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4 years ago

The following balanced equation shows the formation of ethane (C2H6).

Chemistry

1 answer:

almond37 [142]4 years ago

4 0

Answer:

Explanation:

Well, we can see from the equation that hydrogen gas and ethane are in a 2:1 ratio based on their mole coefficients.

You need 2 mol H2 to make 1 mol C2H6. So that means you need 2*13.78 mol H2 to make 13.78 mol C2H6!

2*13.78 = 27.56 mol

C is correct.

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You notice that every time you place butter on your stack of freshly made pancakes, the butter melts.

valentina_108 [34]

Answer:

Heat lost by the pancake = Heat gained by butter

Explanation:

Because energy is always conserved, this process involves the loss of energy by one substance which is gained by another.

The pancakes were freshly made, so they are hot; having the required energy to melt the butter placed on them. The butter absorbs heat from the pancakes which is equal to or greater than its melting point. Thus, the butter melts due to the heat absorbed.

Therefore,

Heat lost by the pancakes = Heat gained by butter

7 0

4 years ago

What is it called when energy is lost or removed?

enot [183]

I think it would be ionization

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3 years ago

If the length, width, and height of a box are 10.00 cm, 7.25 cm and 3.00 cm, respectively, what is the volume of the box in unit

Blizzard [7]

Answer:

For a: The volume of the box is 217.5 mL

For b: The volume of the box is 0.2175 L

Explanation:

The box is a type of cuboid.

To calculate the volume of cuboid, we use the equation:

$V=lbh$

where,

V = volume of cuboid

l = length of cuboid = 10.00 cm

b = breadth of cuboid = 7.25 cm

h = height of cuboid = 3.00 cm

Putting values in above equation, we get:

$V=10.00\times 7.25\times 3.00=217.5cm^3$

For a:

To convert the volume of cuboid into milliliters, we use the conversion factor:

$1mL=1cm^3$

So,

$\Rightarrow 217.5cm^3\times (\frac{1mL}{1cm^3})\\\\\Rightarrow 217.5mL$

Hence, the volume of the box is 217.5 mL

For b:

To convert the volume of cuboid into liters, we use the conversion factor:

$1L=1000cm^3$

So,

$\Rightarrow 217.5cm^3\times (\frac{1L}{1000cm^3})\\\\\Rightarrow 0.2175L$

Hence, the volume of the box is 0.2175 L

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4 years ago

If you can have a anime super power what would it be

nydimaria [60]

Answer:

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3 years ago

When solid ammonium carbonate is heated, it decomposes to form ammonia gas, carbon dioxide gas, and water vapor, so that the sol

kipiarov [429]

Answer:

(NH4)2CO3(s) → 2 NH3(g) + CO2(g) + H2O(g)

Explanation:

The balanced equation can be written when we know the chemical formula of each reactants and products of the reaction.

Ammonium carbonate = (NH4)2CO3(s)

Ammonia = NH3(g)

carbondioxide = CO2(g)

water = H2O(g)

The ammonium carbonate was decomposed in the reaction , so ,

(NH4)2CO3(s) → NH3(g) + CO2(g) + H2O(g)

The reactant is on the left side while the product is on the right side. Let us balance the equation to make sure every atom of element is same number on both sides of the equation.

(NH4)2CO3(s) → 2 NH3(g) + CO2(g) + H2O(g)

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3 years ago