Chemistry, 13.10.2020 01:01 chellybean
When an electron in an atom moves from a higher, less stable level, down to a lower, more stable level, a photon is
A)
created.
B)
emitted.
C)
absorbed.
D)
destroyed.
Answers: 1
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How have the greenhouse gasses increased from the year 2000 to 2018
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Which of the following are sources of revenue for media companies? a. direct sales to producers b.advertising and subscriptions c. online purchase d. capital investments
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Chemistry, 22.06.2019 22:00
For a family dinner, joseโs mom baked a loaf of bread. during the meal, his grandmother commented, โthis bread is so dense! โ what do you think his grandmother meant by the word dense? you have some ideas regarding density already, but this experiment will enrich your understanding of the relationship between mass, volume and the density of objects. when making measurements in this experiment we will be using si units, the international system of units. the purpose of using si units is to have the ability to communicate and compare data results with other experiments without having to make conversions. measurement symbol si unit length m meter mass kg kilogram volume l liters density kg/l kilograms per liter any calculations that are performed during this experiment will ultimately be reported in scientific notation. recall that scientific notation is extremely important when we have data that is extremely small or large. scientists rely on a standard form of communication to quickly make hypotheses and judgements based on data. what is the density of block a? a0kg/l what is the density of block b? a1kg/l what is the density of block c? a2kg/l what is the density of block d? a3kg/l what is the density of block e? a4kg/l which block is the densest? a5
Answers: 1
Chemistry, 23.06.2019 07:00
Achemist who studies water samples did a demonstration of how to test for lead in water. she added a clear solution of potassium iodide to a clear solution of lead nitrate. then a yellow swirling solid formed in the liquid. what is most likely true about the yellow solid?
Answers: 3
When an electron in an atom moves from a higher, less stable level, down to a lower, more stable lev...
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