How much heat, in Joules, is needed to raise the temperature of 257 g of ethanol by 49.1°C? (cethanol = 2.4 J/g°C) A) 30284.9 J
B) 12618.7 J
C) 616.8 J
D) 5257.8 J

Select the correct answer how does the heat content of the reaction change in the process of photosynthesis when a glucose molecule is formed? ca the value of is negative the value of qis positive the value of a remains constant the value of a decreases the value of equals zero e

Which of the following is not one of the steps in the scientific method a. hypothesize b. summarize c. analyze d. familiarize

The picture represents the process that produces most of the energy used by living organisms on earth. which process is represented in the picture? a) the magnetic attraction between two hydrogen nuclei. b) the fusion of hydrogen nuclei to produce a helium nucleus in the core of the sun. c) the fission of hydrogen nuclei to produce a helium nucleus in the core of the sun. d) the chemical reaction between hydrogen nuclei to produce a helium nucleus in earth's atmosphere.