What is the molarity when 47 g of KCl dissolved in enough water to give 375...
answer with two sig figs scientific notation QB 15.10 Level 1 Homework. Unanswered In an aqueous solution, if the [OH-] is 7.5E-9 M what is the [H30+)? 0 Respond with the correct number of significant figures in scientific notation (Use E notation and only 1 digit before decimal e.g. 2.5E5 for 2.5 x 105) Numeric Answer: Unanswered . 2 attempts left Submit In an aqueous solution, if the [H3O+] is 7.1E-9 M what is the [OH-]? Respond with the correct...
USE CORRECT SIG FIGS AND SCIENTIFIC NOTATION Determine the molar (M) concentration of a solution made by dissolving 7.714E1 g of CaCl2 in sufficient water to make 250.0 mL of solution. Respond with the correct number of significant figures in scientific notation (Use E notation and only 1 digit before decimale.g. 2.5E5 for 2.5 x 105) Numeric Answer: Determine the number of grams of potassium permanganate present in 5.25E1 mL of a 0.250 M KMnO4(aq) solution. 0 Respond with the...
HQ3.01 Homework - Unanswered How many moles of oxygen atoms are in 9.2E-1 moles of CO2? Only give the numeric value of your answer. Don't include the units. Respond with the correct number of significant figures in scientific notation (Use Enotation and only 1 digit before decimale.g.2.585 for 2.5 x 10") Numeric Answer
QB 2.51 Level 2 Homework • Unanswered What is the mass of 375 calcium phosphate formula units, Ca3(PO4)2, in grams? Respond with the correct number of significant figures in scientific notation (Use Enotation and only 1 digit before Numeric Answer: Unanswered
How many moles of Nare there in 0.251 g of N,O? O Respond with the correct number of significant figures in scientific notation (Use Enotation and only 1 digit before decimale. 2.SES for 2.5x 10" Numeric Answer Cannot be empty
Calculate [HO] for a solution of pH 4.3. Use "E" for scientific notation. Respond with the correct number of significant figures in scientific notation (Use Enotation and only 1 digit before decimale.g. 2.5e5 for 25x1 Type your response
Homework - Answered Fill in the Blanks Based on the best Lewis structures you chose in question 2, the SCl2 molecule has O molecular geometry with bond angles of degrees. Hint T13HW Question 11 Homework. Unanswered How many moles of Nare there in 0.251 g of N2O? Respond with the correct number of significant figures in scientific notation (Use Enotation and only 1 digit before decimale.g. 2.5E5 for 2.5 x 10") Numeric Answer: 0.00570 Unanswered Submit
What is the pH of a 0.67 M HBr solution? © Respond with the correct number of significant figures in scientific notation (Use Enotation and only 1 digit before decimale.g. 2.5e5 for 25 x 10 Type your response
Calculate the number of moles equivalent to 5.4 x 1023 atoms of helium. Note: Be sure to use the correct number of significant figures. 0 Respond with the correct number of significant figures in scientific notation (Use Enotation and only 1 digit before decimaleg 2.55 for 2.5 x 107 Numeric Answer:
What is the resulting pH of a solution made by mixing 10.0 mL of an HCl(aq) solution having a pH of 2.00 with 10.0 mL of an HCl(aq) solution having a pH of 6.00? Numeric Answer: Unanswered • 2 attempts left Submit Calculate the pOH of a 7.0E0 M NACH3CO2 (aq) solution. The Ke of acetic acid is 1.8x10-5. 0 Respond with the correct number of significant figures in scientific notation (Use Enotation and only 1 digit before decimal e.g....