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Question- Titration of an unknown diprotic acid weighing 0.1206 g requires 12.67 mL of 0.1268 M NaOH. What is the molar mass of the acid?
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If 0.750 L of argon at 1.50 atm and177°C and 0.235 L of sulfur dioxide at 95.0 kPa and 63.0°Care added to a 1.00-L flask and the flask's temperature is adjustedto 25.0°C, what is the resulting pressure in the flask?
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At rest, a person inhales 9.72*10^21 nitrogen molecules in an average breath of air. How many mole of nitrogen atoms are inhaled? (Hint: in air, nitrogen occurs as a diatomic molecule)
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Aqueous potassium phosphate was mixed with aqueous magnesium chloride, and a crystallized magnesium phosphate product was formed. Consider the other product and its phase, and then write the balanced molecular equation f ...
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How much will the temperature change when 3.0 g of tooth enamel (specific heat = 0.18 cal/g C) absorbs 0.80 cal of heat energy?
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