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Using the trend in the periodic table, rank the following atoms in order of increasing electronegativity:
1]. Li, Na, H
2]. O, C, Be
3]. Cl , I, F
4]. B, O, N
Solution A has a hydronium ion concentration of 3.8 X 10-8 M. Solution B has a hydronium ion concentration of 2.5 X 10-4 M. which solution has the larger hydronium ion concentration. and which solution has the larger pH.
the molecular orbital theory provide an explanation for the existence of the covalent molecule Na2 in the gaseous state. How would you predict Na2 by the Lewis theory?
Calculate w for each step and for the total process. What values for w would you calculate if the cycle were traversed on the opposite direction?
The iron content of hemoglobin can be determined by converting the iron to Fe2+ and titrating using MnO4 -. A 5.0 g sample of hemoglobin requires 21.6 mL of 0.00310 M potassium permanganate. What is the percent of iron in the hemoglobin sample?
What is the new boiling point point of water if you add 188 grams of magnesium chloride to 1250 g of water.
Silver has two isotopes and an average atomic mass of 107.87 amu. If 48.18% of Ag exists as Ag-109 (108.9047 amu), what is the identity of the other isotope?
To reduce pollution when coal is burned, it is important to remove mercury and sulfur compounds from the effluent. Identify which, ifany, ofthe following redox reactions are spontaneous under standard conditions and therefore might be used for thi..
A sample of oxide of antimony (Sb) contains 30.5g of antimony combined w/10g O2. What's the simplest formula for the oxide
What is the formal charge on the indicated atom in each of the following species? sulfur in SO2 nitrogen in N2H4 each oxygen atom in ozone, O3
What is the total mass of each of these elements in the Earth's crust (1 t = 1000kg)?
How many moles of Fe would be formed from 50 grams of Fe3O4 in the following equation
a tank of helium gas with a pressure of 280 at 10 is heated to give a pressure of 1500. what is the new temperature in
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