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What mass in grams of carbon dioxide is produced if 85.0 mol of magnesium carbonate, MgCO3, are heated and allowed to decompose according to this equation? MgCO3(s)--> MgO(s) + CO2(g)
A sample of gas with a volume of 750 mL exerts a pressure of 98 kPa at 30 c. what pressure will the sample exert when it is compressed to 250 mL and cooled to -25 degree celsius.
when .65 moles of iron metal react with 40.0 mL of a 2.5 M copper (II)chloride solution to produce copper metal and iron (III) chloride. How many moles of copper will be produced?
Explain why a 1m solution of the compound FeCl2 in water has a lower freezing temperature than a 1m solution of KCl in water and what is the empirical formula
Assume the eccentric professor has a daily special request for her coffee. She likes to have the 250.0 mL of coffee frozen at -15.0°C overnight and then want it heated to 95°C when she gets there in the morning.
Ethanol and gasoline are both automobile fuels. If gasoline is selling for $4.50, what would the price of ethanol have to be in order to provide the same amount of heat per dollar.
What ions have a larger radius than their parent atom. What is the effect on atomic properties of increasing nuclear charge
The element gallium has two naturally occurring isotopes with masses of 68.9300 amu and 70.9200 amu. What would be the fractional abundance of the first isotope, if the atomic weight was 69.6518 amu
A 0.1000 m aqueous solution of a weak acid, HA, is 1.5% ionized. At what temperature does it freeze? Kf for water = 1.86°C/m.
What is the molecular, complete ionic equation, and net ionic reaction for the following. I get stuck trying to figure out the solubility. NaOH + HC2H3O2 -> BaCO3 + HNO3 -> K2S + HCl ->
A chemist wants to make 6.5L of a 0.310M CaCl2 solution.What mass of CaCl2 (in g) should the chemist use?
Calculate the pH at the equivalence point in the titration of 56 mL of 0.10 M methylamine (see Table 15.4) with a 0.20 M HCl solution.
The concentration of Mg2+ in seawater is 0.052 M. What hydroxide concentration is needed to remove 90% of the Mg2+ by precipitation
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