Chemistry, 12.12.2019 02:31 wesleygrimes0
Astudent measures the length of a 1.00 m standard bar. he obtains measurements of 0.99 m, 1.01 m, and 1.00 m. which describes his measurements?
a. precise but not accurate
b. accurate but not precise
c. neither precise nor accurate
d. both precise and accurate
Answers: 1
Chemistry, 22.06.2019 02:10
When 225mg of anthracene, c14h10(s), was burned in a bomb calorimeter the temperature rose by 1.75k. calculate the calorimeter constant. by how much will the temperature rise when 125mg of phenol, c6h5oh(s), is burned in the calorimeter under the same conditions? (δch< (c14h10,s)=–7061 kj mol−1.)
Answers: 3
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Chemistry, 22.06.2019 10:30
Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:
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Chemistry, 22.06.2019 18:50
Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.
Answers: 1
Astudent measures the length of a 1.00 m standard bar. he obtains measurements of 0.99 m, 1.01 m, an...
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