A Chemistry student at Agora is calculating the average atomic mass of Potassium using the following data. Relative abundance Isotope K-39 K-41 93-12 % 6.88% Their setup and calculation are. Atomic Mass 38.964 amu 40.962 amu

Q: A student eats pasta to fuel her for the track competition the next day. As converted to energy,…

A: Law conservation of energy states that energy can neither be created nor destroyed.

Q: A bomb calorimeter, or a constant volume calorimeter, is a device often used to determine the heat…

A: Mass of Acid = 0.6158 g Molar mass = 122.12 g/mol Mole(n) = 0.6158/122.12   = 0.00504 mol…

Q: Using the table provided, what is the enthalpy for the reaction shown below: 2NO₂ (g) → N₂(g) +202…

A: Check the reaction and its enthalpy value in the table and use that reaction to calculate the…

Q: If molecules of hydrogen, nitrogen, oxygen and chlorine have the same kinetic energy which molecule…

A: average kinetic energy of molecule = (3/2)KT For all molecule at same temperature

Q: You are performing an experiment where you place 6.4673 g of Al metal at 209.82 C into a coffee cup…

A: Given, mass of Al metal =6.4673 g at 209.82 °CA coffee cup calorimeter that contains 87 g of water…

Q: Calculate the amount of heat needed to boil 151. g of acetic acid (HCH,CO₂), beginning from a…

A: Amount of acetic acid, m = 151 g Initial temperature, ti = 17 C Final temperature = Boiling point of…

Q: In the laboratory a student finds that it takes 921 Joules to increase the temperature of 13.8 grams…

A:

Q: DATA TABLE Mass of test tube Mass of test tube & metal Mass of metal Mass of calorimeter Mass of…

A: The question is based on the concept of calorimetry. whatever heat released by metal is absorbed by…

Q: em 105-Online TA TABLE Mass of test tube Mass of test tube & metal Mass of metal Mass of calorimeter…

A: The question is based on the concept of calorimetry. whatever heat released by metal is absorbed by…

Q: In the laboratory a student finds that it takes 54.9 Joules to increase the temperature of 11.0…

A: The heat capacity is the ratio of the energy supplied in the form of heat to the rise in the…

Q: ou are lost in the woods with a butane curling iron. how m,uch butane ( in grams) would you need to…

A: The Butane combustion reaction is : C4H10(g)+132O2(g)→4CO2(g)+5H2O(g)      ΔH=–2877.5 kJ/mol

Q: 2:375 Platinum is a precious metal used in making jewelry. It is rare, and as a result, extremely 4.…

A: To determine us enough energy is given for platinum to melt, we would compare the energy required to…

Q: Calculate the amount of heat needed to boil 44.5 g of hexane (C,H,4), beginning from a temperature…

A:

Q: Part A The heat of vaporization of water at 373 K is 40.7 kJ mol1 Find q for the evaporation of 471…

A:

Q: The large specific heat of water limits large fluctuations in temperature near bodies of water…

A: True or False !

Q: The dipole moment (μ�) of HBrHBr (a polar covalent molecule) is 0.831D0.831D (debye), and its…

A: This question is based upon chemical Bonding.

Q: Calorimetry of Metals Lab Set up a boiling water bath of 250 mL of water in a 400L beaker at 325…

A: Answer is explained below. Ans: The specific heat of the Aluminium is 0.87 J/(g°C).

Q: If two gasses, helium and krypton, are mixed in a rigid container and heated to 315 K. What is true…

A:

Q: Convert 7908 cal to kJ

A: Given: Energy in cal = 7908 cal.

Q: Which has the greater kinetic energy, Object 1 with a mass of 2.9 kg and a velocity of 0.71 m/s or…

A: Kinetic energy for any substance is calculated as let us consider an object with mass mand velocity…

Q: Convert 3.345MJ into pJ

A:

Q: How much energy (in calories) is required to raise 3 000kg water from 35.00C to 91.000 C (specific…

A: The mass of water = 3.000 kg = 3000 gThe initial temperature of water  The final temperature of…

Q: You will find the final temperature when 5.00 grams of aluminum at 425℃ is placed in 50.0 grams of…

A: Answer :- (j) 28.03884 (°C)  The final temperature (Tf) of the mixture = 28.03884 (°C)…

Q: Convert 52.7 Cal  to  kJ

A: 1 cal = 4.18 Jule 1 kilo=10³

Q: 3. Use the equation of the line from the above graph to determine what the temperature is ( in °C)…

A: Equation of a straight line: y = mx + c For equation A:  y = -0.44x+45.86 The value of x here is 4.…

Q: An ideal gaseous reaction (which is a hypothetical gaseous reaction that conforms to the laws…

A:

Q: Find one chemical reactions that produce heat (exothermic) and one chemical reaction that absorb…

A: CaO + H2O → Ca(OH)2  this an exo thermic reaction  H2+I2 →2HI this is an endo thermic reaction

Q: Convert 3.345MJ into J

A: We know that , 1 Mega = 106 units  1 M = 106 units By using this relation we can convert the mega…

Atomic Structure

The basic structure of an atom is defined as the component-level of atomic structure of an atom. Precisely speaking an atom consists of three major subatomic particles which are protons, neutrons, and electrons. Many theories have been stated for explaining the structure of an atom.

Shape of the D Orbital

Shapes of orbitals are an approximate representation of boundaries in space for finding electrons occupied in that respective orbital. D orbitals are known to have a clover leaf shape or dumbbell inside where electrons can be found.