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In Europe, gasoline efficiency is measured in km/l . If your car's gas mileage is 40.0 mi/gal, how many liters of gasoline would you need to buy to complete a 142 km trip in Europe?
a sample is a mixture of agno3 cucl2 and fecl3. when a 1.0000-g sample of the mixture is dissolved in water and reacted
a plane flies from base camp to lake a 330 km away in the direction 20.0deg north of east. after dropping off supplies
Draw a tetra-peptide that FPHD at pH 2.0. Clearly indicate with a circle what groups would be charged if the pH was changed to 12.0. Draw a box around the peptide bonds
How many moles of luminol are present in 2.00 L of the diluted spray?
An oxyacetylene flame is often used in the welding of metals. Estimate the flame temperature produced by the reaction. 2C2H2(g) + 5O2(g) --> 4CO2(g) + 2H2O(g)
a sample of propanec3h8 contains 11.7 moles of carbon atoms. how many total moles of atoms does the sample
how many enantiomeric pairs are possible for a monobromo derivative of isopentane?
an acetic acid solution of 2.87 pH is titrated with 1.5 mL of bromocresol green. When the color changes to light green, the pH is 3.95. The final color of the solution is dark blue.
the density of phosphorus vapour at 310 degrees celcius and 75 mmHg is 2.64 g/L. What is the molecular formula of the phosphorous under these conditions?
The water bath conatins 2.90 kg of water at 27.6 degrees celcuis. During the reaction 110 kj of heat flows out of the flask into the bath. Calculate the new temperature of the water bath
100.0 ml of 0.100 M acetic acid is placed in a flask and is titrated with 0.100 M sodium hydroxide . An appropriate indicator is used. Ka for acetic acid is 1.7 x 10 -5. Calculate the pH in the flask when no NaOH has been added.
Which of the following correctly shows the oxidation numbers for each of the elements in H2PO4?, I2, and Al(OH)4
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