1. Describe el elemento asignado: a. nombre, b. símbolo c. #atómico, d. masa atómica, e. dónde se encuentra y cuáles son sus usos, f. p+, e-,no, g. grupo y periodo, h. quién lo descubrió, año,
dónde, i. clasificación en la tabla periódica, j. estado en que se encuentra(sólido, líquido, gas),
k. punto de fusión 1.punto de ebullición * [1]

porfavor para hoy

Use the gizmo to find the concentration of the mystery ch3cooh. use the titrant and indicator shown below perform the titration. what is the titrant volume? titrant analyte indicator titrant volume analyte concentration naoh ch3cooh phenophthalein select one: a. 20.0 ml b. 27.0 ml c. 30.0 ml d. 24.0 ml

Astudent is given a sample of a blue copper sulfate hydrate. he weighs the sample in a dry covered porcelain crucible and got a mass of 23.875 g for the crucible, lid, and sample. the mass of the empty crucible and lid was found earlier to be 22.652 g. he then heats the crucible to expel the water of hydration, keeping the crucible at red heat for 10 minutes with the lid slightly ajar. on colling, he finds the mass of crucible, lid, and contents to be 23.403 g. the sample was changed in the process to very light clue anhydrous cuso4. if there are again 100.0 g of hydrate, how many grams of cuso4 are in it? how many moles of cuso4? (hint: molar mass of cuso4 = 159.6 g / mole. what per cent of the hydrate is cuso4? you may convert the mass of cuso4 to moles.)

What reaction is taking place? 02 + c3h8 = h20 + co2