Answer:
Option C. Zn(s) + CoCI2(aq) —> ZnCl2 (aq) + Co(s)
Explanation:
The activity series of metals gives a clearer understanding of how metals displaces other metals in solution. Metals higher in the activity series will always displace those lower in the activity series.
Zinc, Zn is higher in the activity series than cobalt, Co. Therefore, zinc, Zn will displace cobalt, Co in any solution.
Considering the options given above, only option C. reflect the reaction and it is also balanced.
Zn(s) + CoCI2(aq) —> ZnCl2(aq) + Co(s)
Answer:
The boiling point of Kelvin scale is: 373° k
hope it is helpful to you
28 gram of c2h4 must burn as it is equavilant to 1 mole of c2h4
Its also listing the atomic numbers and the mass numbers plus it also has the numbers for the next elements
Answer : The pressure of the hydrogen gas exert before its volume was decreased will be, 2.28 atm
Explanation :
According to the Boyle's law, the pressure of the gas is inversely proportional to the volume of the gas at constant temperature of the gas and the number of moles of gas.
![P\propto \frac{1}{V}](https://tex.z-dn.net/?f=P%5Cpropto%20%5Cfrac%7B1%7D%7BV%7D)
or,
![PV=k](https://tex.z-dn.net/?f=PV%3Dk)
or,
![P_1V_1=P_2V_2](https://tex.z-dn.net/?f=P_1V_1%3DP_2V_2)
where,
= initial pressure of the gas = ?
= final pressure of the gas = 5.09 atm
= initial volume of the gas = 12.16 L
= final volume of the gas = 5.45 L
Now put all the given values in this formula, we get the initial pressure of the gas.
![P_1\times 12.16L=5.09atm\times 5.45L](https://tex.z-dn.net/?f=P_1%5Ctimes%2012.16L%3D5.09atm%5Ctimes%205.45L)
![P_1=2.28atm](https://tex.z-dn.net/?f=P_1%3D2.28atm)
Therefore, the pressure of the hydrogen gas exert before its volume was decreased will be, 2.28 atm