8) B
9) B
10) D
11) C
12) B
Rules for Multiplication
* Multiply the numbers.
* Round result to the same number of sig figs as least precise value.
13) C
Rules for Addition
*Add the numbers.
*Round result to the same number of decimal places as least precise value.
19) How many significant figures are in 1009.630 mL? A) 3 B) 4 C) 5 D) 6 E) 7 F) 8 20) How many different values of my are possible in the 4f sublevel? A) 1 B) 3 C) 5 D) 7 E) 9 F) 11
45) How many iron atoms are present in 0.552 mol of iron? A) 27.98 y old sobilo B) 2.798 x 1024 bolsoba C) 55.85 D) 6.02 x 1023 E) 3.32 x 1023
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\",
2.9 How many significant figures are in each of the following? a. 11.005 g b. 0.000 32 m c. 36 000 000 km d. 1.80 X 104 kg e. 0.8250 L f. 30.0°C How many significant figures are in each of the following? a. 20.60 mL b. 1036.48 kg c. 4.00 m d. 20.8 °C e. 60 800 000 g f. 5.0 x 10-3L 2.18 2.10
How many of the following measurements contain 3 significant Figures? 0.408g 9.040 K 0.0400ms 9.05 times 10^24 m The correct answer for the addition of 7.5 g + 226 g + 1.311g + 2.g is _____. 13.07g 13.071 g 13g 13.1 g 10 g How many significant figures should be reported in the answer to the following calculation? 121 cm times 0.86 cm times 4.95687 cm = _____ cm^3. 3 5 none of the other given answers 4
Part C Iron has a density of 7.86 g/cm (1 cm = 1 mL). Calculate the volume (in dL) of a piece of iron having a mass of 4.25 kg . Note that the density is provided in different units of volume and mass than the desired units of volume (dL) and the given units of mass (kg). You will need to express the density in kg/dL (1 cm = 1 mL) before calculating the volume for the piece of...
e. V.U50 mL c. 5.0 ml 31. How many moles of ammonium hydroxide are present in 100 mL of a 0.17 M solution? a. 1.7 x 10 moles d. 1.7 x 10 moles b. 5.8 x 10 moles e. 17 moles c. 1.7 moles
How many significant figures are there in the following values? a) 0.25 × 10^−5= b) 109.00= c) 0.07 × 10−9= d) 0.109=
b) None of these correct How many significant figures does 1261.60030 hava b) 8 9 D) 1,100 mm which distance measurement below is the longest? b) 795 um 0.003 km C 45,000 nm a) 84.3 d) Which 5. 3.70 x 10 Which number below does have the same number of significant figures for 0.420007 a) 0.0307 b) 0.0370 3 ) 37.000 d) 370 e
5. (3, 4, 3 points) Let A-a, b, c, d, e, f, g (a) how many closed binary operations f on A satisfy Aa, b)tc b) How many closed binary operations f on A have an identity and a, b)-c? (c) How many fin (b) are commutative? 6. 10 points) Suppose that R and R are equivalent relations on the set S. Determine whether each of the following combinations of R and R2 must be an equivalent relation. (a) R1...