7. How much 0.5 M KCl solution is required to react completely with 100 mL of 2M AgNO3 solution? KCl + AgNO3 → AgCl + KNO3

8. In the previous question, the AgCl produced is nonsoluble and forms a precipitate. If this precipitate is weighed and dried, what mass of AgCl would you expect to find?

9. A fixed volume of 15 cm3 of N2 at STP is reacted with excess H2. What volume of NH3 is produced at STP?

N2 + 3H2 → 2NH3

10. 50 mL of 2.0M NaBr is reacted with excess Cl2. The Br2 gas produced is collected. What volume would the gas occupy at 298 K and 1 atm?

mechanics (greek   is that area of science concerned with the behaviour of physical bodies when subjected to forces or displacements, and the subsequent effects of the bodies on their environment. the scientific discipline has its origins in ancient greece with the writings of aristotle and archimedes[1][2][3] (see history of classical mechanics and timeline of classical mechanics). during the early modern period, scientists such as galileo, kepler, and newton laid the foundation for what is now known as classical mechanics. it is a branch of classical physics that deals with particles that are either at rest or are moving with velocities significantly less than the speed of light. it can also be defined as a branch of science which deals with the motion of and forces on objects. the field is yet less widely understood in terms of quantum theory.

explanation:

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

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.