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Lemur [1.5K]
3 years ago
8

a candle brought near the mouth of a jar containing hydrogen gas starts burning but is extinguished when pushed in side the jar

,why?​
Chemistry
1 answer:
pogonyaev3 years ago
7 0

Answer:

it stop burning because the gas surrounds itself

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c i believe, not sure

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What is the mass of a cylinder of lead that is 2.50 cm in diameter, and 5.50 cm high? The density of lead is 11.4 g/cm3. The mas
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8 0
4 years ago
A student added 50.0 ml of an naoh solution to 100.0 ml of 0.400 m hcl. The solution was then treated with an excess of aqueous
jok3333 [9.3K]

Answer is: concentration of the sodium hydroxide solution is 2M.

Balanced chemical reaction:

3NaOH(aq) + Cr(NO₃)₃(aq) → Cr(OH)₃(s) + 3NaNO₃(aq).

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n(Cr(OH)₃) =2.06 g ÷ 103 g/mol.

n(Cr(OH)₃) = 0.02 mol.

From reaction: n(Cr(OH)₃) : n(NaOH) = 1 : 3.

n(NaOH) = 0.06 mol.

From chemical reaction: NaOH(aq) + HCl(aq) → NaCl(aq) + H₂O(l):

n(HCl) = n(NaOH) = 0.1 L · 0.4 M = 0.04 mol.

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7 0
3 years ago
2 Points
hoa [83]

Answer:

b=an s orbital

Explanation:

because the s orbital is being filled before the p ,d and f orbital

4 0
3 years ago
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