Suppose you carry out a titration involving 2.50 molar NaOH and an unknown concentration of HBr. To bring the reaction to its end point, you add 49.2 milliliters of NaOH to 35.0 milliliters of HBr. What is the concentration of the HBr solution? OA 0.711 M OB. 1.41 M O C. 1.78 M OD. 3.51 M​

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under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

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