Chemistry
Chemistry, 06.05.2020 08:25, destineedeal1

Explain how the following experimental errors affect the final calculation of the kilocalories per gram for a food item. Be specific as to whether the final value will be higher or lower than if the error had not been made.

a. The student misread the scale and recorded 110.3 g for the final mass of the soda can plus water instead of 101.3 g.
b. Part of the unburned marshmallow fell off before the final mass was determined.
c. The food would not keep burning and had to be relit several times.
d. The thermometer got stuck in the aluminum foil while the food was burning and the final temperature was made with the thermometer in the air above the water and not in the water.

answer
Answers: 3

Other questions on the subject: Chemistry

image
Chemistry, 22.06.2019 04:20, leo4687
Which of the following is true for the actual yield of a reaction? it is always calculated as a ratio. it is the yield from the excess reactant. it is the yield from the limiting reactant. it is always less than the theoretical yield.
Answers: 1
image
Chemistry, 22.06.2019 05:30, nuclearfire278
Why is soap used to remove grease? a. its nonpolar end dissolves the grease. b. it makes the water bond with the grease. c. it chemically bonds with the grease. d. its polar end dissolves the grease. correct answer for apex - a, its nonpolar end dissolves the grease.
Answers: 1
image
Chemistry, 22.06.2019 07:50, carlosiscr7
Many reactions take place in aqueous solution. when potential reactants are mixed, a reaction will occur if there is some driving force that favors the formation of products. it is often convenient to categorize reactions in terms of these driving forces: precipitate formation, in which an insoluble solid is formed, weak electrolyte formation, as in a neutralization reaction involving water, or transfer of electrons, as in a redox reaction. these reactions can be represented by full molecular equations, which contain all species in the reaction mixture, or by net ionic equations, which show only the species that actually undergo a change. the latter does not contain the spectator ions, which do not undergo a net change or do not take part in the reaction. part a when the following two solutions are mixed: k2co3(aq)+fe(no3)3(aq) the mixture contains the ions listed below. sort these species into spectator ions and ions that react. drag the appropriate items to their respective bins. view available hint(s) spectator ions ions that react part b what is the correct net ionic equation, including all coefficients, charges, and phases, for the following set of reactants? assume that the contribution of protons from h2so4 is near 100 %.ba(oh)2(aq)+h2so4(aq)→ express your answer as a chemical equation. view available hint(s) nothing provide feedback
Answers: 3
image
Chemistry, 22.06.2019 11:50, bellojamilet410
What substance has a mass of 9.5g and volume of 2.1cm^3
Answers: 2
Do you know the correct answer?
Explain how the following experimental errors affect the final calculation of the kilocalories per g...

Questions in other subjects: