Which of the following describes a pattern?

A. A record snowfall in January of one year

B. A solar eclipse that happens every 18 months

C. A tornado that is worse than any before it

D. The average height of a Sequoia tree

Write the chemical formula for carbon tetrachloride and calcium bromide

In the reaction between copper sulphate solution and sodium sulphide solution, 15.9 g copper sulphate completely reacts with 7.8 g of sodium sulphide. It is observed that 9.5 g of copper sulphide is formed.

What is the name of the ionic compound formed from potassium and iodide?

Predict the sign of ΔSsys for each of the following processes. Which are positive? (a) Gasoline vapors mix with air in a car engine. (b) Hot air expands. (c) Humidity condenses in cold air.

What is the maximum number of electrons that can occupy a box in an orbital filling diagram at any energy level? A. 2 B. 6 C. 8 D. 14

Can you explan process of budding in yeasts?

A sample of CO2 gas which weighs 1.62 grams has a volume of 1.02 liters when collected at 20oC. What would be the pressure of the gas sample?

Use the rate constants for the forward and reverse reactions to determine whether reactants or products are favored at equilibrium in this case: kforward Keq = kreverse When Kea < 1, the equilibrium lies to the left (reactants are favored).

Why is HBrO a weak acid

Plastic, rocks, and steel are all matter. They are made of tiny particles that can't be broken down into smaller pieces. These particles are called: