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There are more atoms in 1.00 mole of magnesium than in 1.00 mole of carbon. Question...
Question 21 4 pts 21. Consider the two elements carbon and magnesium. In comparing 1.00 mole...
Question 21 4 pts 21. Consider the two elements carbon and magnesium. In comparing 1.00 mole of carbon atoms to 1.00 mole of magnesium atoms, which statement is true? There are fewer atoms in 1.00 mole of magnesium than in 1.00 mole of carbon. The mass of 1.00 mole of carbon is less than the mass of 1.00 mole of magnesium The mass of 1.00 mole of carbon is greater than the mass of 1,00 mole of magnesium. The mass...
19. One nanogram does not seem like a very large number. How many magnesium atoms are there in 1.00 ng of magnesium...
19. One nanogram does not seem like a very large number. How many magnesium atoms are there in 1.00 ng of magnesium? A) 4.11 x 10 atoms B) 2.48 x 10" atoms C) 6.83 x 10 atoms D) 6.02 x 10" atoms E) 1.46 x 104 atoms 20. How many moles of O atoms are in 25.7 g of CaSO.? A) 0.189 mol B) 0.755 mol C) 4.00 mol D) 1.14 x 10^mol E) 4.55 x 10" mol 21. Balance...
can you please explain the answers 19. One nanogram does not seem like a very large number. How many magnesium atoms...
can you please explain the answers
19. One nanogram does not seem like a very large number. How many magnesium atoms are there in 1.00 ng of magnesium? A) 4.11 x 10- atoms B) 2.48 x 10" atoms C) 6.83 x 10" atoms D) 6.02 x 10 atoms E) 1.46 x 10" atoms 20. How many moles of O atoms are in 25.7 g of CaSO.? A) 0.189 mol B) 0.755 mol C) 4.00 mol D) 1.14 x 10” mol...
moles of C. 6) 0.400 mole of sucrose, C12H22011. contains A) 12 B) 6.02 x 1023...
moles of C. 6) 0.400 mole of sucrose, C12H22011. contains A) 12 B) 6.02 x 1023 C) 5.02 x 1022 D) 2.89 x 1024 E) 4.80 7) How many moles of carbon atoms are there in 0.500 mole of C2H6? A) 0.500 mole B) 1.00 mole C) 3.00 moles D) 6.02 x 1023 moles E) 4.00 moles 8) Calculate the molar mass of magnesium chloride, Mg (12. A) 24.31 g/mole B) 95.21 g/mole C) 125.9 g/mole D) 59.76 g/mole E)...
File Ed Yew ranoform e Srepha Anaivza Custom Hours Work GPA Absences yar ed less than...
File Ed Yew ranoform e Srepha Anaivza Custom Hours Work GPA Absences yar ed less than 1... 3.00 4.00 less than 1.. 2 4.00 2.00 less than 1... 2.50 3.00 less than 1.. 3.80 1.00 less than 1.. 2.70 2.00 less than 1. 3.20 5.00 7 less than 1. 4.00 6.00 less than 1.. 8 3.80 7.00 less than 1... 2.90 9.00 10 less than 1... 3.10 4.00 11 less than 1. 3.10 7.00 12 less than 1... 2.00 8.00...
Question 4 Not changed since last attempt Marked out of 1.00 Calculate w (in kJ) when 189 g iron (III) oxide (MM =...
Question 4 Not changed since last attempt Marked out of 1.00 Calculate w (in kJ) when 189 g iron (III) oxide (MM = 159.7 g/mol) reacts with excess carbon to produce carbon dioxide gas at 451 K: 2Fe2O3(s) + 3C(s) + 4Fe(s) + 3CO2(g) P Flag question Answer: Question 5 Not yet answered Calculate the work (in kJ) when 2.20 moles of methane react with excess oxygen at 470 K: Marked out of 1.00 CH4(g) + 20 (g) + CO2(g)...
Question 13 Partially correct Mark 0.58 out of 1.00 P Flag question Computation of Variable Cost...
Question 13 Partially correct Mark 0.58 out of 1.00 P Flag question Computation of Variable Cost Variances The following information pertains to the standard costs and actual activity for Tyler Company for September: Standard cost per unit Direct materials 4 units of material A $2.00 per unit 1 unit of material B $3.00 per unit Direct labor 3 hours $8.00 per hour Activity for September Materials purchased Material A 3,400 units * $2.05 per unit Material B 800 units x...
6. Calculate each of the following: a. the number of atoms in 0.5 mol ofc b...
6. Calculate each of the following: a. the number of atoms in 0.5 mol ofc b the number of So, molecules in 1.28 mol of SO c. the moles of Fe in a sample containing 5.22 x10 - atoms of Fe 7. Calculate the molar mass for each of the following use the periodic table for the atomic mass): H2SO4 Fe2O3 Al(SO.) Mg(OH)2 (NH4)2CO3 8. How many moles of Cl2 are there in 25 g of Ciz? 9. How many...
I was wondering if someone could help me with problems on my test my teacher allows me to correct the wrong ones t...
I was wondering if someone could help me with problems on my
test my teacher allows me to correct the wrong ones then give them
back for half credit. Along with the correct answer for each I’d
like to know why the answer I chose is wrong what is the correct
answer and why it is the correct answer. The marked red problems
are the incorrect problems.
17. Which of the following generally indicates the possibility of a chemical change?...
I need each question answered. #6-12 6. Calculate the number of nitrogen atoms are present in...
I need each question answered. #6-12
6. Calculate the number of nitrogen atoms are present in each of the following quantities. A) 8.45x10 kg nitric acid B) 1280 dg of calcium nitrate 7. Write the empirical formula of the following compounds. A) H2S2 D) Co:PO B) ZnP203 E) C:H16012 C) C12H1oCl2 F) Au204 8. First balance the equation below the answer the questions that follow. ZrCN(aq) + Al2(S2O3)3(aq) — Zr2S2O3(s) + A) How many moles of ZnSO, of can form...
Question 21 4 pts 21. Consider the two elements carbon and magnesium. In comparing 1.00 mole of carbon atoms to 1.00 mole of magnesium atoms, which statement is true? There are fewer atoms in 1.00 mole of magnesium than in 1.00 mole of carbon. The mass of 1.00 mole of carbon is less than the mass of 1.00 mole of magnesium The mass of 1.00 mole of carbon is greater than the mass of 1,00 mole of magnesium. The mass...
19. One nanogram does not seem like a very large number. How many magnesium atoms are there in 1.00 ng of magnesium? A) 4.11 x 10 atoms B) 2.48 x 10" atoms C) 6.83 x 10 atoms D) 6.02 x 10" atoms E) 1.46 x 104 atoms 20. How many moles of O atoms are in 25.7 g of CaSO.? A) 0.189 mol B) 0.755 mol C) 4.00 mol D) 1.14 x 10^mol E) 4.55 x 10" mol 21. Balance...
can you please explain the answers
19. One nanogram does not seem like a very large number. How many magnesium atoms are there in 1.00 ng of magnesium? A) 4.11 x 10- atoms B) 2.48 x 10" atoms C) 6.83 x 10" atoms D) 6.02 x 10 atoms E) 1.46 x 10" atoms 20. How many moles of O atoms are in 25.7 g of CaSO.? A) 0.189 mol B) 0.755 mol C) 4.00 mol D) 1.14 x 10” mol...
moles of C. 6) 0.400 mole of sucrose, C12H22011. contains A) 12 B) 6.02 x 1023 C) 5.02 x 1022 D) 2.89 x 1024 E) 4.80 7) How many moles of carbon atoms are there in 0.500 mole of C2H6? A) 0.500 mole B) 1.00 mole C) 3.00 moles D) 6.02 x 1023 moles E) 4.00 moles 8) Calculate the molar mass of magnesium chloride, Mg (12. A) 24.31 g/mole B) 95.21 g/mole C) 125.9 g/mole D) 59.76 g/mole E)...
File Ed Yew ranoform e Srepha Anaivza Custom Hours Work GPA Absences yar ed less than 1... 3.00 4.00 less than 1.. 2 4.00 2.00 less than 1... 2.50 3.00 less than 1.. 3.80 1.00 less than 1.. 2.70 2.00 less than 1. 3.20 5.00 7 less than 1. 4.00 6.00 less than 1.. 8 3.80 7.00 less than 1... 2.90 9.00 10 less than 1... 3.10 4.00 11 less than 1. 3.10 7.00 12 less than 1... 2.00 8.00...
Question 4 Not changed since last attempt Marked out of 1.00 Calculate w (in kJ) when 189 g iron (III) oxide (MM = 159.7 g/mol) reacts with excess carbon to produce carbon dioxide gas at 451 K: 2Fe2O3(s) + 3C(s) + 4Fe(s) + 3CO2(g) P Flag question Answer: Question 5 Not yet answered Calculate the work (in kJ) when 2.20 moles of methane react with excess oxygen at 470 K: Marked out of 1.00 CH4(g) + 20 (g) + CO2(g)...
Question 13 Partially correct Mark 0.58 out of 1.00 P Flag question Computation of Variable Cost Variances The following information pertains to the standard costs and actual activity for Tyler Company for September: Standard cost per unit Direct materials 4 units of material A $2.00 per unit 1 unit of material B $3.00 per unit Direct labor 3 hours $8.00 per hour Activity for September Materials purchased Material A 3,400 units * $2.05 per unit Material B 800 units x...
6. Calculate each of the following: a. the number of atoms in 0.5 mol ofc b the number of So, molecules in 1.28 mol of SO c. the moles of Fe in a sample containing 5.22 x10 - atoms of Fe 7. Calculate the molar mass for each of the following use the periodic table for the atomic mass): H2SO4 Fe2O3 Al(SO.) Mg(OH)2 (NH4)2CO3 8. How many moles of Cl2 are there in 25 g of Ciz? 9. How many...
I was wondering if someone could help me with problems on my
test my teacher allows me to correct the wrong ones then give them
back for half credit. Along with the correct answer for each I’d
like to know why the answer I chose is wrong what is the correct
answer and why it is the correct answer. The marked red problems
are the incorrect problems.
17. Which of the following generally indicates the possibility of a chemical change?...
I need each question answered. #6-12
6. Calculate the number of nitrogen atoms are present in each of the following quantities. A) 8.45x10 kg nitric acid B) 1280 dg of calcium nitrate 7. Write the empirical formula of the following compounds. A) H2S2 D) Co:PO B) ZnP203 E) C:H16012 C) C12H1oCl2 F) Au204 8. First balance the equation below the answer the questions that follow. ZrCN(aq) + Al2(S2O3)3(aq) — Zr2S2O3(s) + A) How many moles of ZnSO, of can form...
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