Answer : The concentration after 17.0 minutes will be, 
Explanation :
The expression for first order reaction is:
![[C_t]=[C_o]e^{-kt}](https://tex.z-dn.net/?f=%5BC_t%5D%3D%5BC_o%5De%5E%7B-kt%7D)
where,
![[C_t]](https://tex.z-dn.net/?f=%5BC_t%5D)
= concentration at time 't' (final) = ?
![[C_o]](https://tex.z-dn.net/?f=%5BC_o%5D)
= concentration at time '0' (initial) = 0.100 M
k = rate constant = 
t = time = 17.0 min = 1020 s (1 min = 60 s)
Now put all the given values in the above expression, we get:
![[C_t]=(0.100)\times e^{-(5.40\times 10^{-3})\times (1020)}](https://tex.z-dn.net/?f=%5BC_t%5D%3D%280.100%29%5Ctimes%20e%5E%7B-%285.40%5Ctimes%2010%5E%7B-3%7D%29%5Ctimes%20%281020%29%7D)
![[C_t]=4.05\times 10^{-4}M](https://tex.z-dn.net/?f=%5BC_t%5D%3D4.05%5Ctimes%2010%5E%7B-4%7DM)
Thus, the concentration after 17.0 minutes will be,
Answer:
14.125
Explanation:
If my calculations are right.
- there are 44.0 moles in co2
- +20.0
- which equals 64
- there are 78.125 moles in O2 so just subtract it by 64 which gives you
- 14.125
MOLE CALCULATION
divide the mass of the material by its molar mass. The molar mass of a substance is the mass in grams of one mole of that substance.
Answer:
Na
Explanation:
The atomic number of sodium is 11 while that of fluorine is 9 . Thus the number of electrons in sodium are 11 while in fluorine are 9 .
The cation of an atom form when atom lose electron.
Na → Na⁺ + e⁻
it means the cation of sodium loses its one outer most electron. Thus it has 10 electron while Na atom has 11 electron.
On other hand fluorine has 9 electrons.
The anion of an atom form when it gain electron.
F + e⁻ → F⁻
Thus the number of electrons in given species are,
Na = 11
Na⁺ = 10
F = 9
F⁻ = 10
Na has more number of electrons.
Metabolism is the entire set of chemical reactions carried
out by and organism.
Metabolism is the chemical process in your body to maintain
life. It transport substances from the
food that you eat when digested into the different parts of the cells in your body.
There are certain points of the sea floor that contain young rocks, and as you go outward from there, they get older, indicating some sort of "birthplace". Also, the sea floor consists of alternating magnetic "strips," which can be accounted for by the gradual formation by the upwelling of lava.
