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Recent questions in Chemistry
How many carbon atoms are there in 1.00 mol of C2H6? a) 4.82 x 10^24 b) 3.01 x 10^23 c) 6.02 x 10^23 d) None of the above
BaronVonBraun
asked
Oct 14, 2024
by
BaronVonBraun
7.8k
points
Chemistry
high-school
1
answer
3
votes
70.7k
views
Which term means the lowest temperature at which fuel oil will flow as a liquid? O flow point O pour point O fire point O flash point
Ton Torres
asked
Oct 14, 2024
by
Ton Torres
8.4k
points
Chemistry
college
1
answer
5
votes
152k
views
which of the following pairs of elements are likely to form ionic compounds? check all that apply. which of the following pairs of elements are likely to form ionic compounds?check all that apply. chlorine
David Johnstone
asked
Oct 14, 2024
by
David Johnstone
8.2k
points
Chemistry
high-school
1
answer
1
vote
206k
views
Ethane at 25°C and 1.1 atm (abs) flowing at a rate of 100 mol/s is burned with 20% excess oxygen at 175 °C and 1.1 atm (abs). The combustion products (C₂H₆, O₂, N₂, CO, CO₂, H₂O), leave the furnace at
Zukanta
asked
Oct 14, 2024
by
Zukanta
8.0k
points
Chemistry
high-school
1
answer
1
vote
17.2k
views
Iodine-131 is a radioactive isotope. After 20.8 days, 41.1% of a sample 131I remains. What is the half life of 131I? Need a way to do it on scientific calculator, please.
Razican
asked
Oct 14, 2024
by
Razican
8.1k
points
Chemistry
college
1
answer
4
votes
123k
views
Phosphorus-33 is a radioisotope with a half-life of 15 days. If you start with 20 g of phosphorus-33: a. How many half-lives will have occurred after 45 days? b. How many grams will remain after 45 days?
Kimh
asked
Oct 14, 2024
by
Kimh
7.4k
points
Chemistry
high-school
1
answer
1
vote
163k
views
Oxygen isotope analysis is the measurement of two isotopes of oxygen (18O and 16O). The lighter isotope, 16O, ________.
Oleg Karasik
asked
Oct 14, 2024
by
Oleg Karasik
8.3k
points
Chemistry
high-school
1
answer
5
votes
20.9k
views
What are the six common nonsilicate mineral groups?
Dvoutt
asked
Oct 14, 2024
by
Dvoutt
8.5k
points
Chemistry
high-school
1
answer
2
votes
156k
views
17.27 draw structures for all constitutional isomers with the molecular formula c8h10 that contain an aromatic ring.
Ravnsgaard
asked
Oct 14, 2024
by
Ravnsgaard
8.5k
points
Chemistry
high-school
2
answers
5
votes
57.1k
views
What is the formula for photosynthesis and cellular ?
Slabgorb
asked
Oct 14, 2024
by
Slabgorb
8.9k
points
Chemistry
college
1
answer
5
votes
111k
views
What would make oppositely charged objects attract each other more? increasing the positive charge of the positively charged object and increasing the negative charge of the negatively charged object decreasing
Srowland
asked
Oct 14, 2024
by
Srowland
7.8k
points
Chemistry
high-school
1
answer
5
votes
106k
views
Explain the ionization of both protons from a diprotic acid such as H2CO3.
Dook
asked
Oct 14, 2024
by
Dook
8.8k
points
Chemistry
high-school
1
answer
5
votes
220k
views
Which of the following is true about ATP? A) It loses two phosphate groups. B) It gains two phosphate groups. C) It always has a fixed number of phosphate groups. D) It is not involved in cellular energy
Juri Glass
asked
Oct 14, 2024
by
Juri Glass
8.2k
points
Chemistry
high-school
1
answer
2
votes
118k
views
In the Bohr series of lines of the hydrogen spectrum, the third line from the red end corresponds to which one of the following inter-orbit jumps of the electron for Bohr orbits in an atom of hydrogen
Gpcz
asked
Oct 14, 2024
by
Gpcz
7.6k
points
Chemistry
high-school
1
answer
0
votes
83.9k
views
Find the pH of a solution 1.0 M in KCN. For HCN K₂=6.2×10-¹⁰.
Ioko
asked
Oct 14, 2024
by
Ioko
7.4k
points
Chemistry
high-school
1
answer
0
votes
148k
views
A reaction is represented by this equation: 2W(aq)⇌X(aq)+2Y(aq)Kc=5×10^−4 a) 2W ⇌ X b) Y ⇌ W c) 2W ⇌ Y + X d) X + Y ⇌ 2W
Antew
asked
Oct 14, 2024
by
Antew
9.0k
points
Chemistry
high-school
1
answer
3
votes
184k
views
If an automobile air bag has a volume of 11.8 L, what mass of NaN3 (in g) is required?
Helrich
asked
Oct 14, 2024
by
Helrich
8.8k
points
Chemistry
high-school
1
answer
2
votes
230k
views
a compound that contains only c and h and has a molecular ion with an m/z value of 86. Express your answer as a molecular formula. Enter the elements in the order: C, H.
KpTheConstructor
asked
Oct 14, 2024
by
KpTheConstructor
8.2k
points
Chemistry
high-school
1
answer
0
votes
190k
views
Kinetic energy in form of electrons
VishnuPrasad
asked
Oct 14, 2024
by
VishnuPrasad
7.5k
points
Chemistry
college
1
answer
0
votes
48.7k
views
Fe + 2AgCl(aq) FeCl2 (aq) + Ag How many grams of silver can theoretically be formed in this reaction?
Diadem
asked
Oct 14, 2024
by
Diadem
8.0k
points
Chemistry
high-school
1
answer
3
votes
65.4k
views
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