The answer to this question would be: 2.36 mol
To answer this question, you need to know the molecular weight of copper. Molecular weight determines how much the weight of 1 mol of a molecule has. Copper molecular weight about 63.5g/mol. Then, the amount of mol in 150g copper should be: 150g / (63.5g/mol)= 2.36 mol
Answer:
Explanation:
It has Redcued the caron dioxde emission,
- very low Cars and essential travels are allowed controlles CO2 emission
- most of international fligts are cancelled and CO2 emission by these are reduced
- to keep social distancing people are shifting to the biyccles rather than transportation
- several industries have stoped working during lock down and prodcution rates have limted with limted CO2 emission,
- People are stoped partying such as barbeqe where they burn coal to CO2 has also redcued.
- Most of people are working online( work from home) as result they are having much time for planting their gardens very well as reuslt the CO2 level has decreased.
- construction work has reduced, which decreased the demand for tree as result tress are not destroyed and these plants reduce CO2 in enviornment.
thse are just some examples you can find more
The substance which has definite composition with definite physical and chemical properties is said to be pure substance. These substances are not separated by the different physical techniques such as filtration, distillation, evaporation etc.
The clear water pumped from a deep aquifer is a pure substance because water is a pure compound which consist of constant single type of atoms or group of atoms and water has specific value of boiling and melting point. Water is also not separated into units or constituents by physical technique.
Hence, clear water pumped from a deep aquifer is a pure substance.