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Suppose that you wanted to be sure that a metal ion, any metal ion, would dissolve in water. What salt of the metal ion compound would you choose?
1. the chloride (Cl?) salt of the metal ion
2. the nitrate (NO?3 ) salt of the metal ion
3. the carbonate (CO2?3 ) salt of the metal ion
4. the hydroxide (OH?) salt of the metal ion
Describe the biogeochemical cycles for H2O, C and N and describe how human activities have thrown them out of their natural balance.
write a symbol for each of the following: a)proton b)gamma ray c)positron d)barium-131 e)palladium-103
Gold sells for $1120/oz. One ounce is equal to 28.35g. The molar mass of gold is 196.97g/mol. 1 moldovian franc contains 0.567g of gold. If 1 franc = $1.42, how many atoms of gold are presents in 0.010 moldovian francs?
A stream of humid air containing 1.00 mole % H2O(v) and the balance dry air is to be humidified to a water content of 10.0 mole % H2O. For this purpose
Calculate the molar concentration of OH - ions in an 01.33 M solution of hypobromite ion, BrO- (Kb = 4.0 10-6).
Formic acid, CH2O2, can be decomposed to produce hydrogen. The Lewis structure for formic acid, CH2O2, is show below. The atoms are labeled A, B, C, D, E.
The boiling point of another member of this homologous series was found to be 309 . What is the likely molecular formula for this compound
How many phases and components are present. (b) What is the variance (the number of degrees of freedom) of the system? Identify the independent variables.
calculate how many mgs of Ca2+ are present in 12.0mL of blood and Determine the percent yield 5.04 grams of H2
Briefly explain why you can make the assumption that all of the SCN- ion in solutions S2-S6 has been converted to FeNCS^2+ ion.
the freezing point of the solution is lowered by 4.10 °C. The freezing point and Kf constant for cyclohexane can be found here. Calculate the molar mass of quinine
Magnesium metal is used as a sacrificial anode to reduce the corrosion of underground storage tanks (made of iron, or more accurately, steel which is an iron/carbon alloy). As a result the sacrificial metal corrodes instead of the iron. Explain th..
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