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    Calculating Spring Force Constant from a Dropped Ball

    i have a similar question, except with different values. 135 g for mass of ball 62 cm above spring 9.8 is same for gravity
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    Speed of Rocket at 60 Degrees Elevation

    do u get 4800 m/sec?
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    Rate of Change in Water Depth of Cone-Shaped Tank

    The base of a cone-shaped tank is a circle of radius 5 feet, and the vertex of the cone is 12 below the base. The tank is filled to a depth of 7 feet, and water is flowing out of the tank at a rate of 3 cubic feet per minute. Find the rate of change of the depth of the water in the tank.
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    Speed of Rocket at 60 Degrees Elevation

    A rocket is rising vertically from a point on the ground 100 meters from an observer at ground level. The observer notes that the angle of elevation is increasing at a rate of 12 degrees per second when the angle of elevation is 60 degrees. Find the speed of the rocket at that instant.
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    Limiting and Excess Reagents: Fact or Fiction?

    Which of the following is NOT true about limiting and excess reagents? a.)The amount of product obtained is determined by the limiting reagent. b.)Some of the excess reagent is left over after the reaction is complete. c.)A balanced equation is necessary to determine which reactant is the...
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    Balanced Equation: 2S(s)+3O2(g) ----> 2SO3(g): Correct Interpretation

    coefficients symbolize the number of moles so A would be correct. Then I am not 100% sure about B cause the molecules seem to be right but I am not sure about the atoms of S and if that is a correct interpretation. And for C, I don't think that the coefficients can stand for grams cause...
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    Balanced Equation: 2S(s)+3O2(g) ----> 2SO3(g): Correct Interpretation

    Which of the following is an INCORRECT interpretation of the balanced equation shown below? 2S(s) + 3O[SIZE="1"]2(g) ----> 2SO[SIZE="1"]3(g) a.) 2 mol S + 3 mol O[SIZE="1"]2 ----> 2 mol SO[SIZE="1"]3 b.) 2 atoms S + 3 molecules O[SIZE="1"]2 ----> 2 molecules SO[SIZE="1"]3...
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    Find Missing Coefficients: Al2SO4 + KOH --> AlOH3 + K2SO4

    What are the missing coefficients for the equation below? Al2(SO4)3 + KOH ---> Al(OH)3 + K2SO4 a.) 1,6,2,3 b.) 2,12,4,6 c.) 1,3,2,3 d.) 4,6,2,3 I think my problem is whether or not to keep the SO4 together, or break it apart to sulfur and oxygen?
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    Calculating Barium Phosphate Formation: 10th Grade Chemistry Example

    How many grams of barium phosphate will form when 127.2 grams of potassium phosphate reacts with 75.6 grams of barium chloride? I get 72.82 grams of Ba3(PO4)2? Is this correct?
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    How Much Cadmium(II) Chloride Forms in a High School Chemistry Reaction?

    How many grams of cadium(II)chloride will form when 24.6 grams of ammonium chloride reacts with cadium(II)nitrate? I get 42.2 grams of CdCl2. Is this correct?
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    Bond where electrons are being transferred?

    anion i believe is negative charged atom correct, so then i am correct by saying that it is atom 4 in question #4
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