Top answers

What type of blood does the pulmonary artery contain?

Deoxygenated blood
KS
2763 Views

What are the 2 methods used to manufacture ethanol? What are the advantages and disadvantages of both?

The hydration of ethene: Ethene and steam are passed over a catalyst - concentrated phosphoric acid (H 3 PO 4 ) - at 300 O C and 60-70 atmospheres. This process is fast, continuous and gives a pure product b...
JP
Answered by James P. • Chemistry tutor
10220 Views

How is the the small intestine adapted for absorption?

The Ileum is long (up to 7m!) and has a very high surface area due to the presence of many villi and microvilli . A single villus is made up of many cells, each with lots of microvilli, and have many blood v...
JP
Answered by James P. • Biology tutor
26571 Views

I buy a car from a dealership for £3500. The car depreciates in value for every year I own it. What is the value of the car after I have owned it for 18 months if it depreciates at a rate of 5 percent?

This is a compound interest problem. Here we have to put 18 months in terms of years. There are 12 months in a year, so 18 months is a year and 6 months. 6 months is half a year, so 18 months represents a ye...
LM
Answered by Lauren M. • Maths tutor
4131 Views

In triangle XYZ: XZ = 10 cm; YZ = 8 cm; cos Z = 1/8. Calculate the length of XY.

We can use the cosine rule to determine the lenght of XY. XY 2 = 10 2 +8 2 -2 10 8 cos ZXY 2 = 100+64-180 (1/8) = 144XY = 12
VH
Answered by Vencel H. • Maths tutor
7770 Views