Before free oxygen gas became abundant in the oceans and atmosphere, it reacted with a metal and produced what type of formations?

a. the ionosphere

b. the ozone layer

c. banded iron formations

d. stromatolites

How are the relative gas volumes collected in the two tubes related to the relative number of gas molecules in the tubes?

Which of these statements about resonance is true? (a) when you draw resonance structures, it is permissible to alter the way atoms are connected. (b) the nitrate ion has one long n-o bond and two short n-o bonds.

How would you blance them?

What mass of copper has the same number of atoms as 26.98 g of aluminum? Show your work for full credit! A. Convert the mass of aluminum to moles of aluminum. Molar mass of aluminum (Al) = 26.98 g/mol B.

Describe how heat is transferred from one place to another by convection.

What is the ph of an aqueous solution with [h3o+] = 4*10-13 m?

What are called protons? give examples?

How many grams are in 3 moles of Nal?

What happens if a part of a system fails us?

Adding heat energy causes molecules to slow down. true or false?