08/17/18

Write the balanced chemical equation for the reaction below
Remember to include states, and indicate the type of reaction (S, D, C, SD, DD). Be sure to show your work.   Aqueous sodium carbonate is mixed with hydrochloric acid
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08/17/18

A 30.00 ml gas syringe was at a pressure of 100.0 kPa at 30.0°c
A 30.00 ml gas syringe was at a pressure of 100.0 kPa at 30.0°c. On the following day, the temperature dropped to 26.0°c and the new volume was 23.1 mL. What was the atmospheric pressure on this day?
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08/17/18

Excess sodium phosphate is mixed with 361.3 mL of strontium chloride at a concentration of 0.609 mol/L.
Excess sodium phosphate is mixed with 361.3 mL of strontium chloride at a concentration of 0.609 mol/L. If the reactions has a 43.26% yield, what is the mass of dry precipitate actually collected?
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08/16/18

Acid base chemistry
how many molecules of sulphuric acid is needed to neutralize 5ml of sodium carbonate and 5 volume of tetra ox's sulphate(iv) acid when heated at the temperature of 20 Celsius using nickel as a... more
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08/15/18

how many grams of H2SO4 must be weighed out? Assume a molar mass of 98.1g/mol and give the answer to 2 significant figures, with units, such as 12g.
In order to make 0.100L of a 6.0M solution of H2SO4, how many grams of H2SO4 must be weighed out? Assume a molar mass of 98.1g/mol and give the answer to 2 significant figures, with units, such as... more
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08/15/18

CALCULATE THE MASS OF ARBON (IV) OXIDE FORMED WHEN 3.0g OF CARBON ARE BURNT (C=12, O=16)
YOU ARE TO CALCULATE THE MASS OF CARBON (IV) OXIDE FORMED WHEN 3.0g OF CARBON ARE BURNT HERE IS THE FORMULAR (C=12, O=16)
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08/14/18

How many drops of antibiotic should the marine biologist apply?
The average blue whale has a length of 2500 centimeters. The distance from Jupiter to Saturn is 6.46 x 108 km. How many blue whales lined up tip to tail would it take to reach Saturn from Jupiter. ... more
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08/14/18

54 is 60% of what number?
What's the correct answer 
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08/13/18

why heat is formed when methanol mixed with water?
when methanol mixed with water heat is formed.what is behind it 
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08/13/18

(01.05) A square has a side of 6.25 feet. What is the area in square feet? Round to the correct significant digits.
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08/13/18

What is the name of As2S3 using Classical Method in naming Ionic compound?
What I mean in As2S3 is As2S3 
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08/12/18

in (CH3)3CCH2CH(CH3)2 how many 1°, 2°,3°4°Carbon atom are "present"
in (CH3)3CCH2CH(CH3)2 how many 1°, 2°,3°4°Carbon atom are "present"
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08/12/18

What's a non-toxic and safe alternative to ammonium sulphate precipitation?
I'm trying to isolate albumin in egg whites and I was told to further separate it with ammonium sulphate. However, I heard that it was toxic to use, so is there an alternative?
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08/11/18

in the manufacture of potassium permanganate a solution containing manganate ion is oxidized by chlorine. Would bromine or iodine be as good?
in the manufacture of potassium permanganate a solution containing manganate ion is oxidized by chlorine. Would bromine or iodine be as good?
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08/11/18

Use the idea about electronegativity
1.Explain why the bonding in ALF3 is ionic but the ALCL3 is covalent .
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08/11/18

Describe and explain how
1.Atomic radius changes across a period and how atomic radius changes down the group
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08/10/18

A laboratory experiment requires 6.2 L of a 0.025 M solution of phosphoric acid (H3PO4), but the only available solution is a 12.0 M stock solution.
How could you prepare the solution needed for the experiment?
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08/10/18

If I am going 100 miles at 65 mph how long will it take
Looking for a answer to prove my point 
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08/09/18

The density of a liquid is 8.03^4 x 10^-1 kilogram per liter. What is the mass (in kg) of liquid in a full 100,000 liter tank?
Using Scientific Notation, what would be the answer to" density of a liquid is 8.03^4 x 10^-1 kilogram per liter. What is the mass (in kg) of liquid in a full 100,000 liter tank?" the ^are to... more
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08/09/18

a gasoline tank is 40% full.the gasoline boy has loaded 21.6 liters to fill it.how many liters of gasoline can the tank hold when full?
please answer my question?
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08/09/18

when you have an equation and you are doing moles.. do you add the number infront of the compund(balancing) for the rmm
i just got confused when you are doing a calculation and there is the balancing do you multiply the coumpound ram by the number?
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08/08/18

aqueous potassium chloride will react with which of the following?
aqueous potassium chloride will react with which of the following? A. calcium nitrate B. sodium bromide C.lead nitrate D.barium nitrate E. sodium chloride   I know the answer is lead nitrate... more
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08/08/18

What is the chemical reaction of capsaicin and nicotine dipicrate?
For thesis purposes
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08/07/18

In iron (III) sulfide, what does the 3 in the parenthesis stand for?
I was thinking that it might be the amount of times sulfur is added to the compound but I'm not sure. 
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08/07/18

the sum of digits of two-digit number is 15. interchanging the digits of this number increases it by 9. find the number
translate this world problems to a system of equations
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