1. What is the solubility of sodium nitrate at 40 C?

2. What is the solubility of potassium chloride at 70 C?

3. What happens to the solubility of potassium chloride as the water temperature increases?

4. If you have 40 grams of potassium nitrate in 100 grams of water at 20 C:

a. How many grams of potassium nitrate will dissolve?

b. How many grams of potassium nitrate will fall to the bottom of the container?

c. At this temperature, 20 C, is this solution saturated, unsaturated or supersaturated? EXPLAIN.

d. At what temperature will the amount of potassium nitrate that fell to the bottom will also dissolve?

e. If this solution was heated to 90 C, would the solution be saturated, unsaturated or supersaturated? EXPLAIN.

5. What happens to the solubility of cesium sulfate gas as the temperature of the water is increased?

6. Carbon Dioxide (CO2) is a gas that is present in carbonated beverages (sodas). The solubility of carbon dioxide has the same shape as the gas in the graph (question 5). Its solubility, however, is too low to appear on the graph. Why do you think it is unwise to open a warm bottle of soda? Make sure you answer in complete sentences and explain when asked.

i believe the answer is a.

assuming that your periodic table has eighteen columns, you should highlight   the four elements in the third column from the left of the table.

neutral atoms of elements after calcium contain d electrons. the energy of d orbitals of a particular main shell lies between the energy of the s and p orbitals of the next main shell. for example, electrons in the have energy higher than those in the orbital while lower than those of the orbital.

by the aufbau principle, electrons fill orbitals one at a time, starting from those of the lowest energy. the orbital is therefore filled right after orbitals and before orbitals.  

potassium has electron configuration and calcium . the s orbital of a main shell holds a maximum of two electrons. the next element would thus have the electron configuration and satisfy the requirements.

a neutral atom of the element contains three electrons on top of the most recent noble gas element. it should thus be placed in the third column of the periodic table. both scandium and yttrium would satisfy the conditions. an aufbau diagram indicates that the 4f orbital is filled before the 5d. however, it appears that exceptions exists for both lanthanum and actinium. neutral atoms of the two d-block elements also demonstrate the and should be highlighted as well.

shield volcanos are angry and get mad over the smallest things so much that there heads erupt   pahoehoe and a'a lava. a composite volcano is the poller opposite of a shield volcano. its   peaceful thing and knows how to control its emotions.      

one negative thing it that it can kill water animals. another negative thing is it can cause the destruction of ecosystem. one way water pollution can be reduced is to conserve energy.