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What is meant by equilibrium

When a reaction is in equilibrium, it means the rate of the forward reaction is equal to the rate of the backwards reaction. The concentrations of the reactants and products remain constant, but this does no...
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Reaction between a metal and acid gives?

Metal + Acid --> Metal salt + H2 (g)E.g. Cu + HCl --> CuCl2 + H2
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The student did another experiment using 20 cm3 of sodium hydroxide solution with a concentration of 0.18 mol/dm3 . Relative formula mass (Mr) of NaOH = 40 Calculate the mass of sodium hydroxide in 20 cm3 of this solution.

Answer= 0.144g Working out: mol= conc x volume (in dm^3)mass = mol x RFFSo,mol = 0.18 x (20/1000) = 0.0036mol Mass= 0.036 x 40 = 0.144g
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State the functions of five organelles in animal cells

Nucleus- controls the activity of the cellMitochondria- site of aerobic respirationCytoplasm- site of biochemical reactions, including anaerobic respiration Cell membrane- Allows transport of materials into ...
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How are red blood cells adapted to carrying oxygen

Biconcave discs- to increase surface area for oxygen carriage Haemoglobin- increases affinity for oxygen uptake at the lungs. However, at the respiring tissues, the increased CO2 concentration allow release ...
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