On day 5, only two turtles are on the beach. Describe an unknown variable that could have affected the data.

When a sample of a gas was placed in a sealed container with a volume of 3.35L and heated to 105°C, the gas vaporized and the resulting pressure inside the container was 170.0kPa. How many moles of the gas was president?

1. How many periods make up the periodic table?

Question 1 Is the following question true or false All of today's continents were part of one large land mass 225 million years ago Question 2 Is the following statement true or false The moving continents has had little impact on the distribution

Describe how temperature influences chemical change.

The currect formula for a copper atom that has two electrons is

The internal pressure of a cylinder with one ounce of liquid r410a which has been sitting in 100 degree truck

The transfer of from one molecule to another is an oxidation-reduction reaction, or redox reaction.

Banded iron formations were caused by the production of which atmospheric gas? A) Carbon Dioxide B) Water Vapor C) Oxygen D) Nitrogen

3. Which net ionic equation describes this reaction? 3Ca (OH) 2 (aq) + 2FeCl3 (aq) → 3CaCl2 (aq) + 2Fe (OH) 3 (s) 3Ca2 + (aq) + 3OH - (aq) + Fe3 + (aq) → Fe (OH) 3 (s) + CaCl2 (aq) Fe3 + (aq) + 3OH - (aq) + 3Ca2 + (aq) → Fe (OH) 3 (s) + 3Ca2 + (aq)

How many moles of methane are produced when 25.1 moles of carbon dioxide gas react with excess hydrogen gas?