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Questions in chemistry

[Sagot para sa’yo] cesium-131 Express your answer as an isotope.

[Sagot para sa’yo] make a schematic diagram for the thin layer chromatography experiment​

[Sagot para sa’yo] Antoine Lavoisier, the French scientist credited with first stating the law of conservation of matter, heated a mixture of tin and air in a sealed flask to produce tin oxide. Did the mass of the sealed flask and contents decrease, increase, or remain the same after the heating?

[Sagot para sa’yo] the of an element is the total number of protons and neutrons in the of an atom

[Sagot para sa’yo] A 75.0kg child climbs a 6.00cm long slide. What is the potential energy of the child with respect to the ground?​

[Sagot para sa’yo] Activity 81. 0.0123456986322. 1 230 9453. 87 576 788 432 234 5434. 0.06007896535. 11 987​

[Sagot para sa’yo] The end of the semester is near, and most teachers require you to submit all the outputs in their subjects. But you are still working on them and you find it difficult to handle the situation. They particularly remind you to comply because you failed in the previous grading period. You must pass time because this is your last chance what feeling emotion action results of action​

[Sagot para sa’yo] A 1000 ml of solution contains 25% acetic acid by volume after some evaporation 200 ml of the solution has evaporate assuming only the water evaporates what is the new percent by volume concentration of acetic acid in the remaining solution?​

[Sagot para sa’yo] If your mother plant pechay. Some of the seeds are planted in small pots and some in the garden soil. She observed that her plant growth and its fruit differ, although she planted them simultaneously. The pechay in the garden receives enough sunlight while the pechay planted on the pot are placed shady area. She waters and gives them the same amount of fertilizer. What is the hypothesis? Controlled variables? Independent variables? Dependent variables?

[Sagot para sa’yo] 4. Complete the table with the correct information.Compound1. GlucoseChemicalFormulaMolar MassPercentagecompositionCHO.2. PropaneCaHa3. Hydrogen peroxideH2O24. Copper sulfateCuSOshow your solution ​