When mixed with equal volumes, which of the following solutions would function as an effective pH buffer? a. 0.250 MNaCl and 0.250 MHCI
b. 0.250 MNaClO and 0.250 MHCIO
c. 0.250 MNaOH and 0.250 MHCI
d. 0.250 MNH4Cl and 0.250 MNH3
e. 0.250 MHN03 and 0.250 MNaNO3

When determining the shape of a molecule, it is important to draw a lewis dot structure first in order to see the total number a. electrons within the moleculeb. bonding and unshared pairs around central atomc. unshared pair within the molecule( i really need it )

If a 12-v battery is connected to a circuit that has a current of 3.0 a, what is the total resistance in the circuit? 36 ohms 4 ohms 0.25 ohms

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.