Question 4 (1 point) \begin{tabular}{|l|}\hline Which usten \\ Which of the following is an amphiprotic substance? \\ H3PO4 \\ PO43- \\ HPO42- \end{tabular}

II legame covalente polare si può * 1 punto formare tra: atomi dello stesso elemento atomi con la stessa struttura elettronica ioni con carica di segno opposto atomi con diversa elettronegatività

Which group of chemicals are known as "ozone- depleting chemicals"? Halogens Rare Earnh Elements

D) 22.5 g ¿Cuántos gramos hay en 0.750 moles de glucosa y en 1.5 moles de anhidrido carbónico? A) 180 g y 44 g B) 360 g y 88 g C) 135 g y 66 g D) \( 6.022 \times 10^{-23} \) y \( 3.011 \times 10^{-23} \)

(12.3) What is the major product of the reaction shown below? \( \mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{CH}=\mathrm{CH}_{2}+\mathrm{H}_{2} \mathrm{O} \xrightarrow{\mathrm{H}^{+}} \)

iv). \( 20 \mathrm{~cm}^{3} \) of water off density \( 1 \mathrm{~g} / \mathrm{cm}^{3} \) is mixed with \( 30 \mathrm{~cm}^{3} \) of alcohol of density \( 0.8 \mathrm{~g} / \mathrm{cm}^{3} \) Find the density of the mixture in \( \mathrm{Kg} / \mathrm{m}^{3} \)