CHEMISTRY 9: NBF, 2024, UNIT 06 : STOICHIOMETERY ; Concept Assessment Exercises:6.1,6.2,6.3 скачать в хорошем качестве

CHEMISTRY 9: NBF, 2024, UNIT 06 : STOICHIOMETERY ; Concept Assessment Exercises:6.1,6.2,6.3

This video is about: CHEMISTRY 9: National Book Foundation UNIT 06 : STOICHIOMETERY Concept Assessment Exercises: 6.1,6.2,6.3 Write the empirical formulas for the compound containing carbon to hydrogen in the following ratios: a. 1:4 b. 2:6 c. 2:2 d. 6:6 1. Aspirin is used as a mild pain killer. There are nine carbon atoms, eight hydrogen atoms and four oxygen atoms, in this compound. Write its empirical and molecular formulas. 2. Vinegar is 5% acetic acid. It contains 2 carbon atoms, four hydrogen atoms and 2 oxygen atoms. Write its empirical and molecular formulas. 3. Caffeine (C8H10N4O2) is found in tea and coffee. Write the empirical formula for caffeine 1. Potassium Chlorate (KCIO3) is used commonly for the laboratory preparation of oxygen gas. Calculate its formula mass. 2. When baking soda, NaHCO3 is heated carbon dioxide is released, which is responsible for the rising of cookies and bread. Determine the formula masses of baking soda and carbon dioxide. 3. Following compounds are use as fertilizers. Determine their formula masses. i. Urea, (NH2)2 CO ii. Ammonium nitrate, NH4NO3 You can watch more educational videos on my channel ‪@mehnazkhan571‬