1. How many significant digits are in the reading 200+/-0.2 mV? a.) Three, and it should...
1. How many significant digits are in the reading 200+/-0.2 mV?
a.) Three, and it should be written as 200+/-0 mV
b.) Three, and it should be written as 200+/-1 mV
c.) Four, and it should be written as 200.0+/-0.2 mV
2. How many significant digits are in the reading 200+/-30 mV?
|
a.) Two, and it should be written as 0.20+/-0.03 V |
||
| b.) |
Three |
|
|
c.) Four, and it should be written as 200.0+/-30.0 mV |
Homework Answers
Answer:-
1.
c.) Four, and it should be written as 200.0+/-0.2 mV
2.
c.) Four , and it should be written as 200.0 +/- 30.0 mV
Add Answer to:
1. How many significant digits are in the reading 200+/-0.2
mV?
a.) Three, and it should...
6. How many mL of 0.2 M sodium acetate should be added to 200 mL of...
6. How many mL of 0.2 M sodium acetate should be added to 200 mL of 0.2 M acetic acid to make a buffer of pH 5.5? (refer to Table 2-2 on page 60 for pKa values). What is the molarity of the resulting buffer with respect to acetate (acetate + acetic acid)? 7. How many mL of 0.2 M HCl should be added to 50 mL of 0.2 M Tris base (Trishydroxymethyl aminomethane) to make a buffer of pH...
1. (a) (i) How many different six-digit natural numbers may be formed from the digits 2,...
1. (a) (i) How many different six-digit natural numbers may be formed from the digits 2, 3, 4, 5, 7 and 9 if digits may not be repeated? (ii) How many of the numbers so formed are even? (iii) How many of the numbers formed are divisible by 3? (iv) How many of the numbers formed are less than 700,000? (b) JACK MURPHY’s seven character password consists of four let- ters chosen from the ten letters in his name (all...
Indicate how many significant digits ore in each of the following numbers. a. 0 00160 b....
Indicate how many significant digits ore in each of the following numbers. a. 0 00160 b. 8.40 times 10^-4 c. 10,100. d. 1001.00 Perform the following calculations to the correct number of significant digits. a. (1.1289 + 2.3400)/(1980 times 2.00) 6. (2 76 times 10^3-7.77 times 10^-1)/(45 + 23.47) c. (242.89X0.00671) d. 45.98 - (11.6)^4 3. Perform the following conversions. a. 90.9 cm to km b. 5.55 times 10^-Gm to pm c. 1125 km^3 to mL\",
Problem 3.1 If each of the 10 digits 0-9 is chosen at random, how many ways...
Problem 3.1 If each of the 10 digits 0-9 is chosen at random, how many ways can you choose the following numbers? (a) A two-digit code number, repeated digits permitted. (b) A three-digit identification card number, for which the first digit cannot be a 0. Repeated digits permitted. (c) A four-digit bicycle lock number, where no digit can be used twice (d) A five-digit zip code number, with the first digit not zero. Repeated digits permitted.
Hexadecimal digits are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C,...
Hexadecimal digits are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, and F. (Please explain briefly) How many hexadecimal strings of length ten have at least three E’s? How many hexadecimal strings of length ten have exactly two A’s and at most two B’s? How many hexadecimal strings of length ten have six digits from the set 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 and four digits from the set...
A motorcycle licence plate consists of two or three letters followed by four digits. How many...
A motorcycle licence plate consists of two or three letters followed by four digits. How many licence plates can be made? A club has 18 members. In how many ways could a president, vice president, treasurer and secretary be chosen? How many ways are there to select four people from a group of nine people, without regard to order? In how many ways can 4 cards be chosen from a deck of 52, if the order in which they are...
1. how many significant figures do each of the following numbers have: (a) 214, (b) 81.60,...
1. how many significant figures do each of the following numbers have: (a) 214, (b) 81.60, (c)7.03, (d) 0.03, (e) 0.0086, (f)3236 and (g) 8700? 2. write the following numbers in powers of tenth notation: (a)1.156,(b)21.8,(c)0.0068,(d)328.65,(e)0.219 and (f) 444. 3.Write the following as full(decimal) numbers with standard units: (a) 286.6mm, (b)85 microV, (c)760 mg, (d) 60.0 ps, (e) 22.5fm, (f) 2.50 gigavolts. 4.A light year is the distance light travels in one year( at speed-2.998 x 10^8m/s). (a) how many...
How many three-digit numbers can be formed from the digits 0, 1, 2, 3, 4, 5,...
How many three-digit numbers can be formed from the digits 0, 1, 2, 3, 4, 5, 6, and 7 if each digit can be used only once, how many are greater than 330
A license plate consists of two letters followed by three single digits. (a) How many different...
A license plate consists of two letters followed by three single digits. (a) How many different license plates can be made? (b) How many different license plates can be made if no two-character U.S. state abbreviations are allowed for the two letters?
1- How many significant figures are possible when recording the following measurements? a) A buret reading b) A...
1- How many significant figures are possible when recording the following measurements? a) A buret reading b) A sample delivered by a 25 mL pipette c) A sample prepared in a 100 mL volumetric flask 2. In the analysis of the vinegar solution, why does the beaker used to collect the supplied vinegar sample need to be dry? 3. Why if the inside wall of the Erlenmeyer flask rinsed with a spray of distilled water just before the endpoint? 4. Calculate the pH and pOH for...
6. How many mL of 0.2 M sodium acetate should be added to 200 mL of 0.2 M acetic acid to make a buffer of pH 5.5? (refer to Table 2-2 on page 60 for pKa values). What is the molarity of the resulting buffer with respect to acetate (acetate + acetic acid)? 7. How many mL of 0.2 M HCl should be added to 50 mL of 0.2 M Tris base (Trishydroxymethyl aminomethane) to make a buffer of pH...
Indicate how many significant digits ore in each of the following numbers. a. 0 00160 b. 8.40 times 10^-4 c. 10,100. d. 1001.00 Perform the following calculations to the correct number of significant digits. a. (1.1289 + 2.3400)/(1980 times 2.00) 6. (2 76 times 10^3-7.77 times 10^-1)/(45 + 23.47) c. (242.89X0.00671) d. 45.98 - (11.6)^4 3. Perform the following conversions. a. 90.9 cm to km b. 5.55 times 10^-Gm to pm c. 1125 km^3 to mL\",
Problem 3.1 If each of the 10 digits 0-9 is chosen at random, how many ways can you choose the following numbers? (a) A two-digit code number, repeated digits permitted. (b) A three-digit identification card number, for which the first digit cannot be a 0. Repeated digits permitted. (c) A four-digit bicycle lock number, where no digit can be used twice (d) A five-digit zip code number, with the first digit not zero. Repeated digits permitted.
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago