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no energy is gained or lost during a chemical reaction.
in a chemical reaction no mass is gained or lost when substances react to form new products....
a class of letters or speech sounds (b, c, d, f, g, h, j, k, l, m, n, p, q, r, s, t, v, w, x, y...
a class of letters or speech sounds (b, c, d, f, g, h, j, k, l, m, n, p, q, r, s, t, v, w, x, y...
the difference between any two consecutive terms in an arithmetic sequence. The constant...
people with specialist skills who work for a business for short periods or on a part-time basis...
the situation that exists when the last rand that is spent on one product gives the same...