Determine the empirical and molecular formula for a compound containing 26.1 % carbon, 4.3% hydrogen, and 69.6% oxygen. Molar Mass = 138 g/mol.

Which compound contains both ionic and covalent bonds? a) hbr b)cbr4 c)nabr d) naoh

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Which of the following would not diffuse through the plasma membrane by means of simple diffusion? 1 oxygen 2 glucose 3 a steroid hormone 4 a lipid soluble vitamin