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A.S' B. Si C. AU D.Ag E. SI 25. Predict the charge that a calcium ion...
a.) how many moles of iron is 66.8 g of Fe? __________________ mol Fe b.) How...
a.) how many moles of iron is 66.8 g of Fe? __________________ mol Fe b.) How many grams of iron is 4.89 x 10-2 mol Fe? __________________ g Fe c.) How many atoms are present in 0.950 mol of uranium? _________________ x10 _________________ U atoms d.) 3.84 × 106 sulfur atoms is how many moles? __________________ x10 _______________ moles
Make sure Do all.. I want all answers 1) An ionic bond is best described as...
Make sure Do all.. I want all answers
1) An ionic bond is best described as A) the sharing of electrons. B) the transfer of electrons from one atom to another. C) the attraction that holds the atoms together in a polyatomic ion. D) the attraction between two nonmetal atoms. E) the attraction between two metal atoms. 2) A covalent bond is best described as A) the sharing of electrons between atoms. B) the transfer of electrons. C) a bond...
PRE-LAB ASSIGNMENT 1) Write the balanced net ionic equation for the reaction between MnO4-ion and Feation...
PRE-LAB ASSIGNMENT 1) Write the balanced net ionic equation for the reaction between MnO4-ion and Feation in acid solution. 2) How many moles of Fe²+ ion can be oxidized by 1.2 X 10-2 moles of MnO4 in the above reaction? moles 3) A solid sample containing some Fetion weighs 1.750 g. It requires 36.44 ml of 0.0244 M KMnO4 to titrate the Fe in the dissolve sample to pink end point. a. How many moles of MnO4- are required? moles...
1) A student performs an experiment to determine the density of a sugar solution. She obtains...
1) A student performs an experiment to determine the density of a sugar solution. She obtains the following results 136 g ml, 1.81 gmL 1.80 g/mL, 1.81 g/mL. If the actual value for the density of the sugar solution is 1.80 g/ml, which statement below best describes her results? A) Her results are precise, but not accurate. C) Her results are both precise and accurate B) Her results are neither precise nor accurate. D) Her results are accurate, but not...
1) Predict the charge that a magnesium (Mg) ion would have A) 5- B) 1+ C)...
1) Predict the charge that a magnesium (Mg) ion would have A) 5- B) 1+ C) 1- D) 2+ 2) Predict the charge that an ion formed from sulfur would have. A) 1- B) 6+ C) 3- D) 4+ E) 2- 3) Which of the following does NOT describe a metal? A) good conductor of heat B) good conductor of electricity C) tends to gain electrons D) forms ionic compounds with nonmetals E) found on the left side of the...
6. The most common ion of bromine has a charge of A. +2 В. +1 C....
6. The most common ion of bromine has a charge of A. +2 В. +1 C. -1 D. -2 E. bromine only forms covalent compounds. Which atom in Period 5 of the periodic table has the largest radius? 7. A. Xenon B. Cadmium C. Strontium D. Yttrium E. Rubidium 8. Which of the following covalent bonds is most polar? A. O-F В. Н-F C. C-F D. Cl-F None of these bonds is polar. E. 9. How many electrons are on...
25. FeO, (molar mass = 159.7 g/mol) reacts with CO (molar maw28.0 /mol) according to the...
25. FeO, (molar mass = 159.7 g/mol) reacts with CO (molar maw28.0 /mol) according to the equation below. Calculate the number of moles of iron produced when 185,5 g CO reacts with excess F,O Fe(s) + 3 CO(g) - 300,() +2 Fe(s) A. 2.208 mol B. 13.25 mol C. 4.415 mol D. 9.93 mol E 3.311 mol 26. Tin(II) fluoride is added to some dental prod- ucts to prevent cavities. How many grams of tin(II) fluoride can be made from...
Write the complete electronic configurations for the neutral manganese atom, Mn ion and the manganese ion...
Write the complete electronic configurations for the neutral manganese atom, Mn ion and the manganese ion in MnO. Comment on the relationship between the colors of the MnO. and Mn2 and the electronic configurations. 4. The following reaction was performed for the determination of oxalate in the green salt: 5. 5 CO (aq)+ 2 MnO (ag) + 16 H"(ag)-10 CO:) + 2 Mn (ag) + 8 H:O Determine the oxidation states of all atoms. a. b. Identify the oxidizing and...
Chem 101 Sec 14 Summer 2019 10. What coefficient is placed in front of O, to...
Chem 101 Sec 14 Summer 2019 10. What coefficient is placed in front of O, to balance the following equation for the combustion of propane? 6CO, + 8H:O O 2C3Hg + a. 6 b. 8 c. 10 d. 20 True or False? Any molecule with polar bonds will be a polar molecule... 11. 12. When writing the Lewis Dot structure for O2 (oxygen gas), how many valence electrons should you start with? a. 2 b. 6 c. 8 d. 12...
all 6. Which combination of atoms is most likely to form an ionic compound if they...
all
6. Which combination of atoms is most likely to form an ionic compound if they are allowed to react with each other? A) metal and metal B) metal and nonmetal C) nonmetal and nonmetal D) metalloid and metalloid E) All combinations are likely to form an ionic compound. 7. A covalent bond involves which of the following? A) sharing of electrons between two atoms B) transfer of electrons between two atoms C) donation of protons from one atom to...
Make sure Do all.. I want all answers
1) An ionic bond is best described as A) the sharing of electrons. B) the transfer of electrons from one atom to another. C) the attraction that holds the atoms together in a polyatomic ion. D) the attraction between two nonmetal atoms. E) the attraction between two metal atoms. 2) A covalent bond is best described as A) the sharing of electrons between atoms. B) the transfer of electrons. C) a bond...
PRE-LAB ASSIGNMENT 1) Write the balanced net ionic equation for the reaction between MnO4-ion and Feation in acid solution. 2) How many moles of Fe²+ ion can be oxidized by 1.2 X 10-2 moles of MnO4 in the above reaction? moles 3) A solid sample containing some Fetion weighs 1.750 g. It requires 36.44 ml of 0.0244 M KMnO4 to titrate the Fe in the dissolve sample to pink end point. a. How many moles of MnO4- are required? moles...
1) A student performs an experiment to determine the density of a sugar solution. She obtains the following results 136 g ml, 1.81 gmL 1.80 g/mL, 1.81 g/mL. If the actual value for the density of the sugar solution is 1.80 g/ml, which statement below best describes her results? A) Her results are precise, but not accurate. C) Her results are both precise and accurate B) Her results are neither precise nor accurate. D) Her results are accurate, but not...
1) Predict the charge that a magnesium (Mg) ion would have A) 5- B) 1+ C) 1- D) 2+ 2) Predict the charge that an ion formed from sulfur would have. A) 1- B) 6+ C) 3- D) 4+ E) 2- 3) Which of the following does NOT describe a metal? A) good conductor of heat B) good conductor of electricity C) tends to gain electrons D) forms ionic compounds with nonmetals E) found on the left side of the...
6. The most common ion of bromine has a charge of A. +2 В. +1 C. -1 D. -2 E. bromine only forms covalent compounds. Which atom in Period 5 of the periodic table has the largest radius? 7. A. Xenon B. Cadmium C. Strontium D. Yttrium E. Rubidium 8. Which of the following covalent bonds is most polar? A. O-F В. Н-F C. C-F D. Cl-F None of these bonds is polar. E. 9. How many electrons are on...
25. FeO, (molar mass = 159.7 g/mol) reacts with CO (molar maw28.0 /mol) according to the equation below. Calculate the number of moles of iron produced when 185,5 g CO reacts with excess F,O Fe(s) + 3 CO(g) - 300,() +2 Fe(s) A. 2.208 mol B. 13.25 mol C. 4.415 mol D. 9.93 mol E 3.311 mol 26. Tin(II) fluoride is added to some dental prod- ucts to prevent cavities. How many grams of tin(II) fluoride can be made from...
Write the complete electronic configurations for the neutral manganese atom, Mn ion and the manganese ion in MnO. Comment on the relationship between the colors of the MnO. and Mn2 and the electronic configurations. 4. The following reaction was performed for the determination of oxalate in the green salt: 5. 5 CO (aq)+ 2 MnO (ag) + 16 H"(ag)-10 CO:) + 2 Mn (ag) + 8 H:O Determine the oxidation states of all atoms. a. b. Identify the oxidizing and...
Chem 101 Sec 14 Summer 2019 10. What coefficient is placed in front of O, to balance the following equation for the combustion of propane? 6CO, + 8H:O O 2C3Hg + a. 6 b. 8 c. 10 d. 20 True or False? Any molecule with polar bonds will be a polar molecule... 11. 12. When writing the Lewis Dot structure for O2 (oxygen gas), how many valence electrons should you start with? a. 2 b. 6 c. 8 d. 12...
all
6. Which combination of atoms is most likely to form an ionic compound if they are allowed to react with each other? A) metal and metal B) metal and nonmetal C) nonmetal and nonmetal D) metalloid and metalloid E) All combinations are likely to form an ionic compound. 7. A covalent bond involves which of the following? A) sharing of electrons between two atoms B) transfer of electrons between two atoms C) donation of protons from one atom to...
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