Ascientist is studying a previously unknown chemical reaction. she concludes that it is exothermic. what must the scientist have observed?
the reaction released heat.
the reaction formed a gas.
the reaction sped up when a catalyst was added.
the reaction caused the container to get cold.

Aluminum reacts with chlorine gas to form aluminum chloride via the following reaction: 2al(s)+3cl2(g)→2alcl3(s) what is the maximum mass of aluminum chloride that can be formed when reacting 32.0 g of aluminum with 37.0 g of chlorine? express your answer to three significant figures and include the appropriate units.

The chemical bond connecting one nucleotide with the next one along the nucleic acid chain is called a

How many moles of oxygen react with 12 moles of aluminum