Chemistry

Chemistry question about gas law is below

0 Search Results for A helium gas bottle with an internal pressure of 790 mmHg and a volume of 1023 cm^3 at 24 Celsius is left in the sun and te temperature rises to 55 Celsius. What is the new pressu

Check chemistry homework (ideal gas law)

Given the following sets of values for three of the gas variables, calculate the unknown quantity. P=782.4 mm Hg; V=?; n=0.1021 mol; T=26.2 degrees Celsius I got .0390 L Is this right? Thanks!!-PV

Can someone explain this to me

http://www.grc.nasa.gov/WWW/K-12/airplan… Animated Boyles Law-Thats pretty entertaining. :) Boyles Law is pV=K. p = Pressure V = volume K = constant Basically, as pressure goes up, volume decrease

Calculate the mass percent composition of carbon in each the following carbon compounds

C3H4 C2H4 C4H10 C2H6O I need them in four significant figures-Divide atomic weight of carbon by molecular weight of the compound and multiply it by 100. C3H4: Mass % C = 36.033 x 100 / 40.0641 = 89.

How would you write a reaction for sulfuric acid reacting with sodium hydroxide

would it be h2so4 + 2naoh --> h3o + na2so4?-Almost, it would be 2 H2O, not H3O. H2SO4 + 2 NaOH --> Na2SO4 + 2 H2O

Why are the noble gases so small using relative atomic size and so big with van der waals atomic radii

I just got a question on my gcse revision paper about the trend in relative atomic size across period 3, from sodium to argon, and i dont recall ever being taught ANYTHING about the relative size of a

Is O3 Polar or Nonpolar??EMERGENCY!!

So my A.P. Chem exam is tomorrow, and it just really freaked me out that my review books just claimed that O3 is polar. How is that possible? There cant be a difference in electronegativity between th

Barbituric acid, HC4H3N2O3, is used to prepare various barbiturate drugs (used as sedatives). Calculate the c

Barbituric acid, HC4H3N2O3, is used to prepare various barbiturate drugs (used as sedatives). Calculate the concentrations of hydronium ion and barbiturate ion in a 0.15 M solution of the acid. The va

List all the kinds of intermolecular forces that are present in each element or compund.

a. CH3OH b. Rn c. CO2 d. N2 e. CH3Cl i know they all have dispersion, but what else? please explain! thanks!-Yes its true that all t hese compounds and elements have dispersion. a.) This has an Ion

What type of catalyst is each of these

-potassium iodide solution -solid manganese dioxide -solid contact lens cleaning disk -potato The different ttypes of catalysts are enzyme, heterogeneous, homogeneous, and sit.-This is hard to tell.

Calculate the concentration (M) of an acetic acid HC2H3O2 solution if 17.5 mL of that solution required 29.

NEED HELP W THIS CHEM PROB! THANKS! Calculate the concentration (M) of an acetic acid HC2H3O2 solution if 17.5 mL of that solution required 29.6 mL of 0.250 M KOH for the titration. HC2H3O2 (aq) + K

How do you turn (g solute/100g H2O) to percent mass

I dont know what the formula is or how to convert, I know its probably really simple, but I dont want to get it wrong. Please help! Thanks!-easiets way is to assume a mass.since this is based on 100g

I need help doing this chemistry problem

A 0.105g sample of a diprotic acid of unknown molar mass is dissolved in water and titrated with 0.1288 M NaOH. The endpoint is reached after adding 15.2 mL of base. What is the molar mass of the un

To which category does this chemical reaction belong to

K2SO3 + 2 HNO3 = H2O + 2 KNO3 + SO2 Its combustion right? (Why...?) And this one NH4OH = H2O + NH3-Its not combustion since theres no addition of oxygen molecules. The second equation is a decomposit

Which of the following mixtures has the lower pH

a) equal volumes of 0.10M HClO4 and 0.10M NaOH b) equal volumes of 0.10M HClO4 and 0.10M NH3-my guess would have to be that NaOH is a stronger base (high pH) and NH3 is a weak base (so a lower pH) s