In a certain city, electricity costs $0.20 per kW h. What is the annual cost for electricity to power a lamppost for 7.00 h per day with a 100. W incandescent light bulb versus an energy efficient 25 W fluorescent bulb that produces the same amount of light? Assume 1 year = 365 days. 100. W bulb: $ lyear 25 W blb: $ /year

Q: Can someone help me write out this conversion in the same way it is written out in the answer…

A: At STP 1MOLE OF GAS OCCUPIES 22.4 L  N 2+3H 2 -----> 2NH3

Q: the grams of each of the following. a. 4.56 x 1012 atoms Zn 4 95 x 10-1 b. 4.85 mol C2H5NH2 29g cols…

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A: Given: Weight of panda = 101.8 kg

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A: We have knowledge about two equations: One is Nernst Equation according to this, Second is…

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A: Specific heat capacity (C) :- The amount of heat required to rise the temperature of one gram of a…

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A: Chemical equilibrium is the condition of a chemical process in which both the reactants and products…

Q: 5. Answer the following questions regarding molecular structure of acids and bases. a. Circle the…

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Q: Ka= 1.76 x 10-5 for HC2H3O2 What is the pH of this solution? Table 1 Solution Buffer solution acetic…

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A: Given: Molarity of AgNO3 = 0.500 M (or mol/L) Volume of AgNO3 = 60 mL = 0.060 L Grams of AgCl = ?…

Q: cubic angstroms (1 angstrom = 10−¹⁰) Express your answer in cubic angstroms to two significant…

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Q: How many moles of NH: gas form when 32.4 Lof H. gas completely reacts at STP according to the…

A: Given data,Volume of H2=32.4L1 mol of gas=22.4LGiven reaction;N2(g)+3H2(g)→2NH3(g)

Q: How many iters of a 0.209 M KI solution is needed to completely react with 243 a of Cu(NO,)…

A: Given:  mass of Cu(NO3)2 = 2.43 g molar mass of Cu(NO3)2 = 187.56 g/mol moles of Cu(NO3)2 = 2.43 g /…

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A: Given,(i) Molarity of morpholine ( C4H8ONH ) = 1.2 MKb of C4H8ONH = 2.14 x 10-6 (ii)  Molarity of…

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A: All things are provided in handwritten solution.

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A: Unit conversion problemHere we have to convert between temperature units.

Q: Please answer this question, show all work and steps. Use units and significant figures.Thank you!!

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A: Given that: Molecules of CCl4 = 8.95×1025 Mol of CCl4 =?

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A: Given : volume of Cl2 reacting = 19.2 L Since at STP, a moles of gas has a volume of 22.4 L Hence…

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Q: Sodium hydroxide reacts with acetic acid to produce sodium acetate and water. It takes 25.0 ml of…

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A: 0.831 is the correct one.

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Q: Consider the following data on some weak acids and weak bases: acid base K. K, name formula name…

A: Applying concept of pH we can determine order of pH of given Salt.

Q: 7-9 Name the ff:

A: The solutions are given below -

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A:

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A: Recall the following expression of Molarity       Molarity=wM×VHere, mass of solute(w) is expressed…

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A: The amount of Na required will be 39.422 g

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A: The reaction considered in the question is,

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Q: 4.60 Write balanced net ionic equations for the following reactions: (a) LIOH(aq) + HI(aq) → ? (b)…

A: a)HI(aq)+LiOH(aq) -------&gt; Molecular equation is : HI(aq)+LiOH(aq)  ------&gt; LiI (aq) + H2O (l)…

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Q: 1. a. What is the pH of a solution prepared by adding 25.0 mL of 0.10 M acetic acid (Ka = 1.8 x 105)…

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Q: Please

A: We will use neutralisation concept

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Q: How many 1-fm squares does it take to construct a square that is 1 m on each side?

A: Number of square can be calculated using area of squares.

Q: hello can I ask where the density 1.59 from step 1 was from?

A:

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.