Perform the given calculation. You must round correctly and report the answer with the proper number of significant figures. 1.012 × 10-³ J = (0.016456 g) (298.3682 298.3567) K J g.K

Q: Calculate the amount of calories required to raise the temperature of 21.8 g of water from 8.5°C to…

A: Given,The mass of water =21.8 g.Initial temoerature of water = 8.5 oCFinal temperature of water =…

Q: Aqueous hydrobromic acid (HBr) will react with solid sodium hydroxide (NaOH) to produce aqueous…

A:

Q: Which molecule or ion has 24 valence electrons?     diphosphorus pentaoxide, P2S5…

A: In P2S5 we have 2 P and 5 S atoms Since each P has 5 valence electron and each S has 6 valence…

Q: A student sets up the following equation to convert a measurement. (The ? stands for a number the…

A: Covert  j/Mol into kj/Mol

Q: A chemist prepares a solution of aluminum chloride AlCl3 by measuring out 4.42g of aluminum chloride…

A: Interpretation -  To determine the  concentration ( in mole/L ) of the chemist's aluminum chloride…

Q: 8.42×104 J  to Cal Express the value in Calories to three significant figures.

A: One calories is equal to 4.2 joules

Q: student is asked to make up a 16% sodium chloride solution. She makes the solution by weighing an…

A: Given that: Mass of the beaker = 98.56 g Mass of the beaker and sodium chloride = 114.71 g Mass of…

Q: A chemist must prepare 450. mL of 1.00 M aqueous barium chloride (BaCl,) working solution. She'll do…

A: Molarity of stock BaCl2 solution(M1) = 1.27 M  Molarity of final BaCl2(M2) = 1.00 M V2 = 450. mL

Q: A student sets up the following equation to convert a measurement. (The ? stands for a number the…

A:

Q: A student adds 3.993 grams of salt to a beaker and then adds an additional 69.220 grams of water to…

A: Percent mass: Percent mass of a compound in a solution is defined as the ratio of the mass of the…

Q: A certain liquid X has a normal boiling point of 146.10°C and a boiling point elevation constant…

A: Normal boiling point of the liquid, Tb° = 146.10 oC Elevated boiling point of the liquid,  Tb =…

Q: Convert 0.554 cal x g^-1 x C^-1 to KJ x Kg^-1 x K^-1

A: Given: Specific heat capacity in cal/g.oC = 0.554 cal/goC.

Q: Molar mass of sucrose = 342.3 g/mol ΔT = 2.14 °C qwater = 5.37 kJ qcal = 0.899 kJ Divide the mass of…

A: Given ,Molar mass of sucrose = 342.3 g/molΔT = 2.14 °Cqwater = 5.37 kJqcal = 0.899 kJObjective…

Q: Measuring the change in temperature versus time upon addition of a hot metal specimen to 9.53 mL of…

A: The heat absorbed by the water is calculated using the formula- q=m×C×∆T Where m is the mass of…

Q: The units of ku are mL (g−1·h−1) but the unit of ke is hour−1. Why?

A: The unit of ku is mL (g−1·h−1) but the unit of ke is hour-1 . Give the reason why there are…

Q: A certain liquid X has a normal freezing point of –3.20 °C and a freezing point depression constant…

A:

Q: how many joules are there in 71.8 kcal (1 cal 4.184 j) remember to use the significant figure rule…

A: Approach to solving the question: Detailed explanation:Examples: Key references:

Q: A chemist prepares a solution of mercury(I) chloride Hg2Cl2 by measuring out 0.000957μmol of…

A: The concentration is approximately 3.83 x 10-9 mol/L

Q: The specific heat of a certain type of cooking oil is 1.75 cal/(g ·°C). How much heat energy is…

A: To raise the temperature by 1∘ Celsius of a particular substance then for this a certain amount of…

Q: An empty beaker is placed on a balance, and its mass is recorded at 42.513 g. The beaker is removed…

A: In this question, we want to determine the mass of the sodium chloride solution ( NaCl )  You can…

Q: 8.8995 x 105 s =

A: Welcome to bartleby ! Introduction :  We have to convert the units .

Q: It is known that the boiling point of water on the Kelvin temperature scale is 373.15 K and the…

A: The freezing point of water is defined as 0.0°R on the Reaumur (R) scale and the boiling point of…

Q: A student dissolved 230.8 grams of cesium chloride in 100.0 grams of 90 °C water.  The student then…

A: 43.8 g of substance has separated out as solid. The mass of cesium chloride present in dissolved…

Q: PV 1.00 atm x70 L n RT Lxatm 0.0821 x 295 К Кхmol

A:

Q: Aqueous hydrobromic acid (HBr) will react with solid sodium hydroxide (NaOH) to produce aqueous…

A:

Q: (H₂O). Aqueous hydrobromic acid (HBr) will react with solid sodium hydroxide (NaOH) to produce…

A: Given - Weight of hydrobromic acid =38.0g Weight of sodium hydroxide =8.5g

Q: A student sets up the following equation to convert a measurement. (The ? stands for a number the…

A: -> 1 KJ = 1000 J  -> 1 mole = 1000mmole

Q: Aqueous hydrochloric acid (HCl) will react with solid sodium hydroxide (NaOH) to produce aqueous…

A:

Q: A chemist prepares a solution of nickel(II) chloride (NICI,) by measuring out 1.2x 10 jumol of…

A: Moles of NiCl2=1.2×102 μmol Volume=250 mL

Q: Tums is a popular remedy for acid indigestion. A typical Tums tablet contains calcium carbonate…

A: Given: The mass of the tablet = 1.201 g Volume of HCl = 42.035 mL The density of HCl = 1.140 g/mL…

Q: Calculate the volume in mL of 7.0 M HNO3 needed to make 675 mL of 1.5 M HNO3.  Report your answer…

A: S1  = 7 M  and V1 = ? S2  = 1.5 M  and V2 = 675 ml

Q: A student sets up the following equation to solve a problem in solution stoichiometry. (The ? stands…

A: Answer :----

Q: 2.96×104 J  to Cal Express the value in Calories to three significant figures.

A: We know that, 1 Cal = 4.184 J  1 J = 1/4.184 Cal

Q: A major component of gasoline is octane and water (H₂O). (C8H18). When octane is burned in air, it…

A: To Determine the mass of oxygen consumed when 8.24g of octane undergoes combustion

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.