Metallurgy Questions and Answers
Inorganic Chemistry
MetallurgyIn two or more complete sentences, describe how one of the occupations that you studied would use descriptive statistics when performing their job. Justify your answers in two or more complete sentences.
Inorganic Chemistry
MetallurgyA metallurgist has one alloy containing 44 % aluminum and another containing 70 % aluminum. How many pounds of each alloy must he use to make 48 pounds of a third alloy containing 64 % aluminum? (Round to two decimal places if necessary.)
Inorganic Chemistry
MetallurgyPercival Pott
None of these responses is correct.
was the first to design a randomized double-blind trial for carcinogens in food.
showed that meat cooked at a high temperature was carcinogenic.
described the possibility of cancer being linked to an occupation.
carried out the first cohort study on cancer.
linked smoking to lung cancer.
Inorganic Chemistry
MetallurgyWhat is the GHS classification of the substance or mixture for aluminum? Select all that apply.
Flammable solids
Aquatic toxicity or aquatic toxicity
Specific target organ toxicity - repeated exposure
Respiratory sensitisation
Eye irritation
Not a hazardous substance or mixture
Reproductive toxicity
Skin sensitisation
Oral toxicity
Carcinogenicity
Inorganic Chemistry
MetallurgyA sample of copper absorbs 43.6 kJ of heat, resulting in a temperature rise of 75.0°C, determine the mass (in kg) of the copper sample if the specific heat capacity of copper is 0.385 J/g°C.
7.94 kg
1.26 kg
1.51 kg
3.64 kg
6.62 kg
Inorganic Chemistry
MetallurgyA stock solution of HNO3 is prepared and found to contain 13.5 M of HNO3. If 25.0 mL of the stock solution is diluted to a final volume of 0.500 L, the concentration of the diluted solution is ---M.
1.48
6.75
2.70
0.270
0.675
Inorganic Chemistry
MetallurgyWhat will be the molecular geometry of an open-chain noncyclical hydrocarbon with the generic molecular formula CnH2n-2?
Tetrahedral
Linear
Trigonal planar
Octahedral
trigonal pyramidal
Inorganic Chemistry
MetallurgyWhich of the compounds of H₂C2O4, Ca(OH)2, KOH, and HI, behave as acids when they are dissolved in water?
only HI
H₂C2O4 and HI
Ca(OH)2 and KOH
only H₂C2O4
only KOH
Inorganic Chemistry
MetallurgyTwo compounds are considered as isomers if they have the:
different molecular formula AND same structure.
same molecular formula AND different structure.
different molecular formula AND different structure.
same molecular formula AND same structure.
same molecular formula OR same structure.
Inorganic Chemistry
MetallurgyHow much energy is evolved during the reaction of 51.2 g of Al, according to the reaction below? Assume that there is excess Fe₂O3.
Fe2O3(s) + 2 Al(s) → Al2O3(s) + 2 Fe(s) ΔH°rxn= -852 kJ
51.2 kJ
448 kJ
1617 kJ
808 kJ
224 kJ
Inorganic Chemistry
MetallurgyThree identical flasks contain three different gases at standard temperature and pressure. Flask A contains C₂H4, flask B contains O3, and flask C contains F2. Which flask contains the largest number of molecules?
flask B
flask A
flask C
All contain same number of molecules.
Inorganic Chemistry
MetallurgyChoose the statement below that is TRUE.
The term "weak electrolyte" means that the substance is inert.
A molecular compound that does not ionize in solution is considered a strong electrolyte.
A weak acid solution consists of mostly nonionized acid molecules.
A strong acid solution consists of only partially ionized acid molecules.
The term "strong electrolyte" means that the substance is extremely reactive.
Inorganic Chemistry
MetallurgyConsider the following reaction. How many moles of oxygen are required to produce 2.33 moles of water? Assume that there is excess C3H7SH present.
C3H7SH(l) + 6 O₂(g) → 3 CO2(g) + SO2(g) + 4H₂O(g)
4.14 moles
2.33 moles
1.55 moles
6.21 moles
3.50 moles
Inorganic Chemistry
MetallurgyWhat is the hydronium ion concentration of a 0.200 M acetic acid solution with Ka = 1.8 x 10-5? The equation for the dissociation of acetic acid is:
CH3CO2H(aq) + H₂O(I) =H3O+ (aq) + CH3CO2−(aq).
1.9 × 10-3 M
4.2 x 10-2 M
1.9 × 10-2 M
4.2 × 10-3 M
Inorganic Chemistry
MetallurgyThe solubility of Pb(NO3)2 is 55 grams per 100 g H₂O at 20°C. Which term would properly describe a solution where 44 grams of Pb(NO3)2 is added to 100 grams of water at this temperature?
unsaturated
supersaturated
insoluble
saturated
Inorganic Chemistry
MetallurgyWhich one of the following processes produces a decrease in the entropy of the
system?
melting solid aluminum into liquid aluminum
deposition of solid CO2 from gaseous CO2
dissolution of LiOH(s) in water
mixing of two gases into one container
evaporation of liquid hexane into gaseous hexane
Inorganic Chemistry
MetallurgyWhich statement about surface tension is FALSE?
Items with densities lower than water will sink due to surface tension.
Increased intermolecular forces increase surface tension.
Liquids tend to minimize their surface area.
Molecules on the surface of the liquid have fewer molecules to interact wit
Inorganic Chemistry
MetallurgyIn the coal-gasification process, carbon monoxide is converted to carbon dioxide via
the following reaction:
CO (g) + H2O (g) → CO2 (g) + H2 (g)
In an experiment, 0.35 mol of CO and 0.40 mol of H₂O were placed in a 1.00-L
reaction vessel. At equilibrium, there were 0.17 mol of CO remaining. Keq at the
temperature of the experiment is_____________.
5.5
1.2
1.0
0.75
0.87
Inorganic Chemistry
MetallurgyLattice energy is _____
the sum of ionization energies of the components in an ionic solid
the sum of electron affinities of the components in an ionic solid
the energy given off when gaseous ions combine to form one mole of an ionic solid
the energy required to convert a mole of ionic solid into its constituent ions in the gas phase
the energy required to produce one mole of an ionic compound from its constituent elements in their standard states
Inorganic Chemistry
MetallurgyWhat is the wavelength (angstroms) of a photon that has an energy of 4.38 x 10^-18 J?
454 angstroms
1.31 x 10^9 angstroms
6.89 x 10^15 angstroms
1.45 x 10^-16 angstroms
2.30 x 10^7 angstroms
Inorganic Chemistry
MetallurgyThe greater the lattice energy, the greater the charges on the participatory ions and the smaller their radii.
True
False
Inorganic Chemistry
MetallurgyOf the following transitions in the Bohr hydrogen atom, the
n=7→n=3
n=4 →n=2
n=4 → n = 7
n=3→n=2
All transitions absorb plotons of equivalent energy.
Inorganic Chemistry
MetallurgyAn FM radio station broadcasts electromagnetic radiation at a frequency of 90.2 MHz. The wavelength of this radiation is
2.71 x 10^10
0.301
3.33
2.71 x 10^16
3.33 x 10^6
Inorganic Chemistry
MetallurgyElectromagnetic radiation with a wavelength of 665 nm appears as orange light to the human eye. The frequency of this light is
4.51 x 10^5
2.22 x 10^-15
4.51 x 10^14
2.00 x 10^11
2.00 × 10²
Inorganic Chemistry
MetallurgyFor this question, Kryptonite (Kp) is a fictional transition metal with all possible
charges from +1 to +6. Name the following compound:
KpP2
For this question, Vibranium (Vb) is a fictional metal in group 2 of the Periodic table.
Write the formula for Vibranium Nitride
Inorganic Chemistry
MetallurgyIf you prepare a solution by adding sufficient amount of solute so that after heating and cooling the solution there is a visible amount of solid solute left in the bottom of the beaker, the solution would be considered _______
supersaturated
unsaturated
thermally saturated
saturated
Inorganic Chemistry
MetallurgyFor this question, Adamantium (A) is a fictional transition metal with multiple possible charges.
Write the formula for: Adamantium (II) Hyponitrite
Inorganic Chemistry
MetallurgyRelate how intensity is different than texture
Intensity is how Intense a plece of music Is and the texture is how hard or soft it sounds.
Intensity is how dynamics, articulation and other factors that a composer may include in music affects the listener while texture is the amount of voices and how they work in cooperation with each other in a
piece of music.
Intensity is how hard or soft a piece of music sounds and texture is how intense it is.
Intensity is how dynamics, articulation and other factors that a composer may include in music affects the musicians playing it while texture is the amount of instr and how they work in cooperation with each other in a plece of music.
Inorganic Chemistry
MetallurgyWhich of the following pairs represent the planning-to-operation time for Vogtle 3 and 4 reactors in
Georgia?
16 years and 17 years
15 years and 16 years
16 years and 15 years
17 years and 16 years
Inorganic Chemistry
MetallurgyWhich of the following frequencies corresponds to light with the longest wavelength?
3.00 × 10^13 s^-1
8.50 x 10^20 s^-1
3.20 × 10^9 s^-1
9.12 x 10^12 s^-1
4.12 × 10^5 s^-1
Inorganic Chemistry
Metallurgy1) What is the complete ground state electron configuration for the beryllium atom?
(2) What is the complete ground state electron configuration for the titanium atom?
Inorganic Chemistry
MetallurgyGive the name and formula of each of the binary compounds formed from the following
elements.
a. Li and P
Name =
Formula =
b. Na and I
Name =
Formula =
c. K and S
Name: =
Formula =
Inorganic Chemistry
Metallurgy(1) The element with a valence electron configuration of 4s²4p² is in group ____ and period ____
(2) The element with a valence electron configuration of 2s²2p5 is in group ____ and period ____
Inorganic Chemistry
MetallurgyCalculate the energy for the transition of an electron from the n=4 level to the n = 3 level of a hydrogen atom.
ΔE=
This is an _________ process.
Inorganic Chemistry
MetallurgyA coffee cup calorimeter is filled with 200.0 mL of water at 22.1°C. A piece of metal
at 48.6° C with a mass of 5.1 g is added. The final temperature of the water in the
calorimeter is 26.8°C. The density of liquid water is 1.00 g/mL, and its specific heat
capacity is 4.18 J/(g°C). Determine the specific heat capacity of the metal. Place
your final answer in blank #1.
Inorganic Chemistry
MetallurgyA 12.69 gram sample of iron is heated in the presence of excess chlorine. A metal chloride is formed with a mass of 36.85 g. Determine the empirical formula of the metal chloride.
Inorganic Chemistry
MetallurgyWhen aqueous solutions of chromium(III) sulfate and sodium phosphate are combined, solid chromium(III) phosphate and a solution of sodium sulfate are formed. The net ionic equation for this reaction is:
Inorganic Chemistry
MetallurgyA sample of neon gas occupies a volume of 7.86 L at 59.0°C and 0.900 atm. If it is desired to increase the volume of the gas sample to 9.04 L, while increasing its pressure to 1.08 atm, the temperature of the gas sample at the new volume and pressure must be ___
Inorganic Chemistry
MetallurgyCompute the root-mean-square speed of He molecules in a sample of helium gas at a temperature of 183°C.
Inorganic Chemistry
MetallurgyWhen elemental copper is strongly heated with sulfur, a mixture of
CuS and Cu₂S is produced, with CuS predominating.
Cu(s) + S(s) → CuS(s)
2Cu(s) + S(s) → Cu₂S(s)
What is the theoretical yield of CuS when 33.70 g of Cu(s) is heated with 45.80 g of S? (Assume only
CuS is produced in the reaction.)
Theoretical yield =
What is the percent yield of CuS if only 36.2 g of CuS can be isolated from the mixture?
Percent yield =
Inorganic Chemistry
MetallurgyFor each of the following problems, show your calculation setup. In both your setup and answer, show units and follow the rules of significant figures.
1. Convert 78°F to degrees Celsius
Inorganic Chemistry
MetallurgyWrite the formula and calculate the molar mass for each of the following compounds.
a. iron(II) chloride
Formula:
Molar mass=
b. calcium sulfate
Formula:
Molar mass=
c. copper(II) chloride
Formula:
Molar mass=
Inorganic Chemistry
MetallurgyA sample of an unknown gas is found to have a density of 1.99 g/L at a pressure of 0.732 atm and a temperature of 43 °C. The molar mass of the unknown gas is ___ g/mol.
Inorganic Chemistry
MetallurgyAqueous solutions of potassium sulfate and ammonium nitrate are mixed together. Which statement is correct?
No reaction will occur.
NH₂SO4 will precipitate from solution.
Both KNO3 and NH4SO4 precipitate from solution.
A gas is released.
KNO3 will precipitate from solution.
Inorganic Chemistry
MetallurgyThe name of an aqueous solution of HF is
The formula of hydrochloric acid is
Inorganic Chemistry
MetallurgyWhat is the name of the compound with the formula KOH ?
What is the name of the compound with the formula NaHCO3 ?
What is the name of the compound with the formula AI(CN)3 ?
Inorganic Chemistry
MetallurgyBalance each of the chemical reactions.
1) CuSO4 (27) + Zn (3) → ZnSO4 (aq) + Cu (s)
2) NaOH(aq) + HC1 (ag) → NaCl (ag) + H₂O (l)
3) Mg (s) + O2 (g) → MgO (s)
4) Co(NO3)2 (aq) + Na₂HPO4 (aq) → NaNO3 (qq) + CoHPO4 (s)
5) NaHCO3 (s) + HC₂H³O2 (aq) → NaC₂H³O2 (aq) + H₂O (1) + CO₂ (g)
Inorganic Chemistry
MetallurgyWhich of the following is incorrectly named?
PO43, phosphate ion
NO³-, nitrite ion
Mg(OH)2, magnesium hydroxide
Pb(NO3)2, lead(II) nitrate
NH4CIO4, ammonium perchlorate
Inorganic Chemistry
MetallurgyWhat is the name of the compound with the formula NaCIO2 ?
What is the formula of calcium hypochlorite ?
Inorganic Chemistry
MetallurgyCategorize the following statement as observation, law, or theory:
The mass of a gas that will dissolve in a liquid is directly proportional to the pressure of the gas.
observation
law
theory