How many grams of ammonia will be required to produce 12.0g of water given the balanced chemical equation seen below? Don't enter units, just enter the correct number in decimal format to the correct number of significant figures.

What is a metal replacement reaction

How have the greenhouse gasses increased from the year 2000 to 2018

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.