What is the Kw of a 0.00018 M hydrochloric acid solution?     1.8 X 10-4     3.74     1.0 X 10-14     10.26     5.56 X 10-11

Q: How many calories are needed to raise the temperature of 89 g of water 2°C?

A: Here we have to apply the formula for heat  mass = 89g

Q: The Kw for water at 1°C is 1.0 × 10-15. Calculate the [H3O+] and [OH-] in 0.20 M HI at this…

A: Answer is explained below.

Q: 5.50 g of solid sodium hydroxide is dissolved in 175 mL of water. Using a coffee-cup calorimeter,…

A: 4.  Given that,  Amount of solid NaOH dissolved in 175 mL water = 5.50 g Temperature change of water…

Q: The same student wanted to determine the heat of dissolution for potassium chlorate (KClO3, MW:…

A: The heat of dissolution for KClO3 is = 3803.8 J

Q: Based on the constant given below, Kw = 1.0 x 1014 M²= [H3O*][OH] what is [H30*] if [OH"] = 4.2 x…

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Q: 2QJ3 (g) + 3Q2X (g) – 4Q2 (g) + 3J2X (I) 4QJ3 (g) + 3X2 (g) – 2Q2 (g) + 6J2X (1) Calculate the value…

A: We are given a pair of reactions, with respective enthalpy. we need to calculate enthalpy of…

Q: How many calories are required to increase the temperature of 13g of alcohol from 11 degrees celsius…

A: q = mc∆T Where q = heat required  c = specific heat  ∆T = change in temperature

Q: Background info: A unit of heat energy=calorie=amount of heat that raises 1 g of liquid water by 1…

A:

Q: Because the café is very popular, it usually has enough people inside to keep the indoor temperature…

A: for noon time period.add all the loads and customers interms    total internal gain for the cafe…

Q: 1. 30.0 g of oxygen gas are diluted with 60.0 g of nitrogen gas in a 82.0 L container at standard…

A: Given,  Mass of oxygen gas = 30.0 g  Mass of nitrogen gas = 60.0 g  Volume of the container = 82.0 L…

Q: How many calories are there in a 255 Calorie snack bar? 60.9 none of the above 1.07 x 103 2.55 x 105…

A: Option d is correct. 2.55 *10^5. There are 1000 calories in every Calorie.If you take 255 x 1000…

Q: What is the value 685 kJ in units of cal? O 2.87x10° cal O 1.64x105 cal O 0.164 cal O 2.87x10° cal O…

A: kilojoules(kJ) and calories(Cal) are units of energy. The relation between kJ and Cal is as follows-…

Q: a coffee cup calorimetry, a 20.0 g of CaCl₂ is dissolved in 300 mL of water in a coffee cup…

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Q: For 36-38. An aluminum kettle weighs 1.05 kg. What is the heat capacity of the kettle? * 0.522 J/g°C…

A:

Q: Given - 1 NiCI2 + 2 NaOH -> 1Ni(OH)2 + 2 NaCl Q. Calculate the moles of Ni(OH)2 that forms if the…

A: As we know that in a reaction, (No. of moles of substance reacted ÷ stoichiometric coefficient) =…

Q: The air has a dry ball temperature of 34 ° C and a wet bulb temperature of 24 ° C is initially…

A:

Q: 1. 1 N NAOH .N. 2. aq. HCl (workup) H3C `CO2Et

A:

Q: Type your answer... 4 How many kilojoules (kj) of energy are released during the combustion of…

A:

Q: 6 kWhkWh to joules Express your answer using two significant figures.   Convert 229 cal to…

A: In this question, we need to convert the given value from one unit to another unit using the…

Q: Convert 7908 cal to kJ

A: Given: Energy in cal = 7908 cal.

Q: An empty coffee-cup calorimeter weighs 10 grams. It is filled with water, whose temperature is 31…

A:

Q: Identify whether the following process are ENDOTHERMIC AND EXOTHERMIC. Justify you answer. 1. Solid…

A: Endothermic reaction is the one where heat energy is taken up by the system making the surroundings…

Q: Where would the bicyclist have the highest potential energy? Where would the bicyclist have the…

A: ANSWERS:- 1) Highest potential energy will be found at highest point only. Here F is the highest…

Q: What is [H3O+] in a solution that has [OH-] = (2.83x10^-6) M? Enter your answer in scientific…

A: pOH = -log[OH-]  And pH + pOH = 14  And [H3O+] = 10-pH

Q: How many human eukaryotic cells does it take in a single second to use exactly one nanojoule (1 ×…

A:

Q: The amount of energy required to heat water for a 10-minute shower (50 gallons) is 2.2125 kJ. How…

A: Given   Amount of water = 50 gallon  Time = 10 minutes  Energy required = 2.2125 kJ

Q: You add hydrochloric acid slowly to the water and notices that the flask feels hot. What is the…

A: A question based on chemical thermodynamics that is to be accomplished.

Q: How many calories will a 298-pound athlete consume after running a distance of 458 yards in 3.2…

A: Given,  Mass of the athlete = 298-pound Distance = 458 yards  Time = 3.2 minutes  Amount of calories…

Q: neel. CHYPLS NaOH szer heat H30+ 2) Hz O HO NaOH heat DLOA CH H30* NaOH Br2 Br Br Br

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Q: What is the final temperature when 640 calories are given off (-q) by 40.0 grams of water at 45.0…

A:

Q: Convert each of the following amounts of energy 1. 105 J = 0.0a25 Cal %3D 105J-1 Cal =0.025Cal 4184…

A: Since you have asked a question with multiple sub-parts, as per our company guidelines we are…

Q: qmetal = -1710 J and qH2O = 1430 J.  ΔTH2O = 10.1 oC.  Calculate the calorimeter constant, Ccal in…

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Q: A bicyclist is stopped at the entrance to a valley, as sketched below: D B. Where would the…

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Q: H 1. HO он (1 еquiv.) cat. TSOH H PhH (benzene, solvent) 2. LİAIH,/THF 3. NaOH/H,O (workup)

A: To obtain the required product we have to follow the following steps. In step -1 protection of the…

Q: Please choose the letter of the correct answer. I will rate your answer   3. Extra energy is…

A: The biological significance of organic compounds, its structure, reactivity, and interactions are…

Q: 10. What volume of 185"C water must be added, together with a 1.23 kg piece of iron at 68.5 C, so…

A: The heat transferred during the reaction can be determined the equation, q = mc∆TThe temperature of…

Q: Natural gas, or methane, is an important fuel. Combustion of one mole of methane releases 802.3…

A:

Q: Natural gas, or methane, is an important fuel. Combustion of one mole of methane releases 802.3…

A: The question is based on the concept of physical chemistry. we have to convert the given energy into…

Q: A 1.0−g sample of a candy bar (which contains lots of sugar and fats!) was burned in a bomb…

A: Given: Temperature difference = 3.0 °CMass of water = 1.00×103 gWeight of candy bar = 3.0 ounceFuel…

Q: A student heats a piece of 130 g of an unkown grayish metal to a temp. of 99.2 °C. she places the…

A: Given;

Q: An empty coffee-cup calorimeter weighs 10 grams. It is filled with water, whose temperature is 31…

A: Weight of empty coffee cup calorimeter = 10g Weight of coffee cup calorimeter filled with water =…

Q: Use the data given below to calculate AH° for the reaction, in units of kJ: A2B2 + B A2B3 Data: AH°…

A: The given data is as follows: A2B2 + B → A2B3                ∆Hrxn°=? 2A2B3 + 11C → 4AC2 + 3B2C…

Q: ΔΗ- kJ

A:

Q: How many grams of ethanol (C2H5OH) is needed to provide/release 699.0 kJ of heat? C2H5OH(l) + 3O2(g)…

A: The given reaction is,

Q: Natural gas, or methane, is an important fuel. Combustion of one mole of methane releases 802.3…

A: According to the question: combustion of one mole of methane releases 802.3 kilojoules of energy.

Q: If Great Lakes Christmas Ale is about 7.5 ethanol ABV (alcohol by volume) it actually about 6% ABW…

A: Given : % w/v of alcohol = 6 % = 6 g/100 mL Volume of alcohol = 500 mL And caloric content of…

Q: It took 16641664 J to raise the temperature of a sample of water from 12.512.5 °C to 34.534.5 °C.…

A: Relation between Calorie and Joule: 1 Calorie = 4.184 Joule

Q: he temperature at 6:00 am was - 1.8°F the temperature change over the next 12 hours was 35.7°F the…

A: Temperature at 6:00 am was = -1. 8°F

Q: Given: 2A(g) ⇄ B(g) + C(g) ∆H˚ = +27 kJ K = 3.2 x 10-4 Which of the following would be true if…

A: