04/29/18

numerical on law of multiple proportion
Copper gives two oxides , on heating 1.0gm of each in hydrogen gas, 0.888gm and 0.799gm of the metals are produced . Show that the results agree with the law of multiple proportion.
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04/29/18

which is reduced
In the reaction H2CO3(aq)+2NH3(aq)→2NH4+(aq)+CO32-(aq), which substance is reduced, and how many electrons are transferred?
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04/29/18

which is oxidized
In the reaction 2H2O(1)+2CI-(aq)→H2(g)+CI2(g)+2OH-(aq), which substance is oxidized, which substance is reduced, and how many electrons are transferred?
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04/29/18

the reaction
In the reaction 2Mg(s) +O2(g)+2H2O(1)→2Mg2+(aq)+4OH-(aq) which substance is reduced, how many electrons are transferred and which substance is oxidized?
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04/29/18

chemistry hw
An oxidant is a substance that can accept the electrons from another reagent. Use electronegativity values to determine which one of the following elements is a good oxidant.FLiNi
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04/29/18

chemistry hw
Rank the following molecules or ions in order of decreasing bond length using their bond order to predict relative lengths:fluorine: F2, oxygen: O2, nitrogen: N2   is it N2>O2>F2
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04/29/18

chemistry hw
Determine the number of bonding electrons and the number of nonbonding electrons in the structure of SI2.Enter the number of bonding electrons followed by the number of nonbonding electrons,... more
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04/29/18

Guys please help me with this. Please
The air consists of nitrogen (78% by volume), oxygen (21%) and Argon (1%).A. Determine the volume occupied by 1 mole of the mixture at P = 1atm and T = 273KB. Determine the volume occupied by each... more
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04/28/18

chemistry hw
Rank from most to least electronegative. To rank items as equivalent, overlap them: Cobalt, Potassium, Phosphorus, Fluorine
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04/28/18

chemistry hw
Classify each element as a metal, nonmetal, or semimetal: Zn, Mg, Si, F, Pb, Ar  
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Hw1

04/28/18

chemistry 111
      H                                                   H    H-S-C-H ( C is 4 dots)                     H-C-S-H (S is 4 dots)        H                                                  H       ... more
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04/28/18

calculate the molar concentration of a 40% solution (w/w) of NaOH that has a specific gravity of 1.605
topic: solutions
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04/28/18

1lb., 8 oz + 3lb., 10 oz
Write in simplest form 
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04/28/18

concentration of
For the reaction BaSO3 (s)↔ BaO (s) +SO2(g), the equilibrium constant is 0.345M. What is the concentration of SO2 at equilibrium?
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04/28/18

standard reaction
The rate of a standard reaction is 0.01840 M/s at 25° C. It is determined that this is too fast, and that the rate should be reduced to 0.0046 M/s.  What temperature should the reaction be run at... more
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04/28/18

first order reaction
CH3OH+KF→KOH+CH3F is a first order reaction for all of the reactants, with a rate constant of 0.0123 1/Ms. Find the instantaneous rate for this reaction if the initial concentration of CH3 Oh is... more
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04/27/18

IUPAC name of CH3-CH2-NH-CH3
IUPAC name for the compound CH3-CH2-NH-CH3
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04/27/18

explain how you can tell which has the larger atomic radius: Zr and Ag?
 chemistry question
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04/27/18

How does brain activity change while you are asleep?
psychology questio
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04/27/18

How many electrons does Br have
Need help for science homework, having trouble finding It 
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04/27/18

Please help me to solve this
The sulfur dioxide is 90% removed from flue gas. The SO2 is emitted into the air in (mg/MJ). The heatvalue of the oil is 40 MJ/kg. What is the SO2 emission in mg/MJ  
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04/27/18

saline solution
1000 ml of a saline solution contained 52% salt.  How much water should be added to make the solution 51% water?
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04/27/18

Flue gas problem solving needed pt.2
Hi, Can anyone help me with these excercises. The car consumes octane 8 liters per 100km (8l/100km). How to calculate 80 km journey's exhaust fumes total mass. Octane's density is 0.75 kg/dm3 The... more
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04/26/18

If 12 moles Of O2 are burned, how many grams of CO2 are produced?
Balanced Equation: C3H8 + 5O2 = 3CO2 +4H2O
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04/26/18

You remove 500.0 g of ice at -20.0°C.How much heat is required to convert the ice into steam at 130 °C?
You remove 500.0 g of ice at -20.0°C from the freezer and place in a pot on the stove. How much heat is required to convert the ice into steam at 130 °C, assuming no water is lost? This is a five... more
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