Look at the table of densities below. Identify one material which will float MATERIAL Density (g/cm3) at 20oC
Acrylic 1.18
Aluminum 2.73
Brass 8.55
Wood 0.40
Copper 8.90
Gold 19.3
Iron 7.68
Lead 11.4
Marble Chips 2.70
Nylon 1.30
Rubber 1.51
Graphite 2.16
Steel 7.85
Water 0.99

What must occur for air masses to form fronts

Read the chemical equation. 2c2h2 + 5o2 → 4co2 + 2h2o which of the following statements would be correct if one mole of c2h2 was used in this reaction? one mole of oxygen was used in this reaction. five moles of oxygen were used in this reaction. four moles of carbon dioxide were produced from this reaction. two moles of carbon dioxide were produced from this reaction.

How many moles are in 1.26*10^24 particles in significant figures