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Chemistry
Chemistry
College
Sulfurous acid ( H2SO3) is a diprotic acid with a1=1.39102 and a2=6.73108. Determine the pH of a 0.189M sulfurous acid ( H2SO3 ) solution.
Chemistry
High School
if a person typically consumes large amounts of processed foods and certain wines, which category of chemical hazard does he or she ingest?
Chemistry
High School
ibuprofen has the following mass percent composition: c 75.69 % , h 8.80 % , o 15.51 % . what is the empirical formula of ibuprofen?
Chemistry
High School
nAt T = 1200 C the reaction: P.(g) + 2P2(8) has an equilibrium constant R, 0.612. Suppose the initial partial pressure of Pris 5.00 atm and that of P, is 2.00 atm. Calculate the re- action quotient, Q. and state whether the reaction proceeds to reactants or products.
Chemistry
High School
what is an appropriate stepwise synrthesis for the folowing synthesis that uses ethyl 3-methylbutanoate and using any other eagensts necessary
Chemistry
High School
(q028) sulfuric acid speleogenesis group of answer choices happens most often above the water table. occurs where limestone overlies strata rich in hydrocarbons. is responsible for the vast majority (greater than 80%) of all caves. occurs when microbes convert hydrogen sulfide gas into gypsum.\
Chemistry
High School
A respiratory pigment that requires a relatively low O2 partial pressure for loading has ______ affinity for O2. a) a low b) a high c) no d) a variable.
Chemistry
High School
the equilibrium potential for chloride is about -65 mv. if a neurons membrane potential is stuck at -60 mv and chloride channels open, chloride would travel
Chemistry
High School
in the carbon reaction ( light independent reaction) carbon dioxide molecules are reduced by the addition of electrons carried from the light reaction by __________.
Chemistry
College
What season are we in now? What is the position of the earth according to the sun?
Chemistry
High School
Balance the following redox reaction in acidic medium:Fe2++ O2 H2O + Fe3+
Chemistry
High School
explain why the amide nitrogen is much less reactive as a base towards aqueous acids than the alkylamine nitrogen. how does this experiment illustrate this?
Chemistry
High School
S is positive for the reaction __________.A. 2H2 (g) + O2 (g) 2H2O (g)B. CO2 (g) CO2 (s)C. 2NO2 (g) N2O4 (g)D. BaF2 (s) Ba2+ (aq) + 2F- (aq)E. 2Hg (l) + O2 (g) 2HgO (s)
Chemistry
High School
Maltose has a (14) linkage between glucose and ________. xylulose mannose galactose glucose
Chemistry
High School
A liquid typically boils at 200 degrees C. If an insoluble salt is added to the liquid, its new boiling point will be:a) greater than 200 degrees Cb) less than 200 degrees Cc) 200 degrees Cd) not enough information is provided to answer the question
Chemistry
High School
How much 8.0 M stock solution is required to prepare 100.0 mL of 2.5 Msolution?
Chemistry
College
In which one of the following is the oxidation state of nitrogen given incorrectly? A. H2N20 2(+ 1) B. N2H4(-2) C. NaN3(-1) D. HN02(+3)
Chemistry
High School
Fossil fuels are fuels such as coal, oil, and natural gas. They are formed over millions of years from the remains of ancient plants and animals. What is the relationship between fossil fuels and energy? A. Fossil fuels are a form of chemical energy. B. Fossil fuels are a form of nuclear energy. C. Fossil fuels are a form of mechanical energy. D. Fossil fuels are a form of geothermal energy
Chemistry
High School
HELP PLSSSS What's the molar mass of alumina, AlO? The atomic weight of aluminum is 26.98 and the atomic weight of oxygen is 16.00.A. 101.96 g/molB. 48.00 g/molC. 149.96 g/molD. 42.98 g/mol
Chemistry
High School
under what conditions is it best to use the standard additions method over the external standards method?
Chemistry
High School
how would the abundance of carbon in space affect the chances of a new planet having enough carbon to create organic matter in any carbon-based extraterrestrial life?
Chemistry
High School
how many atoms are in 4(NH3)2NO2?
Chemistry
High School
Waves that use matter to transfer energy are called - wavesplease help me out
Chemistry
High School
What volume, in dL, of a 0.421 M LiPO solution contains 86.4 g of LiPO?Answer ASAP Please it is due TODAY!!!!!!!
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