A magnet is

A) any material that repels metals.

B) any material that attracts iron

C) and material that attracts helium

Sulfurous acid, h2so3, breaks down into water (h2o) and sulfur dioxide (so2). if only one molecule of sulfurous acid was involved in a chemical reaction, how many sulfur (s) atoms would be in the products?

A scientist wants to display the proportion of 250 geese that were male compared to the proportion that were female. What type of visual display should the scientist use

How much water should be added to 0.07 moles of KCL to prepare a 0.5m solution

What is the atomic number of the element in Group 4A, and Period 5? a. 68 b. 131 c. 222 d. 462

Which of the following represents an element CO N2 CO2 H2O

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?