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What is the concentration of 0.4 moles of 25cm3 ethanoic acid?

concentration = moles / volume must convert volume into litres 1 litre = 1000cm3 (divide by 1000) c= n/v = 0.4/0.025 = 16mol/l
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Answered by Emma M. • Chemistry tutor
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Why are there different impacts of flooding in MEDCs and LEDCs?

There is a difference in the impact of flooding between MEDCs and LEDCs because of socio econmomic factors. MEDCs have better flood warning systems to alert the population to the possibility of a flood occur...
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Answered by Matthew T. • Geography tutor
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What is an isotope?

Isotopes of an element exist when the atoms of an element have different numbers of neutrons, or in other words the same atomic number but a different mass number.
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Answered by Matthew T. • Physics tutor
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What is the difference between speed and velocity?

Speed is how fast an object is moving, whereas velocity is an objects speed in a given direction.
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Answered by Matthew T. • Physics tutor
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Solve the equation ((2x+3)/(x-4))-((2x-8)/(2x+1))=1

Step 1: Multiply everything by x-4 to give (2x+3) - ((2x-8)(x-4)/2x+1)=(x-4) Step2: Multiply everything by 2x+1 to give (2x+3)(2x+1)-(2x-8)(x-4)=(x-4)(2x+1) Step 3: Multiply out the brackets to give (4x 2 +8...
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Answered by Matthew T. • Maths tutor
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