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alexira [117]
3 years ago
6

Below you will see both the elements for comparison and a star's spectrum. Your job is to identify all the elements you can dete

ct in the star's atmosphere.
Chemistry
1 answer:
Andreas93 [3]3 years ago
3 0

Answer:

hey how are you doing and I am doing find

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Consider the reaction between acetylene, c2h2, and oxygen in a welding torch: 2c2h2(g) + 5o2(g) → 4co2(g) + 2h2o(g) if 5.4 moles
fredd [130]
<span>                                      2C2H2(g) + 5O2(g) → 4CO2(g) + 2H2O(g)
   from the reaction     2 mol                              4 mol
from the problem      5.4 mol                         10.8 mol

M(CO2) = 12.0 +2*16.0 = 44.0 g/mol
10.8 mol CO2 * 44.0 g CO2/1 mol CO2 = 475.2 g CO2 </span>≈480 = 4.8 * 10² g
Answer is  C. 4.8*10² g.
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3 years ago
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4 years ago
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Pre-lab questions 1. a concentration gradient affects the direction that solutes diffuse. describe how molecules move with respe
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Just like how heat moves from a region of higher temperature to a region of lower temperature, molecules also tend to move from a region of higher concentration to a region of lower concentration. This is called natural diffusion and is naturally happening to reach stability.

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Suppose oxygen was much less electronegative than it is, so that hydrogen-oxygen bonds were much less polar and hydrogen bonds c
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Water would have a much lower boiling point much like its other hydrides and it would loss its ability to dissolve polar substances plus it couldn't form water columns so no more cohesion between water molecules
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A wooden block has a volume of 25.3 cm3. Its mass is 17.0g. What is the density of this block?
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3 years ago
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