This is a NASA image of two meteors falling to Earth during the Perseids meteor shower. If you like to watch such events, you know that astronomers can predict when during the year specific meteor showers will occur. Explain how astronomers can make these predictions. All of the choices EXCEPT one will help with your explanation.

If you have 5.25 grams of methane (ch4), how many grams of co2 will you produce ?

You mix the pks of succinic acid are 4.21 and 5.64. how many gramsa graduate student at sdsu wants to measure the activity of a particular enzyme at ph 4.0. to buffer her reaction, she will use a buffer system based on one of the acids listed below, which acid is most appropriate for the experiment? of monosodium succinate (fw = 140 g/mol) and disodium succinate (fw = 162 g/mol) must be added to 1 l of water to produce a solution with a ph 5.28 and a total solute concentration of 100 mm? (assume the total volume remains 1 liter, answer in grams monosodium succinate, grams disodium succinate, respectively.) volumes of 0.05 m nah2po4 and 0.05 m na2hpo4 (pk's for phosphoric acid are 2.15, 6.82 and 12.38). which of the following best describes the resulting solution?

What is the mass of 4 molecules of co2