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Simple chemistry problem that I just can't figure out?!? Its getting really frustrating. Rutherford collected helium atoms in his container for a year. He found that during this time, 1 gram of radium produced about 7.7 x 10^-6 grams of helium. He estimated that during this same time 1.16 x 10^18 alpha particles were emitted. If each alpha particle produces one helium atom, what is the weight in grams of a single helium atom? Could you also (or at least) write the formula for finding it, please? Combustion Analysis Problem? PROBLEM: Polystyrene like other plastics and like diamonds and silica is a network solid. Carbon and Hydrogen atoms are connected by huge networks of covalent bonds. it isn't made up of small molecules so it dousn't really have a molar mass, but like any compound, polystyrene's atoms are combined in definite proportions. to learn more about the composition of polystyrene, combustion analysis was performed on a 2.57 g sample. in combustion analysis, 8.67 g of carmbon dioxide and 1.77g of water were produced. A. How many moles of carbon were present in the original sample of polystyrene? B. How many moles of hydrogen were present in the original sample? C. What is the empirical formula of polystyrene? Excel help with macro or formula? I have a spreadsheet with the date running from 1st jan 05 to 31st june 10 in one column. In the adjacent column there is a number for that day. Now what i need to do is delete every single row apart from the last day of the week. Now what is difficult is that 1.It is business related it only has mon-fri and 2. Occasionally there was a holiday, therefore friday does not exist, therefore must use the thursday for that week. So what i need excel to do is to look for is friday, but if friday does not exist then to take thursday. Then copy those rows out, or delete the other ones or similar. What i;m doing at the moment is highlighting the cells then deleting them 4 at a time or so. I have to do this for about 35 sheets, so a shortcut would be good. Any ideas for a macro or something? I really need help with this chemistry problem PLEASE? Its getting really frustrating. Rutherford collected helium atoms in his container for a year. He found that during this time, 1 gram of radium produced about 7.7 x 10^-6 grams of helium. He estimated that during this same time 1.16 x 10^18 alpha particles were emitted. If each alpha particle produces one helium atom, what is the weight in grams of a single helium atom? Could you also (or at least) write the formula for finding it, please? is it alright to let a 11 month old baby bottle feed herself to sleep, in her crib, with formula milk? the reason l ask is concern for her oral hygiene. She has sprouted two bottom front baby teeth and 2 upper ones are sprouting now. The milk formula does contain sugar l think. l will start to clean her teeth with a clean gauze soon (any video sites showing you how to use it to clean baby's teeth would be great) she almost always falls asleep drinking the formula milk herself. Lastly, when should a baby toothbrush be introduced and l assume no toothpaste is used? thanks in advance cot(thetapi/2-u) = tan u is a? A. Half-angle formula B. Co-terminal formula C. Co-function formula D. Periodic formula my GPA in Japan or what is their GPA formula? ok, let me explain first, for example this is how we calculate GPA in my country: simply A+B+C+D/total number of grades, where A=5, B=4, C=3 and D=2, so according to this my GPA is 3.41 but somehow i can't put that in Japanese system, it doesn't fit or i get it wrong?? any clues? thanks... science help please help me thank you so much ill rate you best i promise thanks so much? 1. Which of the following statements helps explain why there are millions of carbon compounds? A) Carbon has four valence electrons. B) Carbon atoms form bonds with other carbon atoms. C) Carbon atoms can form single, double, and triple bonds. D) all of the above 2. Which of the following statements is true? A) Organic compounds always contain carbon and hydrogen. B) Organic compounds contain only carbon and hydrogen. C) Organic compounds are produced only in organisms. D) About 10 percent of all known compounds are organic compounds. 3. The carbon atoms in a hydrocarbon can NOT be arranged in A) straight chains. B) branched chains. C) rings. D) a network solid. 4. Which of the following compounds is most reactive? A) ethane B) ethene C) ethyne D) They are all equally reactive. 5. Organic compounds contain A) potassium and diamond. B) carbon and hydrogen. C) isomers and ionic bonds. D) fluorine and neon. 6. An organic compound that contains ONLY hydrogen and carbon is called a A) carbogen. B) isomer. C) carbate. D) hydrocarbon. 7. What type of bonds are found in a saturated hydrocarbon? A) single bonds B) double bonds C) triple bonds D) quadruple bonds 8. What factors determine the properties of a hydrocarbon? A) the number of carbon atoms B) the mass of the atoms C) how the atoms are arranged D) both a and c are correct 9. The more carbon atoms, A) the lower the boiling point is. B) the lower the mass is. C) the higher the boiling point is. D) weaker the bonds are. 10. __________ are compounds with the same molecular formula but different structural formulas. A) Straight chains B) Isomers C) Hydrocarbons D) Rings Help with this math problem? Solving formulas (literal equations) a) Solve for P in terms of Q if 5P - 3Q = P + Q + 16 b) Solve for a in terms of b and c 2ab - 3b = b + 2c Heron's Formula Solve? use Heron’s formula to solve if you know the three sides of a triangle. Side A= 13, Side B=23, Side C=16. cot(pi/2-u) =tan u is a? A. half-angle formula B. co-terminal formula C. co-function formula D. periodic formula does active white L-glutathione (USA formula) really works? hello! i want to know about your personal experience about this glutathione... Does it really works? I I got mine from e-bay...how many months have you seen the effects? And what is the most effective brand of glutathione? How can I make my Excel spreadsheet return 9/2009 to (current date) in the same cell? I put in this formula, =9/2009 to TODAY(), but it returned: 9/2009 to 40388 I think that it just doesn't know how to format the date... Any suggestions would be appreciated! Prove this formula works. Help? Jacques concluded that tus sums of the first (n) even numbers is n(n+1) so, 2+4+6...+2n = n(n+1) Jaques mother observed that his equation is an example of an arithmetic series and that the sum of the terms of an arithmatic series is determined as follows: t1 + t2+ t3 + ... +tn = [n(t1 + tn)] / 2 Prove Jacques conjucture using this formula. Is the proof an example of Inductive reasoning or deductive reasoning? Explain. A math equation that proves Liberals Love America more than Conservatives? A scientist developed a math equation that took up 429,249,492 pages of computer paper that proves Liberals love America more than USA Conservatives. His work was not done by surveying Liberals or Conservatives, but by psychoanalysis and getting into the DNA of Liberals and Conservatives.... He had to take the area of trapezoids, do very complex calculus and differential equations, very very very complex statistical math using Chi-Squared, tons of distribution tables....and there was some trig involved. he had to take the the cosine of a tangent of an arc-sine and apply the pathagorean theorem 3201 times and do the quadratic formula 5,304 times in this equation..... And he put needles on his fingers to make sure he hit EXACTLY the right buttons on the calculator so no key punch errors.... and he had to do square-roots, cube-roots, even use imaginary numbers and pi and e, and the golden ratio... all this math he used...to get his final answers that Liberals love America more than Conservatives. Do you agree with his mathematical finding? oh and he had to use geometric series and find upper limits, and also 51,549 times, numerators and denominators cancelled out saving even more time can you explain me about the distance formula in trigonometry? please keep in mind that i have begun maths with trigonometry and have no knowledge of high fi topics like vectors,etc. it is not about polar or something but about a standard circle whose radius is 1unit. I just need info of distance formula between two points on a graph paper. Formula Boats - Renowned Manufacturer of PowerBoatsManufacturer of competitive performance race boats, powerboats and pleasure boats. Providing sponsorship and technical support for in the APBA Factory Class I and II series. Formula - Wikipedia, the free encyclopediaIn mathematics, a formula (plural: formulas or formulae [1]) is an entity constructed using the symbols and formation rules of a given logical language. formula: Definition, Synonyms from Answers.comformula n. , pl. , -las , or -lae ( ). An established form of words or symbols for use in a ceremony or procedure Formula 1™ - The Official F1™ WebsiteLive timing, video, mobile, tickets, news, results, galleries. The Formula Italian BandThe Offical Website of the Formula Italian Band ... Benvenuti Amici [Welcome] The Formula is an authentic Italian band that has captured a versatile balance, showing off their ... formula - definition of formula by the Free Online Dictionary ...for·mu·la (fôr my-l) n. pl. for·mu·las or for·mu·lae (-l) 1. a. An established form of words or symbols for use in a ceremony or procedure. b. FCI Home PageTop of Page © Copyright 2006 Formula Consultants Inc. All rights reserved. Chemical formula - Wikipedia, the free encyclopediaA chemical formula or molecular formula is a way of expressing information about the atoms that constitute a particular chemical compound. The chemical formula identifies each ... Formula One: Information from Answers.comFormula One (F1), type of racecar used in Grand Prix automobile racing . Capable of speeds exceeding 230 mph (370 kph), the technologically Formula definition of Formula in the Free Online Encyclopedia.formula, in chemistry formula, in chemistry, an expression showing the chemical composition of a compound compound, in chemistry, a substance composed of atoms of two or more ...
Simple chemistry problem that I just can't figure out?!? Its getting really frustrating. Rutherford collected helium atoms in his container for a year. He found that during this time, 1 gram of radium produced about 7.7 x 10^-6 grams of helium. He estimated that during this same time 1.16 x 10^18 alpha particles were emitted. If each alpha particle produces one helium atom, what is the weight in grams of a single helium atom? Could you also (or at least) write the formula for finding it, please?
Combustion Analysis Problem? PROBLEM: Polystyrene like other plastics and like diamonds and silica is a network solid. Carbon and Hydrogen atoms are connected by huge networks of covalent bonds. it isn't made up of small molecules so it dousn't really have a molar mass, but like any compound, polystyrene's atoms are combined in definite proportions. to learn more about the composition of polystyrene, combustion analysis was performed on a 2.57 g sample. in combustion analysis, 8.67 g of carmbon dioxide and 1.77g of water were produced. A. How many moles of carbon were present in the original sample of polystyrene? B. How many moles of hydrogen were present in the original sample? C. What is the empirical formula of polystyrene?
Excel help with macro or formula? I have a spreadsheet with the date running from 1st jan 05 to 31st june 10 in one column. In the adjacent column there is a number for that day. Now what i need to do is delete every single row apart from the last day of the week. Now what is difficult is that 1.It is business related it only has mon-fri and 2. Occasionally there was a holiday, therefore friday does not exist, therefore must use the thursday for that week. So what i need excel to do is to look for is friday, but if friday does not exist then to take thursday. Then copy those rows out, or delete the other ones or similar. What i;m doing at the moment is highlighting the cells then deleting them 4 at a time or so. I have to do this for about 35 sheets, so a shortcut would be good. Any ideas for a macro or something?
I really need help with this chemistry problem PLEASE? Its getting really frustrating. Rutherford collected helium atoms in his container for a year. He found that during this time, 1 gram of radium produced about 7.7 x 10^-6 grams of helium. He estimated that during this same time 1.16 x 10^18 alpha particles were emitted. If each alpha particle produces one helium atom, what is the weight in grams of a single helium atom? Could you also (or at least) write the formula for finding it, please?
is it alright to let a 11 month old baby bottle feed herself to sleep, in her crib, with formula milk? the reason l ask is concern for her oral hygiene. She has sprouted two bottom front baby teeth and 2 upper ones are sprouting now. The milk formula does contain sugar l think. l will start to clean her teeth with a clean gauze soon (any video sites showing you how to use it to clean baby's teeth would be great) she almost always falls asleep drinking the formula milk herself. Lastly, when should a baby toothbrush be introduced and l assume no toothpaste is used? thanks in advance
cot(thetapi/2-u) = tan u is a? A. Half-angle formula B. Co-terminal formula C. Co-function formula D. Periodic formula
my GPA in Japan or what is their GPA formula? ok, let me explain first, for example this is how we calculate GPA in my country: simply A+B+C+D/total number of grades, where A=5, B=4, C=3 and D=2, so according to this my GPA is 3.41 but somehow i can't put that in Japanese system, it doesn't fit or i get it wrong?? any clues? thanks...
science help please help me thank you so much ill rate you best i promise thanks so much? 1. Which of the following statements helps explain why there are millions of carbon compounds? A) Carbon has four valence electrons. B) Carbon atoms form bonds with other carbon atoms. C) Carbon atoms can form single, double, and triple bonds. D) all of the above 2. Which of the following statements is true? A) Organic compounds always contain carbon and hydrogen. B) Organic compounds contain only carbon and hydrogen. C) Organic compounds are produced only in organisms. D) About 10 percent of all known compounds are organic compounds. 3. The carbon atoms in a hydrocarbon can NOT be arranged in A) straight chains. B) branched chains. C) rings. D) a network solid. 4. Which of the following compounds is most reactive? A) ethane B) ethene C) ethyne D) They are all equally reactive. 5. Organic compounds contain A) potassium and diamond. B) carbon and hydrogen. C) isomers and ionic bonds. D) fluorine and neon. 6. An organic compound that contains ONLY hydrogen and carbon is called a A) carbogen. B) isomer. C) carbate. D) hydrocarbon. 7. What type of bonds are found in a saturated hydrocarbon? A) single bonds B) double bonds C) triple bonds D) quadruple bonds 8. What factors determine the properties of a hydrocarbon? A) the number of carbon atoms B) the mass of the atoms C) how the atoms are arranged D) both a and c are correct 9. The more carbon atoms, A) the lower the boiling point is. B) the lower the mass is. C) the higher the boiling point is. D) weaker the bonds are. 10. __________ are compounds with the same molecular formula but different structural formulas. A) Straight chains B) Isomers C) Hydrocarbons D) Rings
Help with this math problem? Solving formulas (literal equations) a) Solve for P in terms of Q if 5P - 3Q = P + Q + 16 b) Solve for a in terms of b and c 2ab - 3b = b + 2c
Heron's Formula Solve? use Heron’s formula to solve if you know the three sides of a triangle. Side A= 13, Side B=23, Side C=16.
cot(pi/2-u) =tan u is a? A. half-angle formula B. co-terminal formula C. co-function formula D. periodic formula
does active white L-glutathione (USA formula) really works? hello! i want to know about your personal experience about this glutathione... Does it really works? I I got mine from e-bay...how many months have you seen the effects? And what is the most effective brand of glutathione?
How can I make my Excel spreadsheet return 9/2009 to (current date) in the same cell? I put in this formula, =9/2009 to TODAY(), but it returned: 9/2009 to 40388 I think that it just doesn't know how to format the date... Any suggestions would be appreciated!
Prove this formula works. Help? Jacques concluded that tus sums of the first (n) even numbers is n(n+1) so, 2+4+6...+2n = n(n+1) Jaques mother observed that his equation is an example of an arithmetic series and that the sum of the terms of an arithmatic series is determined as follows: t1 + t2+ t3 + ... +tn = [n(t1 + tn)] / 2 Prove Jacques conjucture using this formula. Is the proof an example of Inductive reasoning or deductive reasoning? Explain.
A math equation that proves Liberals Love America more than Conservatives? A scientist developed a math equation that took up 429,249,492 pages of computer paper that proves Liberals love America more than USA Conservatives. His work was not done by surveying Liberals or Conservatives, but by psychoanalysis and getting into the DNA of Liberals and Conservatives.... He had to take the area of trapezoids, do very complex calculus and differential equations, very very very complex statistical math using Chi-Squared, tons of distribution tables....and there was some trig involved. he had to take the the cosine of a tangent of an arc-sine and apply the pathagorean theorem 3201 times and do the quadratic formula 5,304 times in this equation..... And he put needles on his fingers to make sure he hit EXACTLY the right buttons on the calculator so no key punch errors.... and he had to do square-roots, cube-roots, even use imaginary numbers and pi and e, and the golden ratio... all this math he used...to get his final answers that Liberals love America more than Conservatives. Do you agree with his mathematical finding? oh and he had to use geometric series and find upper limits, and also 51,549 times, numerators and denominators cancelled out saving even more time
can you explain me about the distance formula in trigonometry? please keep in mind that i have begun maths with trigonometry and have no knowledge of high fi topics like vectors,etc. it is not about polar or something but about a standard circle whose radius is 1unit. I just need info of distance formula between two points on a graph paper.
Formula Boats - Renowned Manufacturer of PowerBoatsManufacturer of competitive performance race boats, powerboats and pleasure boats. Providing sponsorship and technical support for in the APBA Factory Class I and II series.
Formula - Wikipedia, the free encyclopediaIn mathematics, a formula (plural: formulas or formulae [1]) is an entity constructed using the symbols and formation rules of a given logical language.
formula: Definition, Synonyms from Answers.comformula n. , pl. , -las , or -lae ( ). An established form of words or symbols for use in a ceremony or procedure
Formula 1™ - The Official F1™ WebsiteLive timing, video, mobile, tickets, news, results, galleries.
The Formula Italian BandThe Offical Website of the Formula Italian Band ... Benvenuti Amici [Welcome] The Formula is an authentic Italian band that has captured a versatile balance, showing off their ...
formula - definition of formula by the Free Online Dictionary ...for·mu·la (fôr my-l) n. pl. for·mu·las or for·mu·lae (-l) 1. a. An established form of words or symbols for use in a ceremony or procedure. b.
FCI Home PageTop of Page © Copyright 2006 Formula Consultants Inc. All rights reserved.
Chemical formula - Wikipedia, the free encyclopediaA chemical formula or molecular formula is a way of expressing information about the atoms that constitute a particular chemical compound. The chemical formula identifies each ...
Formula One: Information from Answers.comFormula One (F1), type of racecar used in Grand Prix automobile racing . Capable of speeds exceeding 230 mph (370 kph), the technologically
Formula definition of Formula in the Free Online Encyclopedia.formula, in chemistry formula, in chemistry, an expression showing the chemical composition of a compound compound, in chemistry, a substance composed of atoms of two or more ...