Chemistry

Can someone please solve this Organic Chemistry Calculation.

Petrol from vehicles contains hydrocarbons with from five to twelve carbon atoms. If we assume the average number of carbon atoms per molecule is 8, then petrol can be represented as octane. Using thi

What is the lowest temperature water can be and still remain liquid (Celsius)

I know the transition from liquid to solid is probably not easy to measure. I am not looking for an exact answer but a reasonably accurate one.-0॰C is the freezing point (at sea level pressure), so an

Given 1.2 L of a 2.2 M sodium sulfate solution, calculate the volume in liters you would need to

Given 1.2 L of a 2.2 M sodium sulfate solution, calculate the volume in liters you would need to add to obtain a 0.5 M solution of sodium sulfate?? How to I go about solving this problem? is there a

How many grams of carbon are there in 24.0g of C3H8O

i need to know the answer and how to do it cause im stumped-total mass of mole of compound = 3 (12 g) + 8 (1 g)+ 1 ( 16 g) = 60 g percent mass of carbon in compound = 3 (12 g) / 60 g = 60% 60% * 24 g

Do we always need to balance chemical equations (when applicable)

Is there ever a time when balancing chemical equations isnt neccessary..?-Yes, there are times when you dont need to balance the equations - mostly in organic chemistry. In gen chem, the only time I

Chemistry Help - I Don't Understand This Question!?!

Would you be able to determine if K2CO3 was present in a mixture of a solid K2CO3 and KCl If you used only concentrated H2SO4 as a reagent? Explain. what is it asking and whats the answer help would b

Is Sodium bicarbonate, bicarbonate of soda, sodium hydrogen carbonate all the same as baking soda?.

yes you are looking at newer and older naming conventions for the same subsance

Scientifically, what is the purpose of baking soda in cooking

something to do with releasing carbon dioxide, neutralising the acid in cooking... I dont know?-the purpose of baking soda in cooking? Baking soda = NaHCO3 Common name = Bicarbonate of Soda See th

How many miles/hour is 13.9 meters/second

The answer is 31.275 miles/hour. Take 13.9 meters/second.Multiply thatby 60 seconds/minute and multiply it again by 60 minutes/hour.Then divide that by 1600 meters/mile. 13.9 x 60 x 60 / 1600-13.9 (

How do I convert the following to moles

How do I convert the following to moles? 1) 458166 atoms of H2O2) 12.056 atoms of H2SO4-Divide the quantities by Avogadros constant, or 6.02*10^23.

Help with chemical analysis for practical work

OK, so they give me a solution containing 2 anions and 2 cations. They tell me to add NaOH. (I get an off-white precipitate, so one of the cations is Mn2+) They then tell me to filter the mixture (so

10 Points. Enthalpy change problem.

A coffee-cup calorimeter is calibrated by adding 1840 J of heat to the water in the calorimeter and measuring a 1.72 oC rise in temperature. When some NH4NO3(s) is added to the same water in the calor

[Chemistry - Energy change] Help me with this Chemistry question, I'm a little confused

A thermometer is placed in water and the temperature is measured as shown [ 42.5 degree c. ] An endothermic change takes place as a solid is dissolved in the water. The temperature changes by 4.5 degr

Number of gallium atoms in 5.0g of gallium

how do i do this??-Molar mass of galium=69.72 g/mol #atoms per mole of gallium = 6.02*10^23 5.0 g/69.72 g/mol*6.02*10^23atom/mol= 4.32 *10^ 22 atoms.-5.0/Atmoic mass of Gallium (use periodic table)

Need chemistry hw help problem!!

To find the molarity of sulfuric acid, H2SO4, it is titrated with .75M KOH. It requires 328.5 ml of KOH to neutralize a 40ml sample of sulfuric acid. Calculate the concentration (mol/L) of the sulfuri