Can someone me write a lab report if yes i will give u the information i need for tommorow

Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon

How many moles of kci are produced from 2.50 moles k

Dumbledore decides to gives a surprise demonstration. he starts with a hydrate of na2co3 which has a mass of 4.31 g before heating. after he heats it he finds the mass of the anhydrous compound is found to be 3.22 g. he asks everyone in class to determine the integer x in the hydrate: na2co3·xh2o; you should do this also. round your answer to the nearest integ