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Recent questions in Chemistry
What is the ΔG' for the inward transport of sodium ions? 1) +5.233 kcal/mol; an endergonic reaction 2) +5.233 kcal/mol; an exergonic reaction 3) -5.233 kcal/mol; an endergonic reaction 4) -5.233 kcal/mol;
Oklas
asked
Oct 10, 2024
by
Oklas
7.9k
points
Chemistry
high-school
1
answer
4
votes
149k
views
According to the law of conservation of matter, matter cannot be _______, only rearranged. Ochemically changed created or destroyed physically changed
Fariya Rahmat
asked
Oct 10, 2024
by
Fariya Rahmat
8.3k
points
Chemistry
college
1
answer
0
votes
131k
views
The sale of CFC and HCFC refrigerants is? A) Banned B) Limited by law to equipment owners C) Allowed only if there is proof of need D) Restricted to technicians who are EPA certified in refrigerant recovery
AdorableVB
asked
Oct 10, 2024
by
AdorableVB
8.2k
points
Chemistry
high-school
1
answer
2
votes
207k
views
A crazy person breaks into the school and starts randomly mixing chemical solutions together. They combine a 0.7 M solution with a volume of 800 mL, a 1 M solution with a volume of 300 mL, and a 1.9 M
Velkoon
asked
Oct 10, 2024
by
Velkoon
7.4k
points
Chemistry
college
1
answer
4
votes
54.2k
views
Which of the responses represents the missing particle in the following reaction? ^12 v6 C + ^1 v1 H --> ^13 v7 N + ? A. Alpha B. Beta C. Gamma D. Neutron
Tbogatchev
asked
Oct 10, 2024
by
Tbogatchev
7.4k
points
Chemistry
high-school
1
answer
5
votes
218k
views
The cubic unit cell of rhenium oxide (ReO3) has Re atoms at all eight corners and O atoms on each of the 12 edges. The atoms touch along the edges. The radii are 137 pm for rhenium and 73 pm for oxygen.
Khurram Aziz
asked
Oct 10, 2024
by
Khurram Aziz
7.5k
points
Chemistry
college
1
answer
4
votes
220k
views
Calculating Quantity Dispensed Ex. 1) Atorvastatin 10mg 1T PO QD Qty #30
Ramesh Kumar
asked
Oct 10, 2024
by
Ramesh Kumar
8.3k
points
Chemistry
high-school
1
answer
5
votes
182k
views
Points of maximum compression in a wave. A) Troughs B) Nodes C) Crests D) Antinodes
Sterling Duchess
asked
Oct 10, 2024
by
Sterling Duchess
9.2k
points
Chemistry
high-school
1
answer
2
votes
83.0k
views
Chlorine and blank combined to make chloramines. A) Ammonia B) Sodium hydroxide C) Sulfuric acid D) Hydrogen peroxide
Shadow Wizard
asked
Oct 10, 2024
by
Shadow Wizard
8.1k
points
Chemistry
high-school
1
answer
3
votes
187k
views
What is the concentration of HNO3 if 4.60×10−2 mol are present in 895 mL of the solution? Express your answer with the appropriate units.
Gileneusz
asked
Oct 10, 2024
by
Gileneusz
8.2k
points
Chemistry
high-school
1
answer
0
votes
109k
views
Describe the following: cA: mA: mP: mT:
ReenignE
asked
Oct 10, 2024
by
ReenignE
7.5k
points
Chemistry
high-school
1
answer
5
votes
188k
views
2Al(s) + 3Cu(NO3) 2(ag) -> 3Cu(s) + 2Al(NO3)з(aq) why is this a redox reaction
Plutoz
asked
Oct 10, 2024
by
Plutoz
7.8k
points
Chemistry
high-school
1
answer
4
votes
84.6k
views
A steel bar and a copper bar have the same length of 1.500 m at -12.00 ∘C. What is the difference in the lengths of the two bars at 41.0 ∘C ?
Jimtronic
asked
Oct 10, 2024
by
Jimtronic
7.8k
points
Chemistry
college
1
answer
3
votes
146k
views
Who developed the philosophical idea of the atom
Alikonda
asked
Oct 10, 2024
by
Alikonda
7.4k
points
Chemistry
college
1
answer
3
votes
124k
views
A student places a block of hot metal into a coffee cup calorimeter containing 157.5 g of water. The water temperature rises from 21.7 °C to 34.6 °C. How much heat (in calories) did the water absorb?
Nathan Keller
asked
Oct 10, 2024
by
Nathan Keller
8.0k
points
Chemistry
high-school
1
answer
1
vote
163k
views
A 1.15 g sample of an unknown gas at 63 ∘C and 1.10 atm is stored in a 2.75 L flask. What is the molar mass of the gas? What is the density of the gas?
Rolf Huisman
asked
Oct 10, 2024
by
Rolf Huisman
7.8k
points
Chemistry
high-school
2
answers
5
votes
40.6k
views
What is Eº for the following reaction? 2 Al3+(aq) + 3 Zn(s) -> 2 Al(s) + 3 Zn2+(aq) Half-Reaction Eº, V Al3+(aq) + 3 e- -> Al(s) -1.66 Zn2+(aq) + 2 e- -> Zn(s) -0.76
Aryan
asked
Oct 10, 2024
by
Aryan
8.5k
points
Chemistry
high-school
1
answer
0
votes
138k
views
Consider the reaction, 2A + B → Products. When the concentration of B alone was doubled, the half-life did not change. When the concentration of A alone was doubled, the rate increased by two times. The
Vojtech Vrbka
asked
Oct 10, 2024
by
Vojtech Vrbka
8.1k
points
Chemistry
high-school
1
answer
0
votes
156k
views
What stabilizes the transition star oxyanion that forms during chymotrypsin catalysis?
Lahav
asked
Oct 10, 2024
by
Lahav
7.8k
points
Chemistry
high-school
1
answer
5
votes
96.8k
views
nitrogen and hydrogen gas react to form ammonia gas. suppose you have 13.0 mol of n2 and 9.0 mol of h2 in a reactor. suppose as much of the n2 reacts. how much will be left
Flavien Lambert
asked
Oct 10, 2024
by
Flavien Lambert
7.0k
points
Chemistry
high-school
1
answer
5
votes
194k
views
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