# Posts by bb

Total # Posts: 164

Physics
Thank you.

Physics
Suppose you used a 300 Hz tuning fork to produce resonant frequency in a tube whose diameter is 3.0 cm. At what length of the tube will you the resonant frequency if the air temperature inside the tube is 25 C. Assume that the tube is closed at one end.

Language Arts

Language Arts
I really need it now

Language Arts
What is the topic sentence of this paragraph from life without gravity?

chemistry
What is the molar solubility of silver carbonate, Ag2CO3?

math
Thx Aurora I saw Kylie's but thx

Retailing
The steps in a retail strategy are: A. interdependent of each other. B. independent of each other. C. organized by specific and then general factors. D. organized by short- and then long-term factors.

Ya'll are so imature

Chemistry
Explain the relationship between the various properties of gases including pressure, temperature, volume, amount of gas, molar mass, and particle speed.

Chemistry
Compare the diffusion rates of hydrogen and oxygen gases.

Chemistry
A sample of gas is collected by water displacement. The atmospheric pressure in the room is 757mmHg and the vapor pressure of water is 17.5mmHg. What is the partial pressure of hydrogen under these conditions?

Chemistry
Thanks!

Chemistry
1.02atm x 2,20L = 078atm x V2 330K 380K 2.244/ 330=.0068? I'm lost.

Chemistry
A sample of gas at 57C and 1.02atm occupies a volume of 2.20L. What volume would this gas occupy at 107C and 0.789atm?

Chemistry
1.06atm x 1.25L/250.0K 1.325/250.0K m=.0053

Chemistry
A sample of gas at 57oC and 1.02atm occupies a volume of 2.20L. What volume would this gas occupy at 107oC and 0.789atm?

Social Studies
Thx SkullCrusher95 I got a 100%

math
Solve for x: 3x − 5 = 2x + 6.

Thx Lun and yes Isabelle

Health
The difference between dysthymic disorder and major depressive disorder is that ________. A. Symptoms of Dysthymic disorder are usually less severe than those of major depression B. Symptoms of Dysthymic disorder are usually shorter than those of major depression C. Symptoms ...

math
Sarah has a collection of nickels, dimes, and quarters worth \$9.25. She has 10 more dimes than nickels and twice as many quarters as dimes. How many coins of each kind does she have?

science
A student needs to mix 50 ml. of glycine with 950 ml. of distilled water. This student has only a 25 ml. graduated cylinder. How many times will the student have to use the cylinder both glycine and water to prepare the solution?

Algebra
330.2657

Science
Yes I agree Anon and wiki is a untrustable website

Science
Thx helper

Science
Thx so much Buttmunch just don't listen to them they are imature

Computer Science
You are configuring the local Windows Firewall on your Windows 7 computer. Which network category needs to have the most stringent rule set? A.Public You run a Defrag utility on your computer to see if you need to defrag your system volume. What fragmentation level represents ...

Computer Science
Online Exam 8_07 Question 1 of 20 5.0/ 5.0 Points What type of hard drive does not require defragging? C. A solid-state drive hosting Windows 7 Question 2 of 20 5.0/ 5.0 Points How is a worm different from a virus? C. It doesn’t require human intervention to spread. ...

SOC120: Introduction to Ethics & Social Responsibi
The ethical emotivist would most agree most which statement?

phy
calculate the work done on the system when 1.00mol of gas held behind a piston expands irreversibly from a volume of 1.00dm cube to a volume of 10.0dm cube against an external pressure of 1.00 bar

government
When the Court decides a case, it bases its decision on

science
I think its A because the the glass water only decreased by 2 degrees and since the pool has so much water so it takes a long time to heat up

Physics
na

Science
Thanks ????? You are the best and I go to Connexus

science
im not sure

economics
What is the effective marginal tax rate of a government antipoverty program that guarantees every family a minimum income? Explain. Why might trying several antipoverty benefits to income level lead to an effective marginal tax rate of greater than 100 percent?

Art
Thx so much Homework Helper:) You are the best

chemistry
354

economics
consumer surplus 25

Physics
A Car moving North at 9 m/s strikes a stationary car of equal mass. The first car moves off after the collision at an angle of 30 degrees West of North, with a speed of 6 m/s. What is the speed of the second car after the collision? My resources have poor explanation of what ...

physical chemistry
q = mcdT 72 400 = 752 X C X 9.95 C = 9.676 J/C

social studies (check plz)
Thanks allie

social studies (check plz)
Doesn't matter Ms Sure she is still helping

Science question?
Thx just tryna to be helpful you are awesome

SCIENCE HELP! SOMEONE!
thanks @zaynmalik1D

physics
A billiard ball strikes and rebounds from the cushion of a pool table perpendicularly. The mass of the ball is 0.38 kg. The ball approaches the cushion with a velocity of +2.30 m/s and rebounds with a velocity of -1.90 m/s. The ball remains in contact with the cushion for a ...

chemistry
In a chemical reaction, exactly 2 mol of substance A react to produce exactly 3 mol of substance B. How many molecules of substance B are produced when 26.5 g of substance A reacts? The molar mass of substance A is 21.9 g/mol. Step 1: Convert the mass of A to moles. Step 2: ...

algrbra
61.25

Chemistry
What is the percent ionization of a solution prepared by dissolving 0.0286mol of chloroacetic acid, in 1.60L of water?for choloroacetic acid, Ka=1.4x10^-3

Chemistry
what is Kc at 25 celsius for the following equilibrium? CH3BH3^+ +H2O <==> CH3NH2 + H3O^+ Kb=4.4x10^-4 I got 4.0x10^4 / 1.0x10^-14 = 4.0x10^-10 (correct)?

Chemistry
the ka of hypochlorous acid hclo is 3.5 x 10^-8. What is Kb for the hypochlorite ion?

Chemistry
what is the Ka for ethylammonium cation,C2H5NH3^+, at 25 celsius?(Kb for C2H5NH2=4.7x10^-4 at 25 Celsius)

geometry
A parallelogram ABCD has perimeter equal to 124. Let E be the foot of the perpendicular from A to BC, and let F be the foot of the perpendicular from A to CD. If AE=7 and AF=24, what is the area of the parallelogram?

chmistry
balance each of the following chemical equations ,using the change in oxidation number method. cu +h2so4=cuso4+so2+h2o

chemistry
h2s + HNO3 -->s+ no+H2O balance by oxidation number change

economics
hh #

chmistry
3O2(g)---> 2O3(g) Delta H = +284.6 kJ what is the sign of delta G and delta S

physices
A sound wave has a wavelength of 3.0 m.? The distance from a compression centre to the adjacent rarefaction centre is:

physices
A sound wave has a wavelength of 3.0 m.

a person stands on a bathroom scale that rest on t
a person stands on a bathroom scale that rest on the floor of an elevvator. when the elivetor is stationary the scale registers 50kg. when the lift acclelerates up ward the scle registers 60kg .taking g=10m/s^2, the best estimate acceleration of the lift is ;

calculus
f(x) = (3x^3+5x^2+8x-8)/x find the derivative

Math
hate it

Donut is right thx :)

math
answers are not c c d a c

PHYSICS 1 ..
The distance is 18.3. 6.3+4+3+5

chmistry
a solutiona solution is made by dissolving 3.75g of a pure nonvolatile solute in 95g of acetone. the boiling point of pure acetone was observed to be 55.95 Centigrade that,and that of the solution was 56.50 Centigrade.if the molar boiling point elevation constant(Kb)of acetone...

Thanks I got them all correct

Health
C?

simplify tan^2 theta + 1/ tan^2 theta csc2 theta –1 ~ tan2 theta ~ 1

chemistry
bv b

Math
40,000 meters

i did the same way how you should me but i keep getting a wrong answer :/

thats wrong

In February 2004, scientists at Purdue University used a highly sensitive technique to measure the mass of a vaccinia virus (the kind used in smallpox vaccine). The procedure involved measuring the frequency of oscillation of a tiny sliver of silicon (just 28.0 long) with a ...

Physics help
A light rope is wrapped several times around a large wheel with a radius of 0.435 m. The wheel? A light rope is wrapped several times around a large wheel with a radius of 0.435 m. The wheel rotates in frictionless bearings about a stationary horizontal axis. The free end of ...

physical science
Pure

chemistry
A 0.12-mole sample of nitrogen gas occupies a volume of 2.55 L. What is the volume of 0.32 mol of nitrogen gas under the same conditions?

Chemisrty
Carbon tetrachloride (CCl4) and benzene (C6H6) form ideal solutions. Consider an equimolar solution of CCl4 and C6H6 at 25°C. The vapor above this solutionis collected and condensed. Using the following data, determine the composition in mole fraction of the condensed ...

how to do Legal Research for this Issue Employment Discrimination 2. Textbook reference: Chapters 5, 35 3. Possible search terms: ethics, employment discrimination, Title VII, past discrimination 4. Here is the situation: ABC Corporation decides to respond to what it sees as a...

English
Serious is to careful as nervous is to____________

that's a dumb question oh well 16

physics
99

Genetic engineering and Gene splicing
what's the difference between genetic engineering and gene splicing?

plagiarism workshop
Now that you have developed an in-text citation for a summary, paraphrase, and a direct quote, and created a reference for the paragraph provided in Exercise 2, reflect on the thought processes you used for each aspect. How did your approach differ when writing each? What ...

geometry
If a quadrilateral has 4 congruent sides and congruent diagonals. Could it immediately be concluded to be a square?justify the answer. If not was is a counterexample

Insurance Forms
I need help with a few questions. Could you let me know if I'm going in the right direction. 1- CHAMPVA would be considered a primary payer for a patient who has ______ coverage. A- Medicaid B- fee-for-service C- Medicare D- SSI Answer: A 2- You should record payments that...

childcare
wrong

math
Find the age, to the nearest month, of the people in your class. Use the average age in months as your zero and positive and negative numbers to write the age of each person in relation to the average. Work in a group to find a good visual way to display this information. ...

MATH
you have 4 blue crayons, 2 red and 3 orange, what is the probablity of pulling a red crayon and then an orange without replacement?

uop
Choose some numbers and work in a small group to figure out how to apply the tests for divisibility by 4, 6, 7, 8, 9, and 11 given on pp. 211–214. a. Use a calculator to select some numbers that are and some that aren’t divisible by these numbers. Give an example to ...

math
While performing a calculation, you divide a number by 5 two times to get the answer 12. You should have divided by 5 only once. What is the correct result of the calculation

Physics
science

math
suppose square was not a word used in mathematics. How would you descibe the shape that the word represents?

math
ã10(ã11-ã7) can you help me multiply and simplify

math
ã10(ã11-ã7) can you help me multiply and simplify

com 155
Write a 100-word passage to Susan Anker, the author of the course’s textbook, in which you describe five details from her book that are good and five details about the book that are written well.

English