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Chemistry
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Recent activity
zoya
wrote a comment in
Organic Chemistry
My organic chemistry textbook says that, in the glucose molecule, C-1 is behind the plane of the paper and the hydroxyl group on C-5 is in ...
"this helped A LOT"
34 seconds ago
·
· in
Introduction to Fisher Projections
,
Organic Chemistry
zoya
wrote a comment in
Organic Chemistry
My organic chemistry textbook says that, in the glucose molecule, C-1 is behind the plane of the paper and the hydroxyl group on C-5 is in ...
"thanks"
A minute ago
·
· in
Introduction to Fisher Projections
,
Organic Chemistry
zoya
wrote a comment in
Organic Chemistry
My organic chemistry textbook says that, in the glucose molecule, C-1 is behind the plane of the paper and the hydroxyl group on C-5 is in ...
"thanks"
A minute ago
·
· in
Introduction to Fisher Projections
,
Organic Chemistry
zoya
wrote a comment in
Organic Chemistry
My organic chemistry textbook says that, in the glucose molecule, C-1 is behind the plane of the paper and the hydroxyl group on C-5 is in ...
"great explanation.thanks"
A minute ago
·
· in
Introduction to Fisher Projections
,
Organic Chemistry
zoya
wrote a comment in
Organic Chemistry
My organic chemistry textbook says that, in the glucose molecule, C-1 is behind the plane of the paper and the hydroxyl group on C-5 is in ...
"thanks"
2 minutes ago
·
· in
Introduction to Fisher Projections
,
Organic Chemistry
zoya
wrote a comment in
Organic Chemistry
My organic chemistry textbook says that, in the glucose molecule, C-1 is behind the plane of the paper and the hydroxyl group on C-5 is in ...
"thanks"
4 minutes ago
·
· in
Introduction to Fisher Projections
,
Organic Chemistry
Someone from Hamilton, Canada asked a question in
Precalculus
How do logarithmic functions work?
Answer question
2 hours ago
·
· in
Logarithm-- Inverse of an Exponential Function
,
Precalculus
Someone from Katikati, New Zealand asked a question in
Precalculus
How do I use the fundamental theorem of algebra to look for complex roots?
Answer question
2 hours ago
·
· in
Fundamental Theorem of Algebra
,
Precalculus
Psykolord1989 .
wrote an answer to a
Precalculus
question
How to find an equation of exponential decay?
An equation of exponential decay typically takes the form #A(t) = A(0)e^(kt)# where #k<0#, though sometimes these will be written as ...
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3 hours ago
·
· in
Exponential Growth and Decay
,
Precalculus
Michael
wrote an answer to a
Chemistry
question
How much heat is evolved when 98.6 g oxygen is burned according to this equation? C6H12O6 (s) + 6 O2 (g)- 6 CO2 (g) + 6 H2O(l) delta H = ...
1440 kJ of heat is evolved. #C_6H_(12)O_(6)(s)+6O_(2)(g)rarr6CO_(2)(g)+6H_2O_((l))# #DeltaH=-2806 kJ.mol^(-1)# I will assume the ...
(more)
3 hours ago
·
· in
Spontaneous and Non-Spontaneous Processes
,
Chemistry
Psykolord1989 .
wrote a comment in
Precalculus
What happens when something grows exponentially?
"I am not at all certain how satisfactory or helpful this answer will be, though I do believe it is correct. Anyone who wishes to edit and ..."
3 hours ago
·
· in
Exponential Growth and Decay
,
Precalculus
Psykolord1989 .
wrote an answer to a
Precalculus
question
What happens when something grows exponentially?
In general: For an exponential function whose exponent tends to #+- oo# as #x->oo#, the function tends to #oo# or 0 respectively as ...
(more)
3 hours ago
·
· in
Exponential Growth and Decay
,
Precalculus
AJ
wrote an answer to a
Trigonometry
question
How do you shift and graph #y=-3+sinx#?
The period of #sin# is #2pi#. The #-3# is applied to the result of #sin(x)# which affects the #y# value. All of the points will be ...
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3 hours ago
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· in
Translating Sine and Cosine Functions
,
Trigonometry
T. Michael B.
wrote an answer to a
Precalculus
question
What is the domain of #cot x#?
The [domain](http://socratic.org/precalculus/functions-defined-and-notation/domain) of this function is the set of all real numbers for ...
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4 hours ago
·
· in
Graphing Trigonometric Functions with Domain and Range
,
Precalculus
Ernest Z.
wrote an answer to a
Organic Chemistry
question
What alkene would you start with if you wanted to synthesize ethylcyclopentane?
You could prepare ethylcyclopentane from any of five different alkenes. Here are their ...
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4 hours ago
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· in
Hydrogenation
,
Organic Chemistry
Someone from Seattle, United States asked a question in
Organic Chemistry
How can I calculate Ka of #NH_4^+#?
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4 hours ago
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· in
pH, pKa, Ka, pKb, Kb
,
Organic Chemistry
Someone from United States asked a question in
Calculus
How do you draw the slope field of the differential equation #dy/dx=1/2(4-y)(y-2)^(4/3)# ?
Answer question
4 hours ago
·
· in
Slope Fields
,
Calculus
Ernest Z.
wrote an answer to a
Organic Chemistry
question
How many alkenes could you treat with #H_2#, Pd/C in order to prepare methylcyclopentane?
You could prepare methylcyclopentane by treating any of four different alkenes with H₂ and Pd/C. Here are their ...
(more)
4 hours ago
·
· in
Hydrogenation
,
Organic Chemistry
Ed Z.
wrote a comment in
Calculus
How can calculus be used in business?
"It was getting a little long but I did not know how to shorten it without giving up clarity."
4 hours ago
·
· in
What is Calculus?
,
Calculus
Ed Z.
wrote an answer to a
Calculus
question
How can calculus be used in business?
One way that calculus can be used in business is marginal analysis. Suppose the price-demand equation and the cost function for the ...
(more)
4 hours ago
·
· in
What is Calculus?
,
Calculus
Someone from United States asked a question in
Organic Chemistry
What are the rules to assign suffixes or prefixes to functional groups?
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5 hours ago
·
· in
Memorization Tips and Tricks
,
Organic Chemistry
Ernest Z.
wrote an answer to a
Organic Chemistry
question
The amino acid (R)-alanine is found in insect larvae. What is the Fischer projection of this amino acid?
(*R*)-alanine is the enantiomer of the more common L- or (*S*)-alanine. Their structures are ...
(more)
5 hours ago
·
· in
Introduction to Fisher Projections
,
Organic Chemistry
Someone from Los Angeles, United States asked a question in
Organic Chemistry
What are Sawhorse projections in organic chemistry?
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5 hours ago
·
· in
Sawhorse Projections
,
Organic Chemistry
Ernest Z.
wrote an answer to a
Organic Chemistry
question
My organic chemistry textbook says that, in the glucose molecule, C-1 is behind the plane of the paper and the hydroxyl group on C-5 is in ...
You look at the formula as if you are wrapping it around a cylindrical tube. The Fischer projection of glucose ...
(more)
6 hours ago
·
· in
Introduction to Fisher Projections
,
Organic Chemistry
Ernest Z.
wrote a comment in
Organic Chemistry
Can a Fischer projection formula be used to represent D-1-2-glucose?
"I have no idea what you mean by D-1,2-glucose. Please rephrase the question."
7 hours ago
·
· in
Introduction to Fisher Projections
,
Organic Chemistry
Ernest Z.
wrote an answer to a
Organic Chemistry
question
In fischer projection bonds coming out of page is horizontally represented and bonds which are going in are represented vertically but what ...
The bonds above and below any two adjacent carbon atoms are behind the plane of the paper. The carbon chain has a eclipsed ...
(more)
7 hours ago
·
· in
Introduction to Fisher Projections
,
Organic Chemistry
Electron P.
wrote a comment in
Chemistry
Calcium arsenate, Ca3(Aso4)2, is a poison which was widely used as an insecticide. What is the mas of 0.475 mol of calcium arsenate?
"Ok :)"
7 hours ago
·
· in
Writing Ionic Formulas
,
Chemistry
Wataru
wrote an answer to a
Algebra
question
How do you calculate combinations of things?
Combinations of items are basically subsets of the items, so the number of combinations is the number of subsets of items. Let #C(n,r)# ...
(more)
9 hours ago
·
· in
Probability and Combinations
,
Algebra
Someone from United Kingdom asked a question in
Algebra
How do you read stem and leaf plots?
Answer question
9 hours ago
·
· in
Stem-and-Leaf Plots
,
Algebra
zoya
asked a question in
Biology
N fischer projection bonds coming out of page is horizontally represented and bonds which are going in are represented vertically but what ...
Answer question
10 hours ago
·
· in
Animal Classification
,
Biology
Someone from Saint Petersburg, United States asked a question in
Calculus
What are the applications of power series in other or further branches of mathematics?
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10 hours ago
·
· in
Power Series Solutions of Differential Equations
,
Calculus
Wataru
wrote an answer to a
Calculus
question
How do you use the limit comparison test on the series #sum_(n=1)^oo(n^2-5n)/(n^3+n+1)# ?
Let #a_n={n^2-5n}/{n^3+n+1}#. By using the leading terms of the numerator and the denominator, we can ...
(more)
10 hours ago
·
· in
Limit Comparison Test for Convergence of an Infinite Series
,
Calculus
Someone from United States asked a question in
Precalculus
How do you write the notation for range?
Answer question
10 hours ago
·
· in
Range
,
Precalculus
Someone from Wayne, United States asked a question in
Algebra
What is Clearing Denominators in Rational Equations?
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10 hours ago
·
· in
Clearing Denominators in Rational Equations
,
Algebra
Wataru
wrote an answer to a
Calculus
question
How do you determine the amount of work needed for movement of objects?
If #F(x)# denotes the amount of force applied at position #x# and it moves from #x=a# to #x=b#, then the work #W# can be found ...
(more)
10 hours ago
·
· in
Determining Work and Fluid Force
,
Calculus
Wataru
wrote an answer to a
Calculus
question
Is there a way to find the derivative of sin(x) without limits?
Well, the derivative of a function is defined using a limit, so if you are finding derivatives, then you are indeed using limits directly ...
(more)
10 hours ago
·
· in
Derivative Rules for y=cos(x) and y=tan(x)
,
Calculus
seph
wrote an answer to a
Algebra
question
How do you simplify #\frac{2}{x+2}-\frac{3}{2x-5}#?
Similar to adding and subtracting fractions, we need to make their denominator similar. #2/(x + 2) - 3/(2x - 5)# #=> (2(2x - 5) - 3(x + ...
(more)
10 hours ago
·
· in
Addition and Subtraction of Rational Expressions
,
Algebra
Someone from Los Angeles, United States asked a question in
Algebra
How does the midpoint formula involve finding averages?
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10 hours ago
·
· in
Midpoint Formula
,
Algebra
Someone from New Oxford, United States asked a question in
Algebra
How do you factor and solve #b^2-\frac{5}{3b}=0#?
Answer question
10 hours ago
·
· in
Zero Product Principle
,
Algebra
seph
wrote an answer to a
Algebra
question
What are asymptotes?
Asymptotes are lines that a particular function can get very very close to but never intersect. For example, the function #y = 1/x# is ...
(more)
10 hours ago
·
· in
Graphs of Rational Functions
,
Algebra
Wataru
wrote an answer to a
Precalculus
question
How do you solve rational inequalities?
Let us solve the following rational inequality. #f(x)={x+1}/{x^2+x-6} le 0# Set the numerator equal to zero, and solve for #x#. #x+1=0 ...
(more)
10 hours ago
·
· in
Solving Rational Inequalities on a Graphing Calculator
,
Precalculus
Someone from Singapore, Singapore asked a question in
Calculus
Use summation notation to express the sum?
Answer question
10 hours ago
·
· in
Sigma Notation
,
Calculus
Someone from Lithonia, United States asked a question in
Algebra
What is an example of long division of polynomials?
Answer question
11 hours ago
·
· in
Division of Polynomials
,
Algebra
seph
wrote an answer to a
Algebra
question
How do you convert standard form to scientific notation?
...
(more)
11 hours ago
·
· in
Scientific Notation
,
Algebra
Someone from Missoula, United States asked a question in
Algebra
How do you know whether a data set is a linear, quadratic, or exponential model?
Answer question
11 hours ago
·
· in
Applications of Function Models
,
Algebra
Someone from Rexburg, United States asked a question in
Precalculus
What is a bound of a function?
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11 hours ago
·
· in
Upper and Lower Bounds
,
Precalculus
Wataru
wrote an answer to a
Algebra
question
How do you solve for x in #3x-5 < x + 9 \le 5x + 13 #?
By separating into two inequalities, #{(3x-5 < x+9),(x+9 le 5x+13):}# Let us work on the first inequality. #3x-5 < x+9# by subtracting ...
(more)
11 hours ago
·
· in
Compound Inequalities
,
Algebra
Shiva Reddy
wrote an answer to a
Physics
question
Since there is no temperature lower than absolute zero, is there any maximum temperature possible?
Some scientists say the maximum temperature that can be attained is Planck's temperature. Planck's temperature is approximately #1.42 * ...
(more)
11 hours ago
·
· in
Temperature and Thermal Equilibrium
,
Physics
seph
wrote a comment in
Precalculus
How do you graph an ellipse written in general form?
"After transforming the equation into standard form, you can now graph as instructed in the other answer"
11 hours ago
·
· in
Graphing Ellipses
,
Precalculus
Kaneki
wrote a comment in
Physics
Since there is no temperature lower than absolute zero, is there any maximum temperature possible?
"Intriguing question."
11 hours ago
·
· in
Temperature and Thermal Equilibrium
,
Physics
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