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The addition of 21.60 g of an unknown metal at 80.0degrees C to 20.00g of water at 21.0degrees C resulted in a final maximum temperature of the system of 23.0degrees C. Calculate the specific heat of the metal and its approximate atomic mass. Suggest a name for the unknown metal. Specific Heat: atomic mass: element:
Half-life equation for first-order reactions: where is the half-life in seconds , and is the rate constant in inverse seconds . Part A What is the half-life of a first-order reaction with a rate constant
Determine How many mg of a 298 mg sample remains unreacted after twenty three days if 32P decompose by a first-order mechanism, half-life = 14.3 days.
If 5.0 g of Al reacts with 4.45 g of O2, what is the empirical formula of aluminum oxide? (Type your answer using the format CO2 for CO2.)
A Breathalyzer instrument contains two ampules, each of which contains 0.75 mg K2Cr2O7 dissolved in 3 mL of 9 mol L^-1 H2SO4(aq). One of the ampules is used as reference. When a person exhales into the tube of the Breathalyzer, the breath is direc..
The reaction between nitric oxide (NO) and hydrogen is thought to proceed via the following mechanism. Do not make any assumptions about which step is rate determining
The base peak in the mass spec of phenylacetic acid indicated that the compound lost a fragemnt that has an m/z= 17. This fragmentation corresponds to the loss of a(n)
consider the following reaction. Mg+H3PO4 magnesium phosphate and hydrogen. what is the molecular formula for magnesium phosphate.
An 8 g of SO3 was placed in an evacuated container where it decomposed at 600 degrees Celsius. At equilibrium, the total pressure and density were 1.8 ATM and 1.6 g/L. Calculate constant pressure.
what mass ratio of sugar to water is required to raise the boiling point of a sugar solution 145 degrees celcius?
Compute pH of a solution containing .030 moles of TRIS and .020 moles of the salt TRISHCl in a total volume of 1.50L
A hypothetical reaction X + 2Y ® Products is found to be first order in X and second order in Y. What are the units of k, the specific rate constant, if reaction rate is expressed in units of moles per liter per second? A) M•s-1 B) M-2•s-1 C) M-3•..
Calculate the Ka for this weak acid. If 10.00mL of this mixture was then diluted with distilled water to a total volume of 100.00mL, what would be the new solution pH?
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