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

If you burn 50.4 g of hydrogen and produce 4.50 * 102 g of water, how much oxygen reacted?

Determine the vapor pressure of a solution at 55 °C that contains 34.2 g NaCl in 375 g of water. The vapor pressure of pure water at 55 °C is 118.1 torr. The van't Hoff factor for NaCl is 1.9

Scientists found a fern fossil in some rock layers of the Grand Canyon. They estimated that a sample of one of the fossils originally contained 1000 carbon-14 atoms when it became 'fossilized', and at the time it was tested, it only contained 250

Consider the chemical reaction in equilibrium. H2 + I2 + heat ⬄ 2HI What will happen to the chemical equilibrium if the temperature of the system is increased?

In anatomical, directional terminology, the esophagus is__ to the mouth

How is pressure related to buoyant force

How are saturated and supersaturated solutions similar?

Cobalt fluoride crystallizes in a closest packed array of fluoride ions, with the cobalt ions filling one-half of the octahedral holes. What is the formula of this compound?

When you get into a parked car in the summer time, the metal clip is hot and the seat belt fabric is not. What has a higher specific heat, the metal clip or the seat belt fabric? Think about the definition of specific heat.

A laboratory procedure calls for making 600.0mL of a 1.1M KNO3 solution. How much KNO3 in grams is needed?