Chemistry, 05.10.2019 03:30 19dansiste
When a solid such as ice begins to melt, heat energy is added. what is the function of this added heat energy?
a. to increase potential energy
b. to separate hydrogen atoms from oxygen atoms
c. to break the bonds between the individual water molecules
d. to add energy to the hydrogen bonds among water molecules
Answers: 2
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Which of the dna typing techniques do you think you would choose if you had to analyze a dna sample? why?
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State one important difference between a physical change and a chemical change?
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Scientists often deal with numbers that are either very large or very small. for example, the radius of the sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 × 10-4 millimeters. express each of these numbers in an alternate form.
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Chemistry, 23.06.2019 04:40
6) (a) calculate the absorbance of the solution if its concentration is 0.0278 m and its molar extinction coefficient is 35.9 l/(mol cm). the depth of the cell is 5 mm. (b) what is the %t? (7) calculate the absorbance of the solution if the transmitted light intensity is 70% of the initial light beam intensity
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When a solid such as ice begins to melt, heat energy is added. what is the function of this added he...
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