Convert 24.9lbs to kilograms. Do not include unints, do pay attention to sig figs.

Q: During cold weather, calcium chloride is added to concrete to increase the speed at which the…

A: Here 100 ml samle of aqueous solution of calcium chloride is diluted to make volume 345 ml and the…

Q: How many kcal/mol are in 211.8 kJ/mol? Do not put units in your answer. Give your answer to two…

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Q: A student prepares a 1.1 mM aqueous solution of acetic acid (CH₂CO₂H). Calculate the fraction of…

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Q: Time (s) [A] (M) [A] vs. t In [A] vs. t 1/[A] vs. t 0 0.00320 10 0.00251 20 20 0.00208 40 40 0.00154…

A: Plotting the integrated rate law as a straight line is possible for all common types of reactions,…

Q: Solid copper(II) chloride forms a hydrate of formula CuCl2 ⋅ xH2O. A student heated a sample of…

A: Here we are required to find the percentage of anhydrous copper chloride

Q: Convert the following measurement. 3 kg 9.6 x 10 %3D mol · L mol dL

A: Unit conversion: 1000 g=1kg1 L=10 dL (decilitre) We have to calculate following: 9.6×103 gmol.L=_…

Q: It requires two sticks of butter to make a batch of 20 cookies. How much butter will it take to make…

A: Simple use of unitary method to solve this problem

Q: What mass of water (in grams) is produced by the complete combustion of 2.68 g of ethanol, C2H5OH?…

A: Burning of any hydrocarbon gives CO2 and water from the balance equation we can calculate it .

Q: At 25 °C, K = 9.1 x 1080 for the reaction 2H2(g) + O2(g) * 2H20(g) What is the value of K. for the…

A: 1. Equilibrium is state which always occurs in reversible reactions. 2. According to equilibrium…

Q: Some cooks will tell you that they salt the water used to boil pasta because adding table salt…

A: Given : Elevation in boiling point of solution required = 5 oC And volume of water = 2 L = 2000 mL…

Q: law of conservation

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Q: The production capacity for acrylonitrile (C₂H₂N) in the United States exceeds 2 million pounds per…

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Q: kg 0.00134 mol · dL mol ·L ?

A: Given : 0.00134 kg/mol . dL 1 kg = 1000 g 1 dL = 0.1 L

Q: A chemist adds 40.0 mL of a 0.083 mmol/L sodium thiosulfate (Na, S,0,) solution to a reaction flask.…

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Q: You are asked to calibrate a 25.00 mL volumetric pipet. You determine that the temperature of your…

A: Here we have to calibrate the pipet using mass and density of water.Given,mass of water transferred…

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

A: Welcome to bartleby ! We have to calculate excess weight of HBr

Q: Food safety guidelines recommend that a beef rib roast (bone-in) should cook for 23.0 minutes per…

A: beef rib roast (bone-in) should cook for 23.0 minutes per pound based on a 325 °F oven setting…

Q: In an experiment, calcium carbonate reacted with different volumes of hydrochloric acid in water.…

A: Calcium carbonate reacts with hydrochloric acid to form the carbon dioxide gas.

Q: A. When 0.5g of iron filing was placed in a container with 2.0g of sulfur powder, this is called a…

A: Mixture - when two or more substances mix together in any proportion they form a mixture which…

Q: The solubility of KNO, is 155 g per 100.0 g of water at 75 °C and 38.0 g at 25 °C. What mass of KNO,…

A: A saturated solution of KNO3 is cooled to form crystals.

Q: Convert 3.97×1010 J to units of kcal.

A: By using relation between J and Kcal we can solve this problem. 3.97×1010J = 9.5 × 106 Kcal

Q: themist prepares a solution of potassium chloride (KCl) by measuring out 43. mg of KCl into a 50. mL…

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Q: Macmillan Learning Red gold is a gold-copper alloy used to make jewelry. A piece of jewelry made of…

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Q: Suppose you need a tank of oxygen that is 95% pure. Describe a process by which you could obtain…

A: Liquid nitrogen and oxygen are completely miscible, so the free energy of the mixture is everywhere…

Q: Benzene is especially stable due to... the electrons of the double bonds are delocalized O its…

A: The delocalization of electrons provide extra stability to the compounds.

Q: You weigh a dry flask, and place a chunk of solid into it, then weigh it again. You then fill the…

A: The volume of the flask not occupied by the solid is needed to be find out.

Q: X 26. In the question above, two liquids react together to form a solid. What term is given to this…

A: A precipitation reaction happens in aqueous solution because one product is not soluble. A insoluble…

Q: While excavating ancient remains, an archaeologist discovers a box of minted coins. The nineteen…

A: Given: Mass of coins = 1.23 lbs. Melting point of coins = 1981 oF And the change in volume of the…

Q: Life-cycle assessment (LCA) is defined as the study of resource consumption, emissions, and their…

A: Now LCA is basically concerned with the effects on the environment and the energies released or…

Q: The density of a gas sample is 1.29 g/L. How many grams of gas are there in 255 L

A: Given: Density of gas = 1.29 g/L Volume of gas = 255 L

Q: Once you have completed your chemistry experiments, either by producing products or leaving reagents…

A: The answer for this problem is provided below in great details within the attached figure.

Q: II II Time, Time, Time, [A], M [A], M [A], M 1.00 0.78 1.00 0.75 0.50 0.25 0.00 1.00 25 25 25 0.80…

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Q: A mixture has three components. The percentage of sand was determined to be 37.31 %, the percentage…

A: Given: percentage of sand = 37.31 % percentage of benzoic acid = 37.45 % percentage of salt = 31.69…

Q: 7.62 x 10^6 J to kcal

A: We have to convert given quantity to kcal unit.

Q: A chemistry student must write down in her lab notebook the concentration of a solution of sodium…

A: Answer

Q: A student prepares a 0.70 mM aqueous solution of butanoic acid (C,H,CO2H). Calculate the fraction of…

A: This question is from chapter Ionic equilibrium where we are dealing with a weak acid like butanoic…

Q: Convert the following measurement. kg 4 5.4 x 10 g mol · L mol · dL

A:

Q: A student conducts an experiment using an unknown hydrate and obtains the following data Crucible…

A: Given - Crucible =  24.31g Crucible+ hydrate = 29.31g Crucible+ anhydrate =  28.26g Mg % = 29.44% S…

Q: Can you actually write this out? It makes it much more difficult to read when it gets written out…

A: The mass of solute in gram present in 100 g solution is known as the mass percent concentration of a…

Q: Suppose a student places a beaker on his balance and does not tare it. Then, he adds three…

A: Here you should understand that if you have nothing in the beaker it is the empty weight of beaker.

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.