The measurement 0.002 m has _____ significant digits.
a. not enough info
b. 2
c. 3
d. 1
The measurement 0.002 m has _____ significant digits. a. not enough info b. 2 c. 3...
1a. Determine the accuracy (the number of significant digits) in each measurement. 0.04060s b. Express each of the following values using scientific notation. 89.600,000g c. Express each of the following values using scientific notation. 0.00481L d. What is metric prefix for 0.010
ဈ 2. & Indicate the precision and the. of significant digits of the following measurements in the space provided. Round off the measurements to the correct number of digits needed. 8 Express these rounded measurements in proper scientific notation in the last column. See example. OF SIG. DIG. MEASUREMENT PRECISION MEASUREMENT MEASUREMENT IN NOW NEEDED ROUNDED OFF SCI. NOT 63.479 m (example) 3 5 3 63.5 m 6.35 x 10 m uz A 0.004 659 m 2 B5 803 L...
The measurement 10.3 cm has more significant figures than the measurement 10.3 m. a. True b. False
The "best" result is always associated with the measurement with the smallest uncertainty. Measurement B has half the standard uncertainty of measurement A. Therefor e our 68 % coverage probability is associated with a smaller interval (83.44 g o 83.56 g) for measurement B than measurement A (83.38 g to 83.62 g). In other words we have better knowledge about the value of the measurand from measurement B, since we have the same coveroge probability associated with a norrower interval....
2) Solve and write your answer/round up to correct digits/significant digits. a. (1.930)x(18456.01) b. (0.0230)/(12061) C. (2030.1)+(1300.02) d. (0.0023)-(2.030)
Part A [H+]= 3.9×10−3 M . Express the molarity to two significant digits. [OH-] = [H+]= 1.5×10−9M . Express the molarity to two significant digits. [OH-] = Part C A solution in which [H+] is 1000 times greater than [OH−]. Express the molarity to two significant digits.
(a) A 0.002 M solution of HA has a pH of 3, calculate the % dissociation of the acid. (b) A 4e-4 of HA solution dissociated by 20 %. Calculate the pH of the solution. (c) A 0.03 M solution of A^- (conjugate base a HA) and 0.03 M of strong acid are combined and results with a pH of 7. What is the pH of a 0.004 M solution of HA? (d) What starting concentration of HA would be...
Assume that every numerical data has 3 significant digits. Express the final numerical answers with 3 significant digits. Use scientific notation when appropriate. A square loop has 25 turns and sides of a = 2 cm and b = 5 cm. There is an external magnetic field of 0.3 T, parallel to the plane of the loop and the shorter sides, and perpendicular to the longer sides. Has clockwise current of 8A Find: a. The net force on the loop....
For 0.002 m CaCl2 at 25°C use Debye-Hückel limiting law to calculate the mean activity coefficient? Select one: a. 0.83 b. 0.71 c. 0.91 d. 0.55 e. 0.62 Next page
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\",