Which one of the following is the largest mass? A) 7.6 × 10ª mg B) 7.6 × 107 ng C) 7.6 × 10-2 kg D) 7.6 × 10° µg

Q: A chemist adds 370.0 mL of a 4.8 × 104 mmol/L magnesium fluoride (MgF₂) solution to a reaction…

A: Answer:Number of moles of a specie in a solution is equal to the product of its molar concentration…

Q: Given the following information, calculate the equilibrium constant (K) of the reaction at 298 K. (R…

A:

Q: O. In chemistry, the particles of matter that we encounter are quite small. The size of atoms were…

A: radius of Chlorine atom = 0.99

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

A:

Q: 7) How many kilograms is a 27 oz. bag of M&M's? 8) How many kilometers can a car travel on 19…

A: Since you have posted multiple questions, we are entitled to answer the first 3 only.

Q: The density of a proton is approximately 4.0 x 1014 g/cm³. If the mass of the proton is 1.7 x 10.24…

A: The objective of this question is to calculate the volume of a proton given its mass and density,…

Q: How many molecules are in one drop of water if 1.00 g of water contains 3.34 × 10 ²² molecules?…

A: 1 gm is equal to 1 mL. Given 1mL=20 drops.

Q: You add 297 grams of NaCl to a container and then you add 898 grams of water to that same container.…

A:

Q: Which of the statements is incorrect? Density is the ratio of the mass of the substance to the…

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Q: Multiply or divide the following measurements. Be sure each answer you enter contains the correct…

A: Significant figures are digit value which determines the accuracy of instruments.

Q: mol kg x m² 3.95× 108 mol 8x cm²

A:

Q: The source of bitterness in dark chocolate is the compound theobromine, an alkaloid present in cocoa…

A: Number of moles is defined as the ratio of given mass by the molar mass. moles =massmolar mass

Q: Al has density 2.70 g/cm3. If a solid Al cylinder is added to a cylinder which has 19.2 mL H2O, the…

A: To calculate the mass of the Al cylinder.

Q: Fingernail–polish remover is primarily acetone (C3H6O). How many acetone molecules are in a bottle…

A: Given: Volume of acetone, V = 325 mL = 325 cm3 Density of acetone, d = 0.788 g/cm3 Mass of acetone =…

Q: mass of carbon dioxide

A:

Q: Multiply or divide the following measurements. Be sure each answer you enter contains the correct…

A:

Q: How much does it weigh in grams

A:

Q: Rank the following quantities in order of decreasing mass.   Rank from highest to lowest mass. To…

A: Given masses:

Q: How many atoms are contained in 4.1 g of carbon? How can you round this answer to 2 significant…

A: 1 mole of any substance contains 6.023×1023 atoms.1 moles of carbon atoms weigh 12 g.

Q: sample of water has 2.15x1024 molecules. What is the mass of the sample?

A: Molecular weight of water = 18 g/ mol 1mol of any substance contain 6.023× 1023  number of…

Q: Gaseous butane (CH3(CH2)2CH3) will react with gaseous oxygen O2 to produce gaseous carbon dioxide…

A: As given in the question that butane reacts with gaseous oxygen to produced carbon dioxide and…

Q: Which of the following is a mixture? O cheese O calcium O sodium O water, H2C O hydrochloric acid,…

A: A mixture is a combination of two or more pure substances in which each pure substance retain its…

Q: ultiply or divide the following measurements. Be sure each answer you enter contains the correct…

A: In different mathematical operations like addition, subtraction, multiplication and division, the…

Q: calculate the volume in cm3 of 1,555,738,322 ng of manganese. the density of manganese is 7.20 g/cm3

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Q: Convert 1.71×10−6 g to ng

A: It is required to convert 1.71 x 10-6 g to ng (nano-grams), which can be cone as,

Q: A major component of gasoline is octane (C&H₁8). When octane is burned in air, it chemically reacts…

A: Writing the balanced chemical equation,C8H18 + O2 → CO2 + H2OBalancing the above equation,2C8H18 +…

Q: Convert 16.5 grams NaCl to quantity of NaCl.     5.62 x 10-25 NaCl     58.44 NaCl     0.282…

A: Given amount of NaCl is 16.5grams. How many number of moles and how many molecules of NaCl are…

Q: The source of bitterness in dark chocolate is the compound theobromine, an alkaloid present in cocoa…

A: The number of molecules of theobromine present in the sample = 6.58 × 10206.58 × 1020 molecules…

Q: A solution is prepared by dissolving 21.0 gg of NaOHNaOH in 130.0 gg of water. The NaOHNaOH solution…

A:

Q: Multiply or divide the following measurements. Be sure each answer you enter contains the correct…

A: Least number of significant digit used in question will be considered also in answer. So,

Q: Liquid octane (CH3(CH,) CH,) will react with gaseous oxygen (0,) to produce gaseous carbon dioxide…

A:

Q: Multiply or divide the following measurements. Be sure each answer you enter contains the correct…

A:

Q: Multiply or divide the following measurements. Be sure each answer you enter contains the correct…

A: 1. Answer :---- Given:Concentration = 2.094 mol/LVolume = 2.80 LMultiplying the concentration and…

Q: An engineer wants to galvanize (to prevent corrosion) a 200 ft x 150 ft mild steel sheet with zinc.…

A: Given data:Dimensions of the steel sheet that is to galvanized with zinc-Length = 200 ft ,  Breadth…

Q: The solubility of benzic acid in water at room temperature is 0.38 g per 100 ml of water. If 4.62 g…

A: When benzoic acid is dissolved in 100 ml of hot water (assume all the benzoic acid dissolves) and…

Q: A chemist weighed out 73.5 g of barium. Calculate the number of moles of barium she weighed out.…

A:

Q: Three metal objects have the following masses: 7.119 mg 2.12 g 245.2 g How should you report the…

A: -> Addition and subtraction is possible when all numbers are in same unit.-> In addition and…

Q: IV (intravenous) solutions are mixtures of sugars, salts and other aqueous solutes fed directly to a…

A: We have given that  Concentration of glucose = 5% by mass   Given that : density of Solution : 1g/mL…

Q: You wish to prepare 222 grams of 21.2 % Ca(CH3CO0)2. You will need grams of calcium acetate and mL…

A:

Q: Express the result of each mathematical operation to the proper number of significant figures and…

A: a) The calculation is as follows: In the starting numbers, the minimum number of the significant…

Q: An alcoholic drink contains 44% alcohol by volume. Calculate the volume in ml of alcohol present in…

A: Volume by volume percent (V/V %): It is calculated as the volume of solute divided by the volume of…

Q: 6.6 x 1021 tons = ? ng

A: 1 ton = 907.185 kg1 kg = 1000 g1 g = 109 ng

Q: aqueous solutes fed directly to a patient's veins. If an IV solution is 5.0% glucose by mass, how…

A: % by mass is a concentration term which is used to prepare solution of different concentration. The…

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.