When 10.0 g of ice melts into water, how many grams of water are produced?

Q: A chemist measures the amount of nitrogen gas produced during an experiment. She finds that 852. g…

A: Mole: It is defined as the ratio of the mass of the given compound to the molar mass of that…

Q: Acetylene (C₂H₂) gas is often used in welding torches because of the very high heat produced when it…

A: Answer: This question is based on the stoichiometry of combustion reaction of acetylene where it is…

Q: What are signifi cant fi gures and how are they used in calculations?

A: Number is a mathematical entity which is used to count, label and measure. The examples of natural…

Q: The energy of particles in a gas *

A: 1. Volume and shape not fixed  2. Gas particles are arranged in large space , hence gas can…

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: 10) In a round-bottom flask, a chemist completely reacts 4g of hydrogen with 25g of chlorine. What…

A: Mass of hydrogen = 4 g Mass of chlorine = 25 g Total mass of the compounds = 29g

Q: what happened to the mass of the substances as they burned?

A: The law of conservation of mass states that mass of the matter can neither be created nor be…

Q: Acetylene (C,H, gas is often used in welding torches because of the very high heat produced when it…

A: The balanced equation for the reaction of Acetylene and Oxygen is given below  2C2H2 + 5O2 -->…

Q: A cheap reliable fertilizer, NH4NO3, adds nitrogen to the soil. If you add 48.5g of fertilizer to…

A: In order to find the amount of nitogen added to the soil we first write down the given data: Mass of…

Q: The chemical formula for strontium sulfide is SrS. A chemist measured the amount of strontium…

A: Mass of SrS = 6.7  g  Number of moles of SrS = ?

Q: A certain sample of coal contains 1.60 percent sulfur by mass. When the coal is burned, the sulfur…

A:

Q: ne reaction that occurs during the deployment of an air bag is shown below, where sodium metal…

A: It is given by the law of conservation of mass- total mass in chemical reaction neither be created…

Q: Consider the following unbalanced chemical reaction: CH4 + Cl2 → CHCl3 + HCl If 25.9 grams of…

A: Given  Mass of CH4     = 25.9 gram mass of Cl2       = 89.3 gram  mass of CHCl3   =  ?

Q: a combustion reaction, 33.5 g of hydrocarbon reacts with 96.0 g of oxygen to produce water and…

A: The process in which an organic substance like a hydrocarbon reacts with oxygen from air to give out…

Q: Suppose 12 g of natural gas combines with 48 g of oxygen in a flame. The chemical change produces 33…

A: Given, Mass of natural product = 12 g Mass of oxygen = 48 g Mass of carbon dioxide = 33 g

Q: Given the balanced chemical reaction below for the combustion of propane (C3H8)   C3H8 (g) + 5 O2…

A: Combustion reaction takes place when there is reaction among the substance and the oxygen from the…

Q: The burning of 4.13 g of carbon in oxygen produces 24.22 g of carbon dioxide as the only product.…

A:

Q: how many grams of chlorine are created when 56 grams of sodium chloride decomposes?

A: Decomposition reaction of sodium chloride produces sodium metal and Chlorine gas.

Q: 6. Calculate The scientist repeats the experiment, burning a new sample of steel wool until it is…

A:

Q: C. Naphthalene, C1,Hg, the chemical used in mothballs, can be isolated from the naphtha fraction of…

A: Since the whole mass contain 10 molecules of naphthalene. In solid state they are stick together and…

Q: How many grams with D produce ?

A: Given :-  Mass of A = 21 g  Mass of B = 28 g  Mass of C =19 g  To calculate :-  Mass of D

Q: An ice freezer behind a restaurant has a freon leak, releasing 43.31 g of C2H2F3Cl into the air…

A:

Q: Liquid heptane, CH, burns in oxygen gas to yield carbon dioxide and water What mass of carbon…

A:

Q: If you spend 1 billion dollars per day, how many years would it take you to spend a mole of dollars?

A: Since 1 mole of dollars will have dollars given by  number of dollars = moles X Avogadro's number…

Q: Acetylene (C,H,) gas is often used in welding torches because of the very high heat produced when it…

A:

Q: If each of the 100 million automobiles contains 1.3 kg of CFC−12 and leaks 29 % of its CFC−12 into…

A: Given : Mass of CFC-12 in each automobile = 1.3 Kg Mass percent of CFC-12 that leaked per year = 29…

Q: When butane is combusted, it reacts with oxygen in the air and forms carbon dioxide and water. If…

A: Law of conservation of mass states that , mass can neither be created nor destroyed in a chemical…

Q: A chemist measures the amount of chlorine gas produced during an experiment. She finds that 1.35 g…

A: Calculating number of moles:

Q: 6 grams of nitrogen reacts with how many grams of hydrogen to produce 21 grams of ammonia?

A: Given : Mass of nitrogen i.e N2 reacting = 6 g. And mass of ammonia i.e NH3 produced = 21 g. Molar…

Q: Zinc metal reacts with yellow crystals of sulfur in a fiery reaction to produce a white powder of…

A:

Q: A chemist measures the amount of nitrogen gas produced during an experiment. She finds that 27.7 g…

A:

Q: 4. When 10.0g of ice melts into water, how many grams of water are produced? S Scanned with…

A: Mass of a substance always remains constant during phase transfer.

Q: If 11.2 g of hydrogen reacts completely with 86.8 g of oxygen to form hydrogen peroxide, what is the…

A: The law of conservation of mass states that the mass can neither be created nor be destroyed. Hence,…

Q: Under certain conditions, the substances iron and oxygen combine to form iron(II) oxide. If 31.5…

A:

Q: How many pounds of beans are in a can that contains 418 g ?

A: Given can contains 418 g of beans. 1 gram = 0.00220462 pound.

Q: Liquid octane (CH, (CH. reacts with gaseous oxygen gas (0,) to produce gaseous carbon dioxide (CO,)…

A: We are given combustion reaction of liquid octane. Mass of H2O formed = 3.26g Mass of octane reacted…

Q: Two samples of potassium iodide are decomposed into their constituent elements. The first sample…

A:

Q: 5) A student measures 10.5 mL of diethyl ether using a glass syringe. Given that the density of…

A: The question is based on the concept of physical chemistry. We have to calculate moles of ether…

Q: A chemist combines 6 grams of hydrogen with 52 grams of oxygen in an explosive reaction that forms…

A:

Q: Under certain conditions, the substances iron and oxygen combine to form iron(III) oxide. If 23.6…

A: Limiting reactant :- A reactant which is present in lesser number of moles than required as per…

Q: Antoine Lavoisier found that mass was conserved in chemical reactions when he saw that

A: Otpion C is correct.

Q: A major component of gasoline is octane (CH18). When octane is burned in air, it chemically reacts…

A:

Q: When 20 grams of water decomposes, 1 gram of hydrogen forms. How many grams of oxygen form?

A: H2O= H2+1/2O2  From reaction we can say 1mole H2O give 1/2mole O2  So first convert mass into mole…

Q: Acetylene (C,H, gas is often used in welding torches because of the very high heat produced when it…

A:

Q: Solid iron reacts with diatomic oxygen gas to produce iron (III) oxide. If 15 grams of iron reacts…

A: given data  solid iron = 15 gm diatomic oxygen =45 gm find mass of Fe3O4

Q: If one gallon of gasoline is burned how many grams of water is produced?

A:

Q: How many Liters of H2 are made from 12 grams of Al?

A: Mass of Al = 12 g Volume of H2 produced =?

Q: If the temperature of a sample of water requires 3.2 kJ of heat to raise the temperature from 26.1°C…

A: q = mc∆T  q is the amount of heat energy absorbed m is the mass of substance  c is the specific heat…

Q: When natural gas reacts with oxygen, the products formed are carbon dioxide and water. If 32 g of…

A: According to mass conservation law  Mass can neither by created nor destroyed it can only be…

Q: This question is from my chemistry book. Note- room temperature water is 20oC A thermos having 600…

A: Given: Amount of water = 600 g Amount of ice = 90 g

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.