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An asteroid fragment contains carbon, it may burn when entering the Earth's atmosphere. What is the most likely compound to result from this process
A 20.94 g sample of an unknown metal is heated to 99.4 C in a hot water bath. The metal is quickly transferred to 100ml of water at 22.0 C in a coffee cup calorimeter.
The following table lists molar concentrations of several ions in seawater. Using a density of 1.022 g/mL for seawater
How many mL of a 0.8 M NaOH(aq) solution are required to make 500 mL of a solution with pH=12.50?
A 100.0 mL of 10.0 mM phosphate buffer, pH 7.5 (pka2 = 7.2). You are provided with 0.200 M KOH and 0.100 M KH2PO4 solutions, Calculate volume of KOH and KH2PO4 solutions
The acid-dissociation constants of phosphoric acid (H3PO4) are Ka1 = 7.5 × 10-3, Ka2 = 6.2 × 10-8, 25) and Ka3 = 4.2 × 10-13 at 25.0 °C.
How many moles of oxygen are combined with 4.20 moles of chlorine atoms in C2O7?
A standard l00-ppm quinine solution registered 125 when measured under conditions identical to those for the diluted sample. Calculate the mass in milligrams of quinine in the tablet.
Describe how branched-chain fatty acids affect the fluidity of membranes and rank the following fatty acids in the order of increasing solubility in water.
Boron often forms compounds that do not comply with the octet rule that are termed electron deficient. BF3, whose structure is shown below on the left, is an example of an electron deficient compound.
The formula for the illegal drug cocaine is C17H21NO4. What is the percentage of hydrogen in the compound?
In the reaction of aluminum metal and oxygen gas to make aluminum oxide, how many moles of aluminum will react with 0.80 grams O2?
Sketch a voltaic cell represented by the line notation below. Write the overall balanced redox reaction equation and calculate Eocell Mn(s) | Mn2+(aq) || ClO2-(aq) | ClO2(g)
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