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What are the transition metals in a periodic table ?
a 25.0 ml sample of river water was titrated with 0.00100 m na2cr2o7 and required11.5 ml to reach the end point. what
A voltaic cell is constructed by immersing a strip of silver in a 1.0M AgNO3 solution and a strip of cadmiun metal in a 1.0M Cd(NO3)2 solution. The circuit is completed by a wire and a salt bridge in the usual way. Write the balanced half-reaction..
Iron pyrite, commonly known as "fool's gold," is 46.5% Fe and 53.5% S. A crystal of iron pyrite contains 4.24g of iron. A) Calculate the mass in grams of the crystal. B) How many moles of iron is in the crystal
Identify how precitipation reactions can be used in the water treatment and purification processes to help maintain a safe municipal water supply.
Draw a formula for the lowest molecular weight compound that contains C, H, and possibly O, is a chiral compound, contains ONLY one functional group,
The decomposition of NOBr is studied manometrically because the number of moles of gas changes; it cannot be studied colorimetrically because both NOBr and Br2 are reddish-brown.
A sample of helium has a volume of 3 liters when the pressure is 500 torr. What volume does the gas occupy at 300 torr?
The rate of vaporization of a liquid can be increased by 1)increasing the surface area 2)increasing the temperature 3)decreasing the
Compute the cell potential(E) after the reaction has operated long enough for the [Al3+] to have changed by .60 mol/L. suppose T=25 C
You analyzed the C18 content of a sample of ground beef. You took 5 g of beef, homogenized into buffer and centrifuged. The volume of the supernatant was 14 ml.
Aluminum chlorhydrate is added to antiperspirants to stop people from sweating. If this compound contains neutral H2O molecules and Al3+, OH- and Cl- ions, and the formula of this compound is Alx(OH)5Cl 2H2O, what is the value of x in this formula
Is there a list of hazardous or safe chemicals for Thailand? Where can I find it?
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