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Barium reacts with a polyatomic ion to form a compound with the general formula Ba3(X)2. What would be the most likely formula for the compound formed between sodium and the polyatomic ion X?
use the concept of electron configurations to explain why the number of alence electrons in metals tends to be less then the number in most nonmetals.
a sample of propanec3h8 contains 11.7 moles of carbon atoms. how many total moles of atoms does the sample
A 0.0560 g quantity of acetic acid is dissolved in enough water to make 50.0 mL of solution. Calculate the concentration of H+, CH3COO-, and CH3COOH at equilibrium. Ka for acetic acid= 1.8x10^-5.
A piece of iron weighing 85.690 g was burned in air. the mass of the iron oxide produced was 118.350 g. What are the moles of iron in the original sample
What is the gauge pressure of the gas in this mercury manometer
If several large air bubbles entered the graduated cylinder filled with water when it was inverted into the water trough, what would the effect be on a plot of volume H2(g) vs. mass Mg?
A 100.0ml of sample of drinking water was buffered at PH 10.0 and after the addition of Calmagite indicator, required 35.41ml of 4.652X10^-3 m EDTA to reach the end point for the titration. Calculate the total hardness of the water in ppm of CaCO3
The surface area of the nail is 8.59 cm. The density of the zinc is 7.13 g/cm3 how many zinc atoms are used in the coating?
Equilibrium constant for the cell reaction is (A)100 .32/0.0591 (B)100.32/0.0295 (C) 100.26/0.0295 (D) e0.32/0.295
the amino acids his 31 and asp 70 are separated by 0.35 nm in t4lysozyme. calculate the coloumbic potential between the
Calculate the average absorbance and use this value for an absorbance point on your graph. Use the printed graph from above, find the average Absorbance of the unknown on the y-axis
A lungful of air (500 mL) contains 4.1% CO2 by volume. How many grams of KO2(s) is needed to remove the CO2 from a lungful of air at STP according to the following reaction?
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