(BASIC QUESTIONS) Choose or tick the phase of matter that is being described CHOICES: GAS LIQUID EITHER NEITHER Highest kinetic energy among its molecules Has a definite mass
Q: A. Identify whether the following example is a physical change or a chemical change. 9. The tie-dye…
A: To determine whether the given examples are a physical change or a chemical change. The tie-dye…
Q: Expressing amounts of energy in different energy units is necessary to solve many chemistry…
A: Calorie and Joule are the units of energy
Q: Choose the state of water in which the water molecules are farthest apart on average. Group of…
A: The various forms in which matter can exist are usually known as states of matter. The main states…
Q: 4. What is the definition of thermal chemistry? The study of change that involves temperature The…
A: Thermal chemistry is associated with quantity of heat involve in a chemical reaction.
Q: The attraction that binds positive and negative charges together in an atom is known as the a.…
A: Correct option is b, coulomb force. It is also known as electrostatic force of attraction which acts…
Q: Match the following terms with its correct definition The heat content of the sample of matter. It…
A: Answer: All these questions are based on the understanding of the definitions of some very important…
Q: Select the correct definition for each of the following terms: (i) thermal energy energy that…
A: All of these are different types of energies. They are defined in the following step.
Q: Show how Lavoisier's conservation of matter can be explained on the basis of the assumptions of the…
A: A question based on atomic structure that is to be accomplished.
Q: 22. What is an exothermic reaction? Which has greater energy in an exothermic reaction, the…
A: In thermodynamics we learn about the energy, heat, energy transformation, absorption of energy and…
Q: Nitrogen gas mixes with hydrogen gas to produce ammonia gas (NH3). How much energy is required or…
A: Energy produced by this reaction is equal to -91.8 KJ/mol N2 + 3H2 -------> 2NH3 DEL Ho=…
Q: In the illustration, O is color-coded as red. What kind of change is represented by this…
A: In the given question, molecular arrangements are shown by the red dots. Here O is color-coded as…
Q: Of the five elements Sn, Si, Sb, O, Te, which has the most endothermic reaction? (E represents an…
A: When the atoms absorb energy during the reaction, the reaction is endothermic. The absorbed energy…
Q: For each of the environments below: (a) identify your system and surroundings and (b) predict…
A:
Q: Match the following vocabulary to its definition Kinetic Energy The energy of motion [ Choose ]…
A: 1) Kinetic energy is defined as the energy of motion. Kinetic energy is the property of a moving…
Q: Of the five elements Al, Cl, I, Na, Rb, which has the most exothermic reaction? (E represents an…
A: The reactions which accompany with release of energy,are known as exothermic reactions. As energy is…
Q: 1. Describe the interconversions of forms of energy occurring in these processes: (a) You throw a…
A: Since you have posted multiple questions, we'll answer the first one. If you want any other…
Q: If the height or mass of an object is increased, its ____ energy will increase.
A: On increasing the height of the mass ,it's potential energy will increase
Q: 7. Compare the kinetic energy of water molecules at 20°C and 60°C O The molecules at 20°C will have…
A: Kinetic energy (K.E.) = (1/2) mv2 m is the velocity of particle m is the mass of particle
Q: Nitrogen reacts with hydrogen to produce ammonia according to the following equation: [ 2NH3(g)…
A: Given, Chemical reaction, 2NH3(g) ------> N2(g) + 2H2(g) + 92 kJ
Q: 3. A neutral piece of Styrofoam is rubbed briskly with a neutral piece of wool. Afterward, it is…
A: Styrofoam and wool are attracted to each other due to lose and gain of electrons between them.
Q: Which of the following elements is tetratomic in its standard state? O sulfur selenium carbon O…
A: The elements given are sulfur i.e. S, selenium i.e. Se, carbon i.e. C and phosphorus i.e. P.
Q: Sodium chloride is readily soluble in water. When it dissolves, water molecules hydrate individual…
A: Water is polar solvent and it can dissolve ionic solids. Ionic solids are formed form cations and…
Q: Consider the following statements relating to ΔHsolution is correct? A) Breaking bonds always…
A: In the form of a solution, solute makes bonds with solvent.
Q: Enthalpy means ______ to promote combination of elements to form new substances or compounds: a.…
A: Enthalpy can not be related with the energy related with disorder or the randomness. The energy…
Q: L. Using Table 1, calculate AH for each of the following reactions. Tell if each is exothermic or…
A:
Q: State whether the potential energy of the underlined object increases or decreases as a result of…
A: Potential energy is the energy stored in an object due to its position above the earth’s surface, is…
Q: Which of the following statements describes the difference between endothermic and exothermic…
A: We know that, Endothermic means absorption of energy and exothermic means energy released.
Q: If atoms of helium, neon, argon and krypton gas are moving at the same speed, which atom would have…
A: The question is based on the concept of gaseous state. we have to determine the gas which will be…
Q: The study of energy changes that accompany chemical and physical changes is known as? Select one: a.…
A: Thermochemistry
Q: When 2 moles of HBr(g) react with Cl2(g) to form HCl(g) and Br2(g) according to the following…
A: The reaction taking place is given as, => 2 HBr (g) + Cl2 (g) → 2 HCl (g) + Br2 (g)
Q: 3. Determine whether each of the following processes are endothermic (absorbs energy) or exether-…
A: Chemical reactions can be classified into two categories based on the transfer of heat energy. When…
Q: 4HCN) + 50 2(9) 2H2O(g) + 4CO2(g) + 2N2 Calculate AS using the table provided. Compound S mre HCN…
A: Consider the given balanced equation is as follows; 4 HCN l + 5 O2 g → 2 H2O g + 4 CO2 g…
Q: 7.72 Classify each of the following as exothermic or endothermic: a. C3H3(g) + 50,(8) → 3CO,2(g) +…
A: If Energy term is (amount of energy) written in product side of chemical equation then reaction is…
Q: Nitrogen trichloride, also known as trichloramine, is the chemical compound with the formula NCl₃.…
A:
Q: theoretical yield of ammonia
A:
Q: We watched 5 reactions: Thermite Hydrogen combining with oxygen to form water. Water splitting into…
A: Given five reactions: Thermite Hydrogen combining with oxygen to form water. Water splitting into…
Q: The First Law of Thermodynamics, known as Conservation of Energy, states that when energy is…
A: Explained as follows
Q: Thermochemistry 1 Name Tbp AH fus ΔΗ C solid C liquid C gas vap (°C) (°C) (J/g) (kJ/mol) (J/ go°C)…
A:
Q: When you turn on a flashlight that uses batteries, what is the energy transformations taking place?…
A: According to the energy conservation rule, the total energy of the universe remains constant. Energy…
Q: Complete the below examples by stating which types of energy the objects starting with and what its…
A: Glow stick on cracking, the glass inside gets broken. Its ingredients start mixing freely and react,…
Q: TU au point What is the energy change when the temperature of 13.1 grams of solid nickel is…
A: -> Energy is related to the mass, change in temperature AND the specific heat of the material.…
Q: Which of the following compounds has the strongest chemical bond? a. salt b. sugar c. water d.…
A: The strength of a bond is defined by how firmly an atom is attached to another, and consequently…
Q: QUESTION 5 Which of the following is not a direct conversion of the Sun's energy? O radiation O…
A:
Q: The enthalpy change when an electron is added to 1 mole of gaseous atoms is nknown as that elements
A:
Q: Use the References to access important values if needed for this question. Expressing amounts of…
A: All above energy conversions can be done as follows:
Q: What mass (in g) would an object need to have if travelling at 10.0 m/s caused it to possess a…
A:
Q: Which pair of elements is both malleable and able to conduct heat? Group of answer choices gold and…
A: Answer is gold and neon
Q: Consider an internal combustion engine like that used in automobiles. The most common fuel used here…
A: Given: Let the 8-cylinder engine displacement be 500 in3 total. Pressure P =1 atm T = 298 K Write a…
Q: . Explain potential and kinetic energy in chemical terms.
A: Energy are of different kinds like thermal energy, chemical energy, mechanical energy etc. In simple…
Q: what is the heat formation of electron?
A: Heat formation of electron is also called as "electron gain enthalpy" .
(BASIC QUESTIONS) Choose or tick the phase of matter that is being described
CHOICES:
- GAS
- LIQUID
- EITHER
- NEITHER
- Highest kinetic energy among its molecules
- Has a definite mass
- Molecules are tightly packed in an organized manner
- Follows the shape of its container
- Molecules move in random motion
Step by step
Solved in 2 steps
- You have two distinct gaseous compounds made from element X and element Y. The mass percents are as follows: Compound I: 30.43% X, 69.57% Y Compound II: 63.64% X, 36.36% Y In their natural standard states, element X and element Y exist as gases. (Monatomic? Diatomic? Triatomic? That is for you to determine.) When you react gas X with gas Y to make the products, you get the following data (all at the same pressure and temperature): 1 volume gas X + 2 volumes gas Y 2 volumes compound I 2 volumes gas X + 1 volume gas Y 2 volumes compound II Assume the simplest possible formulas for reactants and products in the chemical equations above. Then, determine the relative atomic masses of element X and element Y.You have two distinct gaseous compounds made from element X and element Y. The mass percents are as follows: Compound I: 30.43% X, 69.57% Y Compound II: 63.64% X, 36.36% Y In their natural standard states, element X and element Y exist as gases. (Monatomic? Diatomic? Triatomic? That is for you to determine.) When you react gas X with gas Y to make the products, you get the following data (all at the same pressure and temperature): 1. volume gas X + 2 volumes gas Y2 volumes compound I 2. volumes gas X + 1 volume gas Y2 volumes compound II Assume the simplest possible formulas for reactants and products in the chemical equations above. Then, determine the relative atomic masses of element X and element Y.Suppose that you are closing a cabin in the north woods for the winter and you do not want the water in the toilet tank to freeze. You know that the temperature might get as low as 30. C, and you want to protect about 4.0 L water in the toilet tank from freezing. Calculate the volume of ethylene glycol (density = 1.113 g/mL; molar mass = 62.1 g/mol) you should add to the 4.0 L water.
- 5.127 Photosynthesis produces glucose (C6H12O6) and oxygen from carbon dioxide and water:If limestone is interacted with an acid, it liberates a gas made from: a. water vapor b. methane c. oxygen d. carbon dioxide *This is a multiple choice type of questionYou have two distinct gaseous compounds made from element X and element Y.The mass percents are as follows: Compound I: 30.43% X, 69.57% Y Compound II: 63.64% X, 36.36% Y In their natural standard states, element X and element Y exist as gases. (Monatomic? Diatomic? Triatomic? That is for you to determine.) When you react "gas X" with "gas Y" to make the products, you get the following data (all at the same pressure and temperature): 1 volume "gas X" + 2 volumes "gas Y" → 2 volumes compound I 2 volumes "gas X" + 1 volume "gas Y" → 2 volumes compound II Assume the simplest possible formulas for reactants and products in the chemical equations above. Then, determine the relative atomic masses of element X and element Y.
- The U.S. proven natural gas reserves in 2013 were 323 trillion ft3 . How long will these reserves last if there are no imports or exports and if the U.S. annual rate of use of 24.5 trillion ft3 continues?The mystery fuel speedster! (Homework ) For fun, you build an explosive car with your little brother by attaching wheels to an empty windshield washer container. To advance it, you add 1.20 ml ( = 0.7915 g/ml) of a liquid but volatile fuel into the container. You close the cap and shake to evaporate the liquid. Finally, you place the car on its wheels, remove the cap and insert a burning wooden rod into the container. A flame suddenly comes out of the car, which is propelled with good speed in front of your little brother surprised, but all upset by the maneuver. The volatile fuel is composed of 37.5% carbon, 12.6% hydrogen and 49.9% oxygen. Its molar mass is approximately 32.0 g/mol. During the reaction, the fuel (gaseous) burns in the presence of gaseous oxygen, and the products of the reaction are carbon dioxide and water, gaseous too. The volume of the windshield washer container used is 4.00 litres. Useful Info: There is 21.0% gaseous oxygen in the air and initial conditions…Nitroglycerin is a dangerous powerful explosive that violently decomposes when it is shaken or dropped. The Swedish chemist Alfred Nobel (1833-1896) founded the Nobel Prizes with a fortune he made by inventing dynamite, a mixture of nitroglycerin and inert ingredients that was safe to handle. A.) Write a balanced chemical equation, including physical state symbols, for the decomposition of liquid nitroglycerin ( C3H5(NO3)3 ) into gaseous dinitrogen, gaseous dioxygen, gaseous water and gaseous carbon dioxide. B.) Suppose 79.0L of carbon dioxide gas are produced by this reaction, at a temperature of −8.0°C and pressure of exactly 1 atm . Calculate the mass of nitroglycerin that must have reacted in grams. Round your answer to 3 significant digits
- Although we tend to make less use of mercury these days because of the environmental problems created by its improper disposal, mercury is still an important metal because of its unusual property of existing as a liquid at room temperature. One process by which mercury is produced industrially is through the heating of its common ore cinnabar (mercuric sulfide, HgS) with lime (calcium oxide, CaO). 4 HgS(s) + 4 CaO(s) → 4 Hg(l) + 3 CaS(s) + CaSO4(s) What mass of mercury would be produced by complete reaction of 10.7 kg of HgS? kgCombustion of hydrocarbons such as undecane (C11H24) produces carbon dioxide, a "greenhouse gas." Greenhouse gases in the Earth's atmosphere can trap the Sun's heat, raising the average temperature of the Earth. For this reason there has been a great deal of international discussion about whether to regulate the production of carbon dioxide. 1. Write a balanced chemical equation, including physical state symbols, for the combustion of liquid undecane into gaseous carbon dioxide and gaseous water. 2. Suppose 0.310kg of undecane are burned in air at a pressure of exactly 1atm and a temperature of 18.0°C. Calculate the volume of carbon dioxide gas that is produced. Round your answer to 3 significant digits. = LCalculate the number of Argon atoms necessary to exactly cover a “metric” football field witha layer of Argon atoms that is one atom thick. Assume the football field is 100.0 m long and 50.0 m wide. Assume the kinetic diameter of an Argon atom is 3.4 Å and is to be taken as the actual diameter of the atom, d. Assume that the Argon atoms are all touching each other at their edges so that the center of each atom is 3.4 Å away from the next closest atom. (1.000 Å = 1.000x10-10m)
