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What is the difference between atom economy and percentage yield?

First I will start by defining the two terms. Atom economy is calculated by dividing the total relative molecular mass of the desired product over the total relative molecular mass of the reactants. You can ...
VT
6146 Views

What is diffusion, and what are the factors that affect the rate of diffusion

Diffusion is the spreading out of the particles of any substance in solution, or particles of a gas, resulting in a net movement from an area of higher concentration to an area of lower concentration . This ...
DJ
Answered by Delwin J. • Biology tutor
3105 Views

There are a number of push and pull factors that cause rapid urbanisation in lowincome developing countries (LIDCs). Explain how two push factors cause rapid urbanisation in LIDCs.

One push factor that can cause rapid urbanisation in LIDCs are the lower levels of education quality within rural areas. For example in China, rural Tibet has an illiteracy rate of 43% compared with the more...
HM
Answered by Hannah M. • Geography tutor
4505 Views

What is the Euthyphro dilemma, and why does it pose a problem for theists?

The Euthyphro dilemma is an issue from Plato's Euthyphro dialogue. It is a problem concerning whether things are morally obligatory because of their nature, or because God (or gods) will them. Socrates asks ...
DG
14169 Views

John bought 7 bags of cement and 3 bags of gravel with the total weight of 215kgs. Shona bought 5 bags of cement and 4 bags of gravel with the total weight of 200kgs. How much does 1 bag of cement weigh and how much does 1 bag of gravel weigh?

Step 1: Write down the information we got in a simplified form => cement (c) .... 7 bags .... 5 bags, gravel (g) ...... 3 bags .... 4 bags, total weight .. 215kgs ... 200kgs ... Step 2: Transfer into 2 eq...
JV
Answered by Jana V. • Maths tutor
7829 Views