Match each vocabulary word with its definition.

1. the nuclide produced from a radioactive decay
daughter
2. the difference between the mass of a nucleus and the sum of masses of its components
parent
3. any isotope of an element
mass defect
4. the beginning nuclide in the radioactive decay chain
nuclide

Can someone me with questions 15 to 17 plz.

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

The solid xy decomposes into gaseous x and y: xy(s) m x(g) + y(g) kp = 4.1 (at 0 °c) if the reaction is carried out in a 22.4 l container, which initial amounts of x and y will result in the formation of solid xy?