What is chemical symbol for potassium

Which of the following statements best describe a limiting reactant?

Plants return water to the atmosphere through Transpiration perspiration Elimination precipitation

Which of the following is an example of a compound? H2O Na Cl O

If the density of water is 1.000 g/ml, what is the mass in grams of 1.000 gallons of water?

What is the electron domain geometry about phosphorus in the hexafluorophosphate anion (pf6-) g?

Why are some mystery elements easier to identify than others?

Which of the following processes is exothermic (heat or energy is released) ? A) ice melting in a beverage B) dry ice (solid CO2) converting to a gas at room temperature C) evaporation of water from a mud puddle D) burning propane in a barbeque

What is one way to increase the dissolution rate of a sugar cube? a) crush the sugar cube into smaller pieces b) add more sugar cubes to the solvent c) increase the pressure on the solution d) decrease the temperature of the solution

Vitamin A is a very large organic molecule composed of twenty atoms of carbon, one atom of oxygen and thirty atoms of hydrogen. How many atoms total are in TWO molecules of vitamin A. Select one: 84 68 34 102

How many moles of nitrous oxide gas (N2O) is contained in 20.0 L balloon at a pressure of 1.09 atm and a temperature of 298K?