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I need the part B and i need the step bu step tha k
you....
ReviewPartA...
I just need help with Part D, thank you in advance. A copper wire has a...
I just need help with Part
D, thank you in advance.
A copper wire has a square cross section 2.02 mm on a side. The wire is 4.81 m long and carries a current of 4. 34 A The density of free electrons is 8.5 x 1028 m3 Part A Find the magnitude of the current density in the wire. Express your answer using three significant figures. J= 1.06x106 A/m2 Previous Answers Submit Correct Part B Find the magnitude of...
The pKa is 7.54. Acid is HClO. Part B If you have 500 mL of a 0.10 M solution of the acid, what mass of the correspondi...
The pKa is 7.54.
Acid is HClO.
Part B If you have 500 mL of a 0.10 M solution of the acid, what mass of the corresponding sodium salt of the conjugate base do you need to make the buffer with a pH of 7.68 (assuming no change in volume)? Express the mass to two significant figures and include the appropriate units. TI MÅ ? 0 2 Units m= | Value m =
I need help on A and B part Determine the number of significant figures in the...
I need help on A and B part
Determine the number of significant figures in the measurement 77.09 m. Express your answer numerically as an integer. Determine the number of significant figures in the measurement 0.007890 s. Express your answer numerically as an interger.
I finished Part A. I just need Part B. All the information needed should be there....
I finished Part A. I just need Part B. All the information
needed should be there.
Review I Constants I Periodic Table Part A Which of the following buffer systems would be the best choice to create a buffer with pH 9.10? HF/KF Ο ΗΝΟ/KN HNO2/KNO2 NH3/NH4 Cl о HСО/КCIO HCIO/KCIO Previous Answers Submit Correct The best buffer will be the one whose weak acid component has a pKa closest to the desired pH of the buffer. Since the pKa...
I need help with part B. Please show all of your steps. Thank You! Part A...
I need help with part B. Please show all of your steps. Thank
You!
Part A Calculate the speed of a proton after it accelerates from rest through a potential difference of 300 V Express your answer using two significant figures. Up 2.4x105 m/s Submit Correct Part B Calculate the speed of an electron after it accelerates from rest through a potential difference of 300 V Express your answer using two significant figures. m/s
Need help solving theses with step by step will be on a test so I really...
Need help solving theses with step by step will be on a test so I
really want to know how to them do. Thanks.
Part A Determine the mass of CO2 produced by burning enough of methane to produce 2.25 x10 kJ of heat. CH,(g)-, 2 O2(g) → CO2(g) + 2 H2O(g) dMrsn =-802.3 kJ Express your answer using three significant figures. Submit G Give Up Part B Determine the mass of CO2 produced by burning enough of ℃,Hs(g1+ 502(g)...
I need help with parts b and c. The second two pictures are for reference. KElectric...
I need help with
parts b and c. The second two pictures are for reference.
KElectric Potential and Capacitance Problem 18.67 Part B From your plot in Part A, determine the magnitude of the charge Express your answer in nanocoulombs to two significant figures. nC Submit Part C From your plot in Part A, determine the position of the charge Express your answer in meters to two significant figures ΑΣΦ blem 18.67 poaitive point charge Q is placed at a...
I need part B to be answered. PartA The ball is kicked from point A with...
I need part B to be answered.
PartA The ball is kicked from point A with the initial velocity UA 12 m/s . (Figure 1) Determine the range R when the ball strikes the ground. Express your answer to three significant figures and include the appropriate units. R12.7 m Correct Significant Figures Feedback: Your answer 12.67 m was either rounded differently or used a different number of significant figures than required for this part. Part B Determine the speed when...
i need help woth this!! Part A K. From the value Ke = 1.2 x 10°...
i need help woth this!!
Part A K. From the value Ke = 1.2 x 10° for Ni(NH3).2+, calculate the concentration of NH3 required to just dissolve 0.024 mol of NiC 04 (K,p = 4 x 10-1) in 1.00 L of solution. (Hint: You can neglect the hydrolysis of C,0,2- because the solution will be quite basic.) Express your answer using two significant figures. Iyo AEO ? (NH3) = 0.37 M Submit Previous Answers Request Answer
I need help Sewani 1151 <EC Ch 6-7 Problem 7.30 Part A Calculate the number of...
I need help
Sewani 1151 <EC Ch 6-7 Problem 7.30 Part A Calculate the number of Li atoms in 5.6 moles of Li Express your answer using two significant figures. νοΙ ΑΣφ ? NI; = 3.4 atoms of Li Submit Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining Part B Calculate the number of CO2 molecules in 2.25x 10-2 mole of CO2 Express your answer using three significant figures. EVO AED ? Noo;- molecules of co Type...
I just need help with Part
D, thank you in advance.
A copper wire has a square cross section 2.02 mm on a side. The wire is 4.81 m long and carries a current of 4. 34 A The density of free electrons is 8.5 x 1028 m3 Part A Find the magnitude of the current density in the wire. Express your answer using three significant figures. J= 1.06x106 A/m2 Previous Answers Submit Correct Part B Find the magnitude of...
The pKa is 7.54.
Acid is HClO.
Part B If you have 500 mL of a 0.10 M solution of the acid, what mass of the corresponding sodium salt of the conjugate base do you need to make the buffer with a pH of 7.68 (assuming no change in volume)? Express the mass to two significant figures and include the appropriate units. TI MÅ ? 0 2 Units m= | Value m =
I need help on A and B part
Determine the number of significant figures in the measurement 77.09 m. Express your answer numerically as an integer. Determine the number of significant figures in the measurement 0.007890 s. Express your answer numerically as an interger.
I finished Part A. I just need Part B. All the information
needed should be there.
Review I Constants I Periodic Table Part A Which of the following buffer systems would be the best choice to create a buffer with pH 9.10? HF/KF Ο ΗΝΟ/KN HNO2/KNO2 NH3/NH4 Cl о HСО/КCIO HCIO/KCIO Previous Answers Submit Correct The best buffer will be the one whose weak acid component has a pKa closest to the desired pH of the buffer. Since the pKa...
I need help with part B. Please show all of your steps. Thank
You!
Part A Calculate the speed of a proton after it accelerates from rest through a potential difference of 300 V Express your answer using two significant figures. Up 2.4x105 m/s Submit Correct Part B Calculate the speed of an electron after it accelerates from rest through a potential difference of 300 V Express your answer using two significant figures. m/s
Need help solving theses with step by step will be on a test so I
really want to know how to them do. Thanks.
Part A Determine the mass of CO2 produced by burning enough of methane to produce 2.25 x10 kJ of heat. CH,(g)-, 2 O2(g) → CO2(g) + 2 H2O(g) dMrsn =-802.3 kJ Express your answer using three significant figures. Submit G Give Up Part B Determine the mass of CO2 produced by burning enough of ℃,Hs(g1+ 502(g)...
I need help with
parts b and c. The second two pictures are for reference.
KElectric Potential and Capacitance Problem 18.67 Part B From your plot in Part A, determine the magnitude of the charge Express your answer in nanocoulombs to two significant figures. nC Submit Part C From your plot in Part A, determine the position of the charge Express your answer in meters to two significant figures ΑΣΦ blem 18.67 poaitive point charge Q is placed at a...
I need part B to be answered.
PartA The ball is kicked from point A with the initial velocity UA 12 m/s . (Figure 1) Determine the range R when the ball strikes the ground. Express your answer to three significant figures and include the appropriate units. R12.7 m Correct Significant Figures Feedback: Your answer 12.67 m was either rounded differently or used a different number of significant figures than required for this part. Part B Determine the speed when...
i need help woth this!!
Part A K. From the value Ke = 1.2 x 10° for Ni(NH3).2+, calculate the concentration of NH3 required to just dissolve 0.024 mol of NiC 04 (K,p = 4 x 10-1) in 1.00 L of solution. (Hint: You can neglect the hydrolysis of C,0,2- because the solution will be quite basic.) Express your answer using two significant figures. Iyo AEO ? (NH3) = 0.37 M Submit Previous Answers Request Answer
I need help
Sewani 1151 <EC Ch 6-7 Problem 7.30 Part A Calculate the number of Li atoms in 5.6 moles of Li Express your answer using two significant figures. νοΙ ΑΣφ ? NI; = 3.4 atoms of Li Submit Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining Part B Calculate the number of CO2 molecules in 2.25x 10-2 mole of CO2 Express your answer using three significant figures. EVO AED ? Noo;- molecules of co Type...
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