4.98 ppm means , 106 mL solution contains 4.98 g F-.
Molarity = 4.98/19×103
= 0.26 mM
Answer = 0.26
Express 4.98 ppm F as mM F. Report the result to the hundredths of a mM...
4 of 16> Solve for x. 375 5x3 Express the answer to the hundredths place (i.e., two digits after the decimal point). ho 80 144
Calculate the pH of 6.0 times 10^-8 M HCI. Report your answer to the hundredths place. What fraction of the total H+ in this solution is from the HCI? Report your answer to the hundredths place.
Attempt Solve for x. 405-5x Express the answer to the hundredths place (i.e., two digits after the decimal point) x=11 140.30 3 9
Two 3.5 mm x 3.5 mm electrodes are held 0.10 mm apart and are attached to 7.0 V battery. Without disconnecting the battery, a 0.10-mm-thick sheet of Mylar is inserted between the electrodes.Part A What is the capacitor's potential difference before the Mylar is inserted? Express your answer with the appropriate units. Part B What is the capacitor's electric field before the Mylar is inserted? Express your answer with the appropriate units. Part C What is the capacitor's charge before the Mylar...
An EDM instrument has a purported accuracy capability of ±(3.0 mm + 0.5 ppm). (Assume that the instrument and target miscentering errors are equal to zero.) A. What error can be expected in a measured distance of 12 m? Express your answer to three significant figures and include the appropriate units. b. What error can be expected in a measured distance of 581.50 ft? c.What error can be expected in a measured distance of 402.579 m?
TWO 4.0 mm x 4.0 mm electrodes are held 0.10 mm apart and are attached to 7.5 V battery. Without disconnecting the battery, a 0.10-mm-thick sheet of Mylar is inserted between the electrodes. What is the capacitor's charge before the Mylar is inserted? Express your answer with the appropriate units. o o ? CHÅR Q= 4.955 • 10-11 C Submit Previous Answers Request Answer X Incorrect; Try Again; 2 attempts remaining Part D | Part E Part F What is...
2. 00 mm 310 mm 140 mm Two forces, each with magnitude F 290 N, are applied to the wrenches. Calculate the moment vector of the couple. Express the result in vector notation. Hint: use the right hand rule to locate the +z axis NOTES | | IMAGES | | Discuss | | uNTS | | STATS | | HELP | Part Description Answer Chk History Calculate the x component of the moment vector of the couple. (include units with...
A) Calculate [H3O+][H3O+] for solution 1.85×10−3 MM HNO3.HNO3. Express your answer to three significant figures and include the appropriate units. B) Calculate [OH−][OH−] for solution 1.85×10−3 MM HNO3.HNO3. Express your answer to two significant figures and include the appropriate units. C) Calculate [OH−][OH−] for solution 2.9×10−3 MM KOHKOH. Express your answer to two significant figures and include the appropriate units. D) Calculate [H3O+][H3O+] for solution 2.9×10−3 MM KOHKOH. Express your answer to two significant figures and include the appropriate units....
Two 5.5 mm x 5.5 mm electrodes are held 0.10 mm apart and are attached to 8.0 V battery. Without disconnecting the battery, a 0.10-mm-thick sheet of Mylar is inserted between the electrodes. - Part D What is the capacitor's potential difference after the Mylar is inserted? Express your answer with the appropriate units. ? Å Value N O a Units AVc = Submit Request Answer Part E What is the capacitor's electric field after the Mylar is inserted? Express...
fluoridation accurate as a result of addition of NaFto water. Suppose the desired cocentratioco of F- is 0.3 ppm. Calculate how many milliligrams of NaF should be added per gallon of treated water if the water supply already has 0.01 ppm in F-? (1 gallon = 3.786L)