1. The propellent used to help launch the space shuttle in the solid-fuel boosters attached to...
1.
The propellent used to help launch the space shuttle in the
solid-fuel boosters attached to the vehicle is 1.1 million pounds
of ammonium perchlorate and powdered aluminum. The reaction
generating the energy to blast the orbitor into space is:
3 NH4ClO4(s) + 3 Al(s)
---> Al2O3(s) +
AlCl3(s) + 3 NO(g) + 6
H2O(g)
The energy generated results from oxidation-reduction
chemistry.
Write the symbol for the metallic element that is oxidized in the
reaction.
Write the symbol for the element that is reduced in the
reaction.
What is the name of the first aluminum containing compound listed
as a product of the reaction?
What is the name of the other aluminum containing compound listed
as a product of the reaction?
2.
The chemical substances in the first column of the table are
either already shown as cations (because they are either polyatomic
ions or variably valent elements), or they are known to form
cations during the making of an ionic compound. The chemical
substances in the first row of the table are either already shown
as anions (because they are polyatomic ions), or they are known to
form anions during the making of an ionic compound. When no charge
is shown, you'll have to figure out what charge an atom of the
element is expected to carry as an ion. Complete the table by
writing the chemical formula of the compound resulting from
combining the ions at the intersecting rows and columns. Remember
chemical formulas of ionic compounds do not show charges!!!
| HSO3- | P | |
| Mn3+ | ||
| Ca | ||
| Mn2+ |
Homework Answers
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1.
The propellent used to help launch the space shuttle in the
solid-fuel boosters attached to...
8 In the thermite reaction: 2 Al(s) + Fe2O3(s) ---> 2 Fe(s) + Al2O3(s) So much...
8 In the thermite reaction: 2 Al(s) + Fe2O3(s) ---> 2 Fe(s) + Al2O3(s) So much heat is generated that the iron initially formed is a molten liquid. Which of the following statements is consistant with the reaction? the reaction is endothermic; aluminum is oxidized and iron is reduced.the reaction is not an oxidation reduction reaction. the reaction is exothermic; aluminum is oxidized and iron is reduced.the reaction is endothermic; aluminum is reduced and iron is oxidized.the reaction is exothermic; aluminum...
Ammonium perchlorate NH4ClO4 is a powerful solid rocket fuel, used in the Space Shuttle boosters. It...
Ammonium perchlorate NH4ClO4 is a powerful solid rocket fuel, used in the Space Shuttle boosters. It decomposes into nitrogen N2 gas, chlorine Cl2 gas, oxygen O2 gas and water vapor, releasing a great deal of energy. Calculate the moles of chlorine produced by the reaction of 0.10mol of ammonium perchlorate. Be sure your answer has a unit symbol, if necessary, and round it to the correct number of significant digits.
2. The launch of the Space Shuttle was assisted by solid propellant rockets containing aluminum as...
2. The launch of the Space Shuttle was assisted by solid propellant rockets containing aluminum as the fuel and ammonium perchlorate, NH4CIO4, as the oxidizer; the two powders were bound together by a rubbery polybutadiene binder. Neglecting the binder (which is also a fuel) a balanced reaction equation is shown below. Use the listed values of the formation enthalpies to calculate Δ,H° for this reaction. 2A1(s) + 2 NH4Clo,(s) Al2O3(s) + N2(g) + → 3H2O(g) + 2HCl(g) +O2(g) -295.3 -1675.7...
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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...
Completing and Balancing Neutralization Reactions 10 of 18 For example, if you have a cation with...
Completing and Balancing Neutralization Reactions 10 of 18 For example, if you have a cation with a 1+ charge and an anion with a 2-charge, you will need two cations to balance the charge: I(1+ charge on cation)(2)]+[(2-charge on anion)(1)) = (+2) + (-2) = 0 Complete the following statements regarding the number of cations and anions present in the various ionic compounds. Match the numbers to the appropriate blanks in the sentences below. Make certain each sentence is complete...
6 Repeat step 5 for the remaining compounds in Data Table 3. 7 Record the chemical...
6 Repeat step 5 for the remaining compounds in Data Table 3. 7 Record the chemical formula for the first compound in Data Table 4. a Record the chemical symbol of the first metal ion or hydrogen (if any). Include the correct number of atoms based on the prefix (if any) given in the name. Include the physical state to distinguish binary acids from simple molecular compounds. b For cations, include the correct number of atoms to record the formula...
an introduction to chemistry lab Pre-Lab Study Questions 1. How can the presence of an ion...
an introduction to chemistry lab
Pre-Lab Study Questions 1. How can the presence of an ion in a solution be detected? ไป dedeed by a lame the ions undec gp color changes By com paring knoum olion o a unKnown vo Can co ure he color ehanges in he lame If a reaction produces an insoluble salt, what will you notice happening in the test tube? 2. So,It wany saヅdissolved and tt a, precipitate oat, solut kan bep eadind on...
2. The launch of the Space Shuttle was assisted by solid propellant rockets containing aluminum as the fuel and ammonium perchlorate, NH4CIO4, as the oxidizer; the two powders were bound together by a rubbery polybutadiene binder. Neglecting the binder (which is also a fuel) a balanced reaction equation is shown below. Use the listed values of the formation enthalpies to calculate Δ,H° for this reaction. 2A1(s) + 2 NH4Clo,(s) Al2O3(s) + N2(g) + → 3H2O(g) + 2HCl(g) +O2(g) -295.3 -1675.7...
Report Sheet Questions and Problems 0.1 How do the tests on known solutions containing cations and anions man to identify the cations or anions in an unknown substance hown solutions containing cations and anions make it possible for you on Mat is composed of either NaCl or CaCl. What tests would you run to identify the compound? Q.3 If tap water turns a deep red color with a few drops of KSCN, what cation is present? 0.4 A plant food...
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...
Completing and Balancing Neutralization Reactions 10 of 18 For example, if you have a cation with a 1+ charge and an anion with a 2-charge, you will need two cations to balance the charge: I(1+ charge on cation)(2)]+[(2-charge on anion)(1)) = (+2) + (-2) = 0 Complete the following statements regarding the number of cations and anions present in the various ionic compounds. Match the numbers to the appropriate blanks in the sentences below. Make certain each sentence is complete...
6 Repeat step 5 for the remaining compounds in Data Table 3. 7 Record the chemical formula for the first compound in Data Table 4. a Record the chemical symbol of the first metal ion or hydrogen (if any). Include the correct number of atoms based on the prefix (if any) given in the name. Include the physical state to distinguish binary acids from simple molecular compounds. b For cations, include the correct number of atoms to record the formula...
an introduction to chemistry lab
Pre-Lab Study Questions 1. How can the presence of an ion in a solution be detected? ไป dedeed by a lame the ions undec gp color changes By com paring knoum olion o a unKnown vo Can co ure he color ehanges in he lame If a reaction produces an insoluble salt, what will you notice happening in the test tube? 2. So,It wany saヅdissolved and tt a, precipitate oat, solut kan bep eadind on...
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