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Oliga [24]
2 years ago
6

Compare the drops of wax that harden in hot water and Cold water.

Chemistry
1 answer:
juin [17]2 years ago
7 0

Answer: They are are simular because when the wax cools down its not hot  or it cools down it is the same with hot water it cools after along while.

Explanation:

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Answer:

in prism

it's from the rectangular reflecting surface

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To answer this question, you will need to write the balanced equation and set up a BCA table. Using appropriate rounding rules,
Elenna [48]

Water decomposes when electrolyzed to produce hydrogen and oxygen gas. If 2.5 grams of water were decomposed 1.04 grams of oxygen will be formed.

BCA table:

2H_{2}O ⇒ H_{2} + O_{2}

B  0.13        0 + 0

C  -0.13      0.065 + 0.065

A  0             0.065

Explanation:

Balanced equation for water decomposition into hydrogen and oxygen gases

   2H_{2}O ⇒ H_{2} + O_{2}

B  0.13        0 + 0

C  -0.13      0.065 + 0.065

A  0             0.065

Number of moles of water = \frac{mass}{atomic mass of 1 mole}

mass = 2.5 grams

atomic mass= 18 grams

number of moles can be known by putting the values in the formula,

n = \frac{2.5}{18}

  = 0.13 moles

2 moles of water gives one mole of oxygen on decomposition

so, 0.13 moles of water will give x moles of oxygen on decompsition

\frac{1}{2} = \frac{x}{0.13}

x = 0.065 moles of oxygen will be formed.

moles to gram will be calculated as

mass =number of moles x atomic mass

        = 0.065 x 16

         = 1.04 grams of oxygen.

7 0
3 years ago
How many moles are in 12.5 g ammonium chloride
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Answer:

0.233682161601125

Explanation:

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2 years ago
Which of the following factors does NOT affect surface currents?
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Explaining: surface currents are caused by wind density affects deep ocean currents
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2 years ago
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Which of the following are considered pure substance??
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Answer:

Explanation:

I’m 99.9% sure that it’s an element because it can’t be broken down any more than it already is.

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3 years ago
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