05/23/18

A RATE OF 25 miles per hour is equivalent to a rate of how many feet per second ?
1 mile = 5280 ft
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05/23/18

what is the right formula?
Suppose synthesis of Al2O3 is done in the lab using 20.50 g of Al and excess of O2. Upon purification, 35.48 grams of Al2O3 is produced. What is the percent yield of Al2O3?
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05/22/18

3:1 ratio that is chemical to water. I want to make 55 gallons of the solution. How many ounces of chemical do I need?
 chemical dilution
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05/22/18

How many moles of glucose, C6 H12 O6 , can be "burned" biologically when 18.2 mol of oxygen is available?
C6 H12 O6 (s) + 6O (g) --> 6CO (g) + 6H O(l)   show all work
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05/22/18

How many grams of each reactant will be needed to make 100 g of lithium chloride?
Chemistry questions Li (s) + Cl2 (g) ---> LiCl (s)
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05/21/18

How many grams of each reactant will be needed to make 100 g of lithium chloride?
Chemistry questions
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05/21/18

How does hydrochloric acid and Ethanoic acid react similarly or in the same way?
i have a chemistry test tommorow please answer asap
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05/21/18

When HCl reacts with Mg, MgCl2 and H2 are produced. How many miles of Mg are needed to react with 1.1 miles of HCl?
It's a stoichiometry problem.
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05/21/18

When 14g of calcium metal is reacted with water 5g of calcium hydroxide is produced. Calculate the percent yield for the reaction
A question about percent yield and how to calculate it given different masses
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05/21/18

Mixing: distilled water, alcohol, aluminum sulphate and glycerin.
I am trying to make a mixture of the following ingredients: distilled water, alcohol, aluminum sulphate and glycerin.The problem is that when I add alcohol to the water and aluminum sulphate... more
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05/21/18

Science pls help
Using the balanced equation 3Ba+Al2(SO4)3-->2Al+3BaSO4, what is the limiting reactant if 1 g of Ba reacts with 1.8g of Al2(SO4)3?     Using the balanced equation... more
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05/21/18

How many litres of air is required?
How many litre of air is required to produce 2kg co2 gas ?
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05/20/18

balance the following equations and tell what type of reaction they are
1. __FeS+__HF=__H2S+__FeF2 2. __Al+__HBr=__AlBr3+__H2 3. __Fe+__O2=__Fe2O3 4. __Ag+__O2=__Ag2O 5. __Ca(NO3)2+__NaOH=__Ca(OH)2+__NaNO3 6. __Na+__I2=__NaI 7. __KCIO3=__KCL+__O2 8.... more
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05/20/18

How many grams of copper are in the the resulting mixture?
An alloy is a mixture of metals. Suppose that a certain alloy is made by mixing 200 grams of an alloy containing 45% copper with 120 grams of an alloy containing 75% copper.
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05/20/18

The difference between the boiling and freezing point
The difference in the boiling point and freezing point of an aqous solutions of glucose 105°C.how much glucose should be dissolved in 1Kg of water? The Kf= 1.86K Kg/mole.Kb=0.51 K/m.molar mass of... more
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05/19/18

Dimensional analysis question #4
How many grams of copper(i) acetate contain 4.55 grams of Cu+?
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05/19/18

Dimensional analysis question #3
How many grams of Cu+ are present in 4.40 grams of copper(i) acetate?
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05/19/18

Dimensional analysis question #2
How many grams of iron(iii) cyanide in 3.26 grams of Fe3+?
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05/18/18

balance equation and what type of reaction this is
____Ca(NO3)2+____NaOH=____Ca(OH)2+NaNO3   ____Mg(NO3)2+____K3PO4=Mg3(PO4)2+____KNO3
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05/18/18

ZnBr2+Al=Zn+ABr3
please balance the equation
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05/18/18

You took 140 mg of medicine yesterday. The half-life of this medicine is 14 hours. How much will be left in your system after 30 hours?
You took 140 mg of medicine yesterday. The half-life of this medicine is 14 hours. How much will be left in your system after 30 hours?
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05/17/18

across what membrane is there a pH differential (H+ gradient) caused by an imbalance of h+ ions? on which side of the membrane are there more H+ ions?
across what membrane is there a pH differential caused by an imbalance of h+ ions? On which side of the membrane are there more h+ ions?
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05/17/18

what are the products of glycolysis
and where does glycolysis take place
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05/17/18

If you started with 5.64 grams of H2SiCl2, how many grams of HCl will be produced?
If you started with 5.64 grams of H2SiCl2, how many grams of HCl will be produced?  
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05/16/18

Percent Yield
Aspirin, C9H8O4 (180.2 g/mol) is prepared by the following reaction:   C7H6O3 + C4H6O3 → C9H8O4 + C2H2O2   If you need to prepare 45 g of aspirin, and the yield for the reaction is 85%, how... more
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