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W:B = 2:5 Total of 21 litres of paint. We want a ratio of W:B = 1:4 = 2:8Therefore we must add 3 parts of blue paint2 + 5 = 7 parts total7 parts = 21L1 part = 3L3 parts = 9LTher...
We need to calculate how many moles of HCl are being titrated. This is the volume in dm3 times the concentration (trick: you can do dimensional analysis if unsure of the formula): number of moles of HCl =...
so we need to know the understanding of BODMAS, hoe to add fractions, how to multiply fractions, how to simplify fractions.Answer:9/7
i) We must differentiate the equation and set it equal to 0 to find stationery points: dy/dx = 3x2 + 6x + 24=0 Note we can take out a factor of 3 x2+ 2x - 8=0 Fact...
A waterfall, labelled A in resource 1, normally forms in the upper valley of rivers where alternating bands of hard and soft rock occur along the river bed. The bands of softer rock are eroded at a faster...
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