1. A 62.0 sample contains 46.171 g chlorine and the rest magnesium. What is the percent...
1. A 62.0 sample contains 46.171 g chlorine and the rest magnesium. What is the percent magnesium is in this sample? Enter the number and the unit.
2. A sample contains 15.18 g aluminum and 59.82 g chlorine. What is the percent aluminum is in this sample? Enter the number and the unit.
3. An 85.0 sample contains 24.718 g sulfur and the rest potassium. What is the percent potassium is in this sample? Enter the number and the unit.
4. A 62.0 sample contains 15.829 g magnesium and the rest chlorine. What is the percent chlorine is in this sample? Enter the number and the unit.
Homework Answers
percentage has no unit.
If percentage of one comment is given in case of two component system them we can get percentage of other components.
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1. A 62.0 sample contains 46.171 g chlorine and the rest
magnesium. What is the percent...
a 8.18g sample of a compound contains 2.61g of potassium K, 2.37 g of chlorine, Cl,...
a 8.18g sample of a compound contains 2.61g of potassium K, 2.37 g of chlorine, Cl, and oxygen O. calculate the empirical formula
1. Calculate the number of moles of magnesium, chlorine, and oxygen atoms in 3.80 moles of...
1. Calculate the number of moles of magnesium, chlorine, and
oxygen atoms in 3.80 moles of magnesium perchlorate, Mg(ClO4)2.
Express the number of moles of Mg, Cl, and O atoms numerically,
separated by commas.
2. A sample of propane, C3H8, contains 10.4 moles of carbon
atoms. How many total moles of atoms does the sample contain?
Express the total number of moles of carbon and hydrogen
numerically.
One molecule of ozone, O3, contains three oxygen atoms. Similarly, 1 mole of...
One molecule of ozone, O3, contains three oxygen atoms. Similarly, 1 mole of ozone contains 3...
One molecule of ozone, O3, contains three oxygen atoms. Similarly, 1 mole of ozone contains 3 moles of oxygen atoms. We can use this mole ratio to create two conversion factors: 3 moles O1 mole O3 and 1 mole O33 moles O Here's how to find the number of moles of oxygen atoms in 2 moles of ozone: 2 moles O3×3 moles O1 mole O3= 6 moles O Part A Calculate the number of moles of aluminum, sulfur, and oxygen...
part 1) An aqueous solution of magnesium nitrate, Mg(NO3)2, contains 2.03 grams of magnesium nitrate and...
part 1) An aqueous solution of magnesium nitrate, Mg(NO3)2, contains 2.03 grams of magnesium nitrate and 17.8 grams of water. The percentage by mass of magnesium nitrate in the solution is %. part 2) The mole fraction of lead acetate, Pb(CH3COO)2, in an aqueous solution is 1.80×10-2 . The percent by mass of lead acetate in the solution is %. part 3) An aqueous solution is 40.0 % by mass potassium bromide, KBr, and has a density of 1.37 g/mL. The mole...
Exp 9 Translating Word Equations into Balanced Chanical Equations A. Combination Reactions Instructor Demonstrations 1. magnesium(s)...
Exp 9 Translating Word Equations into Balanced Chanical Equations A. Combination Reactions Instructor Demonstrations 1. magnesium(s) + oxygen(g) magnesium oxide(s) + 02() 4 Mg(s) 2. sulfur(s) + oxygen(g) 4 sulfur dioxide(g) S(8) + O2(E) B. Decomposition Reactions 1. copper(II) sulfate pentahydrate(s) copper(II) sulfate(s) + water(s) CuSO4.5H20() 2. sodium hydrogen carbonate(s) 4 sodium carbonate(s) + water(g) + carbon dioxide(g) NaHCO3(-) C. Single-Replacement Reactions 1. copper(s) + silver nitrate(aq) + copper(II) nitrate(aq) + silver(s) Cu() + AgNO3(aq) → 2. magnesium(s) + hydrochloric...
Do sample problem 13.10 in the 8th ed of Silberberg. A 0.892 g sample of magnesium chloride dissolves in 96 g of w...
Do sample problem 13.10 in the 8th ed of Silberberg. A 0.892 g sample of magnesium chloride dissolves in 96 g of water in a flask. =CH- . = Mg2+ How many moles of Cl-? Enter to 4 decimal places. Question 10 1p Do sample problem 13.10 in the 8th ed of Silberberg. A 0.946 g sample of magnesium chloride dissolves in 83.5 g of water in a flask. = CH = Mg2+ Assuming the solution is ideal, what is...
1. How many moles of Cl are there in a sample that contains 6.20x1022 chlorine atoms?...
1. How many moles of Cl are there in a sample that contains 6.20x1022 chlorine atoms? moles 2. How many chlorine atoms are there in a sample that contains 2.66 mol of Cl? atoms
Calculate the osomolarity of 0.5 g/mL of magnesium sulfate heltahydrate (MgSO4*7H2O) MW= 246.47 g/mol Calculate the o...
Calculate the osomolarity of 0.5 g/mL of magnesium sulfate
heltahydrate (MgSO4*7H2O) MW= 246.47 g/mol
Calculate the osmolarity of 1 Liter of solution that contains
40mEq of sodium, 20 mEq of potassium, 60 mEq of chlorine and 5% w/v
of dextrose (mol way: 180 non-electrolyte).
My teacher gave me the answer but I didn't understand how they
got it. thank you.
2. Calculate the osmolarity of 0.5 g/mL of magnesium sulfate heptahydrate - MgSOa.7H20 MW-246.47 g/mol 0.59 Calculate the osmolarity of...
Question 1 1 pts Fine wires of magnesium burn readily in oxygen to produce magnesium oxide....
Question 1 1 pts Fine wires of magnesium burn readily in oxygen to produce magnesium oxide. If 15.8 g of Mg are reacted with 9.69 g of Oz in a sealed reaction vessel, what is the mass of MgO produced? (Fill in only number, 3 sig figs) Question 2 1 pts Manganese(II) sulfate is produced in the following reaction: 5 H2C204(aq) + 2 KMnO4(aq) + 3 H2SO4 (aq) → 10C026 + 2 MnSO4(09) + K3504 (aq) + 8 H20 10...
Question 1 1 pts Calculate the mass of potassium chloride, KCI, (in grams) formed when 7.00 g of chlorine gas is allowe...
Question 1 1 pts Calculate the mass of potassium chloride, KCI, (in grams) formed when 7.00 g of chlorine gas is allowed to react with 5.00 g of potassium. (write the chemical reaction first) 7.36 7.38 14.7 4.77 9.53 Question 2 1 pts Carbon dioxide is produced in the following reaction: 5 H2C204(aq) + 2 KMnO4 (aq) + 3 H2SO4 (aq) → 10 CO2(g) + 2 MnSO4 (aq) + K2SO4 (aq) + 8 H20 (1) What is the limiting reagent...
1. Calculate the number of moles of magnesium, chlorine, and
oxygen atoms in 3.80 moles of magnesium perchlorate, Mg(ClO4)2.
Express the number of moles of Mg, Cl, and O atoms numerically,
separated by commas.
2. A sample of propane, C3H8, contains 10.4 moles of carbon
atoms. How many total moles of atoms does the sample contain?
Express the total number of moles of carbon and hydrogen
numerically.
One molecule of ozone, O3, contains three oxygen atoms. Similarly, 1 mole of...
Exp 9 Translating Word Equations into Balanced Chanical Equations A. Combination Reactions Instructor Demonstrations 1. magnesium(s) + oxygen(g) magnesium oxide(s) + 02() 4 Mg(s) 2. sulfur(s) + oxygen(g) 4 sulfur dioxide(g) S(8) + O2(E) B. Decomposition Reactions 1. copper(II) sulfate pentahydrate(s) copper(II) sulfate(s) + water(s) CuSO4.5H20() 2. sodium hydrogen carbonate(s) 4 sodium carbonate(s) + water(g) + carbon dioxide(g) NaHCO3(-) C. Single-Replacement Reactions 1. copper(s) + silver nitrate(aq) + copper(II) nitrate(aq) + silver(s) Cu() + AgNO3(aq) → 2. magnesium(s) + hydrochloric...
Do sample problem 13.10 in the 8th ed of Silberberg. A 0.892 g sample of magnesium chloride dissolves in 96 g of water in a flask. =CH- . = Mg2+ How many moles of Cl-? Enter to 4 decimal places. Question 10 1p Do sample problem 13.10 in the 8th ed of Silberberg. A 0.946 g sample of magnesium chloride dissolves in 83.5 g of water in a flask. = CH = Mg2+ Assuming the solution is ideal, what is...
1. How many moles of Cl are there in a sample that contains 6.20x1022 chlorine atoms? moles 2. How many chlorine atoms are there in a sample that contains 2.66 mol of Cl? atoms
Calculate the osomolarity of 0.5 g/mL of magnesium sulfate
heltahydrate (MgSO4*7H2O) MW= 246.47 g/mol
Calculate the osmolarity of 1 Liter of solution that contains
40mEq of sodium, 20 mEq of potassium, 60 mEq of chlorine and 5% w/v
of dextrose (mol way: 180 non-electrolyte).
My teacher gave me the answer but I didn't understand how they
got it. thank you.
2. Calculate the osmolarity of 0.5 g/mL of magnesium sulfate heptahydrate - MgSOa.7H20 MW-246.47 g/mol 0.59 Calculate the osmolarity of...
Question 1 1 pts Fine wires of magnesium burn readily in oxygen to produce magnesium oxide. If 15.8 g of Mg are reacted with 9.69 g of Oz in a sealed reaction vessel, what is the mass of MgO produced? (Fill in only number, 3 sig figs) Question 2 1 pts Manganese(II) sulfate is produced in the following reaction: 5 H2C204(aq) + 2 KMnO4(aq) + 3 H2SO4 (aq) → 10C026 + 2 MnSO4(09) + K3504 (aq) + 8 H20 10...
Question 1 1 pts Calculate the mass of potassium chloride, KCI, (in grams) formed when 7.00 g of chlorine gas is allowed to react with 5.00 g of potassium. (write the chemical reaction first) 7.36 7.38 14.7 4.77 9.53 Question 2 1 pts Carbon dioxide is produced in the following reaction: 5 H2C204(aq) + 2 KMnO4 (aq) + 3 H2SO4 (aq) → 10 CO2(g) + 2 MnSO4 (aq) + K2SO4 (aq) + 8 H20 (1) What is the limiting reagent...
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