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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?
without doing detailed calculations sketch the curve for thetitration of 30.0 ml of 0.10 m naoh with 0.10 m hcl.
Calculate the pH of a solution prepared by dissolving 0.250 mol of benzoic acid (C7H5O2H) and 0.300 mol of sodium benzoate (NaC7H5O2) in water sufficient to yield 1.00 L of solution. The Kaof benzoic acid is 6.50 ⋅ 10-5.
One mole of water vapor is expanded reversibly from 5L to 15L at a temperature of 800K. Calculate q, w, deltaE for this process assuming that water behaves as a van der Waals gas,
A NaOH solution that is 18.1M, has a density of 1.250 g/ml. What is the molality? Mass Percent? and Mole Fraction?
0.90 g of hydrogen chloride hcl is dissolved in water to make 2.5 l of solution. what is the ph of the resulting
The specific heat of the brick is 0.85 J/g-K. How many bricks must be incorporated into the interior of the house to provide the same total heat capacity as 1.1 103 gal of water
Determine the total number of valence electrons in each of the following: a) SBr2; b)NBr3; c) CH3OH; d) NH4^+.
where can be (green), (brown), or (purple). Examine the three figures below representing equilibrium concentrations in this reaction at the same temperature for the three different halogens. Rank the equilibrium constants for these three reactions..
what is the molarity of a solution created by dissolving 75.3 grams of sodium carbonate in enough water to create 2.50
The electrode acts as the anode, and the electrode acts as the cathode. To maintain electric neutrality, you add a salt bridge separating the two half-cells. What is the net cell reaction for the chromium-silver voltaic cell?
could the separation in this experiment have been done in a different order? for example if mixture were first
Describe the most important toxic gases in smoke.
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