The temperature of a 46.9 L sample of NO is changed, causing a change in pressure from 647.7 kPa to 1,090.7 kPa. If its new temperature is 215.1 K and its new volume is 70.2 L, what was its original temperature in kelvins?

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 type of matter is made of only one kind of atom

Aconcentrated solution of ammonia is 14.8m and has a density of 0.899g/l. what is the concentration of ammonia in this solution in weight percent (%w/w)?