How many electrons does phosphorus need to gain to have a stable outer electron shell

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The sun warms a plate that heats up the water in a pool. What type of energy is this? geothermal solar thermal wind solar electric

When potassium metal is placed in water, a large amount of energy is released as potassium hydroxide and hydrogen gas are produced in the reaction 2K (s) + 2H2O (l) → 2KOH (aq) + H2 (g).

The molecular mass of air, at standard pressure and temperature, is approximately 28.97 g/mol. Calculate the mass of 3.33 moles of air. Next, cancel like terms and units.

Compare the movements and positions of people dancing with motions the water molecules in liquid water and water vapor

A large planet that has a deep massive atmosphere is called a?

A volume of 125 mL of H2O is initially at room temperature (22.00 ∘C). A chilled steel rod at 2.00 ∘C is placed in the water. If the final temperature of the system is 21.

The volume of a gas is reduced from 4 l to 0.5 l while the temperature is held constant. what does the pressure of the gas do?

In an experiment, an unknown gas effuses at one-half the speed of oxygen gas, which has a molar mass of 32 g/mol. which might be the unknown gas?

7. Foam cup A has 36 mL of water that contain 2 moles of HCL at 20°C. Foam cup B has 36 mL of water that contain 2 moles NaOH of at 20°C. The contents of foam cup A are added to foam cup B and a chemical reaction occurs.

Which statement is false? a. At equilibrium, equal amounts of products and reactants are present. ΔG° is a function of Keq. b. When reactants become products, they do so through an intermediate transition state. Most biocatalysts are proteins.