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Jet001 [13]
3 years ago
13

Which of the following is one way to prevent the corrosion of iron? 

Chemistry
1 answer:
Drupady [299]3 years ago
4 0
B: Painting over a metal surface in order to prevent rust is known as rust proofing and it works by preventing oxygen and water from reaching the metal surface thus preventing a redox reaction which would result in rusting.
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The decomposition of water produces 50g of Hydrogen gas and 75 g of oxygen gas. How much water
Lostsunrise [7]

84.24 g of water (H₂O)

Explanation:

We have the following chemical reaction:

2 H₂O → 2  H₂ + O₂

Now we calculate the number of moles of products.

number of moles = mass / molar weight

number of moles of H₂ = 50 / 2 = 25 moles

number of moles of O₂ = 75 / 32 = 2.34 moles

We see from the chemical reaction that for every 2 moles of H₂ produced there are 1 mole of O₂ produces for every 25 moles of H₂ produced there are 12.5 moles of O₂ but we only have 2.35 moles of O₂ available. The O₂ will be the limiting quantity from which we devise the following reasoning:

if        2 moles of H₂O  produces 1 mole of O₂

then  X moles of H₂O  produces 2.34 mole of O₂

X = (2 × 2.34) / 1 = 4.68 moles of H₂O

mass = number of moles × molar weight

mass of H₂O = 4.68 × 18 = 84.24 g

Learn more about:

limiting reactant

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I think it is C species and heredity
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Na2SO4(aq) + CaCl2(aq) --> CaSO4(s) +
Olenka [21]

Answer:

double replacement

Explanation:

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The weather in an area is affected mostly by interactions between what elements?
AlexFokin [52]

Answer:B

Explanation:

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What is scientific method​
morpeh [17]

Answer:

a method of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.

Explanation:

a method of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.

8 0
3 years ago
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