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.

The density of an unknown gas at 98°c and 740 mmhg is 2.50 g/l. what is the molar mass of the gas with work showed?

Iron (3) oxide will decompose in the presence of hydrogen gas and heater to produced iron and digydrogen monoxide white a balanced chemical equation

What rule is used to determine how many covalent bonds an element can form? a. the number of covalent bonds is equal to six c the number of covalent bonds is equal to five minus the group number plus the group number b. the number of covalent bonds is equal to eight d. none of the above minus the group number select the best answer from the choices provided