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Question 3 4 pts How many significant figures should be in your answer when you convert...
Question 3 1 pts A substance that produces H+ ions when dissolved in water is a/an A substance that produces OH-ions when dissolved in water is a/an
To how many significant figures should each answer be rounded? (6.626 x 10-34 J·s) (2.9979 x 10 m/s) = 4.880610663391 x 10-19 J(unrounded) 4.070 x 10-'m equation A: After rounding, the answer to equation A should have 5 significant figures. 2 significant figures. O 1 significant figure. O 3 significant figures 4 significant figures. equation B: (6.022 x 1023 atoms/mol) (0.935 g) 20.18 g/mol = 2.790 x 10” atoms (unrounded) After rounding, the answer to equation B should have O...
3. (1 pts) How many significant figures in the following a) 350.0452 b) 0.004500 4. (2 pts) Convert the following from scientific notation to decimal or vice versa. Use correct sig tigs. a) 3.221 x 10 mm b) 0.000421 ml c) 6.4100 x 10 km d) 66,070 g 5. (2 pts) Mercury in thermometers freeze at -32.5°C. What is the temperature in degrees Fahrenheit? T = 9/5 T +32°F 2.54cm/1") 6. (2pts) Write the equality and conversion factors (ratios for...
Calculate:
Part A) [H+] for [OH−]=3.5×10^-4 M Express your
answer using two significant figures.
Part B) [H+] for [OH−] =8.4×10^-9 M Express
your answer using two significant figures.
Part C) Calculate [H+] for a solution in which [OH−] is 100
times greater than [H+].
Please show how you solved it, thanks!
Part A Calculate (H+] for Express your answer using two significant figures. VO AED ? Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining The ion-product...
To what decimal place should each answer be rounded? How many significant figures does the rounded answer have? a 9 cm + 2.8 cm-11.8 cm (unrounded) O 1 significant figure 2 significant figures O 3 significant figures o ones place er rounding, the number O tenths place and thus has should be reported to the O hundredths place b 0.135 atm 0.6 atm-0.735 atm (unrounded) O 1 significant figure. and thus has2 significant figures 3 significant figures O ones place...
To how many significant figures should each answer be rounded? Equation A: (6.626× 10−34 J⋅s)(2.9979× 108 m/s)4.290×10−7 m=4.630322937063×10−19 J(unrounded) After rounding, the answer to equation A should have *2 significant figures. *1 significant figure. *4 significant figures. *3 significant figures. *5 significant figures. Equation B: (6.022× 1023 atoms/mol)(0.795 g)20.18 g/mol=2.372×1022 atoms(unrounded) After rounding, the answer to equation B should have *1 significant figure. *3 significant figures. *5 significant figures. *2 significant figures. *4 significant figures.
To how many significant figures should cach ans wer be rounded? (6626 x 10-34 J) (2.9979 x 10 m/s) equation A: #4.290299222462 x 109 J (unroun 4.630 x 107 m rounding, the answer to equation A should have O 3 significant figures O 2 significant figures O5 significant figures. O4 significant figures. O1 significant figure t helpe hp ome 7 tachspacs G K ente pause N alt ctri V Σ (6.022 x 1023 atoms/mol) (0.737 g) equation B 2199 x...
Give your answer in microfarads, and to three significant figures. D Question 1 3 pts Find the capacitance (in nF) of a parallel plate capacitor having plates of area 1.4 m2 that are separated by 0.356 mm of Teflon
Part A 0.19 M NaOH Express your answer using two significant figures. Enter your answers numerically separated by commas. 30 AZ OO ? [OH-], H0+] - 5.3 • 10-14 Submit Previous Answers Request Answer Part B Express your answer to two decimal places. Enter your answers numerically separated by commas. © A ¢ O 2 ? pH. pOH = Submit Request Answer Part 2 Part C 1.4x10-3M Ca(OH), er using two significant figures. Enter your answers numerically shparated by commas....
Question 43 2 pts When adding 19.6, 4.79, and 5.819, the correct answer (with significant figures) is 30.2 O 30 30.209 30.21 Question 44 2 pts Given: H2S, H2SO4, H2SO3, HBrO4. Which of these are strong acids? O H2SO4 H2S H2SO4 H2SO3, and HBrO4 H2S, H2SO4, and H2SO3 Question 45 2 pts Which 1M solution would have the lowest pH? NaBr OKOH Sr(OH)2 O HNO3 Question 46 2 pts Isotopes of a given element have different number of neutrons but...