Question 4 5 pts Complete the following calculations and round each result to the correct number...
4. pH Calculations. Show all work and round to the correct number of significant figures. a. What is the pH of a 5 x 10-14 M hydronium ion solution? b. What is the pH of a .26 M hydroxide ion solution?
Question 26 (5 points) Saved The following calculation is carried out reported to the correct number of significant figures. (12.25 + 1.00008)x(1.1) = How many significant figures should the final answer be rounded to? 2. 4 6
What is the frequency of light (in Hz) of a photon emitted when an electron in a hydrogen atom undergoes a transition from the n = 6 energy state to the n = 2 energy state? Express your answer to two significant figures. TIP: To report an answer in scientific notation, enter it using the format "2.364", which means "2.3 x 104" (without the quotation marks) Answer: What is the frequency of light (in Hz) of a photon emitted when...
i need help with questions 4, 5, 13, 15, 16 6 pts Question 4 Perform each of the following calculations of the measured numbers and express your answer rounded to the appropriate number of significant figures. Only type the number for the final answer in the box (no units). a) 67.50 mL - 35.50 mL mL b) 5.35 cm x 10.00 cm x 0.50 cm = cm Question 5 4 pts A scientist defines a new unit, the mini-meter, which...