1.
The chemical reaction is written as follows:
![Fe_2O_3(s)+3CO(g)\rightarrow2Fe(s)+3CO_2(g)](https://tex.z-dn.net/?f=Fe_2O_3%28s%29%2B3CO%28g%29%5Crightarrow2Fe%28s%29%2B3CO_2%28g%29)
2.
The chemical reaction is written as follows:
![\text{CoCl}_3(l)+3NaOH(l)\rightarrow Co(OH)_3(s)+3\text{NaCl(l)}](https://tex.z-dn.net/?f=%5Ctext%7BCoCl%7D_3%28l%29%2B3NaOH%28l%29%5Crightarrow%20Co%28OH%29_3%28s%29%2B3%5Ctext%7BNaCl%28l%29%7D)
Thus, the balanced chemical equation with their state is written as above.
Answer:
Momentum, p = mv
Explanation:
The momentum of an object gives the relation between mass when it is in motion. It is given by the relation as follows :
![p=m\times v](https://tex.z-dn.net/?f=p%3Dm%5Ctimes%20v)
Where
m is the mass of the object
v is the speed of the object
It is clear that the correct option is (A) "p = mv". Hence, this is the required solution.
Answer:
Horizontal acceleration is 0 in a projectile motion
Explanation:
first we have to find the horizontal velocity
15cos40 = 11.49ms^-1
and then use the following equation to find the distance
![s = ut + \frac{1}{2} a {t}^{2} \\ s = 11.49 \times 2 \\s = 22.98m](https://tex.z-dn.net/?f=s%20%20%3D%20ut%20%2B%20%20%20%5Cfrac%7B1%7D%7B2%7D%20a%20%7Bt%7D%5E%7B2%7D%20%20%5C%5C%20s%20%3D%2011.49%20%5Ctimes%202%20%5C%5Cs%20%3D%2022.98m)
Answer:
B) Physical properties cannot be observed without changing the identity of the material.