Rank these main group metals according to how vigorously they react with water

The main group metals are elements of group 1 and 2. The reactivity of group 1 elements (alkali metals) increases down the group. Lithium is a bit vigorous and then disappears. The reaction generates little heat because of Lithium's melting point. While the last element down the group, Cesium, explodes on contact possibly shattering the container; forming Cesium hydroxide and hydrogen. The group 2 elements are not as vigorous with water like group 1 but their reactivity also increases as we go down the group. Beryllium reacts with steam at high temperatures while Calcium, for instance, reacts fairly vigorously with cold water in an exothermic reaction

0.853 M

General Formulas and Concepts:

Acid-Base Titrations

Molarity = moles of solute / liters of solution

Explanation:

Step 1: Define

Identify variables

[Given] 6.48 L

[Given] 5.53 mol

Step 2: Solve for Molarity

Substitute in variables:                                                                                        M = 5.53 mol / 6.48 LDivide:                                                                                                                   M = 0.853395

Step 3: Check

Follow sig fig rules and round. We are given 3 sig figs.

0.853395 M ≈ 0.853 M