Calculate the density of a substance for which 12 ml of the substance has a mass of 12.35 g Express your answer using the correct number of significant figures, and do not enter yOur answer using scientific notation Demity

Q: What is the density of a 789 kg object that is 1.58 m³ in size? number unit

A: Given, Mass the object = 789 kg Volume of the object = 1.58 m3 Density of the object = ?

Q: Liquid hexane (CH; (CH2),CH CH, will react with gaseous oxygen (0,) to produce gaseous carbon…

A:

Q: what is the density of a solid whose mass is 30.57 g if the solid displaces 6.87 mL of water?

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Q: Convert 622 µL to mL (you must convert it back the metric base unit fırst): Show set-up in…

A: Given: Volume = 622 μL

Q: Methane gas and oxygen gas react to form water vapor and carbon dioxide gas. What volume of carbon…

A:

Q: A quantity of water is poured into a graduated cylinder, which then reads 156 mL. What is the mass…

A: Given : volume of water = 156 mL

Q: Calculate the number of moles of carbon dioxide that are present in 192.9 g of carbon dioxide. Enter…

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Q: A chemist determined by measurements that 0.050 moles of iron participated in a chemical reaction.…

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Q: A chemist determines by measurements that 0.0500 moles of oxygen gas participate in a chemical…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: Perform the following calculation and input the answer expressed to the correct number of…

A: Non zero digits are always significant.

Q: Perform the following calculation and input the answer expressed to the correct number of…

A: Perform the following calculation and input the answer expressed to the correct number of…

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

A: The reactant which produces the least amount of product is called limiting reagent and the amount of…

Q: Calculate the following mathematical expression with the correct number of significant figures:…

A: We have to calculate here the given mathematical expression with the correct no. Of significant…

Q: Express the following in scientific notation: 10,030,400,000

A: Given The number to express is 10,030,400,000

Q: what is the total mass of metal present in the container

A: For addition, calculate the significant figures of all the numbers. The sum, will have the least…

Q: A student determined the mass of a sample in a beaker by subtracting the mass of the empty beaker…

A:

Q: Convert 192 grams of phosphorus pentabromide to molecules.

A: Given: Mass of phosphorus pentabromide i.e. PBr5 = 192 g.

Q: Gaseous butane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water.…

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Q: 1)  1892.5 mL (2) Using your result in question (1), determine the mass in grams of 0.50 Gal of ice…

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: Perform the following calculations and express each answer to the correct number of significant…

A: The solution is as follows :

Q: Calculate the tare weight for an object placed in a 10.9114 g container with a total mass of 16.4545…

A: Container that when subtracted from gross weight yields the net weight is regarded as tare weight.…

Q: How many mL of 0.556 molar magnesium chloride must a scientist pour into a beaker to have 17.6 g of…

A:

Q: Hydrogen chloride gas and oxygen react to form water vapor and chlorine gas. What volume of water…

A: we have to calculate the volume of water produced in the reaction

Q: Sulfuric acid solution is the electrolyte used in car batteries. Sulfuric acid is sold as a…

A: we have to calculate the volume of concentrated sulfuric acid solution

Q: A major component of gasoline is octane C8H18 . When liquid octane is burned in air it reacts with…

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Q: Hydrogen gas and nitrogen gas react to form ammonia gas. What volume of ammonia would be produced by…

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Q: An engine has an internal combustion volume of 3.26 liters. What is that volume in cubic inches?…

A: Given  Volume =  3.26 Liter  Volume in the unit of  (Inch )3. = ?

Q: A major component of gasoline is octane (C3H18). When octane is burned in air, it chemically reacts…

A: Given data, the mass of octane=9.8 g, the molar mass of octane=114 g mol-1 mass of oxygen= ? , molar…

Q: (8.71× 0.0301) 0.056

A:

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

A: The chemical reaction between HCl and NaOH is shown here-HCl+NaOH→NaCl+H2OHere moles of HCl…

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

A: Reaction takes place: Octane (C8H18) reacts with oxygen gas (O2) to produce carbon dioxide (CO2) and…

Q: A student determines the density of a liquid by determining the mass of an empty graduated cylinder,…

A: (a) Determine mass of the liquid:

Q: A popular car has an engine that is reported to have a volume of 4320 cm³ . What is the…

A: The given car engine volume in cm3 is expressed in cubic inches as shown below, The unit conversion…

Q: Gaseous ethane (CH,CH,) wili react with gaseous oxygen (o,) to produce gaseous carbon dioxide (co,)…

A: The reaction given is the combustion reaction of ethane which can be written as CH3CH3 (g) + O2 (g)…

Q: A chemist must prepare 650. mL of 1.00 M aqueous sodium chloride (NaCl) working solution. She'll do…

A: Given :-  concentration of stock solution = 1.24 M  concentration of dilute solution = 1.00 M…

Q: You measure the distance between to cities to be 42.0 miles. You need to send this data to Brazil…

A: Convert 42.0 miles to km ?

Q: The mass of a sample is 550 kilograms. Expresses that mass in milligrams? Express your answer in…

A: Convert kilograms to milligram

Q: When adding or subtracting measured quantities, what determines the number of significant figures in…

A: The result of an addition or subtraction should be reported to the same number of decimal places as…

Q: Gaseous methane (CH,) will react with gaseous oxygen (0,) to produce gaseous carbon dioxide (co,)…

A: The reaction taking place is  CH4 + O2 -------> CO2 + H2O  Balancing : Since we have 4 H in LHS.…

Q: Gaseous ethane (CH3CH3)will react with gaseous oxygen (O2) to produce gaseous carbon dioxide (CO2)…

A: We are reacting 14.1g of ethane with 26g of oxygen. We are supposed to calculate the left over mass…

Q: How many significant figures are in the number 0.0009781?

A: Step : 1               Find the significant figures.

Q: A major component of gasoline is octane (CH₂). When liquid octane is burned in air it reacts with…

A: Given :  Moles of water produced = 0.065 mol

Q: a) Fill in the following table (consider 4 decimals and use scientific notation where necessary):…

A: The objective of the question is to fill in the table with the appropriate values of viscosity for…

Q: Calculate the following and express the answer in the proper number of significant figures:…

A: To solve the given question, first solve the numerator and denominator part. Then round off answer…

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.