When we know the life expectancy of a nation, this allows us to do which of the following? Gain an understanding of the impact of specific diseases Compare it to the life expectancy of other nations Accurately predict the life span of the nation's population Understand the impact of disabilities on people of the nation

59 point The type of bond that would form from the transfer of an electron from one atom to another is a(n) ___ covalent ionic atomic hydrogen isotopic

461 point Which of the following is a property of bases? Bases feel slippery when touched, Bases have a sharp or sour taste, Bases taste sweet. Bases release \( H^{+} \)when dissolved in a liquid Bases have a pH reading below 7,0 .

M4.2.1 Encuentra todos los valores de \( x \) en los cuales la función siguiente es discontinua en el intervalo \( (-\infty, 0) \) \( h(x)=\left\{\begin{array}{lll}x^{2}-3 x+2 & \text { si } & x \leq-2 \\ +4 & \text { si } & -2

1 point Heartburn occurs when stomach acid escapes the stomach and burns the tissues of the esophagus. Baking soda is sometimes used as an antacid. How does baking soda help relieve symptoms of heartburn? The baking soda is able to coat the lining of the esophagus thereby protecting it from the acid. The baking soda is serving as a buffer to remove excess \( \mathrm{H}^{+} \)ions from stomach acid. The baking soda relaxes the stomach muscles. The baking soda releases salt which draws more water into the esophagus thereby diluting the acid. The baking soda increases the acidity of the stomach. Previous

4. Hay 5 cajas, cada una con 10 piezas. La primera caja tiene 2 piezas defectuosas, la segunda 3, la tercera 1, la cuarta 4 y la quinta ninguna. Se elige una caja al azar y se extrae una pieza: a. ¿Cuál es la probabilidad de que la pieza sea defectuosa? b. Si se obtiene una pieza defectuosa ¿cuál es la probabilidad que sea de la tercera caja?