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October 23, 2014

Search: trig/sig figs

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Physics Sig Figs
When you are multiplying two numbers, how do you determine the number of significant figures? You go with the lowest sig figs in your problem. so suppose you multiply 2.34 and 8.9574, in your product you should have 3 sig figs as the lowest sig fig in your problem is 2.34 ...
August 27, 2005 by Meleas

How many sig figs?
For this question: what is the boiling point of 0.39 mol ethylene glycol and 0.13 mol KBr in 155 g H2O? I got 102.1470968 and I tried it with 2 and with 3 sig figs but it's both wrong. I know that's the correct answer but I don't know how many sig figs I'm suppose to use
March 24, 2011 by Hannah

sig figs
I am having trouble with my sig figs Many scientific data are reported at 25C. What is this temperature in kelvins and in degrees Fahrenheit? I got 3.0e2 degrees kelvin since it will have to have two sig figs but it said it was wrong
August 15, 2012 by Hannah

How many sig figs?
An equilibrium mixture of the following reaction was found to have [H2] = 0.020 M and [I2] = 0.020 M at 340C. What is the concentration of HI? H2(g) + I2(g)--> 2 HI(g) Keq = 69 at 340C I got .166 but it said check number of sig figs so im guessing its 2 sig figs but I ...
April 17, 2011 by Rachel

chemistry
for a manometer flask diagram, if ha = 134 mm, how do I convert to torr, Pa, and atm with the right amount of sig figs? Related to sig figs, how do I get the right amount of sig figs (which is 2) with 8339?
October 29, 2007 by Avonlea

sig figs
how do you round 0.009934 to two sig figs? would it be .010? or would that be 3 sig figs?
August 22, 2010 by Rebekah

SIG FIGS
How many significant figures does 22.0, 0.22, 22. , 0.022? Im just confused as to the decimal addition to numbers and what the sig figs will be for them. If you dont mind can you please state some rules for sig figs that are helpful and some confusing rules as well and pretty ...
September 20, 2012 by Sally

Chemisty (Sig Figs)
1.20 Mm to kilometers its 1200 but when I put it in it said not the correct number of sig figs
August 25, 2010 by Rebekah

Math
What is the difference between the measured values of 1.05m and 1.050m? What factor of a measurement tool determines the sig figs of a measured value? The two values are different because of their sig figs, the first has 3 and the other has 4. I think that the factor of a ...
September 3, 2012 by Hannah

Physics(Please check)
What is the difference between the measured values of 1.05m and 1.050m? What factor of a measurement tool determines the sig figs of a measured value? The two values are different because of their sig figs, the first has 3 and the other has 4. I think that the factor of a ...
September 2, 2012 by Hannah

Physics(Please check)
What is the difference between the measured values of 1.05m and 1.050m? What factor of a measurement tool determines the sig figs of a measured value? The two values are different because of their sig figs, the first has 3 and the other has 4. I think that the factor of a ...
September 3, 2012 by Hannah

chem
do this using the appropriate number of sig figs 320.44 − (3104.1/2.6) i got -880 as my answer and it said to check my sig figs. I thought it was all the numbers up to the ones place
August 18, 2012 by Hannah

sig figs
each of the following were suppose to be rounded to two sig figs. mark then correct or incorrect. if incorrect state the correct answer 1) 1.249 103 to 1.3 103 i know its wrong but i don't know the correct answer 2)7.999 102 to 80 its wrong and i thought it was 800. but they ...
August 23, 2010 by Sara p.

Chemisty (Sig Figs)
this is my last question for the whole assigment and im soo glad!!! (9465 + 45 - 9.9) 8.1 X 10^6 i got 76950.e6 it said it was half right and said check your number of sig figs
August 23, 2010 by Hannah

Chemisty (Sig Figs)
Each of the following numbers was supposed to be rounded to two significant figures. For each one below, decide whether it was correctly rounded or not, and for those that were incorrectly rounded, correct them. (a) 3.149 e3 to 3.2 e3 Its incorrect but I dont know the correct ...
August 23, 2010 by Hannah

chemistry
1) Starting with 75.00 g of 1-propanol and 75.00 g of PCl 3. Calculate the theoretical yield of 1-chloropropane. 3CH3CH2CH2OH + PCl 3 --> 3CH3CH2CH2Cl + H3PO3 Answer in terms of grams. the answer that i got is 98.12, is this right and how many sig figs should it be? 2) What...
October 1, 2011 by anonymous

SIG FIGS
174.69 rounded to 2 sig figs
May 13, 2014 by Anonymous

Beginning Chemistry
I am really confused weith sig. figs. and it would really help if someone could check my answers. My answers are after each problem Determine the number of sig. figs. in the following (a)12.7040g - 6 (b)200.0 cm - 4 (c)276.2 tons - 4 (e)4.00 x 10^3 - 3 (f)100 degrees C - 1
September 20, 2007 by Sadie

Physics
I'm confused about significant digits in multi-step problems. If I have something like (7.004 +0.2230)/(15.1-0.033+12.07) do I first do the addition and round to 4 sig figs and then do the denominator and round to 2 sig figs and finally divide? Or do I just work everything out...
February 9, 2009 by Katie

Chemistry - check answers
Can someone please check my answers and make sure they're correct? A) How much heat would it take to raise the temperature of 46.0 g of water from 90.0 to 100.0 C? Answer using correct sig figs, sign, and units. My answer: +1.92x10^3 J B) How many joules are released when 84.0...
February 23, 2014 by Amanda

SIGS FIGS
WHAT ARE SIG FIGS
September 16, 2011 by David

Chemistry Check
A thermocouple was calibrated to give Celsius temperature. In the ice bath the voltage reading was 0.250 V, and in boiling water at 736 Torr the reading was 1.20 V. Derive the conversion equation between Volts and temp. C. So if I'm working this right, it should go like this: ...
September 24, 2012 by Sarah

trig/sig figs
There are 60" in 1', 60' in 1, and 2π radians in 360. Convert arc-seconds into radians. KEep 6 significant figures. If someone could help and walk me through this process, it would be soooo appreciated!
January 17, 2013 by carl

Sig Figs
In a 9V circuit, all the resistors are 20 or 40 kilo Ohms. Convention says that calcs should therefore be quoted to 1 sig fig, since the volts are the least accuracy. 2 seems better though. Any ideas?
February 22, 2009 by charlie

Propagation of error and sig. figs
I'm really embarrassed to ask this! I knew how to do it before but I forgot after 2 years. I remember learning it for analytical chemistry :( So a basic problem: What is x= a+b+c? given that: a= 100.7 +/- 0.05 b= 0.61 +/- 0.005 c=226 +/- 0.5 OK. My question is the following: I...
January 22, 2010 by Steven

math
See below PLEASE at ******** If computing N(t) = Pa^t where P=642.035376 and a = 2.900129566 (both are stored in calculator), to what extent should the values of N(5), N(7) and N(9) be rounded? and why? Note: N(5)= 131,718 N(7)= 1,107,849 N(9)= 9,317,847 algebra - bobpursley, ...
November 6, 2011 by another sig figs ques Please answer

algebra
SEE BELOW PLEASE at******** If computing N(t) = Pa^t where P=642.035376 and a = 2.900129566 (both are stored in calculator), to what extent should the values of N(5), N(7) and N(9) be rounded? and why? Note: N(5)= 131,718 N(7)= 1,107,849 N(9)= 9,317,847 algebra - bobpursley, ...
November 6, 2011 by sig figs ques 2

algebra
SEE BELOW PLEASE at******** If computing N(t) = Pa^t where P=642.035376 and a = 2.900129566 (both are stored in calculator), to what extent should the values of N(5), N(7) and N(9) be rounded? and why? Note: N(5)= 131,718 N(7)= 1,107,849 N(9)= 9,317,847 algebra - bobpursley, ...
November 6, 2011 by sig figs ques 2

chem
why are sig. figs important?
December 16, 2008 by Natash

chemistry
how many sig figs are in 85,100?
October 16, 2014 by zea

science
How do I multiply using sig figs?
October 22, 2007 by Griffin

MATHS
what is 0.0113 to 2 sig figs please
May 5, 2009 by mathew -b

Math
How many sig figs does tan^-1(9/7) have?
August 24, 2010 by jim

chemistry
how many sig figs in this number: 32.6721
September 13, 2013 by Muhammad

Math
174.69 rounded to 2 sig figs
May 13, 2014 by Anonymous

chem sig figs
How many significant figures are in 0.0? And how about 0.00?
February 25, 2012 by L.Bianchessi

beginning chemistry
The problem says indicate the the number of sig. figs. that should be present in the answers to the following problem without solving the problem. 0.70 x 7.00 x 6.880= What is a sig.fig. and how can you find them without solving the problem? It doesn't make sense
September 19, 2007 by Kimmi

Chemistry
This should be easy... What would 61.98 be to three sig figs?? 62.0 or 61.9??
October 22, 2008 by Laur

Chemisty (Sig Figs)
79.7 + 890.43 - 23 = 9.5 e2 its wrong and I am suppose to correct it.
August 23, 2010 by Hannah

Physics
how many sig figs do you use for estimated absolute uncertainties?
November 29, 2010 by Emily

chemistry
(3.84 x 103 x 0.764) + 1.59 answer with the correct sig figs
January 31, 2012 by k

chemistry
(2.60 x 10^3 x 0.897) + 2.69 (with correct # of sig figs) IS the answer 2334.89
January 31, 2012 by kr

significant figures
(42.70 + 0.259) / 28.4 I wanted to know, if it 1.510 or 1.51? because it has to be correct sig figs.
September 2, 2008 by soojung

significant figures
how do i make 1020 to 2 sig figs? it cant round to 1100..
December 2, 2008 by s

Chemistry
Round this to two sig figs: 4025000 Is the correct answer 4.0 x 10^6?
September 26, 2012 by Anonymous

Chemistry
Hi I need help with sig figs with this problem (0.6216+0.0871)/(0.0740+0.0335)
May 6, 2010 by Anonymous

chemistry
your in seam is 35.0 in.how many cm is this?show your final answer with units and correct sig figs.
September 5, 2012 by Anonymous

science
What are the rules for number of sig figs in the answer when multiplying/dividing? when adding /subtracting?
November 29, 2010 by anonymous

math
sig figs for.. 1.399 x by 10-3 0.0763 m2 212.080 g 673.133 K 6.69808e+06 cm
October 2, 2011 by becca

sig figs
70.74074074 ^ 1/4 = a 2.900129566 = a Now I have to round to 3 significant digits. Is it 2.90 or 2.9001?
November 6, 2011 by help please

physics
Velocity and displacement with uniform acceleration: 1. A car with an initial speed of 23.7 km/h accelerates at a uniform rate of 0.92 m/s^2 for 3.6 s. Find the final speed and the displacement of the car during this time. The final speed is 36 km/h. is this right? did i do ...
September 25, 2006 by anonymous

Physics
Calculate the power output of a 1.5 fly as it walks straight up a windowpane at 2.2 P=__W (2 sig figs)
July 14, 2010 by Brittany

Physics
Calculate the power output of a 1.5 fly as it walks straight up a windowpane at 2.2 2 sig figs P= ___W
July 14, 2010 by Brittany

conversion problems
150. cm to millimeters i got it to 1500mm. but it said check the number of sig figs.
August 24, 2010 by Hannah

Chemistry
(2.50mL)(0.10M) / 75.00mL = 0.003333 Im not sure how many sig figs to use. Would it 3.33e-3?
February 26, 2012 by Hannah

Math
How many significant figures does 22.0, 0.22, 22. , 0.022? Im just confused as to the decimal addition to numbers and what the sig figs will be for them. Thank you!!!
September 20, 2012 by Sally

sig figs
7.49e7/[(4/3)*(3.1416)*(1.4 e2)] I get 24707113200 but is wrong. sory for bad english. is not my first lenguage.
August 29, 2014 by lorena

Chemistry
What is the heat capacity of 190g of liquid water? I came up with 794.96 but it says my sig figs are wrong? Help?????
May 19, 2010 by B

ROUNDING
It is pretty easy but I am not quite sure. Round 0.03095583 to the 3 sig figs. Is it 3.12 x E-2 The format is OK but the rounded-off number is 3.10 x 10^-2 2681
August 25, 2005 by Nisar

Physics
the teacher said something about doing the correct sig figs..im not sure if it applies to this, im so confused! 10.2* 7.5 =76.5? 27.1/5.31 =5.103578154425612?? 2.712 + 10.8= 13.512?
August 24, 2009 by Yulia

Chemisty (Sig Figs)
so i am terrible at this. Round each number to 3 significant numbers. Can you explain? 1. 9845.42800 2. 1.548937675e12 3. 10.7771777425 4. 0.000045875 thanks:)
August 20, 2010 by Rebekah

Chemistry
At 752.3 torr and 20.35oC, what is the density of argon in g/L? Report your answer with 4 sig figs I got 1.875 using d=PM/RT, but it says wrong. I don't know why... I appreciate your help.
April 20, 2008 by Jennifer

physics
The highest George can suck water up a very long straw is 2.0m What is the lowest pressure he can maintain in his mouth? Express to two sig figs
September 7, 2012 by george

rounding
(a) 455 cal to joules thats 1 903.72 joules but i need to round it to 3 sig figs how do u do that?
September 9, 2010 by jack

Chemistry(Please check)
(0.80M)(5.00mL) = c2 (75.00mL) c2 = 5.33e-2 M Is the correct amount of sig figs?
February 26, 2012 by Hannah

chemistry
Calculate the amount of heat required to raise the temperature of a 16 g sample of water from 5C to 12C. Round to the correct number of sig figs. I got 5e3 and it was wrong.
September 15, 2010 by Rebekah

CHEMISTRY!!!!!!! HELP PLEASE:)
How many kilograms of chlorine are in 24 kg of each of the following chlorofuorocarbons (CFCs)? 1) CF2CL2 express answer using two sig figs how would i solve for this problem??? thanks!
September 7, 2011 by ALISON

Chemistry
What should be the number of significant figures in the following calculation? It's an error calculation which is absolute value (True value - experimental value) / true value * 100 so it would be: absolute value [-601.7 - (-587)] / -601.7 * 100 Should the answer be 2.44 or 2....
April 30, 2013 by James

Physics
The fisherman decelerates steadily to a stop in 20.6 s. What is the boat's acceleration, in m/s2, during this last portion of the trip? Initial velocity is 1.70 m/s. Use correct sig figs. The answer is not -0.0825?
September 14, 2008 by Carmen

chem.
Calculate the amount of heat required to raise the temperature of a 25 g sample of water from 5C to 10.C. i got 523 then rounded it to two sig figs 520 but it said it was wrong
September 15, 2010 by Rebekah

Chemistry
Calculate the pH after 0.13 mol of NaOH is added to 1.00 L of the solution that is 0.57 M HF and 1.13 M KF. I got the answer of 3.66 to 3 sig figs, but it's wrong. Can you please tell me what I did wrong? -Thanks
March 27, 2011 by Katrina

chemistry
Ethanol has a density of 0.780 g/mL. What volume would 500. grams of ethanol occupy. Answer with correct number of sig figs
January 31, 2012 by kr

Chemistry
For 0.06697mol / 0.1kg = 0.6697 mol/kg does my answer have the correct amount of sig figs? Same for 0.1004mol / 0.1kg = 1.004mol/kg ?
February 20, 2012 by Hannah

Physics
What is the coeffecient of drag for the shape that has diameter 7.32[cm]? . Use three sig. figs. or N/A if there is not enough information. 2. You have a large wind tunnel of cross-sectional area 0.95[m2]. You have a set of shapes that are all the same shape except they each ...
April 7, 2013 by Sean

chemistry
1.64 L of a 4.95 M solution is diluted to form a 2.58 M solution. (Rounded to 3 sig figs) there are __________ L of the 2.58 M solution formed.
February 5, 2014 by Pooja

CHEMISTRY
2H20(l) = 2H2 (g) +O2 (g) For the above, if 1.50 mg of water is decomposed, what mass of hydrogen is procduced? (1 mg=10^6g=1 metric ton)? I came up with 0.1678475161 and rounded it to .17 mg H2. Am I on the right track and did I include the correct amount sig figs?
May 4, 2010 by Carli

chemistry
An antibiotic is sold in 4.0 mL ampoules that contain 60.0 mg of drug (60.0 mg/ 4.0 mL). How many milliliters of the antibiotic should be withdrawn from the ampoule if 20 mg are to be administered to a patient?Answer with the correct number of sig figs
January 31, 2012 by krystal

chemistry
A patient has 0.050 L of blood drawn and this volume of blood has a mass of 55.0 g. What is the density of the blood? Answer with the correct number of sig figs
January 31, 2012 by k

chemistry
A patient has 0.050 L of blood drawn and this volume of blood has a mass of 55.0 g. What is the density of the blood? Use correct number of sig figs 1.1?
February 1, 2012 by kr

chemistry
An antibiotic is sold in 4.0 mL ampoules that contain 60.0 mg of drug (60.0 mg/ 4.0 mL). How many milliliters of the antibiotic should be withdrawn from the ampoule if 20 mg are to be administered to a patient?Use correct number of sig figs 0.75ml?
February 1, 2012 by kr

chemistry
What is the percentage yield of the reaction of 4.9 g isoamyl alcohol with 4.9 g of acetic acid if 3.5 g of isoamyl acetate product is obtained after distillation? Enter your answer, without a % symbol, to 2 sig. figs.
October 11, 2014 by sparkles

Chem 10
Calculate the value of the following in exponential form, using standard scientific or "e" notation (for example, 105 = 1.05e2). Enter the correct number of significant figures. (2.700e2 cm)3 / (1.20e3 cm)2 Can't understand how many sig figs.
January 18, 2011 by JoJo

Physics
Platform area = 0.027[m2]. Wind Speed = 7.1[ms-1]. Air Density = 1[kg m-3]. Drag = 0.39[N]. Lift = 1.45[N]. Coeffecient of Lift = Use three sig. figs. or N/A if no answer. Platform area = 0.045[m2]. Wind Speed = 5.7[ms-1]. Air Density = 1[kg m-3]. Drag = 0.77[N]. Lift = 1.19[...
April 7, 2013 by John

astronomy & space
What is the redshift of a galaxy which lies at a distance of 50 mpc, asssuming that the hubble constant is H_0 = 67 km s^-1 Mpc^-1? assume that the speed of light is c=3.0x10^5 Km s^-1 please answer to an accuracy of 2 sig figs. Thankyou.
May 5, 2009 by mathew -b

chemistry
You are traveling in a country that uses the metric system. Your child is sick and a nurse determines her temperature to be 40.8 C. What is this temperature in F? (1.8*40.8)+32=105.44 105 (answer with correct # of sig figs)
February 1, 2012 by kr

CHEMISTRY
Round this to three sig figs. 0.03335 Is it 0.0334? Is the rule: odd number goes up and even number stays the same? 3 is odd and is next to five...
October 26, 2013 by Anonymous

chemistry
How many grams of water would you add to 1.00 kg of 1.48 m CH3OH(aq) to reduce the molality to 1.00 m CH3OH. Use two sig figs. I get 4.8 * 10^2 grams and its not right. I want to put this up here again to see if there are any errors that could have possibly been made
February 21, 2010 by david

chemistry
How many grams of water would you add to 1.00 kg of 1.48 m CH3OH(aq) to reduce the molality to 1.00 m CH3OH. Use two sig figs. I get 4.8 * 10^2 grams and its not right. I want to put this up here again to see if there are any errors that could have possibly been made
February 21, 2010 by david

Math
Compute the following special functions. Keep the correct number of significant figures. 10^5.4 Can somewhere help me with this? Is it as simple as putting it into my calculator just like that? if so, how do I know what the correct number of sig figs are since the worksheet ...
January 21, 2013 by carl

Chemistry
If 13.75 g of iron (III) nitrate react with an excess of ammonium sulfide, how many grams of iron (III) sulfide are produced? Report your answer to 2 sig figs
July 8, 2012 by Stacey

math
I always thought I understood significant figures...until I attempted to tutor someone. Some of the rules seem counterintuitive. For instance... 10.070 why is it 5 sig fig's? the "0" on the right is useless. without it the # holds the same value. 20 Why is it only "1" sig fig...
January 30, 2008 by Charles

Chemistry
Calculate the ratio of the effusion rate of oxygen gas (O2) to that of nitrogen gas (N2). Express your answer in decimal form and calculate your answer to at least four sig figs.
September 23, 2010 by Mary

chemistry 30a
What volume (in mL) of an 8% w/v acetic acid solution would be needed to form 2.2 L of carbon dioxide gas at 25.2 degrees Celsius and 0.9982 atm? Assume the acid is reacted with excess sodium bicarbonate, and round your final answer to two sig figs.
March 12, 2012 by sara

Physics
1. You have a large wind tunnel of cross-sectional area 0.61[m2]. The wind speed is 4[ms-1]. Assume air density is 1 [kgm-3]. The Drag is 2.3[N]. What is the coeffecient of drag for the shape that has diameter 7.32[cm]? . Use three sig. figs. or N/A if there is not enough ...
April 7, 2013 by Sean

chem
158.5 mL of a AgNO3 solution at 5.0M was combined with a 3.5M CaCl2 solution. 110.5g of AgCl was recovered. Given that the CaCl2 is the limiting reagent, how many milliliters of the 3.5M CaCl2 solution was used? 2 sig figs
November 29, 2010 by Michelle

chemistry
a 23.74 mL volume of .0981 M NaOH was used to titrate 25 mL of a weak monoprotic acid solution to the stoichiometric point. determine the molar concentration of the weak acid solution. express in correct sig figs.
March 25, 2013 by Anonymous

Physics (fluids)
1. You have a large wind tunnel of cross-sectional area 0.61[m2]. The wind speed is 4[ms-1]. Assume air density is 1 [kgm-3]. The Drag is 2.3[N]. What is the coeffecient of drag for the shape that has diameter 7.32[cm]? . Use three sig. figs. or N/A if there is not enough ...
April 7, 2013 by Robert

math?
Give the answer to the following calculation with the correct number of significant digits. Report your answer in scientific notation. (6.17 x 10-1 + 4.9 x 10-2) x (3.95 x 10-2 + 6.454 x 10-3) i know how to solve for the answer, i just dont know the correct number of sig figs...
September 13, 2007 by des. student!

chemistry
In the reaction A to products, A is found to be 0.489 M at t=72.0 s and 0.468 M at t=82.2 s What is the average rate of the reaction during this time interval? Do I take the Ln (0.468/0.489) = -0.04395 / 10.2 = 4.3 * 10^3. yet the comp says its wrong. i have to put it to two ...
February 24, 2010 by david

chemistry
Some spacecrafts use hydrazine (N2H4) as fuel and is burned according to the following reaction: N2H4(l)+N2O4(g)=>2 N2O(g)+2 H2O(g) Calculate the DHrxn for this reaction using the standard enthalpies of formation from Appendix IIB. Calculate your answer to 4 sig figs
March 4, 2013 by Brandi

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