At what temperature in the Kelvin scale does water boil? Explain what happen when we supply heat energy to water till it changes its state. What is this great energy called?

Catherine has some seawater. She wants to separate pure water from the seawater. She sets up the apparatus shown in the diagram below. Name the change of state that occurs at the surface of the seawater. It is a distillation diagram

14. Apply Concepts Write the correct chemical formula for the compounds formed from each pair of elements a. potassium and sulfur b. calcium and oxygen C. sodium and oxygen d. aluminum and nitrogen

How many grams are in one mole of phosphide?

What observations will you look for to determine if a metal undergoes reaction?

In the laboratory, an unknown element X reacts with fluorine. The following ionic compound is obtained: XF. According to the valence electrons of fluorine, to which family does the element X belong? Select one: a. halogen b. alkali metals c.

Calculate the number of ATPs generated by the complete metabolic oxidation of tripalmitin (tripalmitoylglycerol). Hydrolysis of the triacylglycerol occurs at the cell surface.

If a gas is moved from a large container to a small container but its temperature and number of moles remain the same, what would happen to the pressure of the gas? It would increase. It would be halved. It would stay the same.

Which of the following would require the largest volume of 0.100 M sodium hydroxide solution for neutralization?: (A) 20.0 mL of 0.0500 M nitric acid (B) 15.0 mL of 0.0500 M hydrobromic acid (C) 5.0 mL of 0.0100 M sulfuric acid (D) 10.0 mL of 0.

Approximately what volume do 3.0 moles of kr gas occupy at stp? 80.0 40.0 l none of the above 20.0

What is the correct formula when Aluminum and Nitrogen are combined? a. Al3N b. AlN c. AlN3 d. Al2N