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Vitek1552 [10]
3 years ago
13

Study the reactions.

Chemistry
1 answer:
Rufina [12.5K]3 years ago
4 0

Answer:

The enthalpy of the formation of propane is -104 kJ/mol.

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4 0
3 years ago
Which subshell is represented by the lanthanides family
balu736 [363]
Subshell f is represneted
8 0
3 years ago
If you start with 512 grams of aluminum and 1147 grams of copper chloride to make aluminum chloride and copper, what is the limi
Archy [21]

First you need to calculate the number of moles of aluminium and copper chloride.

number of moles = mass / molecular weight

moles of Al = 512 / 27 = 19 moles

moles of CuCl = 1147 / 99 = 11.6 moles

From the reaction you see that:

if        2 moles of Al will react with 3 moles of CuCl

then  19 moles of Al will react with X moles of CuCl

X = (19 × 3) / 2 = 28.5 moles of CuCl, way more that 11.6 moles of CuCl wich is the quantity you have. So the copper chloride is the limiting reagent.

6 0
3 years ago
5) How many Kilograms are in 12 L of Chlorine Gas?
melamori03 [73]

Answer: 0.03798 kilograms

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number 6.023\times 10^{23} of particles.

To calculate the moles, we use the equation:

\text{Number of moles}=\frac{\text{Given volume}}{\text {Molar Volume}}=\frac{12L}{22.4L}=0.535moles

1 mole of chlorine gas (Cl_2) weighs = 71 g

Thus 0.535 moles of chlorine gas (Cl_2) will weigh = \frac{71}{1}\times 0.535=37.98g=0.03798kg            (1kg=1000g)

Thus there are 0.03798 kilograms in 12 L of chlorine gas.

3 0
3 years ago
What is the molecular formula of a compound that contains 66% Ca and 34% P and
Lostsunrise [7]

Answer:

Ca3P2

Explanation: find out what 66% of the molar weight of the molecule is and then find out how many moles of Ca that would be by dividing it by the molar weight of Ca

then do the same for P

6 0
3 years ago
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