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(Subject: Chemistry & Physics) Please answer all questions. Please be clear. Short answers are fine. 3-4 sentences.
1 )If a feather and a lead ball are dropped from 1000m in AIR (vacuum) , will they hit the ground at the same time? Why or Why not? Recall that in a vacuum, the acceleration due to gravity is the same for all objects. (i.e. acceleration due to gravity on earth is g = 9.8 m/s^2
2) List the three principal types of chemical bonds in order of strength with the strongest first. Please include a short description of each and an example of each.
3) If you have a cup of oil (non polar) and a cup of water (polar), and a cup of an unknown substance, how can you tell if the unknown substance is polar or non polar?
How would you calculate the quantitative solubility of calcium nitrate (Ca(NO3)2 after saturating the solution, heating, and drying and the precipitate formed weighs 1.3 g
In a thermite reaction, powdered aluminum reacts with iron (III) oxide to make aluminum oxide and molten iron What mass of aluminum oxide is produced when 2.3 grams of aluminum reacts with iron (III) oxide
Calculate Keq for 3 moles of electron(s) in each half-reaction and a standard potential of 0.47 V.
0.0200 mole of HCl and 0/0200 mole of NaOH react in an open calorimeter and produce 100 J of heat what is the enthalpy of the reaction per mole of HCl
Use the atomic radius (70 pm) and density of neon at 25 °C and 1 atm (0.90 g/mL) to calculate the average density of a neon atom.
A 335 mL can of soda pop is found to contain 41 g of sucrose. What is the molarity of the solution with respect to sucrose?
A helium-filled weather balloon has a volume of 714 L at 23 oC and 750 mmHg. It is released and rises to an altitude of 3.78 km, where the pressure is 546 mm Hg and the temperature is -2oC. The volume of the balloon at this altitude is
A solution is prepared by dissolving 0.400 g of solute in 1000.g of water how many parts per million of solute are in this solution
How much water must be added to 562 mL of 0.200 M HCl to produce a 0.148 M solution? (Assume that the volumes are additive.)
Determine the molarity of a solution that contains 15.50mL of glycerol (C3H8O3, d= 1.265g/mL) in 225.0mL
Write the condensed structural formula of the ester formed when each of the following reacts with methanol. For example, the ester formed when propanoic acid reacts with methanol is CH3CH2COOCH3.
Which value is closest to the pOH of a 0.30M solution of the weak base methylamine (CH_3_NH_2_). The Ka for the acid form of methylamine (CH_3_NH_3_+) is 2.27E-11.
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