To dazzle chemistry students, Mr. Turner collected volumes of ammonia and carbon dioxide. As the two colorless gases were combined in a closed two-liter bottle with a small amount of ammonium hydroxide, the chemistry students watched in amzement
at the growth of whitish crystals inside the bottle.
Mr. Turner wrote this equation to represent the reaction in the bottle:
CO2(g) + NH3(g) + H2O(l) - NH HCO3(s)
What type of reaction occurred in the bottle?
A)
synthesis
B)
combustion
C) decomposition
D)
triple displacement

An object displaces 652 ml of water. the volume of the object is: 0.652 cm³ 6.52 cm³ 65.2 cm³ 652 cm³

For a family dinner, jose’s mom baked a loaf of bread. during the meal, his grandmother commented, “this bread is so dense! ” what do you think his grandmother meant by the word dense? you have some ideas regarding density already, but this experiment will enrich your understanding of the relationship between mass, volume and the density of objects. when making measurements in this experiment we will be using si units, the international system of units. the purpose of using si units is to have the ability to communicate and compare data results with other experiments without having to make conversions. measurement symbol si unit length m meter mass kg kilogram volume l liters density kg/l kilograms per liter any calculations that are performed during this experiment will ultimately be reported in scientific notation. recall that scientific notation is extremely important when we have data that is extremely small or large. scientists rely on a standard form of communication to quickly make hypotheses and judgements based on data. what is the density of block a? a0kg/l what is the density of block b? a1kg/l what is the density of block c? a2kg/l what is the density of block d? a3kg/l what is the density of block e? a4kg/l which block is the densest? a5

Akno3 solution containing 51 g of kno3 per 100.0 g of water is cooled from 40 ∘c to 0 ∘c. what will happen during cooling?