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A point A lies on the line y = 2x^2 - 8x + 2. A has y-coordinate (-4). Find all possible values for the x-coordinate of A.

The point A = (x', y') lies on the line y = 2x² - 8x +2. And we are given that y' = -4.Therefore we have tha...

Answered by Hasnat K. • Maths tutor

2433 Views

50.0 g of propene reacts with hydrochloric acid to produce 1-chloropropane. Calculate the percentage yield if only 54.0g is made.

STEPS:Write the equation CH3CHCH2 + HCl -> CH3CH2CH2Cl + H2 (where 1-chloropropane made by electrophilic addition reaction)Identify number of moles of propene used. So number of moles is m/ Mr= 50.0g ...

Answered by Ravinder K. • Chemistry tutor

2438 Views

In the age of modern healthcare, every time a patient dies after a routine operation or procedure, it’s a case of medical error.

This is a partial response for you to read and get a feel for the type of response examiners are looking for. This extract is around a 4A in the BMAT mark scheme. With today's surg...

Answered by Harry C. • BMAT (BioMedical Admissions) tutor

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Why was the Weimar Republic (1919-1933) not an economically prosperous government?

The Wiemar Republic was not economically prosperous because in 1923 it experienced hyperinflation. This is when inflation reaches over 11% but in this case inflation got so high money was practically wort...

Answered by Anna E. • History tutor

1651 Views

Describe the role of DNA polymerase in DNA replication.

DNA polymerase is an enzyme that catalyses the synthesis of DNA molecules from free nucleotides. After DNA helicase unwinds the DNA molecule, DNA polymerase reads the existing DNA strands and incorporates...

Answered by Tamsin W. • Biology tutor

14672 Views