because of the metling point of metals, it is difficult to just simply put metal together and have them to stay together without any type of glue or epoxy based creams.
wielding is used to melt the surface or even change the compound completely so they are able to combine with other metals.
same thing with atoms, you need a lot of heat, and speed to simply make salt or even copper because of the elements not really being favorable of each other.
Answer : The specific heat of substance is ![0.235J/g^oC](https://tex.z-dn.net/?f=0.235J%2Fg%5EoC)
Explanation :
Formula used :
![Q=m\times c\times \Delta T](https://tex.z-dn.net/?f=Q%3Dm%5Ctimes%20c%5Ctimes%20%5CDelta%20T)
or,
![Q=m\times c\times (T_2-T_1)](https://tex.z-dn.net/?f=Q%3Dm%5Ctimes%20c%5Ctimes%20%28T_2-T_1%29)
where,
Q = heat needed = 4.90 kJ = 4900 J
m = mass of sample = 894.0 g
c = specific heat of substance = ?
= initial temperature = ![-5.8^oC](https://tex.z-dn.net/?f=-5.8%5EoC)
= final temperature = ![17.5^oC](https://tex.z-dn.net/?f=17.5%5EoC)
Now put all the given value in the above formula, we get:
![4900J=894.0g\times c\times [17.5-(-5.8)]^oC](https://tex.z-dn.net/?f=4900J%3D894.0g%5Ctimes%20c%5Ctimes%20%5B17.5-%28-5.8%29%5D%5EoC)
![c=0.235J/g^oC](https://tex.z-dn.net/?f=c%3D0.235J%2Fg%5EoC)
Therefore, the specific heat of substance is ![0.235J/g^oC](https://tex.z-dn.net/?f=0.235J%2Fg%5EoC)
Answer:c
Explanation:
I think because ca^+2
It’s loses the ion and if u look back u would see that a cation is a t charge but it’s not Goan that electron it’s losing that electron
By the recreation of the congregated atomic molecules that relatively acquire the evolutionary theory.
It is to create energy that the cell can use. it takes in oxygen to break down food molecules to get cellular energy for cell function