1. Explain how would the following errors affect the calculated acid concentration? a. In the titration of an unknown acid with NaOH, assume a chemist overshoots the end point and adds too much NaOH. How would this error affect the final calculation for the concentration of the unknown acid? Would it be overestimated, underestimated or remain unaffected?
b. In the titration of an unknown acid, assume a chemist uses a solution of NaOH that has been sitting on the shelf for a long time and partially neutralized by the dissolved CO2 in the air. The concentration label on the bottle overestimates the NaOH concentration. How would this error affect the calculated concentration of the unknown acid?
2. The molarity of a NaOH solution is standardized to be 5.14 M. Determine (H2SO4) and %for the unknown acid solution if 41.27 mL of this NaOH solution is needed to fully react with 20.00-ml sample of sulfuric acid (H2SO4).
2.1 What is the %(m/m) of the sulfuric acid solution? Assume its density is 1.30 g/mL at room temperature.

answer

fusion: the energy source of stars. the energy released from the collapse of the gas into a protostar causes the center of the protostar to become extremely hot. when the core is hot enough, nuclear fusion commences. fusion is the process where two hydrogen atoms combine to form a helium atom, releasing energy.

hope it

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.

the answer is 1 i believe

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.