50
I expect you mean Antoine Lavoisier. Please see the link.
Endothermic reactions are characterized by the release of heat during the reaction. A typical example is the combustion of methane, which when combined with oxygen releases water and carbon dioxide.
there will be certain unavoidable errors that will prevent an experiment from achieving 100% yield. probably the most common error will be filtration and recovery of products. the filtration process may allow some of the product to pass through. Also during recovery there will be some product lost. for example some of the products is stuck on the glass of a flask and cannot be completely removed. other errors could be the limiting reactant may not be 100% pure, eg. (the reactant may also contain water moisture)
Since argon is a noble gas, I wouldn't expect much to happen; specifically, I wouldn't expect any chemical reaction.
Gram positive
you should expect a purple color because the reaction would not go through with out the catalyst sulfuric acid. If the reaction did go through you would expect a yellow color with pure aspirin
middle 1
Explain why a high energy of activation causes a reaction to be slow?
I expect it to be babies or the elderly
Gram negative
well what do you expect. "For every action, there is an equal or opposite reaction." There is subtraction, and the opposite is addition.
When consumers buy goods and services, they expect them to be as good as the seller claims they are. They look for utility when they purchase the goods.