Homework Answers
Group 1 >>>>answer
Group 1 elements are (Li,Na,K,Rb,Cs) react with halogens(F2,Cl2,Br2,I2) to form MX (UnH )
2Li(s) + F2 ---------> 2LiF(s)
2Na(s) + Cl2(s) ----------> 2NaCl(s)
2K(s) + Br2(l) ------------> 2KBr(s)
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In an experiment, various elements from the same family were reacted with the same element from...
Periodic Trends in Group II Objective In this experiment, the trend in one of the several...
Periodic Trends in Group
II
Objective
In this experiment, the trend in one of the several periodic
properties for group II of the Periodic Table will be
determined.
Introduction
Elements in the same group of the Periodic Table have similar
chemical and physical properties that gradually change as one goes
from one element in the group to the next. By observing the trends
in properties, the elements can be arranged in the order in which
they appear in the Periodic...
please help with these questions thank you ! In your experiment you were excpected to observe...
please help with these questions thank you !
In your experiment you were excpected to observe patterns of reactivity 1) The metal that reacted the most aggressively with water was (Ca, K, Na or Mg). Na The FORMULA for the gas produced when that metal reacted with water was The remaining solution was bsi (neutral, acidic, basic). 0.5 As stated in the lab manual, using your observations you could organize those four metals in order of reactivity. That order should...
Problem 1. Assume that Mars formed from chemical elements that were able to freeze out of...
Problem 1. Assume that Mars formed from chemical elements that were able to freeze out of the cloud of gas around the forming Sun, and that the relative abundances in this frozen-out material was the same as that of solar atmosphere (see belowTable) for Mg, Si, Fe, Na, Al, and Ca. Assume that all elements except perhaps Fe are fully oxidized when they freeze out (as MgO, SiO2, FeO, Na20, Al20s, and CaO). Calculate and tabulate the fractions of the...
2.1 MULTIPLE CHOICE 1) Which element has the chemical symbol, P? Al lead B) phosphorus platinum...
2.1 MULTIPLE CHOICE 1) Which element has the chemical symbol, P? Al lead B) phosphorus platinum D) potassium to water is formed if 3.2 of methane reacts with 12. Me react to form carbon code and water. What of open to produce 3.3 o carbon dioxide? A1724 14.88 DJ 160 3) Which of the following two whom we stopes? 2.2 OTHER QUESTIONS (Fill in the blank, TRUE or FALSE and calculations) On and Complete the sentences in questions and using...
A) As B) Sb C) P D)Bi E)N 10. In which of the series of elements...
A) As B) Sb C) P D)Bi E)N 10. In which of the series of elements listed below would the elements have most nearly the same atomic radius? A) Na, K. Rb, Cs B)F, CI, Br.I C) Na, Mg. Al, Si D) Sc, Ti, V, Cr E)B, Si, As, Te Which of the following properties, in general, increases from left to right across a period in the periodic table? A) ionic charge 11、 B) atomic radius C) density D) ionization...
2. For the reactions that were to be completed in Part A of the experiment, prepare a table with ...
Part A:
Part B:
Need help ASAP!!
2. For the reactions that were to be completed in Part A of the experiment, prepare a table with the formulas from Group A as headings of the columns and the formulas of Group B as headings of the ows. Within the table, fill in the formula and systematic name of the predicted precipitates that will form. If no precipitate is expected from the reaction, write 'No Reaction'. For each predicted precipitate, look...
3.2 Periodic trends 1. (0620-5 2012-Paper 1/2-Q21) Which properties of the element titanium, Ti, can be...
3.2 Periodic trends 1. (0620-5 2012-Paper 1/2-Q21) Which properties of the element titanium, Ti, can be predicted from its position in the Periodic Table? forms coloured compounds conducts electricity when solid can be used has low density as a catalyst X A X X Xx 2. (0620-W 2012-Paper 1/1-Q20) The diagram shows an outline of the Periodic Table. U V W X Y Which of the elements U, V, W, X and Y would react together in the ratio of...
please show the work Prelab for Experiment 5 - Conductivity and Chemical Reactions 2.34E-4. The 'E' must be capitalized." Scientific notation format The prelab questions mirror tho...
please show the work
Prelab for Experiment 5 - Conductivity and Chemical Reactions 2.34E-4. The 'E' must be capitalized." Scientific notation format The prelab questions mirror those that you will be doing at the end of the experiment. Bring your work for this prelab assignment to lab and you will have a much easier time completing the Data Analysis Sheet at the end of the experiment. Student information Enter your name (first and last) and the last 4 digits of...
18) From the following elements, one is not naturally diatomic molecule b- Nitrogen a-Oxygen d- Copper c- lodine 19...
18) From the following elements, one is not naturally diatomic molecule b- Nitrogen a-Oxygen d- Copper c- lodine 19) In the element Radium Ra, the number of protons, neutrons and electrons are respectively b-88, 88, 226 a- 88, 138, 88 d- 138, 88, 88 c-88, 226, 88 20) The empirical formulas of glucose CaHi:O, is b- CHO a- CiaHaO12 d-CH O c-CH:0 21) The compound NHa is a: b-A polyatomic cation a- A monoatomic cation d-A polyatomic anion c- A...
Experiment 7 Preparation of Alum PURPOSE oF EXPERIMENT: Prepare KAI(So,)2 12H20, an aluminum alum...
CHEM 101 LAB 7 PRELAB QUESTIONS B C AND D
Experiment 7 Preparation of Alum PURPOSE oF EXPERIMENT: Prepare KAI(So,)2 12H20, an aluminum alum, from aluminum metal. (Note: ExPERIMENT 8 describes the gravimetric analysis of the sulfate content in alum.) Alums have the general formula MM(So) 12HO, where M* is commonly Na". K', Tl., NH,., or Ag, and Mt''is A广, Fe". Cr". Ti". or Co. . Samples of these compounds have a variety of uses in our everyday lives. Sodium...
Periodic Trends in Group
II
Objective
In this experiment, the trend in one of the several periodic
properties for group II of the Periodic Table will be
determined.
Introduction
Elements in the same group of the Periodic Table have similar
chemical and physical properties that gradually change as one goes
from one element in the group to the next. By observing the trends
in properties, the elements can be arranged in the order in which
they appear in the Periodic...
please help with these questions thank you !
In your experiment you were excpected to observe patterns of reactivity 1) The metal that reacted the most aggressively with water was (Ca, K, Na or Mg). Na The FORMULA for the gas produced when that metal reacted with water was The remaining solution was bsi (neutral, acidic, basic). 0.5 As stated in the lab manual, using your observations you could organize those four metals in order of reactivity. That order should...
Problem 1. Assume that Mars formed from chemical elements that were able to freeze out of the cloud of gas around the forming Sun, and that the relative abundances in this frozen-out material was the same as that of solar atmosphere (see belowTable) for Mg, Si, Fe, Na, Al, and Ca. Assume that all elements except perhaps Fe are fully oxidized when they freeze out (as MgO, SiO2, FeO, Na20, Al20s, and CaO). Calculate and tabulate the fractions of the...
2.1 MULTIPLE CHOICE 1) Which element has the chemical symbol, P? Al lead B) phosphorus platinum D) potassium to water is formed if 3.2 of methane reacts with 12. Me react to form carbon code and water. What of open to produce 3.3 o carbon dioxide? A1724 14.88 DJ 160 3) Which of the following two whom we stopes? 2.2 OTHER QUESTIONS (Fill in the blank, TRUE or FALSE and calculations) On and Complete the sentences in questions and using...
A) As B) Sb C) P D)Bi E)N 10. In which of the series of elements listed below would the elements have most nearly the same atomic radius? A) Na, K. Rb, Cs B)F, CI, Br.I C) Na, Mg. Al, Si D) Sc, Ti, V, Cr E)B, Si, As, Te Which of the following properties, in general, increases from left to right across a period in the periodic table? A) ionic charge 11、 B) atomic radius C) density D) ionization...
Part A:
Part B:
Need help ASAP!!
2. For the reactions that were to be completed in Part A of the experiment, prepare a table with the formulas from Group A as headings of the columns and the formulas of Group B as headings of the ows. Within the table, fill in the formula and systematic name of the predicted precipitates that will form. If no precipitate is expected from the reaction, write 'No Reaction'. For each predicted precipitate, look...
3.2 Periodic trends 1. (0620-5 2012-Paper 1/2-Q21) Which properties of the element titanium, Ti, can be predicted from its position in the Periodic Table? forms coloured compounds conducts electricity when solid can be used has low density as a catalyst X A X X Xx 2. (0620-W 2012-Paper 1/1-Q20) The diagram shows an outline of the Periodic Table. U V W X Y Which of the elements U, V, W, X and Y would react together in the ratio of...
please show the work
Prelab for Experiment 5 - Conductivity and Chemical Reactions 2.34E-4. The 'E' must be capitalized." Scientific notation format The prelab questions mirror those that you will be doing at the end of the experiment. Bring your work for this prelab assignment to lab and you will have a much easier time completing the Data Analysis Sheet at the end of the experiment. Student information Enter your name (first and last) and the last 4 digits of...
18) From the following elements, one is not naturally diatomic molecule b- Nitrogen a-Oxygen d- Copper c- lodine 19) In the element Radium Ra, the number of protons, neutrons and electrons are respectively b-88, 88, 226 a- 88, 138, 88 d- 138, 88, 88 c-88, 226, 88 20) The empirical formulas of glucose CaHi:O, is b- CHO a- CiaHaO12 d-CH O c-CH:0 21) The compound NHa is a: b-A polyatomic cation a- A monoatomic cation d-A polyatomic anion c- A...
CHEM 101 LAB 7 PRELAB QUESTIONS B C AND D
Experiment 7 Preparation of Alum PURPOSE oF EXPERIMENT: Prepare KAI(So,)2 12H20, an aluminum alum, from aluminum metal. (Note: ExPERIMENT 8 describes the gravimetric analysis of the sulfate content in alum.) Alums have the general formula MM(So) 12HO, where M* is commonly Na". K', Tl., NH,., or Ag, and Mt''is A广, Fe". Cr". Ti". or Co. . Samples of these compounds have a variety of uses in our everyday lives. Sodium...
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