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S.Umair
wrote a comment in
Algebra
#2^|x-1| - 2^x =|2^(x)-1| + 1#. Find the least value of x satisfying the equation?
"Thanks"
7 minutes ago
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· in
Expressions and the Distributive Property
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Algebra
Michael
wrote an answer to a
Chemistry
question
Predict predominant acide-base reaction: aqueous bleach (NOCL) aq solution reacts with aqueous solution of vinegar (CH3COOH) aq?
Aqueous bleach contains sodium hypochlorite #NaOCl#. Aqueous vinegar contains ethanoic acid #CH_3COOH#. When this is added to bleach ...
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22 minutes ago
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Balancing Redox Equations Using the Oxidation Number Method
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Chemistry
Student from Surrey, Canada asked a question in
Algebra
How do you find the constraints in a linear programming problem?
Answer
26 minutes ago
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Linear Programming
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Algebra
Student from United States asked a question in
Algebra
How do you solve linear programming problems on a graphing calculator?
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30 minutes ago
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Linear Programming
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Algebra
Massimiliano
wrote an answer to a
Trigonometry
question
How do you find possible triangles given two sides and an angle (SSA)?
The answer is: with the Sinus Law. First of all it is useful to say the notation in a triangle: Opposite at the side #a# the angle is ...
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35 minutes ago
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The Ambiguous Case
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Trigonometry
Student from Waco, United States asked a question in
Algebra
What are the different options to create a linear model?
Answer
41 minutes ago
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Problem Solving with Linear Models
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Algebra
Student from Egypt asked a question in
Calculus
How do I evaluate #int(1 + cosx)/sinx d x#?
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48 minutes ago
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Integration by Substitution
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Calculus
Student from United States asked a question in
Algebra
What are some Applications Using Linear Models?
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52 minutes ago
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Applications Using Linear Models
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Algebra
Massimiliano
wrote an answer to a
Algebra
question
What is the Zero Product Principle?
The [Zero Product Principle](http://socratic.org/algebra/polynomials-and-factoring/zero-product-principle) says that if there is a product ...
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55 minutes ago
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Zero Product Principle
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Algebra
KillerBunny
updated the answer to a
Precalculus
question
How do I find all the rational zeros of function?
To find the zeroes of a function, #f(x)#, set #f(x)# to zero and solve. For polynomials, you will have to factor. For example: Find the ...
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59 minutes ago
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Rational Zeros
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Precalculus
Gió
wrote an answer to a
Calculus
question
How do I evaluate #int5y ln (9y) dy#?
I would use [integration by parts](http://socratic.org/calculus/techniques-of-integration/integration-by-parts) where you ...
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An hour ago
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Integration by Parts
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Calculus
Massimiliano
updated the answer to a
Algebra
question
Why is function notation useful?
To differentiate between a function and a polynomial. Eg: #f(x) = 2x + 3# is a function. #p(x) = 2x + 3# is a polynomial. There's no ...
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An hour ago
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Function Notation
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Algebra
Massimiliano
wrote an answer to a
Algebra
question
How can you tell that #sqrt(18)# is #3sqrt(2)# without a calculator?
In this way: #sqrt18=sqrt(9*2)=sqrt9sqrt2=3sqrt2#.
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An hour ago
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Square Roots and Irrational Numbers
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Algebra
Massimiliano
wrote an answer to a
Algebra
question
How can slope be undefined?
The explicit equation of a line is: #y=mx+q#. So every line that can be expressed in this form has a ...
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An hour ago
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Slope
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Algebra
Massimiliano
wrote an answer to a
Trigonometry
question
How do you prove that tangent is an odd function?
A function is even if: #f(-x)=f(x)#. A function is odd if: #f(-x)=-f(x)#. In this ...
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An hour ago
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· in
Fundamental Identities
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Trigonometry
Mukhtar A.
wrote a comment in
Chemistry
Why Cl has a greater electron affinity than F?
"Thanks Earnest. "
An hour ago
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· in
Periodic Trends in Electron Affinity
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Chemistry
jcullinan21
wrote an answer to a
Chemistry
question
What is the value of Planck's constant in physics?
6.62606957 × 10-34 m2 kg / s
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An hour ago
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Planck's constant
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Chemistry
Massimiliano
wrote an answer to a
Trigonometry
question
What is ambiguous case of triangle?
To solve a triangle it is necessary to know **at least** three elements with an only **exception**: if these three elements are the three ...
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An hour ago
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The Ambiguous Case
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Trigonometry
Julian M.
asked a question in
Chemistry
What is chemical energy?
Answer
An hour ago
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· in
Chemical Reactions and Equations
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Chemistry
Massimiliano
wrote an answer to a
Physics
question
A 10 F, 20 F, 22 F, and 100 F capacitor are in parallel. What is the total capacitance?
The answer is: #152F#. - The difference of potential (#DeltaV#) across the two capacitors is the same (the one of the generator); - Q is ...
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An hour ago
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Capacitance
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Physics
Lea
updated the answer to a
Algebra
question
What is Clearing Denominators in Rational Equations?
I have created a video answer (with different examples) here: [Clearing Fractions in ...
(more)
An hour ago
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· in
Clearing Denominators in Rational Equations
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Algebra
Ernest Z.
wrote an answer to a
Chemistry
question
You dilute an original sample 1:30. You then count the number of yeast cells in the 1:30 dilution.You count an average of 7 cells in the ...
There are 5.25 × 10⁷ cells/mL in the original sample. **Step 1.** Find the volume of a box. I assume that the depth of the box is 0.1 mm. ...
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An hour ago
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Dilution Calculations
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Chemistry
Massimiliano
wrote an answer to a
Algebra
question
How do you graph a line using slope-intercept form?
The equation of a line in explicit form is: #y=mx+q#, where #m# is the ...
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2 hours ago
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Graphs Using Slope-Intercept Form
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Algebra
Massimiliano
wrote an answer to a
Calculus
question
How do I evaluate#int_0^(pi/2) x sin^2(x)dx#?
The answer is: #1/16(pi^2+4)# The first thing to do is to lower the degree of the function sinus with the Half-angle ...
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2 hours ago
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Integration by Parts
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Calculus
Student
updated the answer to a
Chemistry
question
How are ground state electrons excited?
YOLO IS THE ANSWER TO EVERYTHING YOU CHEESE NUGGETS
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3 hours ago
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Excited States and Ground States
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Chemistry
Welder G.
wrote a comment in
Calculus
What is #intsqrt(x^2-9)/(x) dx#?
"What do you want to know? What is it ou how to calculate it?"
3 hours ago
·
· in
Integrals of Polynomial functions
,
Calculus
Marcus M.
wrote an answer to a
Biology
question
What is glycerol used for?
In biology, glycerol can be used to form lipid. For example, 1 glycerol molecule with 3 fatty acid molecules (can be the same or different) ...
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4 hours ago
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Lipids
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Biology
Abira B.
wrote an answer to a
Chemistry
question
What are metals?
Metals are hard sold material the conducts electrical well. There are different types of metal, used for different types of things. for ...
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4 hours ago
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Metals and Nonmetals
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Chemistry
madprestidigitator
wrote an answer to a
Calculus
question
What is the antiderivative of #pi^(x-1)#?
To integrate pi to a power, recall your rules for integrating exponential functions where the base is not e. In general if *b*>0, ...
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4 hours ago
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· in
Integrals of Exponential Functions
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Calculus
Ghadah F.
asked a question in
Chemistry
Explain the melting point trend in the periodic table please ?
Answer
5 hours ago
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· in
The Periodic Table
,
Chemistry
Student from San Pablo City, Philippines asked a question in
Earth Science
How can fishing be referred to as a "tragedy of the commons"?
Answer
5 hours ago
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· in
Use and Conservation of Resources
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Earth Science
Avanika
asked a question in
Physics
In a p-type semiconductor, why is it that the acceptor energy level is nearer to the valence band rather than the conduction band unlike an ...
Answer
5 hours ago
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· in
Defining Heat
,
Physics
imene
asked a question in
Chemistry
What is an example of a rate law practice problem?
Answer
5 hours ago
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· in
Rate Law
,
Chemistry
imene
asked a question in
Chemistry
How can the rate law be determined?
Answer
5 hours ago
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· in
Rate Law
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Chemistry
Gwynlyn B.
wrote an answer to a
Earth Science
question
What is geothermal energy?
This is the heat generated by geological phenomena such as magma chambers which heat up ground water reservoirs.
(more)
5 hours ago
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· in
Renewable Energy Resources
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Earth Science
Gwynlyn B.
wrote an answer to a
Earth Science
question
Is lava produced at a continent-continent convergent boundary? Why or why not?
Lava is magma that has extruded on the the surface of the Earth's crust, it occurs where ever there is sufficient buoyancy of magma, ...
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5 hours ago
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· in
Theory of Plate Tectonics
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Earth Science
chandini
asked a question in
Chemistry
What is hybridisation?
Answer
5 hours ago
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· in
Orbital Hybridization
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Chemistry
Student from Romania asked a question in
Statistics
A card is drawn from a standard deck. A second card is drawn, without replacing the first card. Consider the following events: Event A = ...
Answer
6 hours ago
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· in
Conditional Probability
,
Statistics
Student from Sunnyvale, United States asked a question in
Statistics
What is a uniform density curve?
Answer
6 hours ago
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· in
Uniform Distribution
,
Statistics
jay724
asked a question in
Chemistry
How do you extract iron from its ore?Please explain.
Answer
6 hours ago
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· in
Oxidation and Reduction Reactions
,
Chemistry
Student from Cebu, Philippines asked a question in
Chemistry
What are ternary phase diagrams?
Answer
6 hours ago
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· in
Phase Diagrams
,
Chemistry
Student from Trenton, United States asked a question in
Calculus
How do I calculate the Maclaurin series for #arctan (x^3)#?
Answer
7 hours ago
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· in
Constructing a Maclaurin Series
,
Calculus
stefan_zdre
updated the answer to a
Chemistry
question
Hi, I have this exercise: Unit: MMGS (millimeter, gram, second); Decimal places: 2 Part origin: Arbitrary;Material: AISI 1020 Steel D = ...
Well, the formula you've used for [density](http://socratic.org/chemistry/measurement-in-chemistry/density) is wrong. ...
(more)
7 hours ago
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· in
Density
,
Chemistry
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Nova Scotia, Canada
Ernest Z. joined Socratic 1 year ago and has written 1630 answers and edited 607.
In their own words: "I am a retired Chem prof from Acadia University, where I taught Intro Chemistry and Organic Chemistry for 33 years."
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