04/02/17

76.68 grams of sodium chlorate are decomposed (2NaClO3->2NaCl +302)
how many moles of oxygen are formed? a. 0.36 b. 0.54 c. 1.06 d. 2.50
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04/02/17

Double Displacment
In a double displacement reaction, do the metals leave their original non-metal to find the other non-metal, or vice versa?
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04/02/17

How many liters of CO2 at STP are produced from the complete combustion of 23.2 g C4H10?
What volume of oxygen will be required ?
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04/02/17

How many liter of CH4 at STP are required to completely react with 17.5 L of O2
CH4(g)+2O2(g)=CO2(g)+2H2O(g)
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04/01/17

How much oxygen (in grams) will form from 44.2 mg of N2O5? 2N2O5(s) → 4NO2(g) + O2(g). __?__× 10^-3(g) O2
Help me understand how to get the answer. Step by step would be nice...?
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04/01/17

Your friend lives 16 miles away. If it is 6:24, how fast would you need to drive to arrive at your friend's house by 6:45?
Need to explain the reasoning of the answer. 
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04/01/17

State regulations state that a wheelchair ramp should rise no more than 1 in for every horizontal ft. Find the slope of ramp
Please help
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03/31/17

Teachers : :: tailor : clothes
Please help me
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03/31/17

how much energy is needed to raise the temperature of 38 grams of ice at -27°C to water vapor at 134°C
how much energy is needed to raise the temperature of 38 grams of ice at -27°C to water vapor at 134°C?
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03/31/17

equilibrium
6) Calcium Oxide is used to remove pollutant SO2 from smokestack gases. The ΔG° of the overall reaction CaO (s) + SO2 (g) + ½ O2 (g) ⇔ CaSO4 (s) is -418.6 kJ. What is PSO2 in equilibrium with air... more
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03/31/17

Kp values...help
4) Carbon disulfide is a foul smelling solvent that dissolves sulfur and other nonpolar substances. It can be made by heating sulfur in an atmosphere of methane. 4CH4 (g) + S8 (s) ⇔ 4CS2 (g) + 8... more
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03/31/17

x2- solution
3) Elements of group 16 form hydrides with the generic formula H2X. When gaseous H2X is bubbled through a solution containing 0.3M HCl, the solution becomes saturated and [H2X] = 0.1M. The... more
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03/31/17

Chemistry Help
In a 1985 study of Little Rock Lake in Wisconsin, 400 gallons of 18M sulfuric acid were added to the lake over six years. The initial pH of the lake was 6.1 and the final pH was 4.7. If none of the... more
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03/31/17

A map has a scale of 1 in. = 5 mi. What distance is represented by a line a 8 in. Long? What distance is represented by a line 3.5 in. Long?
Please help I don't know how to do this 
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03/31/17

Solution problem is a discussion question must ans incomplete sentences and show work
 If you have two solutions for the one that is 20% acidic and the other solution that is 65% acidic and have the ability to mix as much or as little as needed of each, what is the range of acidic... more
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03/31/17

If a dozen eggs retail at $1.12, how much should a customer pay for half a dozen
It's a general math question no special points  
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03/31/17

35% off of $64.99 with a 7.5% sales tax
I dont understand this question. help please
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03/31/17

The length of a rectangle is 7 ft more than twice the width, and the area of the rectangle is 99 ft^2 . Find the dimensions of the rectangle.
i need an answer  
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03/31/17

Mary has four times the number of coins that John has. Together they have 150 foreign coins. Find how many coins Mary has.
I need to know how to write out this problem and solve it. I have tried it numerous times but still fail.
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03/31/17

Equation perimeter 76 feet length 3.5f longer than twice the width
Building fence perimeter equals 76 feet length 3.5 feet longer than twice the width solve equation dimensions 
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Lab

03/30/17

Calculate the pH of a 0.100 M KCN solution
Chemistry
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03/30/17

If the distilled water with which we make solutions is not neutral, would the calculated value of acid concentration be too large or too small? Explain please
chemistry
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03/30/17

Determining amino content.
1mL of Standard Glycine (7.5mg mL-1) was diluted into a 100mL volumetric flask. One standard had 0.30mL of the diluted standard glycine and 0.20mL of distilled water. How would I calculate the... more
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03/30/17

Kinetics ( Rate of reaction)
Sulfur concentration of desulphurised liquid pig iron using a basic slag at 1500 ºC is given below.   1. Calculate the rate of reaction 2. Prove that the desulphurisation reaction is a 1st order... more
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03/30/17

How do I convert mg to μmol?
How do I convert 0.075mg into μmol?
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