Search our library of homework questions

Top answers

All subjects

All levels

Explain why having more red blood cells per cm3 of blood is an advantage to an athlete. (3 Marks)

Red Blood Cells (RBC’s) contain haemoglobin. Therefore, more RBC’s results in more haemoglobin present.Haemoglobin carries oxygen, therefore, more oxygen can be transported to cells such as muscle cells.M...

Answered by Bradley-James G. • Biology tutor

23550 Views

How accurate is it to say that the Weimar Republic never enjoyed popular support?

Support for constitution:High turnout rates or votes lowest of 75%Probably higher than actual support for government – people liked the democratic ideal – too idealistic
Support for government:1924-2...

Answered by Allan P. • History tutor

4056 Views

State the relative charge and relative mass of a proton, of a neutron and of an electron. In terms of particles, explain the relationship between two isotopes of the same element. Explain why these isotopes have identical chemical properties.

Proton: Relative Mass = 1, Relative Charge = +1Neutron: Relative Mass = 1, Relative Charge = 0Electron: Relative Mass = ~1/1870, Relative Charge = -1
Isotopes vary in the number of neutrons and there...

Answered by Edward P. • Chemistry tutor

11671 Views

Explain the physical properties of graphite in terms of its structure and bonding

Graphite is a giant covalent molecule. This means it has many atoms joined together by covalent bonds. Graphite consists of layers of carbon atoms joined together by

Answered by Eliza D. • Chemistry tutor

15298 Views

Edexcel November 2016 1H Maths. Q27

The sphere has radius 6 cm. The solid cylinder has a base radius of 3cm and a height of h cm. The total surface area of the cylinder is twice the total surface area of the sphere. Work out the ratio of th...

Answered by Josh V. • Maths tutor

12576 Views