Sink, because when you drop a rock into a liquid it sinks, coal is like rocks because both solids are heavy weight!!
Hope this helps!
HBr molar mass is 80.9 g/mol
this means in 80.9 g - 1 mol of HBr
1 mol consists of 6.022 x 10²³ molecules of HBr
that means in 80.9 g HBr there are 6.022 x 10²³ molecules of HBr
therefore in 42.5 g of HBr there are 6.022 x 10²³/80.9 * 42.5
the number of HBr molecules are therefore - 3.16 x 10²³ HBr molecules
Which mento will explode first?
Answer:
Covalent compounds are held by intermolecular forces while network solids are held by strong bonds in unit cells which are closely packed together.
Explanation:
Covalent compound molecules are held by vanderwaals forces which are relatively weak but strong enough to hold some covalent molecules together in the solid state. However, network solids contain atom to atom covalent bonds arranged in an orderly manner and regular repeating unit cells to form a rigid three dimensional network solid.
Answer:
D. 8.3 x 10-4
Explanation:
Hello!
In this case, since the rate law is written solving for the rate constant as:
![k=\frac{r}{[A]^2[B]}](https://tex.z-dn.net/?f=k%3D%5Cfrac%7Br%7D%7B%5BA%5D%5E2%5BB%5D%7D)
Thus, we plug the rate and concentrations to obtain:
![k=\frac{0.01M/s}{(2M)^2(3M)}\\\\k=8.3x10^{-4}M^{-2}s^{-1}](https://tex.z-dn.net/?f=k%3D%5Cfrac%7B0.01M%2Fs%7D%7B%282M%29%5E2%283M%29%7D%5C%5C%5C%5Ck%3D8.3x10%5E%7B-4%7DM%5E%7B-2%7Ds%5E%7B-1%7D)
Therefore, the answer would be D. 8.3 x 10-4
Best regards!