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Protons = 7Neutrons = 8Electrons = 7This N-15 isotope has an atomic number of 7 - this is equivalent to the number of protons.The atom is not charged and so will have the same number of electrons as proto...

DNA is made up of two strands that form a double helix structure. DNA is comprised of four different nucleotides, all made up of a sugar and phosphate group and one of four bases - A, T, C or G. These bas...

The mitochondria are where cellular respiration takes place. This organelle contains all the enzymes necessary for aerobic respiration (respiration that uses oxygen) to take place and produce energy for t...

This question tests your knowledge on weak acids, pH, Ka and equilibrium. (Note: E notation has been used, E-3 is x10^-3 ). Formic acid is a weak acid and so does not fully dissociate, the degre...

the mean is the average value when you add together all of the numbers in your sample and then divide the result by the amount of numbers in the sample.the mode is the most common number in the sample, th...