If the electron configuration of an element is 1s22s22p63s23p5, the element is

a. iron.

b. bromine.

c. chlorine.

d. phosphorus.

Which statement best explains why most atomic masses on the Periodic Table are decimal numbers? (1) Atomic masses are determined relative to an H-1 standard. (2) Atomic masses are determined relative to an O-16 standard.

A certain amount of gas is trapped in a nonrigid container at atmospheric pressure. If the container is cooled and the gas in the container remains at atmospheric pressure, what will happen? A. The number of moles of gas will decrease. B.

Which statement describes the flow of electricity if a small motor is connected to the gap in the wire and the circuit is closed?

What is the reaction constant if the initial concentration of a contaminant is 100 mg/L, and its final concentration is 10 mg/L after a period of 2 hours and the reaction is characterized bya) Zero Order Kinetics

Identify the oxidizing agent in the reaction SnO2 (s) + 2C (s) →∆ Sn (l) + 2CO (g), the production of metallic tin from tin (IV)

Using EDTA as the titrant and a free metal in solution is called a direct titration. This can be measured using an indicator that changes color when the metal is no longer in solution.

What is the relative formula mass for ammonium sulphate

How to find h30 in 0.08m

Nitroglycerin (c3h5n3o9) is a powerful explosive. its decomposition may be represented by 4c3h5n3o9 → 6n2 12co2 10h2o o2 this reaction generates a large amount of heat and gaseous products.

A 3-column table with four rows. The first column has entries Liquid A, Liquid B, Liquid C, Liquid D. The second column titled mass has entries 160 grams, 173 grams, 198 grams, 220 grams.