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Chemistry
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PharmaPlus, a drug developer, is required by law to carry out clinical trials on the novel drug ‘AccuPreasure’. AccuPreasure is to be marketed for control of high blood pressure. Give three questions that clinical trials are designed to answer.

Is the drug safe for human use?

Are there any side-effects? How significant are these?

What is the safe-dose? What is the maximum concentration of A...

Answered by Joseph M. Chemistry tutor
1848 Views

What are the differences between simple covalent and giant covalent bonding?

In terms of the structure, simple covalent substances are made up of molecules. These molecules are bonded together by a shared pair of electrons, which forms the strong covalent bond. Between molecules, ...

Answered by Harry H. Chemistry tutor
73378 Views

What is the structure of an atom?

Atoms are really tiny particles that make up all substances in the universe. An element is made of one type of atom. An atom has a small central nucleus made up of smaller sub-atomic particles called prot...

Answered by Emma T. Chemistry tutor
2245 Views

Phosphorus is burned in air at 500 ºC to produce gaseous phosphorus(V) oxide. 220 g of phosphorus was reacted with an excess of air. Calculate the volume, in m3, of gaseous phosphorus(V) oxide produced

Additional information given:

P4 (s) + 5O2  (g) = P4O10 (g)     Pressure = 101kPa     Temp = 500oC     gas constant R = 8.31JK-1mol...

Answered by Natalie B. Chemistry tutor
3879 Views

What is the difference between an ionic and covalent bond?

Ionic: Metal and non Metal bond fomred , Metal DONATES an electron. electrostatic attraction between oppositely charged ions in a chemical compound Covalent: Bond between two non metals (similar electrone...

Answered by Maria A. Chemistry tutor
5619 Views

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