Chemie
Chemische Reaktionen, Stöchiometrie, Molekülstrukturen und Elementeigenschaften.
-
\synthesis gas\ is a mixture of carbon monoxide and water vapor. at hig…
\(0.78\ atm\)
-
nitrogen dioxide is one of the many oxides of nitrogen (often collectiv…
\(2.4\space mol\)
-
while ethanol (ch₃ch₂oh) is produced naturally by fermentation, e.g. in…
\(1.5\ atm\)
-
at - 15.0 ^ { circ } mathrm { c } the pressure equilibrium constant k _…
No. Yes, and \(K_p\) will be smaller.
-
nitrogen forms a surprising number of compounds with oxygen. a number o…
\(3.2\)
-
nitrogen forms a surprising number of compounds with oxygen. a number o…
\(3.2\)
-
ethylene (ch₂ch₂) is the starting point for a wide array of industrial …
\(3.2\%\)
-
a chemist is studying the following equilibrium, which has the given eq…
yes, \(0.02\) atm
-
a chemist is studying the following equilibrium, which has the given eq…
yes, \(6\times10^{-2}\) atm
-
a chemist is studying the following equilibirum, which has the given eq…
yes, \(0.03\ atm\)
-
a chemist is studying the following equilibrium, which has the given eq…
yes, \(2\) atm
-
a chemist is studying the following equilibrium, which has the given eq…
yes, \(0.06\) atm
-
ammonia will decompose into nitrogen and hydrogen at high temperature. …
\(61\)
-
sulfur dioxide and oxygen react to form sulfur trioxide during one of t…
\(19\)
-
steam reforming of methane (ch₄) produces \synthesis gas,\ a mixture of…
\(12\)
-
titanium(iv) chloride decomposes to form titanium and chlorine, like th…
\(1.4\times 10^{-3}\)
-
nitric acid and nitrogen monoxide react to form nitrogen dioxide and wa…
\(0.32\)
-
calcium carbonate decomposes to form calcium oxide and carbon dioxide, …
\(K_c=0.034\) (rounded to 2 significant digits)
-
carbon dioxide and water react to form methanol and oxygen, like this: …
\(1.6\times 10^{5}\)
-
consider the following chemical equilibrium: h₂(g)+f₂(g)⇌2hf(g) now wri…
\(K_p = K_c\)
-
consider the following chemical equilibrium: n₂(g) + 3h₂(g) ⇌ 2nh₃(g) n…
\(K_c = K_p(RT)^{2}\)
-
consider the following chemical equilibrium: 4nh₃(g)+3o₂(g)⇌2n₂(g)+6h₂o…
\(K_{p}=K_{c}(RT)\)
-
at a certain temperature, the equilibrium constant ( k ) for the follow…
- For the first question: There will be very little \(NO\). - For \(2NO(g) ightleftharpoons N_{2}(g)+O_{2}(g)\), \(K = 1.1\times 10^{2}\) - For \(3N_{2}(g)+3O_{2}(g) ightleftharpo…
-
at a certain temperature, the equilibrium constant ( k ) for the follow…
- First part: There will be very little \(CO\) and \(H_2O\) - Second part: \(K = 1.3\times 10^{-13}\) - Third part: \(K = 5.9\times 10^{25}\)
-
at a certain temperature, the equilibrium constant ( k ) for the follow…
- There will be very little \(BrOCl\) and \(BrCl\). - \(K = 1.3\) - \(K = 0.56\)
-
ammonia and oxygen react to form nitrogen and water, like this: 4nh3(g)…
1. Zero. 2. Greater than zero, and greater than the rate of the forward reaction. 3. Greater than zero, and equal to the rate of the forward reaction. 4. Some, but less than 154. …
-
nitrogen and hydrogen react to form ammonia, like this: n₂(g)+3h₂(g)→2n…
- What is the rate of the forward reaction before any \(N_2\) or \(H_2\) has been added to the flask? → Zero. - What is the rate of the forward reaction just after the \(N_2\) and…
-
acetic acid and water react to form hydronium cation and acetate anion,…
1. Greater than zero, and equal to the rate of the forward reaction. 2. Greater than zero, but less than the rate of the forward reaction. 3. Greater than zero, and equal to the r…
-
a tiny sample of an aqueous solution of two substances r and p is sketc…
number of \(R\) molecules: \(6\) number of \(P\) molecules: \(4\)
-
a tiny sample of an aqueous solution of two substances r and p is sketc…
number of \(R\) molecules: \(4\) number of \(P\) molecules: \(6\)
-
the reduction of iron(iii) oxide to iron during steel - making can be s…
\(K = K_{1}^{3}K_{2}^{2}\)
-
hydrogen is manufactured on an industrial scale by this sequence of rea…
\(K = K_1\times K_2\)
-
there are two steps in the usual industrial preparation of acrylic acid…
\( K = K_{1}^{6}K_{2} \)
-
methane and water react to form hydrogen and carbon monoxide, like this…
| perturbation | change in composition | shift in equilibrium | |--|--|--| | The temperature is raised | decrease | to the right | | The temperature is lowered | decrease | to the…
-
nitrogen and oxygen react to form nitrogen monoxide, like this: n₂(g)+o…
- When the temperature is lowered: The pressure of \(O_{2}\) will increase, and the equilibrium shifts to the left. - When the temperature is raised: The pressure of \(NO\) will i…
-
sulfur dioxide and oxygen react to form sulfur trioxide, like this: 2so…
When the temperature is lowered: - The pressure of \(SO_{2}\) will decrease. - The equilibrium shifts to the right. When the temperature is raised: - The pressure of \(SO_{3}\) wi…
-
write the pressure equilibrium constant expression for this reaction. h…
\(K_p=\frac{P_{H_2}\times P_{CO}}{P_{H_2O}}\)
-
write the pressure equilibrium constant expression for this reaction. 2…
\(K_p = P_{N_2}\)
-
write the pressure equilibrium constant expression for this reaction. 2…
\(K_p=\frac{P_{CO_2}^2\times P_{H_2O}^4}{P_{O_2}^3}\)
-
nitrogen and hydrogen react to form ammonia, like this: n₂(g)+3h₂(g)→2n…
|perturbation|change in composition|shift in equilibrium| |---|---|---| |Some \(NH_3\) is added|The pressure of \(N_2\) will increase; The pressure of \(H_2\) will increase|to the…
-
carbon disulfide and oxygen react to form carbon dioxide and sulfur dio…
| perturbation | change in composition | shift in equilibrium | |---|---|---| | Some \(SO_2\) is removed | The pressure of \(CS_2\) will decrease; The pressure of \(O_2\) will dec…
-
methane and hydrogen sulfide react to form carbon disulfide and hydroge…
- For "Some \(H_2S\) is added": - The pressure of \(CH_4\) will decrease. - The pressure of \(CS_2\) will increase. - Shift in equilibrium: to the right. - For "Some \(H_2\) is re…
-
nitrogen and hydrogen react to form ammonia, like this: n₂(g)+3h₂(g)→2n…
- First question: Some, but less than \(280\). mmol. - Second question: Some, but less than \(108\). mmol.
-
hydrogen chloride and oxygen react to form water and chlorine, like thi…
1. Some, but less than \(50.0\space mmol\) 2. Some, but less than \(240\space mmol\)
-
ethylene and chlorine react to form ethylene dichloride, like this: ch₂…
For the first question: Some, but less than \(110\). mmol. For the second question: Some, but less than \(180\). mmol.
-
write the concentration equilibrium constant expression for this reacti…
\(K_c=\frac{[\text{Cr}^{3+}]^2}{[\text{Cr}_2\text{O}_7^{2 -}][\text{I}^-]^6[\text{H}^+]^{14}}\)
-
write the concentration equilibrium constant expression for this reacti…
\(K_c=\frac{[Ag^{+}]^{2}}{[Cu^{2 +}]}\)
-
write the concentration equilibrium constant expression for this reacti…
\(K_c=\frac{[\ce{Ag^{+}}]^2}{[\ce{Cu^{2+}}]}\)
-
write the concentration equilibrium constant expression for this reacti…
\(K_c=\frac{[F^-][H_3O^+]}{[HF]}\)
-
suppose a 250. ml flask is filled with 1.2 mol of h₂ and 0.70 mol of hi…
| | \(H_2\) | \(I_2\) | \(HI\) | |---|---|---|---| | Initial | \(4.8\) | \(0\) | \(2.8\) | | Change | \(x\) | \(x\) | \(-2x\) | | Equilibrium | \(4.8 + x\) | \(x\) | \(2.8-2x\) |
-
suppose a 500. ml flask is filled with 1.6 mol of n₂ and 0.60 mol of nh…
| | \(N_2\) | \(H_2\) | \(NH_3\) | |---|---|---|---| | Initial | \(3.2\) | \(0\) | \(1.2\) | | Change | \(x\) | \(3x\) | \(-2x\) | | Equilibrium | \(3.2 + x\) | \(3x\) | \(1.2-2x\…
-
suppose a 500. ml flask is filled with 0.90 mol of ch₄, 0.30 mol of h₂o…
| | \(CH_{4}\) | \(H_{2}O\) | \(CO\) | \(H_{2}\) | |---|---|---|---|---| | initial | \(1.8\) | \(0.6\) | \(1.0\) | \(0\) | | change | \(-x\) | \(-x\) | \(x\) | \(+3x\) | | equilib…
-
suppose a 250. ml flask is filled with 1.0 mol of co, 2.0 mol of co₂ an…
| | \(CO\) | \(H_{2}O\) | \(CO_{2}\) | \(H_{2}\) | |---|---|---|---|---| | Initial | \(4.0\) | \(0\) | \(8.0\) | \(5.2\) | | Change | \(-x\) | \(+x\) | \(+x\) | \(+x\) | | Equilib…
-
nitrogen and hydrogen react to form ammonia, like this: n₂(g)+3h₂(g)→2n…
\(K_p=\frac{P_{NH_3}^2}{P_{N_2}\times P_{H_2}^3}\)
-
hydrogen iodide decomposes to form hydrogen and iodine, like this: 2hi(…
\(K_p=\frac{P_{H_2}\times P_{I_2}}{P_{HI}^2}\)
-
nitrogen monoxide and water react to form ammonia and oxygen, like this…
\(K_p=\frac{P_{NH_3}^4\times P_{O_2}^5}{P_{NO}^4\times P_{H_2O}^6}\)
-
bromine and water react to form hydrogen bromide and oxygen, like this:…
\(1.3\)
-
hydrogen and lodine react to form hydrogen iodide, like this: mathrm{h}…
\(1.8\)
-
ammonia and oxygen react to form nitrogen monoxide and water, like this…
\(0.23\)
-
nitrogen and water react to form nitrogen monoxide and hydrogen, like t…
\(5.2\)
-
sulfur trioxide decomposes to form sulfur dioxide and oxygen, like this…
\(44\)
-
write the equilibrium constant expression for this reaction: 2ch₃coo⁻(a…
\(K=\frac{[\mathrm{C_6H_{10}O_4}][\mathrm{OH^-}]^2}{[\mathrm{CH_3COO^-}]^2[\mathrm{C_2H_6O_2}]}\)
-
write the equilibrium constant expression for this reaction: 3h^{+}(aq)…
\(K=\frac{[H_{3}PO_{4}]}{[H^{+}]^{3}[PO_{4}^{3 - }]}\)
-
the columns in the periodic table are called ____________ and tell how …
Groups and outer shells
-
looking at the periodic table, sodium has _ outer shells and _ electron…
3, 1
-
covalent bonds occur when there is a of electrons. sharing transferring…
Sharing
-
imagine you are comparing two video interpretations of a poem. which as…
B. the use of background music and sound effects to create mood, the actors' delivery and facial expressions, and how visual elements highlight the poem's themes
-
question 21 (mandatory) (2 points) listen the most serious complication…
Pulmonary embolism
-
isomers: may occur in several different forms. may have vastly differen…
all of the above.
-
hydrocarbons: form the basis for most macromolecules. increase the h+ i…
form the basis for most macromolecules.
-
which of the following is associated with the development of a high out…
Anemia
-
question 32 (2 points) listen in 1735, swedish botanist carolus linnaeu…
d) qualities of behavior or temperament that were innate and could not be altered.
-
aluminum replacing a less active metal in a compound is classified as a…
single displacement
-
list the coefficients for the reaction: $c_{10}h_{8}+o_{2}$ yields $co_…
1, 12, 10, 4
-
when h₂so₄ is mixed with naoh, an acid - base neutralization reaction p…
\(Na_2SO_4\)
-
if two liquids are combined and a precipitate forms, it is likely that …
True
-
if a clear liquid is mixed with a green liquid and no noticeable change…
the result was a green liquid and no observable changes occurred
-
a change in color can indicate a chemical reaction. true false
True
-
an activity series consists of _____ ordered by _____. compounds; activ…
C. elements; activity
-
question 6 question 6 of 15 ______ is a combination reaction. 2nacl yie…
\(2Na + Cl_{2}\text{ yields }2NaCl\) (the third option)
-
choose the correct coefficients for the following reaction: _____ h_{2}…
\(3;1\)
-
a _____ is a change in the form or state of a substance. chemical chang…
B. physical change
-
is not necessarily the result of a chemical reaction. a hard - boiled e…
C. Steam
-
question 2 question 2 of 15 during a chemical reaction, ____ will yield…
reactants; products
-
during a chemical reaction, atoms of chemicals ______. interact with on…
both interact with one another and rearrange to form new substances
-
correctly match the type of memory bias with its description. confirmat…
- Confirmation bias: Tendency to verify and confirm our existing beliefs. - Misinformation effect: Errors in memory that occur when new but incorrect information influences existi…
-
in which of the following sets are the charges given correctly for all …
\(K^{+}, Sr^{2+}, O^{2-}\)
-
each period in the periodic table corresponds to a(n) orbital energy su…
principal energy level
-
how does atomic radius change from left to right across a period in the…
It tends to decrease.
-
horizontal row in the periodic table vertical column in the periodic ta…
1. period 2. group 3. periodic law 4. metal 5. transition metal 6. atomic radius 7. atomic mass 8. electrons 9. electronegativity 10. ionization energy
-
what is the charge of a cation? a negative charge the charge depends on…
C. a positive charge
-
what is the energy required to remove an electron from an atom in the g…
Ionization energy.
-
the modern periodic table is arranged in order of increasing atomic ___…
C. number
-
in which of the following sets is the symbol of the element, the number…
In, 49 protons, 49 electrons.
-
what is the element with the highest electronegativity value? cesium ca…
fluorine
-
which of the following groupings contains only representative elements?…
\(Al,Mg,Li\)
-
which of the following elements has the smallest atomic radius? chlorin…
chlorine
-
what is another name for the transition metals? noble gases group b ele…
Group B elements
-
atomic size generally decreases as you move from left to right across a…
decreases as you move from left to right across a period.
-
which of the following elements has the lowest electronegativity? ○ bro…
lithium