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Questions and answers by anne

Questions (153)

In a survey 200 people were asked what they liked to do the most.Whats percent about?If 150 people said they liked to swim, then
1. 2 answers
2. 1,115 views
A person holds a ladder horizontally at its center. Treating the ladder as a uniform rod of length 3.55 m and mass 10.31 Kg,
1. 1 answer
2. 783 views
solve the porportion 2/7 = x/42the answer is below, but which one A.) 1/2 B.) 12 C.) 2/7 D.) 6 Can you help me pleeezz
1. 1 answer
2. 434 views
Is it great-grandma, great grandma, Great-grandma, Great-Grandma, or Great Grandma? Thanks!
1. 4 answers
2. 412 views
In the sentence, "He is as sly as a fox", what part of speech is "as"? Is "as sly as a fox" an adjective? Is "sly" the object of
1. 3 answers
2. 1,099 views
place each given figure in a coordinate plane. what are the coordinates of each vertex?a) a right triangle b) an isosceles
1. 2 answers
2. 1,154 views
prove the following statements using a coordinate proof.the diagonals of a rectangle bisect each other.
1. 4 answers
2. 1,268 views
finding the product for (7x+1)(x^2+1) and for the problem (2x+6)(x-10) Also finding the product thank you very much
1. 3 answers
2. 341 views
what is the definition of social and physical health?
1. 1 answer
2. 404 views
There are 7 girls in a bus.Each girl has 7 backpacks. In each backpack, there are 7 big cats. For every big cat there are 7
1. 1 answer
2. 286 views
If you look at the Periodic Table,you will see chlorine with a relative atomic mass of 35.5. That means the average mass of a
1. 1 answer
2. 471 views
In an atom, there is a force that holds the protons & neutrons in the nucleus. Is this force called the nuclear force?What about
1. 3 answers
2. 462 views
1)Fill in the blanks. In a liquid, particles are _____arranged. They move about in ____ directions and slide over one another.
1. 5 answers
2. 1,744 views
1) Instead of using the word "random",is it acceptable to say particles in a liquid move about in "different" directions?2) Why
1. 2 answers
2. 1,004 views
For diatomic molecule, must the 2 atoms be of the same element, e.g H2?Is CO a diatomic molecule?
1. 2 answers
2. 1,039 views
"Blow up a balloon and tie it up. Leave it for a few days. After a few days, the balloon becomes smaller.Why?"The answer given
1. 1 answer
2. 399 views
1) Does Alumnium react with steam to give metal oxide and hydrogen gas?2) Does Aluminium react with dilute hydrochloric acid?
1. 2 answers
2. 563 views
I read in a book that gas particles move rapidly in all directions. Somehow I find that random directions is better.The word
1. 2 answers
2. 539 views
Do potato cells have chloroplasts?
1. 1 answer
2. 366 views
What is the chemical equation for the reaction between iron and sulphur to produce iron sulphide? Do we write sulphur as S or
1. 5 answers
2. 515 views
I am rather confused. Is sand considered a mixture or a compound? Some have said it is a compound because it is silicon dioxide.
1. 1 answer
2. 392 views
Is sulphuric acid covalent? Please explain. Thanks.
1. 1 answer
2. 367 views
We say that an ionic bond is the electrostatic force of attraction between oppositely charged ions. What does electrostatic
1. 1 answer
2. 401 views
1) I heard him say that...Please explain the grammar rules for "say" (present tense) after the word "heard". 2) A Economic
1. 2 answers
2. 525 views
I have two questions about finding the slope of a line. First question: Is the formula Y2-Y1 over X2-X1? Second question: When I
1. 1 answer
2. 401 views
our class was given an extra credit assignment where we have to design a mobile that has both the net forces and torques = 0. i
1. 1 answer
2. 458 views
name 12 careers in home economic management
1. 1 answer
2. 442 views
the trees bent in the wind.(and) their leaves fluttered. need to join these sentences together by using and
1. 1 answer
2. 271 views
Sodium azide, the explosive chemical used in atuomobile airbags, is made by the following reactions:NaNO3 + 3NaNH2 => NaN3 +
1. 2 answers
2. 733 views
Oxygen has a charge of -2Sulfur has a charge of -2 My product in a equation is S02 but how is this possible is they both have
1. 3 answers
2. 1,201 views
Describe the path of a moving body whose acceleration is constant in magnitude at all times and is perpendicular to the
1. 3 answers
2. 1,517 views
how would u factor ab (to the 2nd power) - b
1. 1 answer
2. 271 views
Give the cell diagram notation of the electrochemical cell that could be used to determine experimentally the dissociation
1. 1 answer
2. 1,002 views
The corrosion of iron can be thought of as an electrochemical cell reaction. Calculate the voltage difference between two points
1. 2 answers
2. 542 views
a jar contain 8 blue blocks 4 red ,9 orange and 4 green ones. About what fraction of the time would you expect to pull out a
1. 1 answer
2. 445 views
what kind of container do you need for a Hogarth arrangement?
1. 1 answer
2. 423 views
I have test procedure to evaluate the clarity of a sodium hydroxide (NaOH) sample that goes like this:Dissolve 10g of NaOH in
1. 2 answers
2. 579 views
I have test procedure to evaluate the clarity of a sodium hydroxide (NaOH) sample that goes like this:Dissolve 10g of NaOH in
1. 6 answers
2. 562 views
To determine the sodium carbonate content & total alkali in NaOH, the following steps were performed:-1) 2.0g of NaOH was
1. 4 answers
2. 950 views
Choose the correct property illustrated by the following statement:If 3m¡ÐZ = 90¨¬, then m¡ÐZ = 30¨¬ Please help know
1. 2 answers
2. 595 views
The perimeter of a quadrilateral is 56. The lengths of three consecutive sides are 9, 13, and 16. What is the length of the
1. 1 answer
2. 434 views
The perimeter of a quadrilateral is 56. The lengths of three consecutive sides are 9, 13, and 16. What is the length of the
1. 1 answer
2. 494 views
i need to define variable, independent variable, control and control group. HELP!
1. 1 answer
2. 425 views
how thick is the bedrock in the inetrior plains and why is it so thick
1. 1 answer
2. 488 views
What are the partial pressures for all gases in 4NH3+O2-->4NO+6H2O that remained at the end, if the reaction took place in a
1. 2 answers
2. 545 views
This question has three paarts:1. Determine the mass of water formed when 14.5L NH3 (at 298K and 1.5 atm) is reacted with 19.3 L
1. 1 answer
2. 408 views
a cold front moves in at noon and in 5 hours, the temperature had dropped 23%. the temperature at 5:00 p.m. was 14%. let x be
1. 2 answers
2. 747 views
A compound,KBrOx, is analyzed and found to contain 52.92% Br by mass. What is the value of x?
1. 2 answers
2. 1,297 views
latoya has 3/4 of a bag of popcorn. If she eats half of the popcorn at the movie, how much does she have left?
1. 3 answers
2. 553 views
A store buys 30 gallons of milk at $1.58 per gallon. To achieve a 20% markup based on cost, what should be the selling price per
1. 1 answer
2. 457 views
49<squareroot of 52<64true or false
1. 3 answers
2. 713 views
49<squareroot of 52<64true or false
1. 1 answer
2. 319 views
give exact and approximate solutions to three decimal placesy^2-12y+36=4
1. 1 answer
2. 380 views
What OB/GYN subspecialties specializes in the use of a hysteroscopy?
1. 1 answer
2. 965 views
A population is normally distributed with a mean of 40 and a standard deviation of 6. For samples of size 10, what is the
1. 1 answer
2. 444 views
At what distance (in m) from a 3.8 mC charge is the electric potential equal to 32 V?(k = 9 x 109 Nm2/C2)
1. 1 answer
2. 371 views
can alcohol go through a visking tubing?
1. 1 answer
2. 338 views
A ball is thrown vertically upward with a speed of +12.0 m/s.How long does the ball take to hit the ground after it reaches its
1. 4 answers
2. 1,313 views
Suppose the stone is thrown at an angle of 32.0° below the horizontal from the same building (h = 49.0 m) as in the example
1. 4 answers
2. 2,333 views
An astronaut takes a space trip to newly discovered palnet X. measurements from earth indicate that: Mx=3Me and Rx=2Re. What is
1. 1 answer
2. 436 views
The helicopter view in the figure below shows two people pulling on a stubborn mule. Assume that F1 is 130 N, and F2 is 65 N.
1. 4 answers
2. 1,519 views
Sunae's group of close friends are going to fifth grade in September. All are going to Belleview Elementary and their homerooms
1. 5 answers
2. 1,511 views
Discuss in detail the healthcare applications of chemical reactions. Which chemical reactions would you consider to be of
1. 1 answer
2. 472 views
I have 2 chemicals, A & B. Note: both do not contain buffer salts.Chemical A expires 1 week later. Chemical B expires next year.
1. 2 answers
2. 594 views
what are the environmental parameters of intertidal zone?
1. 1 answer
2. 294 views
Hi, I have a question on HPLC (high performance liquid chromatography).The procedure says to use a 4.6 x 150mm x 3um column. The
1. 2 answers
2. 523 views
Posted by anne on Friday, October 14, 2011 at 6:30pm.Hi, I have a question on HPLC (high performance liquid chromatography). The
1. 2 answers
2. 534 views
Posted by anne on Friday, October 14, 2011 at 6:30pm.Hi, I have a question on HPLC (high performance liquid chromatography). The
1. 4 answers
2. 448 views
Hi,Please advise on the following: - A procedure for the determination of Impurities A & B in a compound says to use a 4.6 x
1. 1 answer
2. 383 views
Posted by anne on Saturday, October 15, 2011 at 1:03am.Hi, Please advise on the following: - A procedure for the determination
1. 1 answer
2. 408 views
you are 7 miles N & 4 miles W of the cabin how do you get back to the cabin?Bearing?
1. 5 answers
2. 355 views
Please show me the calculation steps.How do I prepare 10%w/w Hydrochloric acid from 37%w/w Hydrochloric acid? The density of
1. 1 answer
2. 479 views
"When Environmental Hazards happen, what should you do?"?
1. 3 answers
2. 312 views
How to prepare 1L of 96% v/v ethanol from 99% v/v ethanol? Can you show me the calculation steps?Thanks.
1. 3 answers
2. 1,397 views
Posted by anne on Wednesday, February 15, 2012 at 3:20pm.How to prepare 1L of 96% v/v ethanol from 99% v/v ethanol? Can you show
1. 1 answer
2. 424 views
You've got a conducting hollow sphere of rradius 0.2 m and a charge of 20 micro culumbs. What is the potential of the sphere at
1. 1 answer
2. 460 views
A conducting hollow sphere of radius. 2m and charge 20 micro coulumbs. What is the potential of the sphere at a distance r from
1. 1 answer
2. 876 views
In an electic field described by E=(20i+60j) V/m, calculate the change in potential for a particle that moves from the origin to
1. 1 answer
2. 357 views
What is the potential halfway between two point charges spaced 1 mm apart if q1=10 micro coulumbs and q2= -5 micro coulumbs?
1. 1 answer
2. 444 views
Two electrostatic point charges of 83 µC and 50 µC exert a repulsive force on each other of 175 N. What is the distance
1. 2 answers
2. 926 views
A balloon rubbed against denim gains a charge of -9 µC. What is the electric force between the balloon and the denim when the
1. 1 answer
2. 1,135 views
Who would have to overcome inertia to move the ball, a golfer or a soccer player?
1. 2 answers
2. 476 views
In the following test for Sulfated Ash, ammonium carbonate solution was added. What is the purpose of adding ammonium carbonate
1. 3 answers
2. 994 views
What is the function of Compressed Air in GC-FID (i.e. Gas Chromatography-Flame Ionization Detector)?
1. 1 answer
2. 436 views
How long can we use a bottle containing anti-bumping granules?Can it be used indefinitely?
1. 3 answers
2. 952 views
What does a thermohygrometer do?
1. 2 answers
2. 680 views
examples of position in healthcare for the four functions of management
1. 1 answer
2. 294 views
I have liquid concentrated HCl (37%w/w)To prepare 100ml of 10g/L HCl as a solvent medium, is it acceptable to just weigh 1g of
1. 3 answers
2. 1,080 views
3x/y - 5
1. 1 answer
2. 201 views
A jet has a speed of 500m/s relative to the air in which it flies and is traveling north. There is a crosswind blowing from west
1. 1 answer
2. 435 views
An object acted on by three forces moves with constant velocity. One force acting on the object is in the positive x direction
1. 4 answers
2. 923 views
Mg and O labhow will the relative number of moles of mg and o be affected if the following procedural errors are made?
1. 3 answers
2. 621 views
a student determined the Ca^2+ ion content of a 100mL sample of calcium-fortified orange juice. After adding 2.0M HCl solution
1. 1 answer
2. 1,124 views
Please be specific!Briefly explain whether each if the following procedural errors would result in a high, low, or an unchanged
1. 4 answers
2. 1,323 views
how do i write out 17260 million1,726,000? is that write or 17,260,000
1. 1 answer
2. 322 views
we decided on a new logo for our brand of t-shirts.It was to be 3 stripes;(1) each stripe could be colored in 1 of 2 different
1. 1 answer
2. 456 views
find the missing number;[8 1 4 5 7 ] { 81 4 25 36 ? }
1. 1 answer
2. 354 views
3 boys and 3 girls,how many boy - girl pairs can be formed ?
1. 5 answers
2. 908 views
Stephanie has $67 to spend at a store. The store currently has a sale where the sale price is 23% off the marked price. What is
1. 2 answers
2. 1,023 views
write a 300 words reflective journal expressing the view on class activities and the own personal comments.
1. 1 answer
2. 337 views

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