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Nitella [24]
2 years ago
9

Which of these travels fastest in vacuum?

Chemistry
2 answers:
KATRIN_1 [288]2 years ago
8 0
I’m pretty sure it’s d. light if it’s not i’m sorry
Maslowich2 years ago
3 0

Answer:

d, light waves!

Explanation:

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Calculate the number of grams of C2H6 in 4.6 miles of C2H6
Bezzdna [24]
M (C2H6) = n × M = 4.6 × 30 = 13.8 g.
3 0
3 years ago
Sodium metal and water react to form hydrogen and sodium hydroxide. If 1.99 g of sodium react with water to form 0.087 g of hydr
zavuch27 [327]

Answer:

1.56 g of water was involved in the reaction

Explanation:

From the stoichiometric equation

2Na + 2H2O = 2NaOH + H2

NB : Mm Na= 23, Mm H2O = ( 2+16)= 18

2(23) of Na requires 2(18) of water

Hence 1.99g of Na will require 1.99×2×18/2(23) of water = 1.56 g of water

7 0
3 years ago
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The molar mass of SO3 is grams. in significant figures
Vikentia [17]

Answer:

80.066 g/mol

Explanation:

I looked it up

6 0
3 years ago
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In column chromatography (microscale), after loading it with solvent and adsorbent and prior to loading the sample, what level s
Nikolay [14]

Answer:

Explanation:

You should allow the solvent to drop to the level of the adsorvent, so it would never run dry.

When you let your sample to run dry it will never finish to flow from the adsorbent depending of it polarity.

Water should not be used because it can dissolve the adsorbent.

You could use another technique to identify the compound, as an infrared or a ultraviolet detector. You can also, if you know the compounds, identify it for the retention time, for example, if you need to detect two compounds, one more polar than the other, and use a polar adsorbent and a non-polar solvent, the first compound to exit the column will be the less polar one, because it will have a bigger interaction with the solvent than the stationary phase (adsorbent) and will go faster, the second will be the more polar one, because it will have a bigger interaction with the stationary phase.

5 0
3 years ago
What is the only chemical that is liquid at room temperature
Arturiano [62]
The only chemical that is a liquid at room temperature is Mercury. It's toxic, and has a high vapor pressure at room temperature.
8 0
3 years ago
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