Balance these scientific equations: 2 Al + Fe2O3 - > 2 Fe + Al2O3

2Ag+S - > Ag2S

CaCO - > CaO + CO2

Elementos quiimicos

Can you see a non living and living atoms with a magnifying glass?

How does the Bohr's model of the atom differ from the quantum mechanical model?

The concept of empiricism states that all rationally accepted knowledge is determined from experience. Francis bacon was one of the first scientists to promote this theory. What was it's impact on society?

What type of mixture is chicken noodle soup

How many sulfide ions are present in 23.5g of Sb2S3

2. An automobile tire has a pressure of 210 kPa at 293 K. What will be the tire pressure after driving, if the tire temperature rises to 308 K?

Students measuring the mass of a rock record 6.759 g, 6.786 g, 6.812 g, and 6.779 g. Which other measurement of the block's mass would be most precise? A. 6.702 g B. 6.781 g C. 6.605 g D. 6.858 g

What two elements make up dihydrogen monoxide?

What did scientists observe using the earliest microscopes