A balloon is filled with 35.0 L of helium in the morning when the temperature is 20.00 Celsius by noon the temperature has risen to 45.00 Celsius what is the new volume of the balloon

As a barometer rises, what kind of weather can be expected

Molarity is most often used when the solute is a solid, and the solvent is a solid. True or false

Identify the main source of energy used by most organisms

Delta G = - nFE (How do you find n when different number of electrons) One reaction transfers 3e, and the other 2e, Would n be - 6?

Which of the following would you expect to form an ionic bond when combined? a. K + and H+ b. Ba2 + and CI- c. Se2 - and F- d. Si and O

According to Newtons's first law, which characteristic of a moving object would remain constant if there were no other force of acting of it? A. Size B. Mass C. Shape D. Speed

Standard reduction potentials are 1.455 V for the PbO2 (s) / Pb (s) couple, 1.82 V for Co3 (aq) / Co2 (aq), 3.06 V for F2 (g) / HF (aq), 1.07 V for Br2 (l) / Br - (aq), and 1.77 V for H2O2 (aq) / H2O (l).

Which compound is inorganic? a. glucose (c6hl2o6) b. carbon dioxide (co2) c. ethane (c2h6) d. stearic acid (cl8h36o2) ?

Pure aluminum metal has a density of 2.70 g/cm

A 0.250-g chunk of sodium metal is cautiously dropped into a mixture of 50.0 g of water and 50.0 g of ice, both at 08C. The reaction is 2Na (s) 1 2H2O (l) 88n 2NaOH (aq) 1 H2 (g) DH 5 2368 kJ