The distance between planets varies as they move in their orbits. The minimum distance from the Earth to Mars is about

0.35 AU About how many kilometers is that?

15.000.000 km

25 000 000 km

55 000 000 km

70 000 000 km

Why does a gold isotope, with an atomic number of 79, require more neutrons to be stable than a sodium isotope, with an atomic number of 11?

Explain how a single population of organism can result in multiple different populations after many generations.

Tenth element period 3

How many grams of CaBr2 would be needed to create 450. mL of a 2.00 M solution? Round off your answer to the nearest gram. Record your answer in the grid below.

5 moles of a monatomic gas has its pressure increased from 105 Pa to 1.5*105 Pa. This process occurs at a constant volume of 0.1 m3. How much work is done by the gas?

Aluminum oxide, Al2O3, is used as a filler for paints and varnishes as well as in the manufacture of electrical insulators. Calculate the number of moles in 47.51 g of Al2O3.

What volume of 2.00 m must be added to 150.0 ml of 1.00 m chloroacetic acid to produce a buffer solution having a ph of 3.30?

Which microscope came out first

Which exerts greater pressure on the floor-standing flat-footed or standing on tiptoe? on tiptoe, because the force acts over less area on tiptoe, because the force acts over more area flat-footed, because the force acts over more area flat-footed,

1. Sara tells Michael she is 160 centimeters tall, while Michael says he is 60 inches tall. If there are 2.54 centimeters in an inch, who is taller