How does atomic radius change from left to right across a period in the periodic table?

a. it tends to decrease.

c. it first increases, then decreases.

b. it tends to increase.

d. it first decreases, then increases.

Which part of the nucleotide makes it possible for a nucleic acid to be a unique code? A.) Nucleotide base B.) Sugar C.) Phosphate

1. What is the oxidation number for the silver ion in tarnish?

Which best describes a stock solution that is used in a dilution? a concentrated solution a solution present in the largest quantity a dilute solution a solution present in the smallest quantity

The table shows the concentration of a reactant in the reaction mixture over a period of time. Reactant Concentration Time Concentration 0 s 1.8 M 210 s 1.2 M 450 s 0.8 M 580 s 0.6 M 720 s 0.

10 Baking soda (NaHCO3) decomposes when it is heated according to the equation below. How many kilojoules of heat are required to decompose 1.95 mol NaHCO3 (s) ? 2NaHCO3 (s) + 1290 - Na2CO3 (s) + H20 (9) + CO2 (9) 126 13 258 129 la • 2.53 x 107

What type of rock is sandstone

According to the Br? nsted-Lowry theory, water A. acts as a base when it accepts a hydrogen ion. B. can be neither an acid nor a base. C. can act as an acid by accepting hydrogen ions. D. can accept but not donate hydrogen ions.

Witch type of crust is thick and contains granite

A chemical base may be defined as a compound which contributes hydroxide ions or increases the OH concentration when dissolved in water. True False

Correct name for LiCl