subject
Chemistry, 22.04.2020 01:47 natalie2sheffield

An advertisement for a commercial hand warmer claims that the hand warmer works because a chemical reaction in the hand warmer draws out the bodyâs own natural heat, causing a warming effect. Which of the following states the accuracy of the claim in the advertisement and best provides a correct scientific justification of the claim?A) The advertisementâs claim is inaccurate because heat flowing from the hands to the warmer would only happen if the chemical reaction was endothermic, which would cause the hands to feel colder. B) The advertisementâs claim is inaccurate because heat flowing from the hands to the warmer would only happen if the chemical reaction was exothermic, which would cause the hands to feel colder. C) The advertisementâs claim is accurate because heat flowing from the hands to the warmer would only happen if the chemical reaction was endothermic, which would cause the hands to feel warmer. D) The advertisementâs claim is accurate because heat flowing from the hands to the warmer would only happen if the chemical reaction was exothermic, which would cause the hands to feel warmer.

ansver
Answers: 3

Another question on Chemistry

question
Chemistry, 21.06.2019 15:30
219 grams of iron (iii) oxide reacts with excess carbon according to the reaction equation shown below. fe2o3 + c → fe + co2 after a scientist performs the chemical reaction they find the actual yield of iron to be 57.4 grams. calculate the percent yield of this chemical reaction.
Answers: 1
question
Chemistry, 22.06.2019 09:30
Melissa is interested in her family tree and how her family has changed over its many generations. melissa probably more closely resembles
Answers: 2
question
Chemistry, 22.06.2019 11:00
Classify this reaction: 2al+n2-> aln.
Answers: 1
question
Chemistry, 22.06.2019 13:00
What happens to the average kinetic energy of a gas when the particles of the gas collide against each other at a constant temperature and volume? explain your answer.
Answers: 3
You know the right answer?
An advertisement for a commercial hand warmer claims that the hand warmer works because a chemical r...
Questions
question
Mathematics, 26.01.2021 22:10
question
Chemistry, 26.01.2021 22:10
question
Health, 26.01.2021 22:10
question
Chemistry, 26.01.2021 22:10
question
Biology, 26.01.2021 22:10
question
Mathematics, 26.01.2021 22:10