a student has been asked to prepare a sample of propyl ethanoate. Name three substances necessary for the lab preperation of propyl ethanoate.-n-propanol, ethanoic acid (also known as acetic acid) and
If two atoms are different isotopes of the same element, the two atoms have the same..
1. number of neutrons.
2. mass number and number of neutrons.
3. atomic number.
4. number of neutrons and atomic
gas meaning carbon dioxide.-Its not a measure of volume, but of length.
if you were reading it as a height of water column in a tube of known bore,
you could calculate a volume or maybe a pressure fr
Im leaning towards Alkalosis.. but if I am wrong please explain why
Thankyou-Its acidosis.See, dissolved ammonia is a proton acceptor, absorbing hydrogen ion from an aqueous environmento to become am
0.050 mL of 2.5 mM Tris-HCL from 1.0 M stock.
Can you help me figure this out please?-the dilution formula
C1V1 = C2V2
(1.0 M) (V1) = (0.0025 M) (0.050 ml)
V1 = 0.000125 ml
you need to use 0.125 mi
CH↓4 + 2 O↓2CO2 + 2+ ↓20-CH4 + 2 O2 → CO2 + 2 H2O
First, we must assign oxidation numbers to each and every atom on each side of the above equation:
Left side:
C = -4
H = +1
O = 0
Right side:
C = +4
H
4.97 x 10 ^-6? (4970000)?
Thats what I keep getting, but my online homework said that it was incorrect... Whats the answer?-I believe you have your sign wrong.You have 0.00497 meter, which is 4.97 mm.
400.0 mL of a 1.25 M buffer solution is buffered to a pH of 4.89. If its pKa is 5.15, what is the mass of the acid and conjugate base is used (answer in grams).
The molecular weight of the acid is 218
Post-1982 pennies are 97.5% zinc and 2.5% copper. The density of zinc is 7.13 g/ml and the density of copper is 8.92 g/ml. Calculate the accepted density of a post-1982 penny. Show work. Thanks!-Assum
A) Electrons in the energy level closest to the nucleus.
B) Electrons in the highest main energy level
C) The number of electrons required to complete the highest main energy level.
D) The total nu
Or do other chemicals in the water system such as chlorine and fluoride evaporate at around the same temperature?-The chlorine will be removed by boiling the water.The fluoride will not.Boiling wont r
Sr(OH)2*8H2O + 2HCl ---> SrCl2*8H20 + 2H2O?
whats the net ionic equation??-we might weigh out & dissolve Sr(OH)2*8H2O into solution
but , once in solution, we no longer keep the waters of crystalizat
in france grapes are 1.40 euros per kilogram. what is the cost of grapes in dollars per pound if the exchange rate is 1.30 per per euro?-1.4 x 1.3 = $1.82 / kg
1.82/2.204 = $0.826 / lb
