A student sets up the following equation to convert a measurement. (The ? stands for a number the student is going to calculate.) Fill in the missing part of this equation. (-8.6 × 10¹ )--= x cm

Q: Write the basic equilibrium equation for NH3 NH3(aq) + H₂O(1) NH OH(aq)

A: we have to write basic equilibrium equation for NH3

Q: For the following reaction K = 30.0 2A(aq) -> B(aq) + C(aq) The initial concentration of A is 1.7 M…

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Q: If the pH is 9.85, what is the concentration of the aluminum hydroxide solution?

A: pH is expressed as negative log10 of hydronium ion concentration.

Q: Consider the following reversible reaction to answer questions 1-4. It is EXOTHERMIC. 2 CO2 (g) 4 2…

A: 1.)  We would write expression for Kc . 2.) Plug given values of concentration of each compound at…

Q: help I DONT UNDERSTAND!

A: The question is asking to calculate the enthalpy of the reaction by using given two reactions,…

Q: Write the name of the element next to the atom. You may need to use the Periodic Table to help yoU…

A: Atom is the indivisible smallest unit of matter. Atom is made with fundamental particles. Electron,…

Q: Help! I DONT UNDERSTAND

A: The question is asking to calculate the enthalpy of the reaction by using given three reactions,…

Q: hi is there a better way to solve these problems because i do not understand anything here

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Q: In the reaction shown below, is 1-pentene being oxidized or reduced ? CH2=CHCH,CH,CH3 1-pentene + H₂…

A: Oxidation = Removal of electrons  Addition of oxygen or removal of hydrogen. Reduction= Addition of…

Q: PURPOSE: you will create a cartoon/ comic that explains a scenario about Tonic bonding. SCENARIO:…

A: Before getting started with the script and scenario, we need to know the basic of an ionic bond.…

Q: Silver metal crystals have an FCC structure. The unit cell edge in silver is 0.4086 nm long. What is…

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Q: I don't understand. What do I do?

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Q: 2. Hydrogen iodide, HI, has an AEN = 0.4. Use the given dipole moment, 0.44 D, and bond length of…

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Q: he fe 2. A student, performing the same experiment as you, recorded the following information.…

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Q: Show Answer Provide the correct common name for the compound shown here. CH3 Br CI ortho-bromo…

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Q: I really need help with this it is really hard to me and Idk what to do can you please help me

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: Shown below, Baker spotted the three-component mixture onto a TLC plate and developed it using the…

A: A question based on analytical separations that is to be accomplished.

Q: A 5.75 g sample of aluminum chloride and sodium sulfate has a freezing point depression of 3.22 °C.…

A: The freezing point depression is given by the mathematical expression: ∆Tf=iKfm    ----------(1)…

Q: Write the name of the element next to the atom. You may need to use the Periodic Table to

A: For  naming of the atom we should know number of electrons and protons

Q: A concentration cell is constructed of silver electrodes at 25 °C, and the half cells contain…

A: Given,  A concentration cell constructed with Ag electrode,  The concentration of Ag+ ion equals to…

Q: (a) Sketch a graph of the van Deemter equation (plate height versus flow rate). Sketch what the…

A: band BROADNINGA group of the same molecular species "spreading out" as they pass through a…

Q: Classify each of the following as elements (E) or compounds (C). HCI NaCI CH,COOH Fe element

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Q: 80. Base your answer to the following question on the following system at equilibrium: 2 dz(g) + 2…

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

Q: The combustion of propane may be described by the chemical equation C₂H₂ (g) +50₂(g) → 3 CO₂(g) +…

A: C3H8(g) + 5O2(g) ----> 3CO2(g) + 4H2O(g)mass of C3H8(g) reacts = 88.0 gmass of O2(g) needed =…

Q: a model explain how hot air balloons float. Your explanation shou elude all of the following: What…

A: A hot-air balloon is a lighter-than-air aircraft. It consist of a bag which is called an envelope.…

Q: I am not understand these problems. Can someone help?

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Q: Which of the following represents the generic form of a double-displacement reaction? A) A +B AB B)…

A: The reaction that involves exchange of ions between two previous and compounds that upon exchange of…

Q: A Chemistry student is asked to predict the pH of a potassium hydroxide solution when 1.82 g of…

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Q: Electron Configuration Practice Worksheet In the space below, write the unabbreviated electron…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: At 799 K, A,G° = -23.35 kJ for the reaction H2(g) + 2(g) = 2HI(g). Calculate A;G for this reaction…

A: The given chemical reaction is as follows: H2(g) + I2(g) ⇌ 2HI(g) ∆rG°=-23.35 kJT=799 K ∆rG=?

Q: The enthalpy of fusion of methanol (CH3OH) is 3.16 kJ/mol. How much heat would be absorbed or…

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Q: can someone show me the steps for how to solve this problem. I don't know what to do.

A: Convert the unit of pressure to torr as follows,

Q: Use dimensional analysis to make the following conversions. Use conversion factors and show unit…

A: Since you have asked multipart type questions, we will solve only first  three questions for you. If…

Q: 4. Look at the molecules below. Write in the blank what type of atoms you see and how many. Try to…

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Q: At a particular temperature, K = 8.7 x 10-7 for the following balanced reaction: 2H₂O(g) + C(s) →…

A: Note : “Since you have posted multiple questions, we will provide the solutiononly to the first…

Q: Which change can be easily reversed? O Chemical Change O Physical Change O Both a physical and…

A: A physical change happens when a compound undergoes changes in physical properties like color…

Q: Combining 0.214 mol Fe₂O3 with excess carbon produced 18.8 g Fe. Fe₂O3 +3C 2 Fe + 3 CO What is the…

A: For the given reaction:Fe2O3 + 3 C ------> 2 Fe + 3 CO Moles of Fe2O3 =0.214 molActual yield =…

Q: 3) NH4 (aq) + NH3 (aq) + H30" (aq)

A: The question is based on the concept of equilibrium. we are titrating a strong acid with a weak…

Q: 13. Determine whether the following bonds and molecules are polar. Indicate the direction of the…

A: Check the polarity of the compound ---

Q: 1. Calculate how much lemonade powder you will need to make 0.100 L of each solution. Fruit drink is…

A: To calculate the mass of lemonade powder needed for each solution, we need to use the molar mass of…

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.