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an object made of aluminum has a mass of 8.37 gram. when it was placed in a graduate cylinder containing 20.0 milliter of water, the water level rose to 23.1 milliter. calculate the density and specific gravity of the object.
If a cell is in a resting state, which of the following is NOT true: a. cell needs little energy b. high ATP, low ADP levels
When chlorine reacts with 2-methylpropane and replaces only one hydrogen with chlorine
Carbon sequestration technologies are being actively explored by researchers as methods to remove CO2 from the atmosphere, thereby diminishing the greenhouse effect.
How many moles of oxygen atoms are combined with 4.20 moles of chlorine atoms in Cl2O7?
What is the average mass of calcium in each sample? (Assume that the relative uncertainties in atomic mass are small compared the uncertainty of the total mass.)
The vapor pressure of benzene (C6H6) is 120 torr at 27.0C, and its normal boiling point is 80.1C. What is the molar heat of vaporization of benzene.
Aluminum hydroxide and sulfuric acid reaction, Which reagent is the limiting reactant when 0.450 mol Al(OH)3 and 0.550 mol H2SO4 are allowed to react? How many moles of the excess reactant remain after the completion of the reaction? Please explain..
how much energy is required to vaporize 48.7 g of CH2Cl2 at its boiling point if its Hvap = 31.6 kg/mol
Using curved arrows to show the flow of electrons and being careful to balance mass and charge for each step, provide a mechanism for the reaction below that show how both products are formed
Find the concentration and pH solution - What is the pH of a solution of 0.65 M acid and 0.51 M of its conjugate base if the pKa = 5.30?
What is a likely mechanism for the reaction below: (2Z)-7-methylocta-2,6-dienal using heat and a hydroxyl to form 6-methylhept
Assuming no energy is transferred to or from the surroundings, calculate the final temperature of the water after all the ice melts. Heat capacity of H2O(s) 37.7 J/(mol X K) Heat capacity of H2O(l) 75.3 J/(mol X K) Enthalpy of fusion H2O 6.01 KJ/m..
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