Measurement, Mass & Equations
1. This question has 4 part(s).
1.1. This question is about titanium.
Titanium is a transition metal that is extracted from titanium dioxide in a two-stage industrial process.
In the first stage, titanium dioxide reacts with carbon and chlorine to form titanium tetrachloride and carbon monoxide.
Write the balanced symbol equation for this reaction.
1.2. Explain how your chemical symbol equation in part (a) demonstrates the law of conservation of mass.
1.3. Identify two hazards associated with Stage 1.
1.4. Calculate, to three significant figures, the percentage by mass of chlorine in titanium tetrachloride.
Ai এর মাধ্যমে
১০ লক্ষ+ প্রশ্ন ডাটাবেজ
প্র্যাকটিস এর মাধ্যমে নিজেকে তৈরি করে ফেলো
উত্তর দিবে তোমার বই থেকে ও তোমার মত করে।
সারা দেশের শিক্ষার্থীদের মধ্যে নিজের অবস্থান যাচাই
A student completes two experiments in the school laboratory.
In the first experiment, the student measures a known mass of green copper carbonate powder, CuCO3, into a crucible and heats it strongly for around 5 minutes.
After the crucible has cooled, the student measures the mass of the powder that remains.
The student incorrectly concludes that there must be an error in the experiment because the mass of powder has decreased.
Explain why the mass of powder should decrease. Your answer should include a balanced chemical equation with state symbols.
This question has 3 part(s).
In terms of electrons, explain why the thermal decomposition of copper carbonate is not a reduction or oxidation reaction.
This question has 4 part(s).
