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Spinel is a mineral that contains 37.9% Al, 17.1% Mg, and 45.0% O, by mass, and has a density of 3.57 g/cm3. The unit cell is cubic with an edge length of 8.09 Å. How many atoms of each type are in the unit cell?
Determine the number of electron pairs (both bonding pairs and lone pairs) on the iodine atom in the following.
the enthalpy change for melting ice at 0degc and constant atmospheric pressure is 6.01 kjmol. calculate the quantity of
Under standard-state conditions, what spontaneous reaction will occur in aqeuous solution among the ions
The yield of 2-bromohexane is much higher when the reaction mixture is stirred than when it is not. Why is this
Question- What are the physical properties (particularly, the color in solution or as a solid) of the following species- Mn2+, KMnO2, MnO4-, MnO42-
Why do none of the substrates given (toulene, o-xylene, m-xylene, p-xylene, p-cymene, ethlybenzene, anisole) as choices for this experiment include any with meta-directing effects
calculate the E cell when [Zn^+2] = 0.10M and [Cu^+2] = 2.0 x10^-4M. Is the reaction Spontaneous or Non- spontaneous?
When compound Y is heated, it decomposes to the element X and hydrogen gas. Decomposition of 1g of Y yields 0.0250 mol of gas. Calculate the possible molar mass values for X.
Calculate the pressure in the mindanao trench. depth = 11.5 km and the average mass density of sea water
1) The concentration of HC2H3O2 is 1.0x10^-1. The ka value is 1.8x10^-5. Calculate pH.
to obtain the same antifreeze protection requires 76g of propylene glycol to replace each 62g of ethylene glycol.
A syringe contains 589mL of CO at 325 K and 1.2atm pressure. A second syringe contains 473mL of N2 at 298K and 2.6 atm. Explain what is the final pressure if the contents of these two syringes are injected into a 1.00L container at STP
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