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1-How many moles of phosphine (PH3 ) are produced for every 4.0 moles of hydrogen that react according to the chemical equation below?3H2 + P2 => 2PH3
2 -Combustion analysis of 1.200 g of an unknown compound containing carbon, hydrogen, and oxygen produced 2.086 g of CO2 and 1.134 g of H2O. What is the empirical formula of the compound?
What is the molecular formula?
A 530. g piece of copper tubing is heated to 89.5°C and placed in an insulated vessel containing 159 g of water at 22.8°C. Assuming no loss of water and heat capacity for the vessel of 10.0 J/K
Nitric acid is usually purchased in a concentrated form that is 70.3% HNO3 by mass and has a density of 1.41 g/mL
The molar solubility of a compound AX2 is 2.5 x 10-3 M. Calculate the value of Ksp for AX2. 1.5 x 10-3 6.3 x 10-8 1.4 x 10-8 3.4 x 10-9 none of these
A 2 liter bottle contains a solution of sugar in water. there are 2 moles of sugar in the bottle. what is the morality of the solution. show your calculations.
A molecular orbital in a diatomic molecule that has a nodal plane containing the internuclear axis and no nodal plane perpendicular to the internuclear axis is of
how can their efficiency be less than 100 and the law of conservation of energy still be valid? 9. an incandescent
Complete the following neutralization reaction, and identify the strong acid, strong base, weak acid and/or weak base.
Can someone please show me the product, and the reaction by-product of the following reaction? Please make sure that the reaction is balanced.
In the decomposition of hydrogen peroxide, the percentage yield of oxygen is 93%. What is the actual yield in grams of oxygen if you start with 100 grams of H2O2.
Baking soda, baking powder - what's the difference? Both are white powders, odorless and nearly indistinguishable
The Ksp of AgCl at 25oC is 1.0 x 10^-10. Calculate the concentrations fo Ag+ and Cl- in a saturated solution of AgCl, and the molar solubility of AgCl.
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