The zero at the end is still a significant figure because the final zeros to the right of the decimal point are significant. {eq}0.059 {/eq} has 2 significant figures.

2023年11月21日 · Here are three examples of significant figures: (1) 12,564,000: has 5 significant figures, counting all the non-zero digits, (2) 12.0000 has 6 significant figures, counting all non-zeros and all ...

Calculate the pH of a buffer that contains 0.60 M NaHCO3 and 0.72 M Na2CO3. A) Find the pH of a 0.284 M NaF solution. (The Ka of hydrofluoric acid, HF, is 3.5* 10-4.) B) Determine the [OH-] of a 0.26 M solution of NaHCO3. Express your answer using two significant figures. - Calculate the pH of a buffer that is 0.105 M in NaHCO_3 and 0.125 M in ...

a. Evaluate (754 mm)/(39 sec) to three significant figures and express the answer in SI units using an appropriate prefix. b. Evaluate (27 ms)(0.056 Mm)/(348 mg) to three significant figures. c. Evalu; State the number of significant figures in the number 6.032. State the number of significant figures in the number 0.0006032. 1.

The temperature in Celsius is known to two significant figures. What is the molar mass of a compound if a gaseous sample has a density of 0.361 g/L at 21 ^oC and 328 torr? Given that the density of air at 740 torr and 27^o C is 1.145 grams per liter, Calculate the mole fraction and partial pressure of nitrogen and oxygen assuming the following ...

Significant Figures: The first significant figure in a number is the first non-zero digit. When dividing or multiplying numbers, the answer takes the same number of significant figures as the number with the least number of significant figures. Answer and Explanation: 1

Determine the number of significant figures in the measurement 600 mL. Determine the number of significant figures present in 6.310 J. Using the rules of significant figures, calculate the following: 83.28 - 3.2 \\ A. 80 B. 80. C. 80.0 D. 80.08 E. 80.1; Using the rules of significant figures, calculate the following: 6.167 + 81 / 5.10 =

The number of significant figures in the answer to the following calculation is 12.011g - 11.11g + 2.412 a) 1 b) 2 c) 3 d) 4 e) 5; Using the rules of significant figures, calculate the following: \\ 7.720 - 0.021; Calculate the following using the correct number of significant figures: 1.012 x 10-3 J / (0.022456 g)(298.3682 - 298.3567) K

Calculate the mass of KHP that will exactly react with 15.75 mL of 0.218 M NaOH. Show the complete calculation to the correct number of significant figures. Calculate the mass of KHP (molar mass 204.44 g/mol) that reacts with 15.0 mL of the 0.15 ''M'' NaOH solution (molar mass 40.00 g/mol) required for standardization of the NaOH solution.

Calculate correct to 4 significant figures the percent loss of mass upon heating CaCl_2 cdot 2H_2O to an anhydrous form. In the following stoichiometry problem, How does 4.5 moles of H2O cancel out 2 moles of H20 once the problem is set up? How many moles of O2 is used when 4.5 moles of water is produced according to t