Thursday

May 5, 2016
Total # Posts: 96,242

**Chemistry**

I just know the 6 steps to balance: 1. identification 2. balance mass 3. balance oxygen 4. balance hydrogen 5. balance charge 6. combine
*February 24, 2016*

**Chemistry**

The two most common oxidation states are Cr(III) and Cr(VI). Balance the following oxidation-reduction equations that involve one of these oxidation states of chromium. Assume that the reactions occur in acidic solution. A. Cr(s) + O2 (g) + H^+ <-> Cr^3+ B. Fe^2+ (aq) + ...
*February 24, 2016*

**Math**

Two circles with radii of 3cm and 4cm what is the ratio of the area?
*February 23, 2016*

**Geometry**

Thank you
*February 23, 2016*

**Geometry**

ted skated through one of the face off circles at a hockey rink. His path through the circle is shown in the figure. Given that the face off circle is 15 feet in diameter what distance within the face off circle did Ted travel?? If you google this there will be documents so ...
*February 23, 2016*

**Chemistry**

If dilute 580 mL of 1.0 M lithium acetate solution to a volume of 1250 mL, what will the concentration of this solution be?
*February 23, 2016*

**Chemistry**

If I have 275 mL of a 1.5 M NaBr solution, what will the concentration be if I add 450 mL more water to it?
*February 23, 2016*

**chemistry**

if you mixed 100 grams of Magnesium nitrite with 100 grams of Lithium Phosphide and made magnesium phosphide and lithium nitrite how many grams of each product would you make and how many grams of each reactant would be left over at the end?
*February 23, 2016*

**MATH HELP**

the third one because the square root of the first number is 4x and the last number is 3. multiply these two numbers and then multiply that number by two, you get 24x. That is the middle number so the third option is your number
*February 23, 2016*

**MATH HELP**

Select the polynomial that is a perfect square trinomial. 9x^2 + 9x + 1 36b^2 − 24b + 8 16x^2 + 24x + 9 4a^2 − 10a + 25
*February 23, 2016*

**chemistry**

If you mixed 100 grams of magnesium nitrite with 100 grams of lithium phosphide and made magnesium phosphide and lithium nitrite how many grams of each product would you make and how many grams of each reactant would be left over at the end.
*February 23, 2016*

**math**

death valley has elevation of -282 feet relative to sea level. Explain how to use absolute value to describe the elevation of death valley as a positive interger
*February 23, 2016*

**Math**

Yay! Thank you :D
*February 23, 2016*

**Math**

So here are my results for all: Company A: 0.07 c/minute Company b: 0.06 c/minute Company C: 0.05 c/minute So the answer would be C?
*February 23, 2016*

**Math**

Ohh. Well, know I to divide instead. Can I take $5.50 and divide it by 90 to get my answer for B?
*February 23, 2016*

**Math**

Multiplication works better for me.
*February 23, 2016*

**Math**

For B, I'd multiply it by 2 to get 90, then mutliply $2.75 by 2 to get 5.50.
*February 23, 2016*

**Math**

I'm pretty sure that you could either multiply or divide.
*February 23, 2016*

**Math**

The rates for Internet use offered by three companies are shown below. Company A: $6.00 every 90 minutes of use Company B: $2.75 every 45 minutes of use Company C: $3.00 for every 60 minutes of use Which company offers the lowest rate per minute?
*February 23, 2016*

**math**

what is the equivalent ratio of 12 to 12?
*February 23, 2016*

**algabra**

a train and a bus leave at 10:00 a.m. from towns 45 mi apart. they travel toward each other. the bus travels at 40 mph. the train travels at 50 mph. at what time do they meet?
*February 23, 2016*

**french**

Les élèves vont __ lycée
*February 23, 2016*

**Chemistry**

So it isn't an ester? It is just a carboxylic acid? I'm just confused with the naming because of the hydroxy
*February 23, 2016*

**Chemistry **

What functional group(s) is(are) in 4-hydroxoybenzoic acid? My Answer: Would it be carboxylic acid and an ester?
*February 23, 2016*

**Math**

Is there a way to send pictures on this website so I can have help with Geometry?
*February 23, 2016*

**Math**

What is the product of a number and 9, less 20, is 7
*February 23, 2016*

**Math**

The iron cross is a skiing trick in which the tips of the skis are crossed while the skier is airborne. Find the value of x in the iron cross shown.
*February 23, 2016*

**Math**

A friend brought 2 boxes of pencils and 8 notebooks to school and it cost $11. He went back and spent $11.25 on 3 boxes of pencils and 5 notebooks. How much would 7 notebooks cost?
*February 23, 2016*

**Algebra 1**

Algebra 1 help please :( Use the point-slope from linear equation given to complete the following problems.... y+4=-4(x-2) 1. What is the slope of the given line? 2. What point does this line pass through, which is the basis of this equation? 3. Rewrite this equation in slope-...
*February 23, 2016*

**Math**

1/2p+6
*February 23, 2016*

**Algebra 2**

Slips of paper with the numbers one through 20 are placed in a hat. If a slip of paper is pulled out of the hat and discarded and then another slip of paper is picked find the probability of both numbers will be greater than 18 or both numbers will be less than three
*February 23, 2016*

**Unit Test! Help! ;[**

why did the British look to colonize the region, and how did that affect the indigenous people? Help!
*February 23, 2016*

**u.s. history**

. In 1840 the population of chicago was only 4,470. by 1990 the city's population was 1, 698,575 which factor best explains the population change A- the constructuion of railroads connecting northeastern cities and Midwestern farms B- the reduction in immigration quotas on...
*February 23, 2016*

**Math**

A trapezoid has two parallel sides. Why isn't it classified as a parallelogram? This is not on my assignment I'm just curious...
*February 23, 2016*

**L.O**

is the study of the self in relation of others and to the society
*February 23, 2016*

**life science**

Biological term for: the presence of definite upper and lower surfaces in animals
*February 23, 2016*

**Can I get some help on my math plz?**

So it's C.
*February 23, 2016*

**Can I get some help on my math plz?**

The intersection of roads S and T creates a 44.4 degree angle. What are the complementary and supplementary angles of this intersection? A. The comp. angle is 22.2 degrees and the supp. angle is 55.6 degrees. B. The comp. angle is 55.6 degrees and the supp. angle is 22.2 ...
*February 23, 2016*

**math**

A plane claimed 10.000m in 19.4 minutes. What was the average rate per minute
*February 23, 2016*

**General chemistry i**

Thanks
*February 23, 2016*

**Maths**

How many four digit numbers can be made without the first digit being 0 from 2006?
*February 23, 2016*

**english**

This passage implies that women in Elisa’s time and place were
*February 23, 2016*

**Science**

Why is UTC used for astronomical calculations?
*February 23, 2016*

**Chemistry**

That is great advice! Thanks, but the question asks specifically for using only melting point, so how do I do it with only melting point?
*February 22, 2016*

**Chemistry **

Imagine that you have a pure sample of an unknown compound that you are told is either 2-naphthol OR benzoic acid. In the lab, you also have access to samples of pure 2- naphthol and pure benzoic acid. However, both of these pure substances melt at 123 °C: the same ...
*February 22, 2016*

**Math**

Write a word problem involving fractions for which you would use the work backward strategy and addition to solve.Include your solution.
*February 22, 2016*

**Math**

A 3 pack of boxes of juice costs $1.09.A 12 pack of boxes costs $4.39. A case of 24 boxes costs $8.79. Which is the best buy? explain your reasoning.
*February 22, 2016*

**Math**

change rises 4 feet in 9 seconds into an equation with two variables and change moves 900 ft every 10 seconds into an equation with two variables
*February 22, 2016*

**Math**

A bicyclist is traveling at an angular speed of 8pi radians per second. How fast is she traveling in miles per hour if her tires are 28 inches in diameter?
*February 22, 2016*

**Bio**

The high temperatures in the desert environment can kill Beetles Large Beedles cannot burrow into the sand to escape the heat. Therefore, fewer of the large Beetles will survive. The Beetles are affected by a deadly disease that spreads rapidly through the desert. Green ...
*February 22, 2016*

**Bio**

What is the difference between cause adaptive variations and select adaptive variations
*February 22, 2016*

**Bio**

Is this considered an adaptive value? Brown beetles are resistant to this viral disease
*February 22, 2016*

**Spanish**

Are all comic strips suppose to be made funny? Because I have to make a comic strip for Spanish but I don't know if I'm suppose to make it funny because My teacher never said anything
*February 22, 2016*

**Geometry**

How do I find the interior angles of an irregular polygon WITH one external angle? I have an image as an example, but Jiskha won't allow internet addresses. What do I do?
*February 22, 2016*

**Math**

The height of a building in an architectural drawing is 10 in. Its actual height is 150 ft. What is the scale of the drawing
*February 22, 2016*

**Health (can someone plz check my answers??)**

I think 4. is C and 5. is D? Not sure though
*February 22, 2016*

**Health (can someone plz check my answers??)**

1. The functions of the respiratory system are... (there are two answers) A. To pump blood to the body B. To deliver oxygen to the body*** C. To remove carbon dioxide from the body*** D. To absorb nutrients 2. The dome-shaped muscle that lies below the lungs and is important ...
*February 22, 2016*

**exp 105**

Question 2. 2. Select the sentence that is punctuated correctly. (Points : 1) The oil from Eucalyptus trees which are native, to Australia is known for its medicinal properties. The oil from Eucalyptus trees, which are native to Australia, is known for its medicinal properties...
*February 22, 2016*

**physics**

L=2 m, s=πr² = π(8*10⁻³)² =64π*10⁻⁶ m², ρ=1.8*10⁻⁸Ohm•m. a. R= ρL/s b. I=U/R c. j=I/s d. the charges are on the surface of the wire => the electric in the wire is zero
*February 22, 2016*

**physics**

Pressure P= mg/S P₁ = mg/s₁ =0.4•10/0.2•0.2 =100 Pa P₂ = mg/s₂ =0.4•10/0.1•0.1 =400 Pa P₃= mg/s₃ =0.4•10/0.05•0.05 =1600 Pa
*February 22, 2016*

**Art**

The correct answer is B It created a balanced and intriguing visual composition
*February 22, 2016*

**science/bioligy**

How would a scientist use DNA or protein sequences from three different organisms to construct a cladogram? need help!!! how do I do this??
*February 22, 2016*

**math**

Describe the transformation in f(x)= -4x from its linear parent function. is it reflection and rotation?
*February 22, 2016*

**chemistry **

If you begin with 0.030 L of a 2.5M NaOH solution, what concentration will you end up with if you dilute it to 0.050?
*February 22, 2016*

**math**

A spinner is spun 100 times. It lands on brown 50 times,lands on red 25 times and lands on yellow 25 times.Draw a spinner which will give this theoretical probability distribution. How to draw this spinner? Plz help
*February 22, 2016*

**Math**

What is a counterexample for the conjecture? Conjecture: Any number that is divisible by 4 is also divisible by 8. A. 24 B. 40 C. 12 D. 26 i think D
*February 22, 2016*

**accelerated science**

what is the energy level of visible light, infrared, and radio waves in joules?
*February 22, 2016*

**History**

How did the war with Mexico lead to conflict between the North and the South?
*February 22, 2016*

**Science**

In pea plants, yellow seeds are dominant over green seeds. Round peas are dominant over wrinkled peas. Cross two pea plants that are heyerozygous for both traits.
*February 22, 2016*

**gen chem**

The rate constant of a first order reaction is 4.60 x 10-4 s-1 at 350 oC. If the activation energy is 104 kJ/mol, calculate the temperature in Kelvin at which its rate constant is 1.80 x 10-3 s-1.
*February 22, 2016*

**math**

use a random number to use for the sum Ex. 300 is going to be the sum we are using and then Im going to use i for the interest rate so it doesn't get confusing with the variables 300=sum i=interest rate 300xi^15=300x4 300xi^15=1200 i^15= 4 15square root of 4 = 1.09682498
*February 21, 2016*

**Physics 20 **

A 90.3 cm long pendulum is released from a vertical height of 20 cm and is allowed to swing freely. Determine the greatest speed of the pendulum.
*February 21, 2016*

**Algebra**

height has to equal 0 because its hitting the ground 0=480t-16t^2 factor 0=16t(30-t) so t=0 or 30 0 is when its fired so it must be 30 so it hits the ground again after 30 seconds
*February 21, 2016*

**math**

Thank you Very much Ms.Sue
*February 21, 2016*

**math**

Traveling at 55 miles per hour,approximately how long will it take Michael to drive 250 miles? (1) between 1 and 2 hours (2) between 2 and 3 hours (3) between 3 and 4 hours (4) between 4 and 5 hours (5) between 5 and 6 hours I think the answer is 4?
*February 21, 2016*

**Chemistry**

Calculate the following and write your answer in scientific notation 6.6 x 10^6 (8.8 x10^2) x (2.5 x 10^3)
*February 21, 2016*

**algebra**

find payment necessary to amortize a 8% loan of $2000 compounded quarterly with 12 quarterly payments.
*February 21, 2016*

**social studies**

It's 5 ms.sue
*February 21, 2016*

**social studies**

I pick 1
*February 21, 2016*

**social studies **

A democracy may be defines by the political principal that the government is created by,derives it's powers from,and exists to serve the people. According to this statement,which of the following is inconsistent with a democratic form of government? (1) The citizens of a ...
*February 21, 2016*

**social studies**

Thank you ms.sue
*February 21, 2016*

**social studies **

The fourth amendment states that the right of the people against unreasonable searches and seizures of their persons,houses,papers,and personal effects shall not be violated.This amendment to the u.s constitution upholds which of the following common law principals? (1) the ...
*February 21, 2016*

**physics**

A charge +q is at the origin. A charge -2q is at x = 1.70 m on the +x axis.
*February 21, 2016*

**social studies **

Reconstruction was a more bitter experience for the south than the the civil war itself.which of the following historical developments best supports the author's point of view?
*February 21, 2016*

**social studies **

International efforts are being made to safeguard against the misuse of weather modification.an example of the potential to misuse the weather is
*February 21, 2016*

**Chemistry - Vapor Pressure**

a.)What is the partial vapor pressure of a benzene above solution obtained by mixing 44.7 g benzene, C6H6, and 77.3 g toluene, C6H5CH3, at 25 ∘C? At 25 ∘C the vapor pressure of C6H6 = 95.1 mmHg; the vapor pressure of C6H5CH3 = 28.4 mmHg. b.)What is the partial ...
*February 21, 2016*

**Biology help!!**

what compounds (fats, starch, protein and simple sugar) do the following foods have? Oatmeal Margarine Salmon Whole milk Chocolate chip cookies Peach
*February 21, 2016*

**Math**

The U.S life expectancy of a baby born in 1960 was 69.8 years. For a birth year of 2010, the U.S life expectant was 78.5 years. Let Y be the US life expectancy for a baby born in the year x, where x=0 represents the year 1960. What would the life expectancy for a baby born in ...
*February 21, 2016*

**English**

What does the quote "nature is not human hearted' by Lao Tzu mean?
*February 21, 2016*

**physics**

Three point charges, +6.5 μC, +1.8 μC, and −3.4 μC, lie along the x-axis at 0 cm, 1.7 cm, and 5.4 cm, respectively. What is the force exerted on q1 by the other two charges? (To the right is positive.) The Coulomb constant is 8.99 × 109 N · m2...
*February 21, 2016*

**chemistry functional groups**

thanks!!
*February 21, 2016*

**chemistry functional groups**

For some context Im trying to name all the groups of EDTA, there's some carboxylic acids and amines and some CH2 but idk what to call those lol
*February 21, 2016*

**chemistry functional groups**

Can a singly bonded CH2 group be classified as an alkyl or an alkane group? It's not the vinyl. Thanks!
*February 21, 2016*

**L.o**

to communicate effectively
*February 21, 2016*

**L.o**

Life orientation
*February 21, 2016*

**math**

what does the fox say to the dog?
*February 21, 2016*

**Math**

6 less than a number is 18
*February 21, 2016*

**life orientation**

Make them safety in our community
*February 21, 2016*

**life orientation**

Xenophobia iz the membr of the foreign
*February 21, 2016*