1-which of the following statements is not a description of saturn?

known for its rings
largest planet in the solar system
one of the gas giant planets
has several moons
2-which of the following statements is not a description of mars?

has a reddish color
has a thin atmosphere
one of the rocky planets
has no moons
3-planets move around the sun in elliptical orbits.

true
false
4-which of the following statements is not a description of asteroids?

they orbit the sun.
they vary in size and shape.
most of them lie in a belt between earth and mars.
they are thought to be remains that never formed a planet.
5-according to the chart below, which planet has the smallest inner core? (look at image)
mars
jupiter
venus
earth
6-two planets are orbiting a star. planet a is closer to the star than planet b. which description explains the expected motion of planets a and b?

the average speed of planet b is faster than that of planet a.
the average speed of planet b is equal to that of planet b.
the orbital period of planet b is shorter than that of planet a.
the orbital period of planet a is shorter than that of planet b.

The last few miles of the marathon are the most difficult for heather, her hair plastered to her head, sweat clinging to her arms, and her legs already feeling as if they had nothing left, just dead weight. after grabbing a cup of ice water, she feels the ice cubes smash against her nose as she gulps some cool refreshment and keeps on running. in these last few miles, the breeze kicks up and she finally feels some coolness against her skin. drips of sweat, once clinging to her forehead, now spill down, and heather feels more pain as the sweat flows into her eyes.which of the following is the most likely reason why the ice struck heather’s nose when she took a drink? a) water can function as a solvent. b) water can store large amounts of heat. c) water can moderate temperatures through evaporative cooling. d) the density of water decreases when it freezes. e) water has a cohesive nature.sweat remained on heather’s forehead and arms because of the a) high salt content of sweat b) cohesive nature of water c) ability of water to moderate heat d) high evaporative cooling effect of water e) ability of water to act as a solvent

Given the following equation: 2a1 + 3mgcl2 --> 2alcl3 + 3mg how many moles of aluminum chloride are produced from 2.5 moles of magnesium chloride?

What is a number added in front of a formula in order to balance the equation