06. A student investigated one property of the alkanes CH CH and CuHa This is the method used
1. Pour 20 cm of C. Ha into a separating funnel.
2. Open the top of the separating funnel and start a timer
3. Stop the time when the level ofC. Ha reaches line X
4. Repeat steps 1 to 3 with CH and CH
Figure 5 shows the apparatus used.
Figures
Separating funnel
20 cm C. HU
Line X
Tap
The level of Cho takes 6.4 seconds to reach line X
Predict the trend in times for the other two alkanes.
Give one reason for your answer
[2 marks]
Trend
Reason

An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree of polarity ?

Chlorine and water react to form hydrogen chloride and oxygen, like this: 2cl2 (g) + 2h2o (g) → 4hcl (g) + o2 (g) also, a chemist finds that at a certain temperature the equilibrium mixture of chlorine, water, hydrogen chloride, and oxygen has the following composition: compound concentration at equilibrium cl2 0.55m h2o 0.57m hcl 0.53m o2 0.34m calculate the value of the equilibrium constant kc for this reaction. round your answer to 2 significant digits.

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