How many moles of Al would react with 9 moles of HCl in the reaction described by this chemical equation? 2Al + 6HCl → 2AlCl3 + 3H2 O A. 6 B. 3 A. 6
B. 3
C. 1
D. 2​

Can somebody explain to me how newton's 3rd law relates to momentum? ~ap physics 1

Afigure skater is rotating at a rate of 200 revolutions per minute. what is the angular speed, in units of rad/s? 20.9 12000 200 3.33

Total solidification times of three casting geometries are to be compared: a sphere, a cylinder, in which the length-to-diameter ration - 1.0, and a cube. volume = 1000 cm^3 for all three shhapes, and the same casting alloy is used. a) determine the solidification times of each geometry b) based on the results of part (a), which geometric element would make the best riser? c) if the mold constant = 3.5 min/cm^2 in chvorinov's rule, compute the total solidification time for each casting.