It’s time to make the ice pieces. For ice piece 1, place 2 teaspoons of water into one of the spaces in the ice cube tray. To make ice piece 2, place 2 teaspoons of water into the sealable plastic bag. Carefully squeeze as much of the air out of the bag as possible without spilling any water. Then seal the bag. Place the sealed bag on a flat surface in the freezer. Place the ice cube tray in the freezer at the same time. Leave both in the freezer for four hours. Record the start time and the time when you can remove the ice.

What does the xylem do? stores the glucose captures the sunlight absorbs oxygen into the leaf carries water from the roots to the leaves

Liquid ammonia is produced at high temperatures and under great pressure in a tank by passing a mixture of nitrogen gas and hydrogen gas over an iron catalyst. the reaction is represented by the following equation. n2(g) + 3h2(g) → 2nh3(g) changing all but one experimental condition will affect the amount of ammonia produced. that condition is a) increasing the concentration of both reactants b) changing the temperature within the tank c) decreasing the pressure within the tank. d) increasing only the amount of nitrogen present.

Molecular iodine, i2(g), dissociates into iodine atoms at 625 k with a first-order rate constant of 0.271 s−1. part a part complete what is the half-life for this reaction?