Which one of these equations is balanced? a. Zn + 2hcl - - > ZnCl2 + H2 b. S8 + 24F2 - - > 8SF6

a

b

a and b

neither

The tendency of an element to react is closely related to? A. its atomic mass B. attractions between its atoms C. the number of valences electrons in atoms of the element D. the ratio of protons to neutrons in atoms of the element

Ill upvote For which of the following is the velocity constant (speed/direction does not change) ? Question 5 options: A cat escaping a dog by running in a straight line and then up a tree at a constant speed of 30 mph A cat escaping a dog by

How to change ml to l and l to ml?

77. In the early days of automobiles, illumination at night was provided by burning acetylene, C2H2. Though no longer used as auto headlamps, acetylene is still used as a source of light by some cave explorers.

How many grams of O2 must be placed in a 3.33 liter container in order to exert a pressure of 2.46 atm at 27°C?

A substance is on its fifth half-life. Which approximates the percentages of radioactive and stable isotopes, respectively? 96.9%; 3.1% 3.1%; 96.9% 12.5%; 87.5% 87.5%; 12.5% Need an answer fast

Which describes an object in projectile motion? Check all that apply. Gravity acts to pull the object down. The object moves in a straight path. The forward velocity of the object is 0 m/s. The object's inertia carries it forward.

How are blood transported in blood?

Is human cloning forbidden and why?

What do we beileve is at the center of the milky way A) two stars that have collided together B) a cluster of stars C) A black hole D) A collapsed planet