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Let's explore the scientific method. Here is the situation: We are planting a garden. We have a variety of bulbs and potted plants. We do not have any directions on how or when to plant each of these items. We do not have any gardening books, magazines, or access to the Internet (Oh, the horror!). We need to observe a number of characteristics for these plants. What are some of the characteristics that we want to observe? What might be your initial hypothesis? How would you set up an experiment to test your hypothesis?
The combustion of ethanol, C2H6O (MW = 46.0 g/mol), produces CO2 (MW = 44.0 g/mol) and water (18.0 g/mol). In a lab experiment, the reaction occurs using 4.60 g of ethanol in a 1.00 L container at body temperature (310 K) and 0.970 atm according t..
Determine the percent yield if a student decomposes H 2 O to Form hydrogen (H) and oxygen(O). If the student starts with 34.7 grams of H2O and collects 20.0 grams of oxygen,
Which one of the following molecules has a zero dipole moment? A. CO B. CH2Cl2 D. SO2 C. SO3 E. NH3 67. Indicate the type of hybrid orbitals used by the central atom in CCl4. A. sp B. sp2 C. sp3 D. sp3d E. sp3d2 68. What is the hybridization of th..
Predict whether, to any significant extent, MnO-4(aq) will oxidize Cl-(aq) to Cl2(aq) in acidic solution, The reaction is spontaneous under standard conditions
A mixture of cis and trans GKW was analyzed using UV-Vis spectroscopy to make absorption measurements at two different wavelenghts. From the data given below, calculate the molar concentrations of the cis and trans isomers
the freezing point of pure camphor is 178.4 degrees C, and its molal freezing-point constant, Kf, is 40.0 degrees C/m. Find the freezing-point of a solution containing 3.00 g of a compound (molar mass=125 g/mol) dissolved in 45.0 g of camphor
Experimentally observed facts have led to the establishment of rules used to predict the solubility of common compounds in water. The rules can be stated as follows: Compounds that contain , , , and are always soluble with no particular exceptions..
If the ion of element X has a mass number of 230 and has 86 electrons, what is the identity of the element? How many neutrons does it have?
Write a procedure that would follow to demonstrate the effect of increasingly higher concentrations of hydrochloric acid on its rate of reaction with antacid tablets. Can only use materials listed:
which mixture would not be expected to be homogeneous. pentanol and hexane, KBr and water, acetic acid and methanol, ethylene glycol and water, octane and heptane
CsCl crystallizes in a unit cell that contains the Cs+ ion at the center of a cube that has a Cl- at each corner. Each unit cell contains __________ Cs+ ions and __________ Cl-, ions, respectively.
pressure cookers achieve a high cooking temperature to speed the cooking process by heating a small amount of water under constant pressure
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