How many moles of Na are needed to produce moles of NaCl in the reaction below
2 Na + Cl2-->> 2 NaCl

A. 2 moles
B. 8 moles
C. 1 mole
D. 4 moles

What is the polyatamic ion of borate

Voltaic cells produce a positive overall charge. what does this indicate? a. the reaction is likely to be endothermic. b. the reaction is spontaneous. c. the reaction is not likely to occur. d. the reaction is not spontaneous.

Abeaker with 2.00×102 ml of an acetic acid buffer with a ph of 5.000 is sitting on a benchtop. the total molarity of acid and conjugate base in this buffer is 0.100 m. a student adds 4.70 ml of a 0.360 m hcl solution to the beaker. how much will the ph change? the pka of acetic acid is 4.740.