09/17/18
Chemistry Problem
1 FeS + 2 HCl → 1 FeCl2 + 1 H2S
Determine the mass (in g) of H2S that would be produced when 8.21×10-1 g of HCl reacts with an excess of FeS.
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09/17/18
W+X===Y+Z concentration of w and x are each 0.6 and when equilibrium is reached concentration of Y is 0.4 .calculate equilibrium constant.
Please solve
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09/17/18
A giant anteater is able to eat 7.0 lb of ants in a day. If an ant has a mass of 85 mg, how many ants does the giant anteater eat in a day?
Answer should be written as _______X10^4 ants.
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09/17/18
What is the original temperature of the mercury?
as a 5.00-kg sample of liquid mercury is cooled into a solid, it liberates 157 kJ of energy.
For mercury, the melting point is 234 K, the heat of fusion is 11.3 kJ/kg, and the specific heat is 140...
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09/16/18
what way is an IV dose of azithromycin different than an oral dose in terms of its dose, onset of activity, effect on the infection and on the body
CHEMISTRY NURSING MAJOR
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09/16/18
What is the energy change when the temperature of 12.4 grams of solid silicon is decreased from 38.4 °C to 22.1 °C ?
Hi, I need help with my chemistry class. If you can help I'd be eternally grateful.
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09/16/18
If a 115 gram bagel is 300 calories, how many calories is a 85 gram bagel?
if a 115 gram bagel is 300 calories, how many calories is a 85 gram bagel?
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09/16/18
The question is to explain why it is considered work done or not
Explain the following observation
Mary's mother, who is pushing a grocery trolley, is considered to be doing work.
Mary, who is carry a 10kg packet of rice while walking, is not considered to be...
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09/15/18
Metric conversion
a Dr. orders 225mg of morphine. It is only available in a 0.40 g/mL solution. How many mL of the solution are required?
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09/14/18
how many liters of each solution will be required to make the mixture?
nora works at a pharmaceutical company as a chemist. to meet the demands of the clients she was told to prepare 100 liters of 25% solution, she has on hand a 15% alcohol solution and a 40% alcohol...
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09/13/18
Heat Equation
You want your water to be exactly 40.0 celsius. You have prepared 100. kg of water, but it is only heated to 38.5 celsius. You hurry over to a pot of boiling water, figuring that you can add just...
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09/13/18
A metal is known to have a density of 9.04 g/mL. How many kilograms of it are required to build a structure with a volume of 50. M3?
A metal is known to have a density of 9.04 g/mL. How many kilograms of it are required to build a structure with a volume of 50. M3?
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09/13/18
Grams of zinc
An 18 carat white gold necklace contains 75%gold 10% palladium 10% nickel and 5% zin. If the necklace weighs 70g how many grams of zinc are in the necklace
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09/13/18
10 mL of 0.2 M NiSO4 is mixed with 20 mL of 0.1 M CuSO4. Calculate the molarity of Ni2+, Cu2+and SO42- ions present in solution.
10 mL of 0.2 M NiSO4 is mixed with 20 mL of 0.1 M CuSO4. Calculate the molarity of Ni2+, Cu2+and SO42- ions present in solution.
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09/13/18
Calculate the molarity of a solution obtained by adding 10 mL of 0.1 M NiSO4 to 10 mL of solvent.
Calculate the molarity of a solution obtained by adding 10 mL of 0.1 M NiSO4 to 10 mL of solvent.
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09/12/18
How many liters of pure water should be mixed with a 7 liter solution of 60% acid to produce a mixture that is 90% water?
How many liters of pure water should be mixed with a 7liter solution of 60% acid to produce a mixture that is 90% water?
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09/12/18
What role does the mole ratio have in pharmacy calculations?
Is it because you need to make sure that the equations are equal?
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09/12/18
What would be the osmotic pressure of 500. ml of a 0.100 M K3PO4 solution
the problem doesn’t provide temperature, should i use 273k?
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09/11/18
5.2g of lithium dichromate. how many lithium atoms ?
5.2g of lithium dichromate. how many lithium atoms ?
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09/11/18
A gas fills a 100 mL cylinder fitted with a piston at a particular temperature and pressure.
A gas fills a 100 mL cylinder fitted with a piston at a particular temperature and pressure. If the volume of the gas is halved by pushing in the piston, and at the same time the absolute...
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09/11/18
What is the maximum concentration of silver ions that can be present in a 2.0 x 10^-3 M sodium chloride solution?
How would this question be approached?
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09/10/18
A concrete block has a volume of 0.10 m3 and a density of 2,000 kg/m3 , what the weight of the block in water
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09/10/18
Blueberry high-fiber muffins contain 59 % dietary fiber by mass. If a package with a net weight of 17 oz contains six muffins, how many grams of fiber are in ea
simple conversion problem but i need help! please and thank you
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