Solution from a rebuilt auto battery
An Auto mechanic spills 91 mL of 2.3 M H2SO4 solution from a rebuilt auto battery. How many milliliters of 1.5 M NaHCO3 must be poured on the spill to react completely with the sulfuric acid?
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Measurements also show that a certain sample of the unknown compound contains 6.9 mol of oxygen and 2.32 of chromium. Write the complete chemical formula for the unknown compound.
How many mL of a 0.136 M aqueous solution of aluminum bromide, AlBr3, must be taken to obtain 17.3 grams of the salt?
At 25 degrees of NH3 (molar mass 17 grams) effuses at the rate of .50 mole per minute. Under the same conditions, which of the following gas effuses at approximatly one-half that rate?
How much heat is needed to melt 1050g of the unknown at 510k. the melting point of the solis unknown is 670k and the boilding point is 800k.
Compute the atomic packing factor for the diamond cubic crystal structure (shown in the figure below). Assume that bonding atoms touch one another, that the angle between adjacent bonds is 109.5o, and that each atom internal to the unit cell is p
Write the word, formula, and chemical equations for the reaction between hydrogen sulfide gas and oxygen gas that produces sulfur dioxide gas and water vapor.
Table salt and sugar are accidentally mixed A 4.90g sample is burned and 2.20-g of CO2 is produced. What is the mass percentage of salt in the mixture?
Calculate the molar concentration of a solution prepared by dissolving 5.4 g of sodium sulfate (MW = 142) in enough water to make 500 ml of solution ?
What is the density in g/mL of a sphere with a diameter of 4cm and a mass of 1.35 grams? What is the percent error if the actual density of the sphere was 7.87 g/mL?
3.60 g of liquid methanol, CH3OH, is placed in an empty 20.0 L container at 45.0°C. If the volume of the container is compressed to 1.40 L at 45.0°C, how many grams of vapor are present?
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