I need help ASAP What is the result of the following calculation? Record to the correct number of significant figures.
7.520 mL + 0.01509 mL = ?

a. 7.535 mL
b. 7.53 mL
c. 7.5351 ml
d. 7.53509 mL

Harvey kept a balloon with a volume of 348 milliliters at 25.0˚c inside a freezer for a night.  when he took it out, its new volume was 322 milliliters, but its pressure was the same.  if the final temperature of the balloon is the same as the freezer’s, what is the temperature of the freezer? the temperature of the freezer is  kelvins.

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same

When hydrochloric acid reacts with potassium hydroxide solution, the following reaction occurs. hcl (aq) + koh (aq) h2o (l) + kcl (aq) the reaction gives off heat energy, so it is an reaction.