Question 8 How many grams of magnesium oxide, Mgo, are produced if 29.8 grams
of magnesium metal are reacted with excess oxygen in the air?
Reaction
2Mg + 1 02+2 Mgo
Round your answer to 3 significant figures!

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '

Compare and contrast physical changes with chemical changes.

Achemistry student weighs out 0.306 g of citric acid (h3c6h5o7), a triprotic acid, into a 250 ml volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with 0.1000 m naoh solution. calculate the volume of naoh solution the student will need to add to reach the final equivalence point. be sure your answer has the correct number of significant digits.