Here are the answers to the experiment. Report Day : Date : Topic : Volumetric Analysis - Stoichiometry Purpose : To determine the exact concentration of a monobasic acid, HX Apparatus : 250 cm3 volumetric analysis with stopper, 25.0 cm3 pipette, 50.00 cm3 burette, retort stand with clamp, filter funnel, glass rod, pipette pump, electronic balance, conical flask, 50 cm3 beaker, dropper, spatula, 250 cm3 beaker Materials : Phenolphthalein as indicator, distilled water, solid sodium hydroxide, NaOH, monobasic acid, HX Theory introduction : Neutralisation occur when an acid react with base. In laboratory, the concentration of an unknown acid can be determined using titration technique. Therefore, this experiment is conducted to determine the unknown acid concentration. Procedure : Part A A spatula was used to transfer solid sodium hydroxide, NaOH, into a 50cm3 beaker placed on a electronic balance. 5.02 g* of solid sodium hydroxide, Na
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ReplyDeleteMy teacher said answer in part B 1st questions is protoxylem, epidermis and parenchyma.
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ReplyDeleteAnimal and plant cells are fundamental units of life with key differences. Animal cells lack a cell wall and chloroplasts, but possess centrioles. Plant cells have cell walls, chloroplasts for photosynthesis, and large central vacuoles. Both contain organelles like the nucleus, mitochondria, endoplasmic reticulum, Golgi apparatus, and lysosomes. These organelles perform specific functions vital for cell survival. Animal cells are typically round and irregularly shaped, while plant cells have a more defined rectangular shape due to the cell wall. Both types of cells are essential building blocks for complex organisms.
ReplyDeletewhy they are all divided by 0.01？
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