60,412 results, page 51
what is the molality of 18 g NaCl in 200 g of H2O?
What is the pH of a solution with [H3O+] = 1 x 10-9 M? My answer is pH=9. is that correct
what wil be the molarity if it increases from 20 c to 100 c?
grams of potassium permanganate are in 2.58 moles i don't get it ? help
Can somebody please answer my question.
Calculate the number of moles in 74.1 g Pb(C2H3O2)2.
a radioisotope is called a tracer when it is used to
What are some cons of becoming a pharmacologist?
What is the address of the 11 th electron of magnesium? And how do you determine this?
How to prepare 250.0 mL of 0.076M NaOH?
Outline the prepartion of 2-chlorobutane from an alcohol?
An equilibrium is dynamic. true or false
2) At 298K, what are the molarities of pure water?
What is the enthalpy change when 25 g's of PCl5 are decomposed /\ H= 90
calculate the density of NH3 at S650mm of Hg
How many grams of carbon are in 2.42 moles of C2H6
WHAT???? which of these are electrolytes?? CH3CH2OCH2OH PCl3 Na2CO3 O2
Calculate the pOH of a 0.410 M Ba(OH) solution.
How many kilocalories are required to produce 12.7g of aluminum?
Find the Density of xenon of STP
why gasoline wouldn't dissolve in water ?
Calculate the mass of 5.35 mol of iodine
what's the lewis dot diagram for methanol?
How to prepare 14M Sulfuric acid
How many oxygen atoms are in 6Al (SO4)3
How many mL of HCl solution are required to change pH from 2.67 to 9.25?
7.5 gm of chromium and 7.5 grams oxygen yield
who created the mcilvaine buffer system?
Why can't milk of magnesia (Mg(OH)2), act as a buffer?
calculate the density of NH3 gas at s.t.p.
d(g)--->3/2 e(g)+5/2 f(g) when e increases by .25 mol/l*s how fast is f increasing
How does a pH of a buffer solution go outside of its range?
What is the oxidation number of chlorine in Al(ClO4)3?
estimate the boiling point of Pcl3
calculate the PH of a buffered solution of HF and F (Pka of HF is 3.2)
How do you separate oxygen and methane gases?
A|A+3(0.1)||B+2(0.01m)|B GIVEN E°A|A+3=0.75v E°B|B+2=0.45v
What mass of copper will be deposited by a current of 7.89?
how many significant figures are in the measurement 0.002 ml? 2??
What is the mass of a 4 kg object, A. On the earth (g=-10 m/s/s) B. On the moon (g=-2 m/s/s)
What intermolecular forces are present in CSH2??
The molar volume of an ideal gas is
how many hao's exhibited by S16? my answer is 4?
What are some errors that can be made in colorimetry?
HCOOH + CaCO3 will give what (what are the products)
If there are 5,280 ft=1.00 mile ,how many miles are in 50,000 ft?
I want to make 10 ml solution of 80% NaOH and 20% KOH
What is the mass of 0.0137 mol of aspirin?
How many oxygen atoms are in 3.90 g of quartz?
0.00267m= how many nm? please show me how to set this up. thanks!
How many kJ is released when 3.4 mol of water is frozen?
would NBr3O be polar or nonpolar?
average atomic mass of isotopes
8.00 times10*19 molecules H2O to grams
How many atoms are in 448 grams of carbon?
What is the mass in grams of Br in 8.53 moles of FeBr5?
find the# of molecules in 5.3 moles of h20
give products of HgCl2 + KSO4
calculate the molar concentration of 0.1 " AgNO3
How many moles of platinum would be in 10.0 g of this metal?
Name a lustrous non metal?
Can a substance,that cannot be electrolysed,conduct electricity?Why?
what is the pH of .001M solution of acid (pKa=3)
How many grams of drug X are in 10 mL of a 1:200 solution of X?
Why is it important to not let the wooden split burn ?
At what ph will Al(OH)3 begin to precipitate from a .10 M solution of AlCl3?
What is the bond enthalpy of N2(g)+2H2(g) --> N2H4(g)?
How many oxygen atoms are there in 0.018 mg of H2O?
What is the mass of an atom's nucleus called?
How many kilojoules are absorbed when 318 g of Ca(OH)2 reacts?
name three characteristics of nonmetals
What is the pH of a 0.5 M solution of NaHCO3? Kb = 2.4x10-8 (base)
calculate the pH of 5M aqueous ammonia. Given kb=1.8 x 10^-5
What is the chemical formula for coconut oil?
What is the Lewis structure for salicylic acid ?
how many molecules are present in a 750 ml of C6H12O6
How to solve this problem in counting atoms 2 pb(CN)2
Would copper (II) phosphate be nonpolar?
Explain the trends in the solubility of water.
How can i synthensize 1g of salicylic acid from benzene
How can i synthensize 1g of salicylic acid from Phenol
What is the ionic strength of 0.2 M Na2HPO4 in a solution?
why we not use HNO3 and HCl in iodometry
How do you find the formula for nitric acid?
What does potassium nitrate form when it decomposes
How many molecular does 36.0 grams of water represent?
if i added (0.1N) 4.6 ml of NaOH to 10 ml of Ch3cooh calculate the ph
Calculate the mass of Mg needed to produce ~40 mL of H2. how do I do this?
Why is radius of Fe2+ less than that of Mn2+ ?
What happens to the pH of an acidic solution when it is heated
Complete the reaction- 2F2(g)+2H2O(l)=?
what is the mass of an empty 75 mm test tube?
What is the density of NH3 at 800torr and 25 Celsius?
how many chloride ions are in o.35 mol MgCl2?
___Fe(NO3)2 + Al___Al(NO) +__Fe
what is the oxidation number of Chlorine in KCIO4???
Highest ionization energy to lowest I be ci f
Highest ionization energy to lowest I be ci f
calculate the pH of a 0.100M NH4Cl solution.
Calculate the empirical formula of Tylenol: C, 63.56%; H, 6.00%; N, 9.27%; O, 21.17%