Abaseball is thrown a distance of 20 meters. what is its speed if it takes 0.5seconds to cover the distance

Match each object to its description: a. coma of a comet b. comet tail c. oort cloud haze surrounding a nucleus created by solar wind. hypothetical sphere around the solar system

As we move from left to right across the periodic table, what is the general trend? a) atomic radii increase. b) electronegavitiy decreases. c) nuclear shielding increases. d) metallic character decreases.

Asample of calcium chloride (cacla) contains 100.2 grams of calcium (ca) and 177.3 grams of chlorine (co. what is the percent composition of chlorine 2.510% 36.10% 56.50% 63.89%