Describe why the substance iron sulphide can be classified as an element, compound or mixture.

Wirte and balance, silver nitrate + calcium chloride + calcium nitrate + silver chloride

Can someone tell me what is an ore?

How many atoms are in 3.3 moles of copper atoms? A. 1.9 x 10 atoms B. 2.0 x 10^23 atoms C. 2.0 x 10^24 atoms D. 2.0 x 10^-23 atoms

Which season will the northern hemisphere experience if the axis of Earth is tilted away from the sun? Select one: a. Fall b. Spring c. Summer d. Winter

What is the oxidation number of iodine in KIO4? (1) + 1 (3) + 7 (2) - 1 (4) - 7

If an atom donates or accepts an electron, what is it considered

In this experiment, you will measure mass and volume of various sport balls, both regularly shaped ball and irregularly shaped.

An atom that has a negative four charge will have one of the following? A. 4 more protons than electrons B. An equal amount of protons and electrons C. 4 more electrons than protons D. 2 more neutrons than protons

The distance from santa maria to los Alamos is 15.9 mi. what is the distance in cm?

50*12*1 over 100 slove