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alexdok [17]
2 years ago
11

What will happen to a iron nail kept in water for some day

Chemistry
1 answer:
Basile [38]2 years ago
4 0

the iron nail will rust

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2SO₂(g) + O₂(g) + 2H₂O(aq) → 2H₂SO₄(aq)
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3 years ago
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What is the purpose of adding 0. 1% agar to the trypticase nitrate broth when conducting the nitrate reduction test?.
PilotLPTM [1.2K]

Agar is used to assist establish an anaerobic environment that promotes nitrate reduction.

Nitrate Reduction test:

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  • Anaerobic respiration and denitrification are two processes that can convert nitrate to a variety of compounds.
  • While denitrification only reduces nitrate to molecular nitrogen, anaerobic respiration employs nitrate as the bacterium's final electron acceptor, reducing it to a range of chemicals.
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5 0
1 year ago
Iron is obtained by reducing iron (III) oxide using the gas carbon monoxide. The reaction is
ivann1987 [24]
A. iron(III) oxide + Carbon-monoxide -> Iron + Carbon-di-oxide.
b.56*2 +16*3
c.Moles=mass(g) / Mr which is 3200/160
d. 2 moles
e.2 moles
f. Moles x Mr = mass so, 20 x 112=2240g
7 0
3 years ago
Sweat is a mixture of water, dissolved solids, and chemicals. How does the water become separated from the sweat leaving a perso
Nataly_w [17]
C) it separates due to evaporation
4 0
3 years ago
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In which of the following reactions is ΔS positive?
ira [324]
Answer: letter b. 

Why?
 Because Entropy(ΔS) INCREASES when INCREASING disorder in a reaction.

A. INCORRECT. Negative ΔS. This is because there are less molecules of gas in the products compared to the reactants.
B. CORRECT. Positive ΔS. This is because you are increasing disorder by breaking down a solid(highly ordered) molecule into two ions in solution(in solution they are less ordered).
C. INCORRECT. Negative ΔS. This is because you are going from a (g)gas which has more disorder to a (s)solid which has much less disorder than a gas.
D. INCORRECT. Negative ΔS. This is because you are decreasing disorder by building a single molecule. There are also more moles of gas on the reactants side indicating a negative ΔS.

Please comment with any further questions. Hope this helped!
5 0
3 years ago
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