PLEASE HELP ME!! A 28.0 g sample of N2 is in a rigid 4.50 L container at 32 °C. Calculate the pressure in the flask in torr.

What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5

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.

4. a 20-kg child is tossed up into the air by her parent. the child is 2 meters off the ground traveling 5 m/s. circle one: ke / gpe / both show your work for finding the values of each type of energy the object has: