253.15
The temperature T in degrees Celsius (°C) is equal to the temperature T in Kelvin (K) minus 273.15:
T(°C) = T(K) - 273.15
Answer:
yes 4K + O2 ------>2K20 is true.
Answer : The mass of
is, 9.64 grams.
Explanation : Given,
Mass of
= 54.6 g
Molar mass of
= 17 g/mol
Molar mass of
= 2 g/mol
First we have to calculate the moles of
.
![\text{Moles of }NH_3=\frac{\text{Given mass }NH_3}{\text{Molar mass }NH_3}](https://tex.z-dn.net/?f=%5Ctext%7BMoles%20of%20%7DNH_3%3D%5Cfrac%7B%5Ctext%7BGiven%20mass%20%7DNH_3%7D%7B%5Ctext%7BMolar%20mass%20%7DNH_3%7D)
![\text{Moles of }NH_3=\frac{54.6g}{17g/mol}=3.21mol](https://tex.z-dn.net/?f=%5Ctext%7BMoles%20of%20%7DNH_3%3D%5Cfrac%7B54.6g%7D%7B17g%2Fmol%7D%3D3.21mol)
Now we have to calculate the moles of ![H_2](https://tex.z-dn.net/?f=H_2)
The balanced chemical equation is:
![2NH_3(g)\rightarrow 3H_2(g)+N_2(g)](https://tex.z-dn.net/?f=2NH_3%28g%29%5Crightarrow%203H_2%28g%29%2BN_2%28g%29)
From the balanced reaction we conclude that
As, 2 mole of
react to give 3 moles of ![H_2](https://tex.z-dn.net/?f=H_2)
So, 3.21 mole of
react to give
mole of ![H_2](https://tex.z-dn.net/?f=H_2)
Now we have to calculate the mass of ![H_2](https://tex.z-dn.net/?f=H_2)
![\text{ Mass of }H_2=\text{ Moles of }H_2\times \text{ Molar mass of }H_2](https://tex.z-dn.net/?f=%5Ctext%7B%20Mass%20of%20%7DH_2%3D%5Ctext%7B%20Moles%20of%20%7DH_2%5Ctimes%20%5Ctext%7B%20Molar%20mass%20of%20%7DH_2)
![\text{ Mass of }H_2=(4.82moles)\times (2g/mole)=9.64g](https://tex.z-dn.net/?f=%5Ctext%7B%20Mass%20of%20%7DH_2%3D%284.82moles%29%5Ctimes%20%282g%2Fmole%29%3D9.64g)
Therefore, the mass of
is, 9.64 grams.
Answer:
$18.30
Explanation:
The change is the amount left over after the selling price has been matched by the buyer.
Let us find the total cost of what of Ms. Kuhn bought;
For the shirt;
Cost = 4 shirts for $15.95 each = 4(15.95) = $63.8
2 new belts for $8.95 each = 2(8.95) = $17.9
Total cost = $63.8 + $17.9 = $81.7
The amount of change left = $100 - $81.7 = $18.3
Nylon is named as the most useful synthetic material. Nylon belongs to a family of materials called "polyamides."