# Posts by ann

Total # Posts: 1,465

**Science**

I am doing a 3rd grade science project on the Sun. I have to create a "visual". I want to compare the size of the earth to the size of the sun. I found that you could put 1,000,000 earths inside the Sun. I would like to fill a container [representing the Sun] with ...

**Chemistry**

Is thalidomide a cis isomer or a trans isomers? Thanks

**Chemistry**

Is thalidomide a cis isomer or a trans isomers? Thanks

**Chemistry**

Is thalidomide a cis isomer or a trans isomers? Thanks

**pop culture and the arts**

I need to give two examples that illustrate the relationship between art and American culture.

**Chemistry**

If the molar volume of a gas is 22.42L, what volume will 39.67 moles of this gas have. My answer, (22.42)(39.67) = 889.4L IS this right? Thanks.

**math**

what is the anwser to 5 hundreds and 12 ten

**math**

the anwser is 620

**math**

what number has 5 hundreds and 12 tens

**Algebra 1**

Two sides of a triangle have the same length. The remaining side is one third as long as each of the other sides. If the perimeter of the triangle is 315 cm, what is the length of each side?

**Algebra 1**

Two sides of a triangle have the same length. The remaining side is one third as long as each of the other sides. If the perimeter of the triangle is 315 cm, what is the length of each side?

**chemistry**

What does sulfur water, sodium bicarbonate and citric acid yield? Is the sulfur smell H2S and/or in any SO2 given off?

**Physics**

Driving in your car with a constant speed of 12 m s you encounter a bump in the road that has a circular cross-section. The radius of curvature of the bump is 35.2 m. At what speed must you go over the bump if people in your car are to feel "weightless"?

**English**

The procedure applies to the assigning of expiry dates for milk products. or The procedure applies to the assignment of expiry dates for milk products. Which is correct?

**English**

1)as per the guidelines.... 2)per the guidelines... Which is correct?

**physics**

A ventilation fan has blades 0.25 m in radius rotating at 20rpm. What is the tangential speed of each blade tip? i don't understand how to do tangential speed.

**statistics**

no uniformly distribution

**statistics**

the scheduled commuting time on Long Island Rail Road from Glen Cove to New York is 65 minutes. Suppose that the actual commuting time is uniformly distributed between 64 and 74 minutes. What is the probability that the commuting time will be a) less than 70 minutes B) between...

**Finance**

-a: The dividend yield for AT&T is 3.6%; for Boeing it is 1.6%; and for Johnson & Johnson it is 2.5%. -b: The difference is the expected earnings and dividend growth, with AT&T likely having the lowest expected growth and Boeing the highest expected growth. -c: P/E for Boeing...

**algebra**

function f(x)=2x^2-3x f(0)= f(-1)= f(2)=

**probability and statistics**

Is this right? and how can I break it down if needed? A factory’s worker productivity is normally distributed. One worker produces an average of 75 units per day with a standard deviation of 20. Another worker produces at an average rate of 65 per day with a standard ...

**statistics**

a study of the time spent shopping in a supermarket for a market basket of 20 specific items showed an approximately uniform distribution between 20 minutes and 40 minutes. What is the probability that the shopping time will be a) between 25 and 30 minutes? b) less than 35 ...

**Math (Reiny)**

Reiny, Thank you so very much!!!

**Math (Reiny)**

Regarding my question below, when the question talks about digits 0-7 do we include the 0. In other words, are the possible digits 0,1,2,3,4,5,6,7 or 1,2,3,4,5,6,7? Thanks again for your help. How many odd four-digit numbers, all of the digit different can be formed from the ...

**Math**

Reiny, Thanks but I'm stumped on part 3 of the explanation for the first case. We have used up 2 digits when we move on to the second space but didn't we start with 8 digits (0-7) so I don't understand why we aren't left with 6 choices for the second spot (8-2...

**Math**

How many odd four-digit numbers, all of the digit different can be formed from the digits 0 to 7, if there must be a 4 in the number? My Answer: There are four options for the last digit (1, 3, 5, or 7). One of the other three digits only has 1 option (for the 4). One of the ...

**algebra**

4x+9y=52 x=35-5y

**grade 9 science biology**

how can be measure co2 in atmosphere

**communication**

selina sanchez, together with her colleagues, presents a competitive market research model for other businesses to follow.

**Psychology**

I'll look. Thank You.

**Psychology**

Thank you Ms.Sue. I do understand that, however I'm looking for the technical term. I thought it was spontaneous recovery but it doesn't seem to be a conditioned and uncoditioned response/stimuli. Can you please help me? Thanks.

**Psychology**

Your three little brothers-John,Peter and James get the same gift for Christmas-an ice fishing pole. Your father is curious about how children learn and decides he will teach each of them using different means. With John, he gives him a verbal lecture. With peter, he ...

**History**

How and why did Eisenhower use the politics of consensus with Congress to achieve compromise

**Physics**

A beam of particles have a measured life time of 1.5 x 10-8 s when traveling 2.0 x 108 m/s. What would their lifetime be if they were at rest? My Answer: tm= tp/√(1-(v2/c2)) (1.5*10-8) = tp/√(1-((2*108)2/(3*108)2)) (1.5*10-8) = tp/√(1-((4*1016)/(9*1016)) (1.5...

**algebra**

Two factors, each with no digit greater than 5, have a product of 16,848. What is the largest possible 3-digit factor satisfying these conditions?

**algebra**

How many cubic feet are in the volume of a round swimming pool which is 16 feet in diameter and 4 feet deep throughout? Express your answer in terms of pi.

**Algebra**

The faces on a regular octahedral die are numbered one through eight. What is the probability of rolling 3 sixes in succession? Express your answer as a common fraction.

**Physics**

A person places the speakers 4.0 m apart and connects a signal generator to both speakers that produces a single and consistent tone. (constant wavelength and frequency) He then walks to a point that is 2.0 m from one speaker and 2.3 m from the other. At that point he notices ...

**Physics**

A person places the speakers 4.0 m apart and connects a signal generator to both speakers that produces a single and consistent tone. (constant wavelength and frequency) He then walks to a point that is 2.0 m from one speaker and 2.3 m from the other. At that point he notices ...

**Geometry**

½ m ےABC =½ m ےPQR

**Business**

Based on this financial info where a company's Beta Year = 2008, the Company's commons stock = 0.85, the Risk-Free Rate of Return = 5%, and the Market Risk Premium = 6%. Use the dividend growth model to calculate the Company's Common Stock in 2008. Stock 1 = 1.5, ...

**Pre-Calc**

Can someone please be kind and show me the steps on this? Thanks Find the equation of the circle centered at the origin in the uv-plane that has twice the circumference of the circle whose equation equals (u-5)^2 + y^2 =9

**chemm**

When a reaction mixture with a total volume of 1180 mL that is 0.0110 M aqueous NaCl was stoichiometrically produced as per the balanced equation, what volume (mL) of 0.0116 M aqueous Ca2+ was required? 3 CaCl2(aq) + 2 Na3PO4(aq) → Ca3(PO4)2(s) + 6 NaCl(aq) Molar Mass (g...

**chemistry**

If 840 mL of 0.0140 M aqueous Al3+ and 500 mL of 0.0680 M aqueous Br- are reacted, what mass (g) of Br- is produced? Al2(SO4)3(aq) + 3 CaBr2(aq) → 2 AlBr3(aq) + 3 CaSO4(s) Molar Mass (g) Br- 79.904 Al3+ 26.982 Br- 79.904 Molar Volume (L) 22.400 at STP Gas Constant 0.0821

**Chemistry**

Does HCl form a precipitate with NaClO?

**physics**

To balance a 40.8-kg automobile tire and wheel, a mechanic must place a 41.7-g lead weight 25.0 cm from the center of the wheel. When the wheel is balanced, its center of mass is exactly at the center of the wheel. How far from the center of the wheel was its center of mass ...

**Pre-Calculus**

Thank you a 1000 times Reiny!

**Pre-Calculus**

It is well known that superman can withstand as much as 3 grams of Green Kryptonite indefinitely. However, exposure to more than 3 grams for more than 13 hours is fatal. Assume that Kryptonite decays at an hourly rate of 5.35% If superman is trapped in a room with 6 grams of ...

**PRE-CALC**

A drug is eliminated from the body through urine. Suppose that for an initial dose of 10 milligrams, the amount A (t) in the body t hours later is given by A(t) = 10(0.8) t a) Estimate the amount of the drug in the body 8 hours after the initial dose. b) What percent of the ...

**Pre-Calc**

Amount after time t A (t) = yobt Where: yo = starting amount b = growth constant (percent remaining) t = number of time units It is well known that superman can withstand as much as 3 grams of Green Kryptonite indefinitely. However, exposure to more than 3 grams for more than ...

**thefacility**

003048

**the staff**

003049

**PHYSICS**

Thank YOu!

**PHYSICS**

1)A picture of width 40 cm weighing 40N hangs from a nail by means of flexible wire attached to the sides of the picture frame. The midpoint of the wire passes over the nail which is 3 cm higher than the points where the wire is attached to the frame. Find the tension of the ...

**Chemistry**

A solution that has an osmotic pressure greater than that of red blood cells is called?

**Chemistry**

What is the concentration, in w/w%, of a solution prepared from 50.0 grams NaCl and 150.0 grams of water? I think it would be 25.0%, but I'm struggling with these new concentration calculations.

**college, teaching**

obstacles in the first year of teaching

**Chemistry**

Sodium oxide, reacts with water to give NaOH. A) Write a balance equation? B)What is the pH of the solution prepared by allowing 1.55 g of Na2O to react with 500.0 ml of water? (assume there is no volume change) C) How many milliliters of 0.0100M HCL are needed to neutralize ...

**Verb tense**

Dinnie does pay bills online each month.

**health,safety and nutrition**

Why health, safety and nutrition strategies are important ti identify and practice in an early childhood education programs.

**English**

The packet of biscuits has passed its expiry date or The packet of biscuits has past its expiry date. Or both sentences correct?

**English**

There is a host of reasons... or There are a host of reasons.... Which is correct?

**physics**

A person places the speakers 4.0 m apart and connects a signal generator to both speakers that produces a single and consistent tone. (constant wavelength and frequency) He then walks to a point that is 2.0 m from one speaker and 2.3 m from the other. At that point he notices ...

**Chemistry-Please Help!**

I have these 5 chemical equations and I keep getting the same 1:1 ratio on all of them. I must be doing something wrong! KCL + NaNO3 = KNO3 + NaCl HNO3 + KOH = H2O + KNO3 H2O + SO3 = H2SO4 4Na + O2 = 2Na2O 2NO2 = 2NO + O2

**Chemistry**

What would be the molecular ratio of the following equation? 2NO2 = 2NO + O2

**algebra**

write the slope-intercept equation for the line that passes through(4,3) and has slope 5/4.

**FIT**

Joe Nautilus has $120,000 and wants to retire. What return must his money earn so he may receive annual benefits of $20,000 for the next 14 years?

**Statistics**

What type of data must you collect to conduct a t-test? Why?

**Algebra**

Suppose you are at the gas station filling your tank with gas. The function C(g) represents the cost C of filling up the gas tank with g gallons. Given the equation: C(g) = (3.5)g a) Find C(2) b) Find C(5)

**Physics**

Also it's not 1800, it's 1/800 so it would be: .046kg * 44 = 2.024 2.024/(1/800) It should equal = 1619.2 Check your answer but that should be it, especially if they're asking you in units of N

**Physics**

Also it's not 1800, it's 1/800

**English**

With reference to an earlier question:- The liquid is to be scooped at a quarter of the depth of the container it is in. Hence the first sentence is correct? Or is there a better way of phrasing? The liquid should be scooped at a quarter depth of the container? Posted by ann ...

**English**

1)Please advise us on the status of our application. 2)Please advise the status of our application. Which sentence is correct?

**English**

The liquid is to be scooped at a quarter of the depth of the container holding it is in. Hence the first sentence is correct? Or is there a better way of phrasing?

**English**

The liquid should be scooped at a quarter depth. or The liquid should be scooped at a quarter depths. Which is correct?

**English**

"Your prompt action in providing the information by tomorrow would be appreciated." Is the above sentence correct?

**English**

Which sentence is correct? 1) Please provide the shelf life information on the following biscuits: - or 2) Please provide the shelf life information of the following biscuits: -

**English**

Is the following sentence correct? Please provide us with the requisite information on the product.

**English**

Please expedite in providing all necessary documents. Is this sentence grammatically correct?

**AED 201**

I think that is where I am confused to. It just says the first technological event in education and then the second for each time period. I have found one website that helped, im not sure if it is the correct information, but it only went up until 2000. I am still looking for ...

**AED 201**

I am looking for information on the use of technology in school. I need the 1st and 2nd event from 1980, 1990 and 2000. Ive been searching since yesterday. I do not want the answers, just pointed in the right direction. I guess im not searching right or something Thank you.

**History**

In their reporting of elections, the media tend to place cendidates and issues in the context of

**Math**

Explain how the digit 1 can have a different values in 111

**math**

which decimal has the highest number 4.1, 6.3, 0.31

**Chemistry**

Posted by ann on Sunday, October 17, 2010 at 4:26am. In melting point determination, why shouldn't a substance be re-melted? (i.e. why should we not re-melt a substance that has previously been melted in a melting point tube?)

**Chemistry**

In melting point determination, why shouldn't a substance be re-melted? (i.e. why should we not re-melt a substance that has previously been melted in a melting point tube?)

**English**

1) Minimize versus minimise. Which is UK English & which is US English? 2) After cleaning, all waste must be properly disposed of. Is this sentence acceptable?

**Comm/155**

I am trying to write a brief paragraph using five adverbs and five adjectives in describing my experience with credit and credit cards?

**chemistry**

A water containing 1x10^-4 mol CO2/L and having an alkalinity of 2.5x10^-4 eq/L has a pH of 6.7. The pH is to be raised to pH 8.3 with NaOH. How many moles of NaOH per liter of water are needed for this pH adjustment? (pK1=6.3 and pK2=10.3)

**Chemistry**

Is butyl paraben light sensitive?

**computers**

James was traveling for his job. The internet card provided by his company was not working and he had an important project due that day. James was in a small town about an hour away from the nearest internet kiosk, so he decided to drive around a nearby suburb to see if he ...

**accounting**

general ledger entry: sold $700 of merchandise (that had cost $220) on credit to Sam's Company.

**social studies**

what role did geography play in the economic success of new york

**math**

In this problem the letters x and y are each one digit numbers. Compare x+y O 19? Do I put any number for x and y ? please help. Your answer was no but how do I do this problem? I'm sorry, I mean <,>,or =. Thank You for your help.

**math**

In this problem the letters x and y are each one digit numbers. Compare x+y O 19? Do I put any number for x and y ? please help. Your answer was no but how do I do this problem?

**math**

In this problem the letters x and y are each one digit numbers. Compare x+y O 19? Do I put any number for x and y ? please help.

**math**

In this problem the letters x and y are each one digit numbers. Compare x+y O 19? Do I put any number for x and y ?

**physics**

A person leans over the side of a deep well and drops a stone that falls freely. After 1.0s she hears the splash of the stone striking the water at the bottom of the well. How deep is the well?

**AP Chemistry**

4 is correct

**math**

julie is thinking of an even number between 12 and 29 with digits whose difference is 7? what is the number?