Number of moles= mass/ molar mass
Or n=m/MM
n = number of moles
m = mass
MM = molar mass
1) n CuO = 2.4g / 79.54g/mol = 0.03 mol CuO
2) n Cu(NO3)2.xH2O = 7.26 g / 205.6 = 0.035 moles of Cu(NO3)2.xH2O
3) 205.6 g
Cu = 63.5 g
N = 14g
O =16g
H= 1 g
63.5+ (14+(16*3))*2+1*2+16 =205.6 g
4) yes is 188g
5) I don’t know, I assume was 1
I think it is b.heat transfers to his body from the water by conduction
The respiratory system<span> brings oxygen into the lungs when you breathe. </span>The digestive system<span> breaks food down into nutrients such as glucose. Now the </span>circulatory system<span> enters the picture. It transports glucose and other nutrients from </span>the digestive system<span> to the cells.
</span><span>Integumentary System. (The skin, hair, and nails form the body's outer covering, or integument.)
Muscular System
Skeletal System
Circulatory System
Nervous System
Respiratory System
Hope this helps!:)
</span>
<u>Answer:</u> The pH of the solution is 4.51.
<u>Explanation:</u>
pH is defined as the negative logarithm of hydrogen ion concentration present in the solution.
![pH=-log [H^+]](https://tex.z-dn.net/?f=pH%3D-log%20%5BH%5E%2B%5D)
.....(1)
Given concentration of ![[H^+]=3.1\times 10^{-5}M](https://tex.z-dn.net/?f=%5BH%5E%2B%5D%3D3.1%5Ctimes%2010%5E%7B-5%7DM)
Plugging values in equation 1, we get:
Hence, the pH of the solution is 4.51.
D excretory system releases waste like when you use the bathroom and stuff. :)
