How many moles of titanium are contained in 71.4g

The molar mass of the substance represents the mass of the substance in one mole. You can see the molar masses of the substance in interest in the periodic table of elements. It is mostly seen at the right bottom side of the element name. In here, you have 71.4 g of titanium. You should know by now that titanium has a molar mass of 47.9 grams per mole. To get the number of moles of titanium, divide 71.4 grams by 47.9 grams per mole. The answer is 1.49 moles of titanium. 

Iwould you figure it out but you don't have a picture or in your question as to what the physical property you're looking for is

Answer : option c) heat is released during the process.explanation :

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.