A graduated cylinder initially contains 25.6 ml of water. Then a piece of metal is dropped and the water level rises to 39.5 ml. What is the volume of the metal?

Hello, I was hoping for some help with the prelaboratory questions for Analytical Chemistry. I am pretty sure I got number one, but I was very confused about the "second endpoint" calculations and I am pretty sure I have calculated the percentage wrong. These are the equations we are given to work with and the questions are below. Thanks in advance! Eq. 2  CO32-  +  H+  Û  HCO3- (bicarbonate ion) Eq. 3  HCO3-  +  H+   Û  H2CO3 (carbonic acid) Eq. 4  However: H2CO3 (aq)  Û  CO2 (g)  +  H2O   How much concentrated HCl acid is required to make 0.500 L of a 0.100 M HCl solution? One can calculate the Molarity (M) of the HCl from the weight percentage on the reagent bottle (which is usually 37.0% (w/w) with a density of 1.19 g/mL). A weight of 1.300 g of sodium carbonate (MW = 105.989 g/mol) is dissolved in 250.0 mL water. If a 25.00 mL aliquot of the sodium carbonate solution is placed into an E-flask and titrated with 0.1034 M HCl, what should be the volume of HCl to reach the second…

A current of 21.0 mA is maintained in a single circular loop of 1.40 m circumference. A magnetic field of 0.520 T is directed parallel to the plane of the loop. (a) Calculate the magnetic moment of the loop. mA. m² (b) What is the magnitude of the torque exerted by the magnetic field on the loop? Submit Answer mN m .

Táke off any gridlines and add a title and axes labels. Add the trendline and the relevant equation. b) If a sample was analyzed and the current was measured to be 5.18 mA, what is the concentration of analyte in the sample? 5.18= 3.403x + 1.9232 3.2368=3.4403 x 0.947: x Pentane (C5H12) is a liquid with density of 0.929 g/mL at 25 °C. Find the true mass of pentane when the mass in air is 14.82 g. Assume air density is 0.0012 g/mL.