The strands of DNA are held together in the double helix by intermolecular attractions between atoms on one strand and nitrogen or oxygen atoms on the other strand.

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?

Estimate the molar mass of the gas that effuses at 1.6 times the effusion rate of carbon dioxide.

what is your question? collegechemistry 5+3 pts in november 1987, a massive iceberg broke loose from the antartic ice mass and floated free in the ocean. the chunk of ice was estimated to be 98 mi long, 25 mi wide, and 750 ft thick. a typical backyard swimming pool contains about 24,000 gallons of water. how many of these pools could you fill from the water in this iceberg? (assume the iceberg is a rectangular solid of the above dimensions and consists of water only). express answer in scientific notation.