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A brick has a mass of 4.0kg and the Earth has a mass of 6.0*10^27g.
Be sure your answers have the correct number of significant digits.
What is the mass of 1 mole of bricks?
How many moles of bricks have a mass equal to the mass of the earth? Write answer as a decimal to one decimal place.
A 5.0 ml sample of vinegar was titrated with 7.2 ml of 0.55 M NaOH. if the density of vinegar solution is 1.00g/ml, what is the mass percent of acetic acid present.
If the solution had 100mg of trans-lycopene in it, how many moles of elemental bromine would be required to completely react at all possible reaction sites? How many total stereocenters are formed. How many different products are there
what are the advantages and disadvantages of recycling
The specific heat of water increases at a constant rate. The specific heats of NaOH, HCl, and the product of the reaction are the same as that of water.
Consider methyl cyanide, H3CCN. a.) Draw the best possible Lewis structure of methyl cyanide. b.) Predict the geometry and hybridization of each carbon atom. c.) Describe the bonding in this molecule in terms of sigma
Suppose a 5.00mL sample of vinegar required 27.58mL of 0.123 M sodium hydroxide to reach the endpoint. What is the molarity of acetic acid in the vinegar?
Correct orders the solubility, from greatest to least, of NaCl in the solvents BF3, H2O, and CH3(CH2)2OH
What is the pH of a 0.125 M solution of the weak base B if (delta) H= -28.0 kj and (delta) S = -175 J/K for the following equilibrium reaction at 25 degrees C. B(aq) + H20 (l) BH+ (aq) + OH- (aq)
Galvanized nails are iron nails that have been plated with zinc to prevent rusting. The relevant reaction is Zn2+(aq)+2e??Zn(s) For a large batch of nails
Cyclopropane (C3H6) reacts to form propene (C3H6) in the gas phase. The reaction is first order in cylclopropane and has a rate constant of 5.87 x 10^-4/s at 485 degrees Celsius.
What is the Ksp value for KHT at 10°C, 23.5°C, 35.0°C and 50.0°C?
Calculate the concentration of malonate ion (C3H2O4 2-) in a 0.200 M solution of malonic acid (C3H4O4). The malonic acid, Ka1 = 1.4 x10^(-3), Ka2 = 2.0 x 10^(-6)
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