Which of the following is NOT a postulate of the kinetic molecular theory of matter?

Q: During the grade 10 camping trip. You have 10kg of wood to burn at the campfire and at the end of…

A: a) This describes the reaction of burning of wood ,which is a chemical reaction in which wood in the…

Q: What are replicates in Analytical Chemistry? O The component of a sample that repeats over different…

A: Analytical chemistry is the repeated analysis of a single sample and is a measures of the greatest…

Q: Part C How many Rh atoms would have to be placed side by side to span a distance of 7.5 µm ? Express…

A: Atom is the smallest  unit of ordinary matter which forms a chemical  element.

Q: 18. A silver wire has a diameter of 0.500 mm. What length of this wire contains exactly 1.00 mol of…

A: given, the diameter of silver wire = 0.500mm = 0.05 cm number of mole of silver = 1mol density of Ag…

Q: a) What is the mass of the original sample? b) What is the mass of NaCI in the sample? c) What is…

A: Mixture is material made up of two or more substances. separation of mixture is process in which the…

Q: preted by a chemical ra(n) _compound always combine in proportions. A(n) mixture is made of two or…

A: The solution of the given problem is as given below:

Q: “White gold” contains gold and a “white” metal, such as palladium. Two samples of white gold differ…

A: SOLUTION: Step 1: Most of the matter consists of mixtures of different substances. Each substance in…

Q: 16) A 0.0758-g tungsten filament 17) A 1.50-g silver coin 18) A 60.0 g sample of FeCl3

A: Given that : We have to calculate the number of moles contained in each of the following samples :…

Q: Use the information and models to answer the following questiön. A group of students are trying to…

A: Electrical conductive material are those which can transfer charge from one end to other end.

Q: Which accurately show the law of conservation of matter (mass)? A) when 2 oxygen molecules…

A: There is a mistake in the question. The mass of clay should be 12 gm before cutting it into two. I'm…

Q: 1. Fill in the following table for the classification of matter: Anything that occupies space and…

A: The solution of above question is-

Q: neutralization, the products are   A. sodium chloride   B. salt and water   C. a nonmetal…

A: Neutralization reaction It is a reaction between an acid and a base

Q: You are given a hammer a battery, a bulb, wires and switch(a) How could you use them to distinguish…

A:

Q: About Sampling, tick only the incorrect alternative(s). Choose one or more: A) Identifying the…

A: Analysis are of two types: qualitative analysis and quantitative analysis. Qualitative analysis…

Q: in her pocket for a few hours. When she took out the chocolate bar to eat it, the bar was was no…

A: Given, examine the state of the chocolate bar in the morning and then in the evening.

Q: In Express your answer as an integer. N=                              Electrons    Ca Express your…

A: In Neutral atom, number of electrons are always equivalent to atomic number of that atom.

Q: substances have a definite and unchanging chemical composition. Examples of substances are salt,…

A: Substance have a definite and unchanging chemical composition. Examples of substances are salt,…

Q: A ?? BnO B ?? „NMe2 ?? MeO OMe HO

A: Organic transformations.

Q: . Using the measured circumference (c= 21.3 cm) of the glass ornament, calculate the radius in cm.…

A: We have to find How many silver atoms thick is the lining?  Given radius of a silver atom is 160 pm

Q: 1. What are the two figure all about?? 2. What chemical symbols do you see in both figures?? 3.…

A: It is given that two figures A and B are drawn for a molecule,

Q: A pure substance A is found to change upon heating into two new pure substances B and C. Substance…

A: A pure substance A is found to change upon heating into two new pure substances B and C. Substance…

Q: . The electrolysis of water into hydrogen and oxygen is an example of ______ reaction. A.…

A: The electrolysis of water into hydrogen and oxygen is an example of decomposition reaction so…

Q: 17. Aiphonse Bertillon (1853-1914) devised the first sei- entific system of using a series of body…

A: 17) Alphonse Bertillon (1853-1914) devised the first scientific system of anthropometric using a…

Q: The planet Zoltan is located in a solar system in the Andromeda galaxy. On Zoltan, the standard unit…

A: We need to consider the units used on the planet Zoltan.

Q: 1. A student measured a 6.790 g sample of a hydrated salt. After heating, the mass of anhydrous salt…

A: a. Given that weight of hydrated salt is 6.790 g and mass of anhydrous salt is found to be 4.501 g.…

Q: Part F In volcano vents, sulfur is converted directly from the emitted hot gases to form mounds of…

A: Deposition involves the conversion of gases directly into solids without passing through the liquid…

Q: How will you explain the differences in the motion of particles in the different phases of matter?

A: Matter is defined as a substance which occupies space and has weight. For example - Table, milk

Q: (a) What percentage of the electrons originally in the cube was removed? % (b) By what percentage…

A:

Q: Explain this statement in your own words and give an example. The properties of the substances…

A: Water molecule, H2O is composed of two hydrogen and one oxygen atom. The specific geometrical…

Q: Which hypothesis describes the behavior of molecules when a substance changes from a gas to a…

A: When a solid substance is heated then it transfers to its liquid state. If the liquid state is…

Q: What is Heterogeneous substance? Give an example?

A: A mixture is a material made up of two or more different substances which are not chemically…

Q: In a lab experiment, 8.21g of phosphorus reacts with bromine to form 71.75 g of phosphorus…

A: 2P            +                     3Br2                         ====>…

Q: Zinc ore (rock) is treated with sulfuric acid producing a solution with undissolved zinc ore and…

A: Density of H2SO4 = 1.153 g/mL Volume of H2SO4 = 50.0 ml  mass of H2SO4 =  Volume x density = 50.0 ml…

Q: Mass of watch glass, filter., and CaCO3 13.57 g Mass of watch glass and filter Mass of CaC03 12.43 g…

A:

Q: An unknown sample was found to contain the following: 10.62% H 42.04% O 47.34% C Use this…

A:

Q: Mass of one a mu) Carbon Type 1                                12.0 Carbon Type 2…

A: The sum of all the values of individual masses divided by the total number of items in the sample is…

Q: What observations did Antoine Lavoisier make? What law did he formulate?

A: Antoine Lavoisier make an observation that in a chemical reaction matter is neither created    nor…

Q: Rearrange these terms to solve for mass (m).

A:

Q: Analyses of several samples of a material containing only iron and oxygen gave the following…

A: Calculate the number of moles of Fe and O in each sample. This can be done by dividing mass of each…

Q: Why are the chemical elements important in the Big history story?

A: A chemical element, also called an element, is anything that can decompose into simple substances…

Q: Nitrogen makes up what fraction of the mass of the hum Body? Nitrogen makes up what percentage of…

A: 1.Fraction of Nitrogen in mass of human body  70 kg  of Nitrogen is 1 fraction   2.2 Kg   of…

Q: is a pure substance that is made of only one kind of atom. The symbol for an contains two letters,…

A: The above concepts can be filled by using terms such as element, mixtures, compounds, alloy,…

Q: The mass of ten paper clips was found to be 10.135 g. What is the average mass of a paper clip in…

A: Average or mean is the way to get the central value of any experimental data. It is one of the most…

Q: In simple terms, what is the difference between a theory and a law

A: Theory and laws are interrelated . Law  According to science , law is generalised statement  based…

Q: #1 #2 Use the pictures above to answer questions 12 & 13. #3 12 Which picture or pictures best show…

A: Given:

Q: Part 2: Dehydration of a hydrate salt 5. 6. Explain why a change in the mass of the chemical…

A: 5) Hydrated salts are the salts that have a presence of the water of the crystallisation in their…

Q: Your actual experimental percent of copper is probably different from the theoretical value. Assume…

A: The concentration of a substance provides information about the quantity of the substance present in…

Q: Why are the changes of state (e.g., boiling) not a chemical reaction A. Changes of state create new…

A: b

Q: blanks in the statements below: o A mixture of sodium chloride and ammonium chloride can be…

A: The question is based on the concept of separation techniques. There are various techniques used in…

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.