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1. What is the advantage of using the graduated cylinder rather than a pipetter or a burette for measurement of approximate volumes?
2. Why is the burette more versatile than a pipette for measuring volumes of liquids?
3. Why is an average of several trials taken in each case rather than the results of a sungle trial?
4. Even if the volume of the water could be measured very accurately, there would still be uncertainly in the mass of the water. what is source of error have we not take account?
What is the error will happen in this lab?
How many grams of TiCl4 are needed for complete reaction with 105L of H2 at 430 degrees C and 790mmHg pressure. How many liters of HCl gas at STP will result from the reaction described in part (a)
Write the balanced formula unit equation for the reaction of magnesium with hydrochloric acid. What is the sum of the coefficients? Don't forget coefficients of one
In order to raise the temperature of 266 g of methane gas from 25.0 C to 40.0 C, how much heat energy in kilojoules is required given that the specific heat of methane gas is 2.20 J/(g*C)
The specific heat capacity of the solution produced was 4.20J/g*Celcius, and final temp reached was 34.91 degrees c. How much heat was produced by the dissolution
Nitrosyl bromide, \rm NOBr, is formed in the reaction of nitric oxide, \rm NO, with bromine, \rm Br_2: \rm 2NO(g)+Br_2(g)\rightleftharpoons 2 NOBr(g) The reaction rapidly establishes equilibrium when the reactants are mixed.
Blocks mass is 50.0 g in air. while placed in water (20 Celcius, d=.99821 g/cm3), the block only weighs 5.6 grams. Explain what is density of the block
suppose that 1.331 g of impure barium hydroxide is dissolved in enough water to produce 250. ml of solution and that
If the water initially has a temperature of 26 0C, how many kilojoules of heat must be removed to cool and freeze the water at 0 0C?
Describe the hybrid orbitals used by the central atom in O 3 .and also determines what is the number of sigma and pi bonds present in O 3 .
2H2S (g) + 3O2 (g) → 2H2O (g) + 2SO2 (g) If 3.50 G Of H2S Are Used In The Above Reaction, What Will Be The Theoretical Yield Of Water In Grams?
To prepare a fertilizer, an engineer dilutes a stock solution of sulfuric acid by adding 28.8 L of 3.00 M acid to enough water to make 500. L. What is the mass of sulfuric acid per milliliter of the diluted solution
Nitric oxide has a density = 1.782 g/L at the temperature of 12.64 degree celsius and pressure of 670.7 mm Hg determine the mass percent of Sulfur dioxide?
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