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Len [333]
3 years ago
5

26.8 moles of argon contain how many atoms?

Chemistry
1 answer:
stepladder [879]3 years ago
4 0

Answer:

the answers is A

Explanation:

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1.25 cm is the same distance as ?<br> 12.5 Km<br> 12.5 mm<br> 12.5 dm<br> 12.5 m
pogonyaev

Answer:

12.5mm

Explanation:

1cm = 10mm

so you need to multiply the 1.25 by 10 to get it in mm.

6 0
3 years ago
PLS HELP Students in a chemistry class added 5 g of Zinc (Zn) to 50 g of hydrochloric acid (HCl). A chemical reaction occurred t
Vitek1552 [10]

Answer: In simplest case mass of reactants is same as mass of products.

Without thinking this question deeper, mass of ZnCl2 would be 49, but..

Explanation: Reaction should be  Zn + 2 HCl ⇒ ZnCl2 + H2

Amount of zinc is  5 g / 65,38 g/mol = 0,076476 mol and amount

of Hydrogen Chloride is 50 g / 36.458 g/mol = 1,371 mol.

Althought HCl is needed 0.152 moles, zinc is an limiting reactant.

So it is possible to produce only 0.076476 mol Hydrogen and its mass

is 0.154 g.  Mass of ZnCl2 would be 0.076476 mol · (65.38 + 2·35.45) =

 10.42 g

4 0
2 years ago
Which countries have an Taiga (Boreal Forest) biome? (Hint: You may have to click the globe to find out.)
Alinara [238K]
Your answer is Canada for sure I hope you make a 100 :))
7 0
3 years ago
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5. Discuss the phenomena of sunrise and sunset seen on Earth and describe how they will be different from the perspective of out
Colt1911 [192]

Despite its appearance, air has a ‘thickness’ so when the sun is high in the sky the light travels through the air on a very much shorter path than when it is low on the horizon.

Imagine that air water and you are below the surface, the light from an overhead sun will be quite sharp and bright, but if lower in the sky it will have to travel through much more water to reach you, so will look less bright and sharp. It ma not seem the same, but the atmosphere is just like very thin water, and a low lying sun will be drastically reduced in strength, so all you will see is a sun with a shift to the red end of the spectrum as all the actinic part will be filtered away by that thicker atmosphere.

8 0
2 years ago
Which statement describes the Arrhenius interpretation of acids and bases
KIM [24]
<span>it is limited to situations that involve aqueous solutions of specific compounds

I hope this helps</span>
8 0
3 years ago
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