How many dots are shown in the electron dot diagram for calcium, in group II and period 4 with 20 protons and 20 electrons? a. four c. eight b. two d. twenty

Examples of thermal energy being converted to another form of energy (Mechanical, chemical, electric, light, nuclear)

What is the correct systematic name of PCl5? (a) Phosphorus chloride (b) Phosphorus pentachloride (c) Monophosphorus chloride (d) Pentachlorophosphorus (e) Pentaphosphorus chloride

There are 9 cherry cokes, 3 diet cokes, and 4 coke zeros in a cooler. Selecting a drink and getting a cherry coke, then a coke zero, without replacement makes this probability independent or dependent?

If liquid substance A is pH 4 and substance B is pH 3, then which is more acidic? How do you know? What is neutral pH?

Which one of these elements is an alkaline earth metal

What does berkelium react with

Classifying living things

Find the parent acid and parent base of al2 (co33, determine if they are strong or weak, and determine if the salt is acidic, basic, neutral, or unpredictable.

A syringe contains 589 mL of CO at 325 K and 1.2 atm pressure. A second syringe contains 473 mL of N2 at 298 K and 2.6 atm. What is the final pressure if the contents of these two syringes are injected into a 1.00 L container at 0.00°C?

Which pair of elements can form an ionic compound? A) Two atoms of hydrogen B) One atom of sodium and one atom of fluorine C) One atom of calcium and one atom of chlorine D) Two atoms of hydrogen and one atom of oxygen