Which of the following statements are true? i. models are always wrong unless they are proved by a theoryii. elements, such as lead, are made of tiny particles that mostly consist of open space. iii. the air you breathe is an example of heterogeneous mixture. iv. iv. an isotope of silver-108 has 61 neutrons.
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Chemistry, 22.06.2019 07:30
Using data from seismic waves, geologists have learned that earthβs interior is made up of several
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Chemistry, 22.06.2019 10:30
Acompound has a molar mass of 92.02 grams/mole, and its percent composition is 30.4% nitrogen (n) and 69.6% oxygen (o). what is its molecular formula? a. n2o4 b. no2 c. n2o d. n4o2
Answers: 1
Chemistry, 22.06.2019 12:30
In france, grapes are 1.95 euros per kilogram. what is the cost of grapes, in dollars per pound, if the exchange rate is 1.14 dollars/euro? (2.6)
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Chemistry, 22.06.2019 16:00
About 3% of the water on earth is freshest. only about 40% of that freshwater is available for human use. why is so much freshwater unavailable for human use?
Answers: 2
Which of the following statements are true? i. models are always wrong unless they are proved by a t...
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