What is the mass of 9.45 moles of Al2O3? After correctly solving for the molar mass of Al2O3, Jacob set up the following conversion: 1 mole Al, 0, 9.45 moles Al2O3* 102.2 grams of Al, O₂ Is this answer correct? = 0.0926 grams of Al₂O3

Q: I Review I Constants I Pe When a 0.600 g sample of olive oil is burned in a calorimeter, the heat…

A: The heat gained by 370 g of water equals the heat lost by 0.600 g sample of olive oil.

Q: Explain how chemical reactions obey the law of conservation of energy. Include where energy is found…

A: Answer -  law of conservation of energy - The total energy of an isolated system remains constant…

Q: Magnesium will burn in air to form both Mg3N2 and MgO. What mass of each product would be found if…

A:

Q: Gaseous ethane (CH3 CH3) will react with gaseous oxygen (O₂) to produce gaseous carbon dioxide (CO₂)…

A: A balanced chemical equation contain equal number of atoms of each elements on both sides of the…

Q: When a chemical reaction or a phase change occurs and energy is released to the surroundings then…

A: Since you have asked multiple question, we will solve the first question for you.If you want any…

Q: What's a hypothesis about the experiment Enthalpy Changes in Chemical Reactions?

A: In a chemical reaction, heat may be absorbed by the system or heat may be evolved by the system.…

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: 1.If your temperature changes from 20oC to 25oC—how much change is there in the mass of a 10.00 mL…

A: 1. Initial temperature(T1) = 20°C                              Final temperature(T2) = 25°C Initial…

Q: Consider the generic compound MX3. M3+ is the metal cation and X– is the nonmetal anion. A. Balance…

A: To write the reaction from i through vii, we would use the given reaction process names.  i.) For…

Q: 2. When 39.0 grams of silver are cooled from 80.0°C to 63.0°C, 159 joules of heat are released.…

A: Specific heat:The amount of heat required to increases the temperature of the 1 g of the substance…

Q: What is the specific heat of silver?

A: Specific heat ---- The heat requires to raise the temperature of one gram of substance by one degree…

Q: A certain chemical reaction releases 21.4 kJ/g of heat for each gram of reactant consumed. How can…

A: 38520kj heat produced by the consumption of 1.8kg of reactant.

Q: J cal kJ 688 199 0.585

A: 1 cal = 4.184 J  1kJ = 1000 J

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: Indicate whether the statement is true or false.____ 1. Enthalpy changes for an exothermic reaction…

A: Step 1: Enthalpy changes for an exothermic reaction are given a negative sign. The given statement…

Q: What is the percent of the element which is underlined for each of the following compounds?

A: percent of an element = (mass of element/molar mass of compound) ×100%

Q: N of NH O Br 1. 2. H3O+ 1. NaOH 2. ~ 3. H30*, heat 1. NH3, H* 2. KCN, H* 3. H30* Br

A:

Q: A scientist wants to perform a reaction in a vacuum chamber to control the experiment as much as…

A: Since experiment is performed in the vacuum it means their exist no medium and he wants to determine…

Q: The figure above shows a liquid of diatomic bromine in equilibrium with its vapor. Compare the…

A: A question based on chemical bonding, which is to be accomplished.

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: An isolated system is one that O exchanges heat and matter with the surrounds. exchanges neither…

A: answer : selected answer is correct

Q: Once you have completed your chemistry experiments, either by producing products or leaving reagents…

A: The answer for this problem is provided below in great details within the attached figure.

Q: Include a CLAIM: answer the question. For example, this answer is not correct. Include EVIDENCE:…

A: Given that -  Following balanced chemical equation is given -    Also the number of moles of…

Q: 11. Eric watches the snow melt outside. He claims it is an exothermic process. Maggie tells her it's…

A: Please find your solution below : 11. When a process absorbs the heat, it is called endothermic…

Q: Write “True” or “False” next to the following statements.                         Beaker A with 300…

A: Heat capacity or thermal capacity is a physical function of matter, defined as the volume of heat to…

Q: Calculate the percent difference between x2 and x4 according to the equation below. (Assume x2 to be…

A: Given :  x2 = 100.4 kJ (Assume x2 to be the accepted value) x4 = -100.4 kJ

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.