Which of the following is a mixture?

salt water

carbon dioxide

water vapor

oxygen gas

Preventing iron corrosion is important because many structures, including bridges and iron railings, are likely to rust over time and become weaker. Which of the following conditions would make corrosion more likely? A.

Which of the following changes should improve water solubility? A. adding a methyl group B. adding a hydroxyl group C. adding a carboxyl group D. increasing the size of the drug E. adding a benzene ring

Explain how conduction can increase the temperature of the air above Earth's surface ...?

Carbon dioxide dissolves in water to form carbonic acid. this acid lowers the ph of the water and makes the water corrosive. what is likely to happen if carbon dioxide levels in the atmosphere increase?

If 56 grams of notrogen are used up by the reaction, how many grams of amonia will be produced? 1N2+3H2--> 2NH3

Compared with a ph of 7, a solution of ph 5 has what times/fraction of the hydrogen concentration?

Write a formulae equation to represent the combustion of carbon to form carbon dioxide and the thermal decomposition of magnesium carbonate

A5.00 liter ballon of gas at 25 degree Celsius is cool to 0 degrees Celsius. What is the volume (liters) of the ballon?

How much thermal energy (q) is required to heat 15.2 g of a metal (specific heat = 0.397 J/G) from 21.0 degrees C to 40.3 degree C

Two gas jars are connected to each other, but they are separated by a closed valve. One gas jar contains oxygen, and the other is empty. What will happen when the valve is opened?