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A body of volume 100 cc immersed completely in water contained in a jar. The weight of water and jar before immersion of the body was 700 gm. After immersion, the weight of water and jar will be?
What mass of Copper (II) Hydroxide precipiate is produced by the double displacement reaction in a solution of 2.67g of potassium hydroxide
Consider a system with four energy levels: 0E, 1E, 2E, 3E, where E is kT (E can be represented by epsilon and T is 100K). Assume that there are 10 particles. Provide an expression for energy, heat capacity and entropy. Plot all as a function of T
2.51 moles of a gas occupies 50.88 liters, and its density is 1.43 g/L at a particular temperature and pressure. Calculate the molar mass of the gas.
You run a metathetical reaction and produce NaCl as one of the products. Since NaCl is soluble in water, how can you ever recover solid NaCl to prove that you made it
Problem- How many half-lives. Are required for the concentration of a reactant to decrease to 25 % of its original value
the element lithium consists of two naturally occurring isotopes with relative abundances of 7.42 and 92.58. the atomic
What is the volume of a 2.3M NaOH solution required to titrate 23.5 mL of a 1.00 M H2SO4 solution? First write a balanced chemical equation
When a solution of barium nitrate and a solution of sodium carbonate were mixed, 10.00 g of barium carbonate was isolated.
A solution of iodine in carbon tetrachloride is 0.10M. How much solvent (carbon tetrachloride) must be added to 50 mL of this solution
If 1L of .15M NaOH is unprotected from mmol of CO2, what will be its new molarity when it is standardized agains a standard solution of HCl using
If you are buying fertilizer for your lawn should it be high or low in N, P, and/or K? (Do not give specific numbers, give a general proportion for the three elements)
calculate the stoichiometric air-fuel ratio of a fuel blend containing 80 vol.% ethanol and 20 vol.% gasoline
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