Answer !
a serving of drinking water( h2o )has an approximate mass of 255 g. water has a specific heat capacity (csp) of 4.184 j/g×°c. what is the total energy needed to heat 255-grams of water from 20.0°c to 100.0°c?

Earth's axis of rotation is tilted at an angle of 23.5 degrees. what is one change you would see on earth if its axis was not tilted?

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.

Abaker touches a pie right after taking it out of the oven. which statement best explains why the pie feels hot?