10. Which one of the following is a property of most metals? A) low melting point B) brittleness C) high electronegativi

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10 Which One Of The Following Is A Property Of Most Metals A Low Melting Point B Brittleness C High Electronegativi 1 (42.39 KiB) Viewed 12 times

10. Which one of the following is a property of most metals? A) low melting point B) brittleness C) high electronegativity D) thermal conductivity 11. Of the species below, only A) HCI B) RD 2504 C) Ar D) KOH E) Na is not an electrolyte The next problem is related to the following graph. The graph shows the vapor pressure of several liquids as a function of temperature. 00 мес Nabang DOO point Diethyl ther Vapor porto) Ethylaco ethanol 400 w Exhylene 20 100 40 50 Temperatura 12. The normal boiling point of a liquid is the temperature where a vapor pressure is equal to the external pressure, 1.0 atm (760 torr). From the vapor pressure graph shown above, what's the approximate boiling point of water when the external pressure is reduced to 0.5 atm? Find the closet one from followings. A) 20 °C B) 40 °C C) 60 °C D) 80 °C E) 100 °C 13. What's the molarity (M) of 21.0 g of Mg(NO3)2 (formula weight 148.3 g/mol) in 250 mL aqueous solution? See the formula in the last page. (a) 10.5 (b) 0.042 (c) 0.0708 (d) 0.566