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1. Mg occurs in water of sea to the extent of 1.4 g magnesium/kg of seawater. Calculate volume of seawater (in cubic metres (M3)) would have to be processed to form 1.00 x 105 tons of mg? . Given that the density =1.025 g/mL for seawater.
2. A scientists places 4.00 moles of Argon, Ar (g) and 2.00 moles of Helium, He (g) into a flask at the temperature of 298 Kelvin and measures the pressure to be 3.00 atm. calculate the pressure due to Helium gas?
we were given mass and volume and we were asked to find limiting reactant in second question we were asked to find
A 100.0 g sample of water at 90.°C is added to a 500.0 g sample of water at 10.°C. Calculate the final temperature of the water.
Calculate the amount of energy in kilojoules needed to change 117g of water ice at -10degrees Celcius to steam at 125 degrees Celcius
How many grams of calcium nitrate need to be dissolved in 250 mL of water to form a solution that has a freezing temperature of -3.2 C?
An unknown acid has a molar mass of 90. g/mol and a mass composition of, 40%-C, 6.7%-H, and 53.3% -O. What is the molecular formula of the acid
determine the specific heat capacity of a metal that has a mas of 14 grams. As the metal cools from 400 degrees celcius to 200 degrees celcius, 364 joules of heat is released
Titration of the newly freed EDTA required 18.0 mL of 0.0210 M Ca2 . What were the molarities of Cd2 and Mn2 in the original solution?
All numerical answers must be reported to the correct number of significant figures. What volume of 1.000 M LiCl must be diluted with water to prepare 250.0 mL of 0.100 M LiCl
Give the order of colors in a rainbow from shortest wavelength to longest wavelength and provide approximate numeric values for the highest
sodium hydroxide solution for neurtalization to a phenolphthalein end point, calculate the molarity of the phosphoric acid.
If a buffer solution is 0.220 M in a weak acid (Ka = 8.5 × 10-5) and 0.550 M in its conjugate base, what is the pH
Given a column of air with a pressure of 1.57 x 10^5 Pa and an area of 1.12 m^2 and given that the acceleration due to gravity is 9.8 m/s^2, what is the mass of this column
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