How do you change a fraction to a ratio?
Q. I have homework and i have to change a fraction to a ratio. My mom says it already is a ratio but my teacher said a ratio is like 3:1. Even easier what is 5/24 as a ratio.
Asked by Volleyball Champ - Fri Nov 27 19:43:29 2009 - Mathematics - 6 Answers - Comments

A. **It would be 5:24**
Answered by BOB - Fri Nov 27 19:50:32 2009

What is the ratio of oxygen to fluorine?
Q. The ratio of oxygen to nitrogen by mass in NO2 is 2.29. The ratio of fluorine to nitrogen by mass in NF3 is 4.07. Find the ratio of oxygen to fluorine by mass in OF3 . I know you can solve the ratio problem as follows: 16g / 38g = 0.42 or 1 : 2.38 but I'm sure the author wants this solved using the initial ratio info. How do you do that? The answer in the back of the book is: 0.423.
Asked by Aaron F - Mon Dec 26 18:52:41 2011 - Chemistry - 3 Answers - Comments

A. Let's say you were John Dalton and didn't know the atomic weights of N, O or F which is how the question is posed. Let At Wts be m N, m O and m F NO2 O:N [2xm O]/m N = 2.29 hence m O = [2.29/2]m N = 1.145m N NF3 3xm F/m N = 4.07 hence m F = [4.07/3]m N m F = 1.357m N OF3 O:F m O/3xm F = [1.145]m N/[3x1.357]m N = 0.281 You can confirm that this is the correct answer by substituting m N = 14.0, m O =16.0, m F =19.0 (see John's answer) 16.0/[3x19.0] = 0.281 Conclusion the answer in the back of the book is incorrect. This is the basis of Proust's Law of Multiple proportions. (Neutral OF3 incidentally does not exist: it would have an odd number of valence electrons.) (the prof)
Answered by FeButterfly - Tue Dec 27 01:46:20 2011

How do you get the aspect ratio right when connecting a computer to a PC?
Q. I have an HP laptop that i am trying to connect to a RCA 40" tv (L40FHD41) but I can't get the ratio right. Before, I have been able to just plug it in with a VGA cable and it would work fine, but sometimes it messes up the resolution on my laptop and the image on the television is not centered and is cut-off. Whenever i change the ratio, the tv either says "unsupported" or the image is off center. Any ideas on how to get the ratios to match up?
Asked by Jake - Wed Sep 23 23:55:17 2009 - Home Theater - 2 Answers - Comments

A. This is an easy fix. All TVs with VGA input have a special menu option called "PC sync" or simply 'sync". use it to adjust the sync between the PC and the TV and to center your picture. Rebooting your PC with the TV on will usually allow it to figure out the best resolution to connect. Then use sync to fix the cut-off issue.
Answered by TV guy - Thu Sep 24 11:11:07 2009

What ratio of water to bleach is used to clean petri dishes that have bacteria growing in them?
Q. i am doing a sci fair project and i need to see how to disinfect petri dishes. i know that i need to use bleach but i don't know what ratio of bleach to water to use. 10 points to best answer = )
Asked by Chocolate Cow - Fri Nov 13 18:34:18 2009 - Biology - 1 Answers - Comments

A. It would help to know what kinds of bacteria you are trying to kill. For example, the bacteria Escherichia coli O157:H7 (E. coli) and Staphylococcus aureus (Staph.) both die using 1 tablespoon of Clorox r Regular-Bleach per gallon of water. The recommended route is to incinerate used petri dishes. However, for disinfection of these nonporous surfaces without any specifics about desired organism destruction, I would up the dosage and recommend a 10% bleach solution with a good soaking for 30 minutes. This is medical grade disinfectant which kills almost all bacteria, fungi, viruses, and protozoa. NOTE: Bleach solutions must be prepared daily. They lose their strength after 24 hours. Anytime the odor of chlorine is not present, discard the… [cont.]
Answered by - Fri Nov 13 19:03:41 2009

Is ratio analysis needed for a business to continue and be solvent?
Q. Is ratio analysis needed for a business to continue and be solvent? I realize it's not an exact science, but why is it necessary, or is it?
Asked by Steven M - Sat Feb 27 08:57:43 2010 - Other - Business & Finance - 2 Answers - Comments

A. Ratio analysis is not required. I know many businesses whose owners have no idea what ratio analysis even is ! LOL. But they are still continuing and are still solvent. However, ratio analysis is a useful accounting tool (that should be) used by management to evaluate the company's performance from year to year.
Answered by capwest5a - Sat Feb 27 11:40:06 2010

How do i convert a decimal into a ratio?
Q. How do I convert a decimal into a ratio, I am calculating the acid-test ratio of a company and my result comes as a decimal, eg, 0.76. How do I turn this into a ratio?
Asked by Scooby Who - Sat Apr 24 20:04:40 2010 - Mathematics - 3 Answers - Comments

A. Well, simple. Multiply it by 100/100, using the multiplicative identity property. = .76(100)/100 = 76/100 You should try to simplify further just in case. My teacher gives no credit to those who don't simplify. 76/100 = 38/50 = 19/25
Answered by allen chin - Sat Apr 24 20:10:37 2010

How do you determine the ratio for heterozygous and homozygous dominant or recesive traits?
Q. 10th Grade Biology, my text book says o this is the ratio for this and this is the ratio for this but it doesnt explain how to figure out the ratio myself. Can anyone please help explain how you determine the ratios for the heterozygous and homozygous stuff?
Asked by - Tue Feb 2 16:39:57 2010 - Biology - 2 Answers - Comments

A. Ratios are nothing more than fractions withthe denominator removed IF the denominators are all the same, so if 1/4 are BB, 2/4 are Bb, and 1/4 are bb, the ratio is 1/4 : 2/4 : 1/4 or 1:2:1. If 7/16 are one phenotype and 9/16 are another, the final ratio is 7 : 9. If there are 12 offspring and 6 are Gg and 6 are gg, then the fnal ratio is 6/12 : 6/12 or 6:6, which reduces to 1:1.
Answered by Asst Prof - Tue Feb 2 17:13:23 2010

What is the ratio F1:F2 of the gravitational forces exerted on the star by the two planets?
Q. Consider two planets of mass m and 2m, orbiting the same star in circular orbits. THe more massive planet is 8.6 times as far from the star as the less massive one. What is the ratio F1:F2 of the gravitational forces exerted on the star by the two planets? What is the radio v1:v2 of the speeds of the two planets? What is the radio T1:T2 of the orbital periods of the two planets?
Asked by XzoeyX - Sun Mar 30 12:38:57 2008 - Physics - 1 Answers - Comments

A. This homework is asking you to apply Newton's law of gravitation and Kepler's laws of motion. F = Gm1m2/r2 V(orbit) = (GM/r) T = 2pr/V
Answered by Engineer-Poet - Sun Mar 30 13:21:52 2008

What is the ratio of a circumference and diameter if the radius of any circle was increased by 5 units?
Q. My son is doing a homework questions that he's stuck on for Pre-IB math. The question is as follows: if the radius of a circle is increased by 5 units, what is the ratio of the new circumference to the new diameter? My son is doing homework questions for pre-IB math in the states, and he's stuck on a problem. The question is as follows: If the radius of a circle is increased by 5 units what is the ratio of the new circumference to the new diameter?
Asked by Geberdia - Sun Feb 8 16:08:53 2009 - Mathematics - 2 Answers - Comments

A. The ratio would stay the same. Pi IS the number which stems from the ratio of the circumference to the diameter of all circles. Draw a perfect circle and measure the length of the diameter with a piece of string.Take the string and mark a place on the circle. Put an end of the string there. Do your best to wrap the length of string on the circle, and place a mark where the string stops. Start the string at that ending point, and then again for a total of 3 times. The string will go around the circle 3 times + a little extra part of the circle.(around 0.141592)This is pi: 3 diameters plus the part left over = 3.141592...(deciamal is non-repeating but continues infinitely). No matter what the size of circle is, the diameter will always fit &q [cont.]
Answered by MLR - Sun Feb 15 21:09:54 2009

What is the ratio of the energies of yellow light of 575 nm to UV light of 261 nm?
Q. What is the ratio of the energies of yellow light of 575 nm to UV light of 261 nm?
Asked by Susan R - Sat Nov 17 01:07:47 2007 - Chemistry - 3 Answers - Comments

A. First you have to find the energies of each. use E=hc/l E=energy in Joules h= Planck's constant (6.63x10^-34 J s) c=Speed of light (3.0x10^8ms-1) l=wavelength (m) E=6.63x10^-34 x 3.0x10^8/5.75x10^-7 E=3.46x10^-19 J E=2.16 e V (yellow light) E=6.63x10^-34 x 3.0x10^8/2.61x10^-7 E=7.62x10^-19 J E=4.76 e V (UV) ratio= 4.76/2.16 =2.20
Answered by Airbender - Sat Nov 17 02:13:14 2007

What is the ratio of self sufficient working people vs those who do not work?
Q. Those who do not work are retired, welfare, professional welfare breeders, unemployed, disabled, and any other category. I would guess it's around a one to five ratio, whereas one person supports 5. Does anyone have some links?
Asked by CaptainFreon - Fri Nov 13 19:56:37 2009 - Politics - 5 Answers - Comments

A. 47% work for the government (in some way or another), and 50% of those that are left pay no income tax, so 1-3. Sadly this includes service people, retires, disabled, government employees, politicians, and those on the dole. Numbers are numbers & whining about who should/needs to be there & who doesn't is moot. They are there. Not very good at math, are we? Under pressure we cave, and the collapse is near.
Answered by jim s - Fri Nov 13 20:46:26 2009

How does the ratio of H to O atoms in starch compare with the ratio in double sugars?
Q. ??? the ratio of double sugars is 2:1 i think but what is the ratio of starch?
Asked by - Wed Oct 5 19:21:04 2011 - Biology - 1 Answers - Comments

A. It's still 2:1. Monosaccharides: The basic formula (CH2O) Disaccharides: These are double sugars with the formula C12H22O11. Polysaccharides: The basic formula is (C6H10O5)n . Notice they all have the 2:1 ratio..
Answered by ATP-Man - Wed Oct 5 20:31:01 2011

What mass ratio of sugar to water is required to raise the boiling point of a sugar/water solution at 145 C?
Q. Hard candy is made from very hot solutions of sugar and water with small amounts of added flavorings. In a typical preparation, the boiling point of the sugar/water mixture reaches 145 degrees C. What mass ratio of sugar (C12H22O11) to water is required to raise the boiling point of a sugar/water solution at 145 degrees C?
Asked by - Fri Apr 8 03:27:17 2011 - Chemistry - 2 Answers - Comments

A. the elevation of temperature by mole of a non electrolyte substance as saccharose is dt= K *osmolarity (here osmolarity = molarity) k=0.512 C/Osmole dt = 45 = 0.512 * osmolarity molarity= 45/0.512=87.9 mole/L the mass of saccharose is 12*12+22*1+11*176=342g 87.9 moles correspond to a mass of 342*87.9=300058g= 30.058kg so ,streactly speaking as 1L of water =1 kg, you should mix sugar/water=30.0058
Answered by maussy - Fri Apr 8 04:10:52 2011

What is the ratio of venomous snakes to non venomous snakes?
Q. My friends and i had an arguement on the Ratio of venomous snakes to non venomous snakes. Please what is the ratio? Which is more
Asked by Timdel - Thu Sep 6 08:16:18 2007 - Reptiles - 1 Answers - Comments

A. There are about 2700 known species of snake. About 375 of those are venomous and considered deadly to humans. That means about 14% of snakes are dangerous to people. 86% are non-venomous. So I guess the ratio would be 1.4/10 In any case there are many more harmless snakes than there are dangerous ones.
Answered by RG - Thu Sep 6 08:53:21 2007

What financial information does the current ratio measure?
Q. How has the current ratio relate to the other liquidity ratios? Which financial ratios would you use - and how - to determine whether a company will be able to meet its commercial bank loan payments?
Asked by kitsune12 - Thu Jan 11 01:15:56 2007 - Other - Business & Finance - 1 Answers - Comments

A. current ratio measures your current debt to current assets, in other words how able you would be to pay off you debts if you had to right now. current ratio includes cash so this would tell a bank if you have cash to pay them with
Answered by **wishin** - Thu Jan 11 01:25:45 2007

Ratio...?
Q. [Two non-relativistic particles, an electron of mass me and a proton of mass Mp, have equal de Broglie wavelengths. What is the ratio of the kinetic energy of the electron to that of the proton?]
Asked by - Thu Oct 21 23:19:50 2010 - Physics - 2 Answers - Comments

What ratio of Portland cement to gravel do I use for my footing?
Q. I'll be hand mixing my own cement for a footing and slab for an extended room to my home near Anchorage, Alaska. What is the proper ratio of Portland cement to gravel for my footing?
Asked by Ron C - Mon Aug 23 22:15:17 2010 - Do It Yourself (DIY) - 1 Answers - Comments

A. The ratio in Alberta is 1-2-3. That is, 1 spade of Portland cement, 2 spades of sand, 3 spades of washed, crushed rock. Some people are now substituting one or even two spades of medium-fine tire crumble for the crushed rock. They claim the crumble gives the cured concrete greater resistance to cracking. Depending on what you're building on the footing and on how massive the footing is, you'll also need at least 2 lengths of re-bar.
Answered by - Mon Aug 23 22:22:46 2010

What is the ratio of the net power emitted by object 1 to that radiated by object 2?
Q. Two identical objects are placed in a room at 21C. Object 1 has a temperature of 96 C and object 2 has a temperature of 30C. What is the ratio of the net power emitted by object 1 to that radiated by object 2?
Asked by - Mon Jun 14 16:34:58 2010 - Physics - 1 Answers - Comments

A. Stephan-Boltzmann's Law states that the power radiated by an object is proportional to the fourth root of its absolute temperature. So, the net power radiated by an object is proportional to (T^4-Tenvironment^4). where T is its temperature.
Answered by Chicken God - Mon Jun 14 16:38:59 2010

How to decide the ratio of solvent to be used in liquid liquid extraction?
Q. How is it decided that ratio of solvent should be 1:1 or double or triple to the solution to be extracted in liquid liquid extraction. If I have to extract 5mg Naphthalene from 10ml water medium how would I know that 1:1 ratio is enough for extracting all Naphthalene out from medium if Hexane is my solvent?
Asked by rif - Mon Sep 22 03:17:56 2008 - Chemistry - 2 Answers - Comments

A. To determine the required ratio one needs to establish the distribution ratio of the naphthalene between the organic phase (hexane) and the aqueous phase (water). The napthalene will more than likely be very much more soluble in the hexane than in the water. To measure this ratio take a measured volume of a naphthalene solution in water and add an equal volume of hexane. Shake the two liquids vigorously for five minutes then allow the two liquids to separate into two distinct layers.The hexane has a density of about 0,66 g/ cm^3 so it will form the top layer. Measure the concentration of naphthalene in both liquids. There should be a trace of naphthalene in the water and a much higher concentration in the hexane. The ratio of the… [cont.]
Answered by Mike T - Mon Sep 22 04:15:14 2008

How do I find the area ratio when I have the length ratio?
Q. I know no one ever answers these but I have an exam tommorrow and I really need help. The question is: The length ratio between two similar objects is 4:7. What is the area ratio between the solids? What is the volume ratio between the solids?
Asked by RULE BRITANNIA - Sun Jun 5 11:29:12 2011 - Mathematics - 2 Answers - Comments

A. I think you just square the 4 and the 7 to get the area ratio. So: 16: 49. And cube the 4 and the 7 to get the volume ratio. So: 64: 343. Sorry if i was wrong :/
Answered by - Sun Jun 5 11:34:50 2011