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Why does the bacteria in a vaccine not harm us, but instead make us immune to diseases?

In order to build immunity to a bacteria only a tiny amount of 'inactivated' bacteria is put into the vaccine. Because the bacteria is dead/inactivated its not able to cause harm to our body but it will s...

GH
Answered by Georgia H. Biology tutor
2304 Views

15/7 + 5/4

Find the lowest common denominator between the two fractions, which is 28 (74 = 28).Multiply the fractions numerator (15 and 5) by the same number that you have used to multiply the denominator when f...

AD
Answered by Allan D. Maths tutor
6274 Views

Explain why ionic compounds (e.g. NaCl) are soluble, and why they conduct electricity in this state.

Ionic compounds have a 'giant' ionic lattice structure. 'Giant' just essentially means that a basic unit is being repeated. In the case of NaCl, the ionic lattice would consist of the ions Na+ and Cl-. Wa...

Answered by Chemistry tutor
5006 Views

Discuss and compare the theme of oppression within The Yellow Wallpaper by Charlotte Perkins Gilman and The Bloody Chamber by Angela Carter

Oppression and subsequent liberation is evident in both texts, however, the type and measure of the oppression varies even though both protagonists are subject to their husbands barbarity; The Bloody ...

AC
Answered by Alex C. English tutor
5003 Views

Carbon dioxide is a gas at room temperature while silicon dioxide is a solid at room temperature with a melting point of 1770°C. Explain this by comparing their particles and those forces between these particles.

Although C and Si are both group 4 elements, C is much smaller than Si and can form double bonds with two oxygen atoms whereas Si is larger and so forms single bonds with four oxygen atoms. This means th...

Answered by Chemistry tutor
30501 Views

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