Answer:
Save the *minerals* used to extract metals.
Explanation: In IUPAC, E-Z convention is given for describing the cis - trans notation to the isomers. According to CIP rule, the groups on the doubly bonded carbon atoms are given priorities based on the the atomic masses of first connected atom.
If the highest priority groups are on the same side, it is known as Z-form and if the highest priority groups are on opposite side, it is known as E-form.
We are given (Z)-3-bromo-6-methyl-2-heptene, in this the highest priority groups are bromine on one side and methyl- group on another side.
The structure is provided in the image below.
Answer:
0.0447 moles of Aluminum
Explanation:
Break this down to an ionic equation (which may not exist in the real world but it will give you the mol ratios).
Al2(SO4)3 ===> 2Al^(+3) + 3 SO4^(-2)
Now write the equation showing the actual number of moles of SO4^(-2) present. Indicate the Al moles with an x
Al2(SO4)3 ===> 2Al^(+3) + 3 SO4^(-2)
x 0.0670
Now set up a proportion
2/x = 3/0.0670 Cross multiply
2*0.0670 = 3x Simplify the left
0.134 = 3x Divide both sides by 3
0.134/3 = 3x/3 Divide
0.0447 = x
there are 0.0447 moles of Aluminum
Answer:
Explanation:
The specific heats of water and steel are
Assuming that the water and steel are into an <em>adiabatic calorimeter</em> (there's no heat transferred to the enviroment), the temperature of both is identical when the system gets to the equilibrium
An energy balance can be written as
Replacing
Then, the temperature
For a 1st order reaction:
In(n/n0)= -k * (time difference)
so k= - In (n/n0)/ (t/t0)
n is concentration at time t and n0 is the concentration at an earlier time t0.
where k is constant.