Answer:
Option 1- Create Laws
Explanation:
If you create laws (assuming that these laws will be enforced properly), people will do less to harm the environment because there will be consequences. If you choose Option 2- Clean-ups, there is no way you can pick up every single piece of trash or completely rid the Earth of pollution. Just because you are cleaning doesn't mean that factories will stop making pollution, people will stop littering, and climate change will stop. Both options need to be done together but if that is not possible, the first option is more effective.
Answer:
A. Robots go places humans are unable to go.
Initial Conditions:
Volume=v1= 3.5 L
Temperature= T1 =298K
Final Conditions:
Temperature= T2= 285K
Volume= v2= ?
Use the general gas equation;
P1*v1/T1 = P2*v2/T2
Note:
Pressure is constant
so the equation become,
v1/T1 = v2/T2
3.5/298 = v2/285
v2 = 3.347 L
Answer : The precipitate will not be formed when these solutions are mixed.
Explanation :
The chemical equation for the reaction of calcium chloride and lithium sulfate follows:
We are given:
Concentration of calcium ion =
Concentration of sulfate ion =
The salt produced is calcium sulfate.
The equation follows:
The expression of (ionic product) for above equation follows:
Putting values of the concentrations in above expression, we get:
There are 3 conditions:
- When ; the reaction is product favored. (No precipitation)
- When ; the reaction is reactant favored. (Precipitation)
- When ; the reaction is in equilibrium. (Sparingly soluble)
As, the . The above reaction is product favored. This means that no salt or precipitate will be formed.
Hence, the precipitate will not be formed when these solutions are mixed.