11. When the periodic table was first developed, scientists grouped elements with similar characteristics in vertical columns. Which
other element has similar characteristics to sodium (Na)?
A. cesium (Cs)
B. bromine (Br)
C. magnesium (Mg)

Alarge marble is dropped in a graduated cylinder with 35ml of water in it. the water level increases to 49ml. what is the volume of the marble

Select the correct answer. when carbon dioxide dissolves in water, it sometimes reacts with water to form carbonic acid as in this balanced equation: co2 + h2o → h2co3. if 495 milliliters of carbon dioxide at 25°c and 101.3 kilopascals reacts with excess water, what is the theoretical yield of carbonic acid? use the periodic table and the ideal gas resource a. 0.889 g b. 1.10g c. 1.27g d. 2.02g what's the answer! quick!

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer