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    Pre-calculus or trigonometry?

    I am a freshmen in college and I am trying to decide what classes to take. According to the college before taking pre-calculus I must take trigonometry, but I'd rather skip trig in order to save money seeing how for my degree I will need to make it to calculus 2 and higher. My question is...
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    chemistry problem involving gases?

    Which of the following compounds is likely to occur as a gas at room temperature? CaF2 MgS NO2 NaF CoCl2
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    chemistry solubility?

    Which of the following ionic compounds would be expected to be insoluble in water? CaS Ca(NO3)2 Na2SO4 KI NaOH
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    chemistry specific heat capacity?

    A 275-g sample of nickel at 100.0°C is placed in 100.0 mL of water at 22.0°C. What is the final temperature of the water? Assume that no heat is lost to or gained from the surroundings. Specific heat capacity of nickel = 0.444 J/(g·K). 39.6°C 40.8°C 61.0°C 79.2°C 82.4°C
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