNO3 is dissolved in water to make a .610 M solution, what is the volume of the solution in milliliters?
D. Complete the equation for the dissociation of the electrolyte
NaCl(aq) -Omit water from the equation because it is understood to be present.
E. Classify these substances. More than one answer may apply in each case.
N2, O2, N2O
solution, homogeneous mixture, heterogeneous mixture, element, pure substance, and compound