How can we test whether a substance is a metal or a non-metal

At night, plants take in the gas of

How many moles of fe3o4 can be produced when 12.00 mol fe react with 6.00 mol o2?

Explain how magma forms

The mass spectrum represented above is most consistent with which of the following elements? Eu Gd Tb Dy

Tear gas has the composition 40.25% carbon, 6.19% hydrogen, 8.94% oxygen, 44.62% bromine. what is the empirical formula of this compound?

32 g of sulfur will react with 48 g of oxygen to produce 80 g of sulfur trioxide. if 20 g of sulfur and 100 g of oxygen are placed into a sealed container and allowed to react, what is the mass of sulfur trioxide in the container after the reaction

Water exhibits high levels of cohesion due to the polarity of the molecule (positively and negatively charged sides). given this information, which type of bond is responsible for water's cohesion and which atoms interact to form this bond?

scientist have found many marine fossils on the mountain far from any ocean or sea what is the best explanation for these fossils

The change in energy needed to change the state of a substance is

What is the main goal of sustainable agriculture? A. To rely heavily on mechanization, pesticides, and fertilizers B. To produce cheap and abundant food at a high cost C. To feed a growing world without damaging the ecosystem D.