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Artist 52 [7]
3 years ago
12

Lowest freezing point: N2, CO, or CO2

Chemistry
1 answer:
Julli [10]3 years ago
7 0

Answer:

N2

Explanation:

CO freezing point is -337 F

CO2 freezing point is -109 F

N2 freezing point is -346F

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What is the mass of a 32.5-ml sample of ethanol? the density of ethanol is 0.789 g/ml.
Anon25 [30]

Answer:

25.6 grams of ethanol in 32.5 ml of the substance.

Explanation:

The density of ethanol can be used as a conversion factor.  We know that:

Ethanol is 0.789 g/ml.  That becomes a conversion factor that we may write as (0.789 g/ml) and then convert either grams ethaanol or ml ethanol into the other unit.  We are given volume of ethanol:  32.5 ml.

Note that when we multiply (0.789 g/ml) by (32.5 ml) the ml unit cancels, leaving just grams.  That's what we want, so:

(0.789 g/ml)(32.5 ml) = 25.6 grams of ethanol in 32.5 ml of the substance.

6 0
2 years ago
Use the periodic table to complete these charts.
maria [59]

Answer:

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Explanation:

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4 0
3 years ago
select the equations that are correctly balanced. h2o 2o2? h2o2 fe2o3 3h2? 2fe 3h2o al 3br2? albr3 caco3? cao co2 can you clarif
natta225 [31]
<span>The choices are as follows:
h2o + 2o2 = h2o2
 fe2o3 + 3h2 = 2fe + 3h2o
al + 3br2 = albr3
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The correct answers would be the second and the last option. The equations that are correctly balanced are:

</span> fe2o3 + 3h2 = 2fe + 3h2o 
caco3 = cao + co2

To balance, it should be that the number of atoms of each element in the reactant and the product side is equal.
8 0
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Tresset [83]

Answer:

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Explanation:

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5 0
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Vitek1552 [10]

Answer:

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3 0
3 years ago
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