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Chemistry, 22.06.2019 12:30, hayleyconsole
Nebulae are enormous clouds in outer space. they are made mostly of hydrogen gas, helium gas, and dust. some nebulae glow brightly, while others do not. the stars that people see are huge, bright balls of glowing gas. they are made mostly of hydrogen and helium. which statement correctly describes other ways in which nebulae and stars are different? a. stars can form inside a nebula but a nebula can never be produced by any star. b. a star always has a higher density than a nebula. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star.
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Chemistry, 23.06.2019 16:00, jakebuttone
Afuel has 30.43% nitrogen and 69.57% oxygen. find the molecular formula of the compound if it has a mass of 92 grams per mole a. no b. n2o4 c. no2 d. n4o8
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Chemistry, 23.06.2019 18:30, vchery21
Match the following items. match the items in the left column to the items in the right column. 1. 1/1,000 precision 2. uncertainty value of measurement milli- 3. 1,000 accuracy 4. instrument to measure volume balance 5. degree of exactness of a measurement centi- 6. instrument to measure mass graduated cylinder 7. correctness of a measurement ± value 8. 1/100 kilo-
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