Answer:
c
Explanation:
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Answer:
1.3005 M
Explanation:
Given that,
Mass of NaCl = ![76 \ g](https://tex.z-dn.net/?f=76%20%5C%20g)
Molar mass of NaCl= ![22.99+35.45=58.44\ g/mol](https://tex.z-dn.net/?f=22.99%2B35.45%3D58.44%5C%20g%2Fmol)
The formula for calculation of moles,
Moles,
![n=\frac{given \ mass}{molar\ mass}\\n=\frac{76}{58.44} \ g/mol\\n=1.3005\ g/mol](https://tex.z-dn.net/?f=n%3D%5Cfrac%7Bgiven%20%5C%20mass%7D%7Bmolar%5C%20mass%7D%5C%5Cn%3D%5Cfrac%7B76%7D%7B58.44%7D%20%5C%20g%2Fmol%5C%5Cn%3D1.3005%5C%20g%2Fmol)
Given that volume ![=1\ ltr](https://tex.z-dn.net/?f=%3D1%5C%20ltr)
Molarity,
![=\frac{moles\ of\ solute}{litre\ of\ solution} \\=\frac{1.3005}{1}\\ =1.3005\ M](https://tex.z-dn.net/?f=%3D%5Cfrac%7Bmoles%5C%20of%5C%20solute%7D%7Blitre%5C%20of%5C%20solution%7D%20%5C%5C%3D%5Cfrac%7B1.3005%7D%7B1%7D%5C%5C%20%3D1.3005%5C%20M)
Therefore the molarity is 1.3005 M.
Answer:
Mg + 2H₂O —> Mg(OH)₂ + H₂
Explanation:
Mg + H₂O —> Mg(OH)₂ + H₂
The above equation can be balance as illustrated below:
Mg + H₂O —> Mg(OH)₂ + H₂
There are 2 atoms of H on the left side and a total of 4 atoms on the right side. It can be balance by writing 2 before H₂O as shown below:
Mg + 2H₂O —> Mg(OH)₂ + H₂
Now, the equation is balanced
****Check***
Element >>>>> Reactant >>>> Product
Mg >>>>>>>>>> 1 >>>>>>>>>>> 1
H >>>>>>>>>>> 4 >>>>>>>>>>> 4
O >>>>>>>>>>> 2 >>>>>>>>>>> 2
Answer:
The pressure is = 897 torr
Explanation:
We use Gay Lussac's Law.
I believe the answer you ar elooking for is that the noble gases are in the rightmost column of the periodic table