Prepararam-se duas soluções aquosas de açúcar: uma (A) a partir de 25 g de soluto em 120 cm3de água, outra (B) a partir de 30 g de açúcar em 180 cm3de água. Qual delas é mais doce? Justifica.

What is the chemical formula of the following compound

In a copper wire, a temperature increase is the result of which of the following

Inside a flashbulb, oxygen surrounds a thin coil of magnesium. when the flashbulb is set off, a chemical reaction takes place in which magnesium combines with oxygen to form magnesium oxide. which of the chemical equations matches the reaction above? a. mg + o2 mgo2 + energy b. 2mg + o mg2o + energy c. 2mg + o2 2mgo + energy d. mg + o mgo + energy