The period of an element is the amount of time is it takes for half of radioactive isotope to decay. true or false? If false, make a statement true

Do humans really have a third eye

What is the molarity of a solution containing 8.0 miles of solute in 500. mL of solution

Carbon dioxide gas is produced by the reaction of oxygen gas and solid carbon. Write a balanced chemical equation for this reaction

Write the chemical equation for the following word equations. Include symbols for physical states in the equation. a. solid zinc sulfide + oxygen gas → solid zinc oxide + sulfur dioxide gas.

Which acid is the acid usually found in your stomach? A. hydrochloric acid B. acetic acid c. nitric acid D. phosphoric acid

What does ice cream melt on a hot day which type of thermal energy transfer does this melting represents

For which purpose do biochemists insert human genes into bacteria? to find a cure for the common cold to produce insulin for diabetics to kill resistant strains of bacteria to evolve certain species of bacteria

Cracks in rocks chemical or mechanical

A large boulder falls from an underwater ledge and crashes on the floor of the ocean. A pod of dolphins is 800 meters away. Determine how long it takes for the sound of the crash to reach the dolphins. A) 0.5 sec B) 0.3 sec C) 2.3 sec D) 1.9 sec

Given 4.80g of ammonium carbonate, find: Number of moles of the compound Number of moles of ammonium ions Number of moles of carbonate ions Number of moles of hydrogen atoms Number of hydrogen atoms