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Ultimate Chemistry Study Guide - Questions & Answers
Chemistry
College
Question 6 (5 points)Label each situation as metals, nonmetals, or metalloids. Label each with numbers.Usually conducts electricity& heat wellat room temperature theseare gases or liquidsWill lose valance electronsto form compounds.can be used assemiconductorsWill gain valance electronsto form compounds.1. a metal2. a nonmetal3. a metalloid
Chemistry
College
What is the difference between practical work inside a laboratory and outside a laboratory
Chemistry
High School
Ideal Gas Law --PV=nRTStandard Conditions these are listed on the back of the periodic table slightly different-look nowPressure: 1 atm = 760 mmHg = 760 torr = 101.3 kPaTemperature : 273 K = 0CTo convert from C to K add 273 to the C temperatureTo convert back to C subtract 273 from the Kelvin temperature*Reminder: R = 0.0821 L atm/mol K so volume must be in liters, pressure must be in atm, amountmol K must be in moles NOT GRAMS, and temperature must be in kelvin1. How many moles of gas are contained in 890.0 mL at 21.0 C and 750.0 mm Hg pressure?2. 1.09 g of H, is contained in a 2.00 L container at 20.0 C. What is the pressure in this container?3. Calculate the volume 3.00 moles of a gas will occupy at 24.0 C and 762.4 mm Hg.4. What volume will 20.0 g of Argon occupy at STP?5. How many moles of gas would be present in a gas trapped within a 100.0 mL vessel at 25.0 Cat a pressure of 2.50 atmospheres?6. How many moles of a gas would be present in a gas trapped within a 37.0 liter vessel at 80.00C at a pressure of 2.50 atm?7. If the number of moles of a gas is doubled, at the same temperature and pressure, will the volume increase or decrease?8. What volume will 1.27 moles of helium gas occupy at STP?9. At what pressure would 0.150 mole of nitrogen gas at 23.0 C occupy 8.90 L?10. What volume would 32.0 g of NO, gas occupy at 3.12 atm and 18.0 C?
Chemistry
High School
How many liters of NO2 (at STP) can be produced with 25.0 g of Cu reacting with concentrated nitric acid?
Chemistry
College
Chemistry balance equationAt equilibrium, the value of K = 0.00659 for the reaction: N (g) + 3 H (g) 2 NH (g). Calculate [N] when [NH] = 0.000123 M and [H] = 0.0275 M
Chemistry
High School
The graph shows the distribution of energy in the particles of two gas samples at different temperatures, T1 and T2. A, B, and C represent individual particles. The graph shows the distribution of energy in the particles of two gas samples at different temperatures, T1 and T2. A, B, and C represent individual particles.
Chemistry
High School
The graph shows the distribution of energy in the particles of two gas samples at different temperatures, T1 and T2. A, B, and C represent individual particles. Based on the graph, which of the following statements is likely to be true?Group of answer choicesParticle A and C are more likely to participate in the reaction than particle B.Most of the particles of the two gases have very high speeds.A fewer number of particles of gas at T1 are likely to participate in the reaction than the gas at T2.The average speed of gas particles at T2 is lower than the average speed of gas particles at T1.
Chemistry
College
draw the lewis structure of ch3br
Chemistry
College
Chemistry balance QUESTIONreaction: ABC (g) B (g) + AC (g), find the value of K. At equilibrium, [ABC]=0.0168 M, [B]= 0.007 M, and [AC] = 0.0118 M
Chemistry
College
Chemistry Table balance A+BCTable 1 attached
Chemistry
College
CHEMISTRY chemistry Table balance A+BC Table2
Chemistry
College
Chemistry what is the reaction Rate TABLE
Chemistry
College
If 80 grams of KBr were dissolved in 100 grams of water at 35 degrees Celsius, which of these terms would best describe the solution
Chemistry
College
Chemistry Reaction Rate use the table to find reaction rate
Chemistry
High School
which nutrients are most responsible for eutrophication? a. carbon and oxygen b. carbon and phosphorus c. nitrogen and oxygen d. nitrogen and phosphorus
Chemistry
High School
3. Amari wants to set up a tent. He needs four 8 ft ropes. The package of ropes he bought from the store is 28 yards long. After setting up the tent, does Amari have any rope left over? If so, how much?
Chemistry
High School
11. The latent heat of fusion of water is 334 J/g. The latent heat ofvaporization of water is 2257 J/g. The specific heat capacity ofwater is 4.186 J/g C How much heat is needed to evaporate 500og of ice that starts at 0C ? Hint: Sum of AQS...Q1: Solid to Liquid;Q2 of Liquid water; Q3 Liquid to Gas
Chemistry
High School
which environmental problem would impact most minnesotans equally? a. toxicity of agriculture, pesticides.b. Disruption of wildlife from open pit mines. c. Water pollution from fracking.d. Climate change.
Chemistry
High School
Compare fires to explosions. What is one main difference between these two occurrences?
Chemistry
College
barium reacts with cobalt (iii) cyanide to produce
Chemistry
High School
Consider the chemical equation for the combustion of ammonia: 4NH3(g) + 7O2(g) 4NO2(g) + 6H2O(g) Which statement provides the correct and standard interpretation of the chemical equation in terms of the volume of gases at STP? A. 4 L of NH3(g) react with 7 L of O2(g) to produce 4 L of NO2(g) and 6 L of H2O(g). B. 12 L of NH3(g) react with 14 L of O2(g) to produce 8 L of NO2(g) and 6 L of H2O(g). C. 22.4 L of NH3(g) react with 22.4 L of O2(g) to produce 22.4 L of NO2(g) and 22.4 L of H2O(g). D. 89.6 L of NH3(g) react with 156.8 L of O2(g) to produce 89.6 L of NO2(g) and 134.4 L of H2O(g).
Chemistry
High School
2. If 13. 5 L of nitrogen gas reacts with 17. 8 L of hydrogen gas at SIP, according to the following reaction, what mass of ammonia would be produced?N2*3 H2 - 2 NH3
Chemistry
College
How does the presence of coal in Antarctica support Wegener's continental drift hypothesis?
Chemistry
High School
How many grams of iron are produced from 300. moles of carbon monoxide reacting with 15,000. grams of ferric oxide? 3CO + Fe2O3 2Fe + 3C02
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