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Recent questions in Chemistry
on the basis of this experiment how would you proceed to determine the percentage of copper in a penny
Kevin McTigue
asked
Oct 1, 2024
by
Kevin McTigue
7.9k
points
Chemistry
high-school
1
answer
3
votes
51.7k
views
Why not combine bolus fluids with dextrose?
Gaston Sanchez
asked
Oct 1, 2024
by
Gaston Sanchez
8.5k
points
Chemistry
high-school
1
answer
2
votes
220k
views
Gloves should be removed A. Before Lab coat B. After Mask C. After lab coat D. When labeling tubes
Tobloef
asked
Oct 1, 2024
by
Tobloef
8.1k
points
Chemistry
high-school
1
answer
1
vote
62.2k
views
When aqueous solutions of FeCₗ3 and (NH₄)₂S are mixed, a solid precipitate forms. What is the correct formula for the precipitate?
Fitzchak Yitzchaki
asked
Oct 1, 2024
by
Fitzchak Yitzchaki
7.5k
points
Chemistry
high-school
1
answer
0
votes
136k
views
which statements about titration curves are correct? select all that apply: the ph at the equivalence point of the titration of a strong acid with a strong base is 7.00. the ph at the equivalence point
AdrieanKhisbe
asked
Oct 1, 2024
by
AdrieanKhisbe
7.6k
points
Chemistry
high-school
1
answer
2
votes
48.3k
views
A sample of ethane has the same mass as 10.0 million molecules of methane. How many C₂H₆ molecules does the sample contain?
Mateor
asked
Oct 1, 2024
by
Mateor
8.2k
points
Chemistry
high-school
1
answer
5
votes
220k
views
*for a person weighing 150 pds, how many L of H2O are contained in all of the body's compartments* a. 70 b. 50 c. 42 d. 14
Chuckrector
asked
Oct 1, 2024
by
Chuckrector
7.5k
points
Chemistry
high-school
2
answers
3
votes
14.6k
views
Solutions A and B are separated by a membrane that is permeable to Ca₂⁺ and impermeable to Cl⁻. Solution A contains 10mM CaCl₂, and solution B contains 1 mM CaCl₂. Assuming that 2.3 RT/F = 60 mV, Ca₂⁺
Pavan Kemparaju
asked
Oct 1, 2024
by
Pavan Kemparaju
8.3k
points
Chemistry
high-school
1
answer
4
votes
89.0k
views
Consider the reaction 6CO2(g) + 6H2O(I)-->C6H12O6 + 602(g) Using standard thermodynamic data at 298K, calculate the entropy change for the surroundings when 2.36 moles of CO2(g) react at standard conditions.
Shivam Pokhriyal
asked
Oct 1, 2024
by
Shivam Pokhriyal
8.0k
points
Chemistry
high-school
1
answer
1
vote
452
views
9) a) When the temperature stays the same, the volume of a gas varies inversely to the pressure of the gas. Write an equation to express this variation, using k for the constant of variation. b) When a
Syed Saad
asked
Oct 1, 2024
by
Syed Saad
8.1k
points
Chemistry
high-school
1
answer
2
votes
116k
views
A molecule can be depicted in multiple projections and orientations. For each depiction to be equivalent, all atoms within the molecule must be in: A) The same plane. B) A linear arrangement. C) A tetrahedral
Xephryous
asked
Oct 1, 2024
by
Xephryous
8.1k
points
Chemistry
high-school
1
answer
1
vote
16.3k
views
Which of the following is FALSE regarding potassium secretion? 1) Hyperkalemia will increase K⁺ secretion 2) Increased activity of the Na/K pump will increase K⁺ secretion 3) It is paired with sodium reabsorption
FocusedWolf
asked
Oct 1, 2024
by
FocusedWolf
8.2k
points
Chemistry
high-school
1
answer
0
votes
151k
views
Noble gas notations help you write the electron configuration of every element. Benefits are: a) Simplifies writing electron configurations b) Saves time c) Provides a clear pattern d) All of the above
Mkj
asked
Oct 1, 2024
by
Mkj
7.9k
points
Chemistry
high-school
1
answer
5
votes
153k
views
A 3.00 g sample of a gaseous compound was found to contain 2.560g of carbon and 0.440g of hydrogen. What is the simplest formula for the compound? a. CH₂ b. C₂H₅ c. C₃H₇ d. C₄H₁₀
Magan
asked
Oct 1, 2024
by
Magan
7.7k
points
Chemistry
high-school
1
answer
0
votes
50.4k
views
the cs-131 nuclide has a half-life of 30 years. after 120 years, 6.0 g remain. what is the original mass of the cs-131 sample in grams?
TJ Thind
asked
Oct 1, 2024
by
TJ Thind
7.0k
points
Chemistry
high-school
1
answer
3
votes
90.0k
views
If we lower the number of air particles surrounding the barely inflated balloon as we activate the vacuum pump, Then the particles of air in the balloon will:
Srikanth Kolli
asked
Oct 1, 2024
by
Srikanth Kolli
7.9k
points
Chemistry
college
2
answers
1
vote
49.0k
views
By studying fossils, scientists have learned that A. both animals and plants have changed over time. B. animals have changed over time, but plants have not. C. plants have changed over time, but animals
Jjazzboss
asked
Oct 1, 2024
by
Jjazzboss
9.0k
points
Chemistry
college
1
answer
3
votes
216k
views
2) what mass of oxygen is needed to react with 184 g of sodium? 4na + o_{2} -> 2n*a_{2}*o
Andrei Shikalev
asked
Oct 1, 2024
by
Andrei Shikalev
8.4k
points
Chemistry
high-school
1
answer
3
votes
147k
views
Hartmann's is a colloid solution. a) True b) False
Robert Mutke
asked
Oct 1, 2024
by
Robert Mutke
8.8k
points
Chemistry
high-school
1
answer
3
votes
35.3k
views
Antifreeze containing ethylene glycol is also needed in automobiles in extremely hot climates. Using what you know about other colligative properties, explain why this is so
McCroskey
asked
Oct 1, 2024
by
McCroskey
8.7k
points
Chemistry
high-school
1
answer
4
votes
186k
views
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