A student sttempts to prepare a 1.25 M stock solution of sodium hydroxide (NAOH) for the lab. He miscalculates and measuresd out the wrong mass of sodium hydroxide. He ends up adding 225g NaOh to 5L of water.
a. What is the concentration of the solution he prepared?
b. Does the student need to add solvent or solute to obtain 1.25M? Why?
c. How much solvent would need to be added to dilute this solution to 0.045M?

c)red bank

explanation:

red bank is a borough in monmouth county, new jersey, incorporated in 1908 and located on the navesink river, the area's original transportation route to the ocean and other ports.

1.solid

2.carbon dioxide

3.helium

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3

air

in a tire you fill a tire with air

then a couple days later you check the air pressure in the tire

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