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. Note: your answer should be in the form of one or more fractions multiplied together. 0.020 2).0- dL = ? g mL x10 ロ・ロ X 0|0

Q: Gaseous phosphorus pentachloride decomposes according to the reaction PCIs(g) PCl3(g)+Cl2(g) a. The…

A: we have given the equilibrium concentrations, so we can find the value of the equilibrium constant.…

Q: 57. Find A.Sº for the formation of CH₂Cl2 (g) from its gaseous elements in their standard states.…

A: The concept used here us from Chemical thermodynamics of physical chemistry.  Entropy is the measure…

Q: The reduction of aluminum ions occurs as: Al3+ (aq) +3 € -> Al (s) After applying a certain amount…

A: Answer:- This question is answered by using the simple concept of electrolysis in which electric…

Q: Which statement best describes the First Law of Thermodynamics? Change in internal energy of a…

A: To solve this problem we have to explain the first law of thermodynamics .

Q: Select the correct claim and reasoning for the process that is exothermic. 1) Melting butter 2)…

A: To Select the correct claim and reasoning for the process that is exothermic.   1) Melting butter 2)…

Q: 1. All the following have a linear shape except 03 B) O3 C) 13 D) XeF2 E) CS2 A) BeCl₂ B)

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Q: How many miles of H2O are contained in a 15.0 L stainless steel container at a pressure of 945 mmHg…

A: Mole is defined as weight of substance divide by it's molar mass

Q: A 8.00L tank at 10.7°C is filled with 6.80g of carbon dioxide gas and 17.8g of sulfur tetrafluoride…

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Q: Complete and balance the following redox reaction in basic solution. Be sure to include the proper…

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Q: Based on the bond energies for the reaction below, what is the enthalpy of the reaction, in kJ?…

A: Given : reaction and data  Tip : ∆Hrxn = (B.E)reactants - (B.E)products

Q: Which of the following aqueous solutions are buffer solutions? (Select all that apply.) 0.37 M HCIO…

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Q: Which of these is an exception to the octet rule? O a. NF3 O b. H3O+ O c. CO2 O d. PC13 O e. IF4+

A: According to octet rule, every element form bond with another element in such a way so as to obtain…

Q: Chemistry help please Determine the product of the following reaction. PCC л он CH₂Cl₂ III ON…

A: Pcc is mild oxidizing agent  Lindlar catalyst convert alkyne into alkene

Q: This is a Dry Lab since we cannot meet on Campus. You would have first calibrated a pH meter and…

A: Concept: pH = -log H+ where, [H+] =Concentration of H+

Q: A solution of NaCl(aq) is added slowly to a solution of lead nitrate, Pb(NO3)₂(aq), until no further…

A: Answer: In this question we have to convert the mass of PbCl2 into moles of Pb(NO3)2 to find out its…

Q: Converting a 5.00 g sample of liquid cyclohexane (C6H₁2) at 30.7 °C to vapor at 140.7 °C requires kJ…

A: According to law of calorimetry when temperature of a substance increases then it absorb heat.But…

Q: QUESTION 6 The functional group contained in the compound CH3CH2-O-CH3 is a(n) alkene. ketone.…

A: The group of atoms containing heteroatoms is known as a functional group. The functional group…

Q: QUESTION 5 Organic chemistry is the study of the chemistry of compounds of hydrogen. O carbon.…

A: Organic chemistry is one of the crucial branch of chemistry.

Q: 14. SiH4 15. NO₂ 16. BrF3

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Q: What is the daughter nuclide when U-238 experiences alpha decay? (Write your answer as a symbol-mass…

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Q: Dinitrogen difluoride gas is collected at 21.0 °C in an evacuated flask with a measured volume of…

A: To solve this problem we will use the ideal gas equation .  PV = nRT  Where ,  P = pressure  V=…

Q: Given the following reactions H20 (1) H2O (g) 2H2 (g) + O2 (g) 2H2O (g) AH = -483.64 kJ the enthalpy…

A: Given the following reactions   H2O (l) -> H2O (g)         ∆H = 44.01 kJ 2H2 (g) + O2 (g) ->…

Q: Which of these reactions doesn't have an intermediate?

A: Given: structure of reactants

Q: 69. Consider the sublimation of iodine at 25.0°C: I₂ (s) → 1₂ (9) a. Find AG at 25.0°C. b. Find…

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Q: Determine the value of Kc at 25 °C for the reaction 2H₂O + 2Cl₂4H* + 4CI¯ + O₂ E° (Volts) +1.36…

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Q: A patient is given 0.050 mg of Tc-99. How long until the isotope decays to 6.3 x 10-3 mg? (Half life…

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Q: Q represent a mass (in grams) of carbon , whose half-life is  5715 years. The quantity of 1 carbon…

A: Given , Half life of carbon = 5715 years

Q: 1.In what PEL are the Valence electrons for an atom of lead found?   2.How many unpaired electrons…

A: 1. Atomic number of lead = 82  Its condensed electronic configuration is  [Xe] 6s2 4f14 5d10 6p2 Its…

Q: An Arrhenius acid is a substance that dissociates into protons (H+) and an anion (A) when dissolves…

A: Acid increase concentration of hydrogen ion in aqueous solution

Q: a. b. Synthesis HC = CH OH PBr3 H-CECO NaⒸ Li/NH3 CH3 - CH₂ - CH₂ - CH3 Br KOH a) 03 b) Zn, H+

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Q: How many grams of sodium sulfide calcium hydroxide are necessary to create 129.5 mL of a 0.15 M…

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Q: A galvanic cell was constructed with a nickel electrode that was dipped into 1.3 M NISO4 solution…

A: Answer:- This question is answered by using the simple concept of calculation of concentration using…

Q: QUESTION 16 Which of these formulas is the expanded structural formula for an alkane with three…

A: We will draw molecule asked and then give expanded structural formula.

Q: 19) Which of the following is not a valid set o four quantum numbers? (n, 1, m/, ms)

A: In an atom, the electrons are present in the atomic orbitals. The energy, size, and shape of atomic…

Q: 3. Given the thermochemical equation: SO₂(g) + O₂(g) → SO3(g) AHxn =-99 kJ Calculate how much heat…

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

Q: Give a correct name for the following compound: CH3 NO₂ CH2-CH-CH-CH2 CH3 01 NO₂ 1-methyl-2,3…

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Q: Below is a molecule of acetic acid (CH3COOH) interacting with water molecules. H. brigh :O:H I H H…

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Q: Given AH = -90.25 kJ for the reaction below: NO(g) → ½ N2(g) + ½ 02(g), calculate AH for the…

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Q: 9:34 PM Sun Dec 4 bbhosted.cuny.edu LTE 76% QUESTION 8 The functional group contained in the…

A: Functional group is  a atom or group of atom when attached to molecules it changed its property .

Q: Draw the major product of this acid-base reaction. include all lone pairs. Ignore inorganic…

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Q: 2. All the following are polar except A) O3 B) CIF3 C) COC12 D) D) BrO3 E) CS3²- BrO3

A: Molecule is non polar if the all bond moments cancel each other.

Q: Iron-59 is a radioisotope that is used to evaluate bone marrow function. The half-life of iron-59 is…

A: Given data is The half-life of iron-59 =  44.5 days. Initial quantity of iron-59 = 44.7 mg

Q: A certain weak base has a K₂ of 7.70 × 10-¹. What concentration of this base will produce a pH of…

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Q: Question 12 Sort the following phases of matter from least viscous (top) to most viscous (bottom).…

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Q: The graph below shows the probability of molecular velocities for sulfur hexafluoride gas (SF6) at…

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Q: A moon rock collected by a U.S. Apollo mission is estimated to be 3.50 billion years old by…

A: Given , Age of sample collected from moon t= 3.5 billion year =3.5×109 year

Q: When aqueous solutions of lead (II) nitrate and potassium iodide are mixed, a precipitate forms.…

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Q: Question 48 What mass (g) of KBr is required to make 42 mL of 0.52 M KBr(aq) solution?

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Q: Starting with the following equation, Pb(NO₃)₂(aq) + K₃PO₄(aq) → Pb₃(PO₄)₂(s) + KNO₃(aq) calculate…

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Q: What is the main product when Pa-233 undergoes alpha decay

A: A question based on nuclear chemistry. An isotope Pa-233 that undergoes alpha decay is prescribed…

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.