Answer: 6.022 x10^23 atoms
Explanation:
Answer:
definite volume. indefinite shape
Answer : The energy released is -3319.7 KJ.
Solution : Given,
Mass of methane = 59.7 g
Molar mass of methane = 16 g/mole
![\Delta H=-890KJ/mole](https://tex.z-dn.net/?f=%5CDelta%20H%3D-890KJ%2Fmole)
The value of
is in negative that means the energy is releasing.
First we have to calculate the moles of methane.
Moles of methane = ![\frac{\text{ Mass of methane}}{\text{ Molar mass of methane}}= \frac{59.7g}{16g/mole}=3.73moles](https://tex.z-dn.net/?f=%5Cfrac%7B%5Ctext%7B%20Mass%20of%20methane%7D%7D%7B%5Ctext%7B%20Molar%20mass%20of%20methane%7D%7D%3D%20%5Cfrac%7B59.7g%7D%7B16g%2Fmole%7D%3D3.73moles)
Now we have to calculate the amount of energy released.
The given reaction is,
![CH_4+2O_2\rightarrow CO_2+2H_2O](https://tex.z-dn.net/?f=CH_4%2B2O_2%5Crightarrow%20CO_2%2B2H_2O)
From the reaction, we conclude that
1 mole of methane releases -890 KJ/mole of energy
3.73 moles of methane releases
of energy
Therefore, the energy released is -3319.7 KJ.
Answer:
The main purpose for converting numbers into scientific notation is to make calculations with surpisingly large or small numbers less complicated. Since zeros are not used to place the decimal point, all of the digits in a number in scientific notation are meaningful and easier to read. Hope this helps!
Explanation:
Answer: Dissolve approximately 3 mg of Sodium Chloride in 2 mL of water.
Add 0.4 mL of silver nitrate TS and acidify with diluted nitric acid.