Queenroot
I complete the Squar3
Yeah that's why I told you not to write things that aren't relevant to the questionDoes anyone know if one gets marked down for having extra info (info not required)
Yeah that's why I told you not to write things that aren't relevant to the questionDoes anyone know if one gets marked down for having extra info (info not required)
Unbalanced equation so no band 6Oo I'm a little rusty with Solvay but i'll bite (without looking through my notes!)
The Solvay Process describes the industrial conversion of the raw materials ammonia, limestone and brine into sodium carbonate over a series of steps. The net chemical reaction that occurs is;
NaCl + CaCO3 --> Na2CO3 + CaCl2
While there is some market for the calcium chloride byproduct, the supply exceeds the demand. This is an issue as if it is dumped into rivers and waterways it can significantly increase the level of TDS, hence reducing water quality and negatively affecting the natural ecosystem. This issue is addressed through delivering the calcium chloride waste into a 'settling pond' where it does not affect local water systems. The water used during the formation of NaHCO3 in the Solvay process is heated to high temperatures, and can cause thermal pollution if dumped in rivers and waterways, resulting in decreased oxygen solubility and threatening aquatic life. Hence, the water used in the process must be sufficiently cooled before being discharged into the environment. The Solvay process is efficient in the sense that the majority of the raw materials (such as ammonia) are recycled and thus resource depletion is kept to a minimum (?)
Guys I feel like I know most of the Chem concepts but my articulation is terrible. I really don't want to lose marks cos of how I phrase things I need your help, plz gib more practice questions
OH SHIT i actually would've got that wrong lol wtf.Unbalanced equation so no band 6
Weird marking criterias for simple questionYeah that's why I told you not to write things that aren't relevant to the question
Explains why its hard to get high raw marks in science.Weird marking criterias for simple question
Simplest questions is usually where most marks are lost. Be on point.Weird marking criterias for simple question
only when you do exams
y the h8 square < /3only when you do exams
y the h8 square < /3
.NaCl + CaCO3 --> Na2CO3 + CaCl2
y the h8 square < /3
you started itthat's so rood. i wouldn't refuse advice cos you didn't get a B6.
I would refuse advice cos you're square.
not my fault your banter is lacking...you started it
I had no problem
check your fbyou started it
I had no problem
Very true! Chem has been 72-76 generally.Explains why its hard to get high raw marks in science.
Yeah true!Simplest questions is usually where most marks are lost. Be on point.
If you are talking about band 6, should aim for 80s (last year says it all to all science)Very true! Chem has been 72-76 generally.
Last year was remarkably easier than other years though. B6 Cutoff is usually 72If you are talking about band 6, should aim for 80s (last year says it all to all science)
Is there a way to determine the difficulty of exams???Last year was remarkably easier than other years though. B6 Cutoff is usually 72