Answer:

Given:
Mass = 14.0 g
Density (
) = 1.38 g/cm³
To Find:
Volume (V)of the plastic used to make water bottle
Explanation:
Formula:

Substituting value of m & density in the formula:


Volume of the plastic used to make water bottle = 10.14 cm³
Ionic bonds are formed due to tendency of a metal to donate an electron and tendency of non metal to gain an electron.
The number of corresponding to each coefficient required to write the balanced equation for the reaction is as below
2 HNO3 + Mg(OH)2 = 2H2O + Mg(NO3)2
the coefficient is therefore
a=2
b=1
c=2
d=1
2 moles of HNO3 reacted with 1 mole of Mg(OH)2 to form 2 moles of H2O and 1 mole of Mg(NO3)2
Answer:
The obtained result indicates that the hydrogen atom is not equal on both sides. Thus the reaction is not balanced.
Explanation:
<u>Answer:</u> The concentration of A after 865 seconds is 0.00125 M
<u>Explanation:</u>
The integrated rate law equation for second order reaction follows:
![k=\frac{1}{t}\left (\frac{1}{[A]}-\frac{1}{[A]_o}\right)](https://tex.z-dn.net/?f=k%3D%5Cfrac%7B1%7D%7Bt%7D%5Cleft%20%28%5Cfrac%7B1%7D%7B%5BA%5D%7D-%5Cfrac%7B1%7D%7B%5BA%5D_o%7D%5Cright%29)
where,
k = rate constant = 
t = time taken = 865 second
[A] = concentration of substance after time 't' = ?
= Initial concentration = 0.00440 M
Putting values in above equation, we get:
![0.660=\frac{1}{865}\left (\frac{1}{[A]}-\frac{1}{(0.00440)}\right)](https://tex.z-dn.net/?f=0.660%3D%5Cfrac%7B1%7D%7B865%7D%5Cleft%20%28%5Cfrac%7B1%7D%7B%5BA%5D%7D-%5Cfrac%7B1%7D%7B%280.00440%29%7D%5Cright%29)
![[A]=0.00125M](https://tex.z-dn.net/?f=%5BA%5D%3D0.00125M)
Hence, the concentration of A after 865 seconds is 0.00125 M