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If we burn 3 moles of carbon in air (as per the equation), what mass (in grams) of carbon dioxide will be produced? What volume will this gas occupy at standard temperature and pressure?

So firstly, we assume that the oxygen is in excess (i.e. the amount of oxygen reacting won't limit the amount of carbon that can react), so we know that exactly 3 moles of carbon will be burnt. Then, from th...
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Answered by Sam H. • Chemistry tutor
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Explain how a change in the primary structure may result in a non functional enzyme

A change in the primary structure means there has been a change in the amino acid sequence.This may cause different hydrogen bonding to occur, leading to a different secondary structure.This may lead to diff...
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Answered by Sanskriti S. • Biology tutor
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What is polymorphism in regards to Object Oriented Programming (OOP)? Provide an example.

The word ‘polymorphism’ literally means ‘a state of having many shapes’ or ‘the capacity to take on different forms’. When applied to object oriented programming languages like Java, it describes a language’...
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Answered by Paras R. • Computing tutor
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A particle of mass 5kg is held at rests on a slope inclined at 30 degrees to the horizontal. The coefficient of friction for the slope is 0.7, determine whether the particle will move when released.

Frictional force acting: F Max = u R = 0.7 x 5 x 9.81 x cos(30) F Max = 29.7N Weight acting down the slope: F = 5 x 9.81 x sin(30)F = 24.5N Frictional max is greater than the weight acting down the slope, th...
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Answered by Myles I. • Maths tutor
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How does a metal in powder form react faster with acid than the same metal in strips/blocks?

This is due to the metal in the powder form having a larger surface area. There are 4 ways to increase the rate of reaction. Increasing the concentration of the reactants, increasing the temperature, adding ...
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Answered by Amy N. • Chemistry tutor
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