El agua oxigenada (H2O2) es una sustancia muy utilizada en medicina y cosméticos. Se descompone mediante la acción enzimática de la catalasa, produciendo agua y oxígeno molecular (O2). Su poder desinfectante se debe a la acción del oxígeno producido. Si para desinfectar una herida de necesitan 25 moles de O2 ¿cuántos mL de agua oxigenada se requieren emplear? Considera que la densidad del H2O2 es 1.45 g/mL (2 ptos). H2O2 (l) > O2 (g) + H2O (l)

Which of the following statements concerning the influence of culture on ethnic identity formation is accurate? a. one will reject ethnic identity if cultural stereotypes are encountered. b. if one’s ethnic city is different from the dominant cultural group, then one’s ethnic identity you will become weekend. c. if an the ethnic group is excepted by dominant culture, then ethnic identity formation can be a difficult process. d. similarity to the dominant culture can determine how easy it is for one to except ethnic differences.

The alkali metals (group 1) consist of lithium (3), sodium (11), potassium (19), rubidium (37), cesium (55), and francium (87). they are soft, metallic solids with low densities and low melting points. based on the data shown in figure 1, how many valence electrons do alkali metals share?

Apiece of metal with a length of 1.42 cm was measured using four different instruments. which of the following measurements is the most accurate?