Using the periodic table, which of the following elements has the most properties in common with calcium (Ca) ?

potassium (K)

magnesium (Mg)

scandium (Sc)

argon (Ar)

What is the category name of these each: kingdom phylum class order family genus species

How many grams of KMnO are required to make 100 mL of a 1.2 M solution?

What functions are similar in both eukaryotic and prokaryotic cells

You are given 250. mL of a stock 0.100 M Alanine solution and instructed to dilute a portion of it. So, you use a pipette and transfer 5.00 mL of the original stock solution into a flask and add 95.0 mL of water.

What would be needed for shale to form from slate

What is an example of making a qualified observation

With respect to composition, how is the compound made from hydrogen and oxygen different from mixtures of these two elements?

How should scientist respond when new evidence that challenges current is presented?

Consider the following reaction, equilibrium concentrations, and equilibrium constant at a particular temperature. Determine the equilibrium pressure of H2. D2 (g) + H2 (g) ⇌ 2 HD (g) Kp = 1.80 P (D2) eq = 1.1 * 10-3 atm P (HD) eq = 2.7 * 10-3 atm

Find δe for the change in state of 1.0 molh2o (l) at 79 ∘c to h2o (g) at 116 ∘c. the heat capacity of h2o (l) = 75.3 j/molk, heat capacity of h2o (g) = 25.0 j/molk, and the heat of vaporization of h2o is 40.7*103j/mol at 100 ∘c.