HELPPP ASAP Given:
49.48 % C
5.19 %
28.85 % N
16.48 % 0
What is the empirical formula?
Enter the formula like this (N202)

Amixture with the same composition throughout is!

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.

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?