Why is liquid water currently not stable in most places on mars?

The circles, or orbits, for electrons are called energy levels. Each level can hold only a certain number of electrons. Add electrons to each level until you can't add any more. How many electrons can each level hold?

Sophie monitored the flask and indirectly determined the amount of liquid that remained in the flask by measuring the amount of liquid that had vaporized, condensed in the glass tube, and collected in a beaker at the end of the tube.

You measure the mass and volume of a sample of metal and record the values. You double the mass of the sample and find the new volume of this larger sample. How would the new volume compare to the original volume?

Which of the following solutions can be used to neutralize nitric acid? Ca (OH) 2 hydrochloric acid H2O lemon juice

What kind of ions do acids release when dissolved in water?

A 150ml sample of hydrochloric acid completely reacted with 60.0mL of a 0.100 M NaOH solution. What was the original concentration of the HCl solution

Rearrange in to a quadratic 5.333 = (0.6 + 2p) ² / (0.135 - p)

How hot would a 2.3 L balloon have to get to expand to a volume of 3.0 L? Assume the initial temperature of the balloon is 24 °C, and that the pressure inside the balloon remains constant. A. 3 K B. 42 K C. 128 K D. 390 K

Which pair of nitrogen bases will form a bond in a DNA molecule? a. cytosine and adenine b. adenine and thymine c. guanine and thymine d. thymine and cytosine

Most meteors that fall into the earths atmosphere burn up before reaching the ground. Why is this?