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lora16 [44]
3 years ago
10

Help with chemistry, please

Chemistry
2 answers:
Hitman42 [59]3 years ago
3 0
The cubes have only the same volume, so the answer is c.
maks197457 [2]3 years ago
3 0
The answer is the same volume
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Help me with physical science
kipiarov [429]

Answer:ok

Explanation:fish

4 0
2 years ago
How much energy is released during the formation of 1 mol H2O
kari74 [83]

2.81 moles NO

I HOPE THAT RIGHT

7 0
3 years ago
Balance the combustion eqation; __C5H + __O2 ---> __CO2+__H2O
stira [4]
This equation C5H + O2 ---> CO2 + H2O has a mistake.

C5H is wrong. You missed the subscript of H.

I will do it for you assuming some subscript to show you the procedure, but you have to use the right equation to get the right balanced equation.

Assuming the tha combustion equation is C5H12 + O2 ---> CO2 + H2O

First you need to  balance C, so you put a 5 before CO2 and get

C5H12 + O2 ---> 5CO2 + H2O

Now you count the hydrogens: 12 on the left and 2 on the right. So put a 6 before H2O and get:

C5H12 + O2 ---> 5CO2 + 6H2O

Now count the oxygens: 2 on the left and 16 on the right, so put an 8 on before O2:

=> C5H12 + 8O2 ---> 5CO2 + 6H2O.

You can verify that the equation is balanced
8 0
2 years ago
How many particles are in a 151 g sample of Li2O?
neonofarm [45]

Answer:

3.052 × 10^24 particles

Explanation:

To get the number of particles (nA) in a substance, we multiply the number of moles of the substance by Avogadro's number (6.02 × 10^23)

The mass of Li2O given in this question is as follows: 151grams.

To convert this mass value to moles, we use;

moles = mass/molar mass

Molar mass of Li2O = 6.9(2) + 16

= 13.8 + 16

= 29.8g/mol

Mole = 151/29.8g

mole = 5.07moles

number of particles (nA) of Li2O = 5.07 × 6.02 × 10^23

= 30.52 × 10^23

= 3.052 × 10^24 particles.

4 0
2 years ago
Who developed the idea of electron shells also called orbital shells
alexandr402 [8]

Answer: Niels Bohr

Explanation:

3 0
3 years ago
Read 2 more answers
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