elements. (a) He (b) Pb (d) Ne (f) Ga (h) Br (c) Se (e) Cs (g) Sb

Q: What is the difference between a law and a theory?

A: The difference between a law and a theory has to be given.

Q: A blanket of air, made up of gases, liquids, and some solid matter, is called the

A: Atmosphere is the blanket of air around the earth which is beneficial for human being. Gases…

Q: Which one of the following statements is FALSE?

A: Thermodynamics: It is a branch of physical chemistry which deals about various forms of energies…

Q: Suppose that instead of using the cylindrical rod of Example 1-2 to prepare a 1.000 kgmass we were…

A: The volume of a spherical ball will be directly proportional to the cube of the radius of the…

Q: What type of metal is this? Aluminum, Copper, Lead or Iron?

A: Specific heat of metal in cal/g˚C is 0.220 Specific heat of metal in J/g˚C is 0.920.

Q: A volatile liquid (one that easily evaporates) is put into a jar, and the jar is then sealed. Does…

A: Law of conservation of mass: According to the law of conservation of mass, for a closed system to…

Q: is carbon dioxide classified as an element?

A: Given name is Carbon dioxide  We need to explain can cabon dioxide be classified as an element or…

Q: 2. What is matter composed of?

A: To find: What is matter composed of

Q: Arrange the values to the magnitude. Which one is the greatest to the least?

A: Given :- values are :  1.4 × 105  51000  3.5 × 10-2  9.0 × 10-6  7.9 × 10-6  To arrange :- the…

Q: The single proton that forms the nucleus of the hydrogen atom hasa radius of approximately 1.0 *…

A: Solution- when 1 m = 100 cm   and 1 m = 1012 pm   now, proton radius =1.0×10-13cm…

Q: Write the symbol for one atom of zinc, magnesium, iron, and copper

A: Symbol for one atom of zinc is - Zn Symbol for one atom of magnesium is - Mg

Q: Which of the following statements is FALSE?

A: at equilibrium rate of forword reaction is equal to rate of backword reaction  For a reversible…

Q: All of the following are characteristics of metals except.

A: Malleable means they are hammered into thin sheets. Ductility means they can be drawn into thin…

Q: Which of the following is a solid metal under normal conditions: calcium, phosphorus, mercury, or…

A:

Q: ahswer the questions[ 1A 8A ЗА C 1 3 W Zy 4A 5A 6A 7A G 4. 7 V Ad 8. 10 11 12 13 14 15 Q U Ac Ab Ах…

A: We are given the following balanced chemical reaction, 3J2   +   4R      ------------->   2J3R2…

Q: How can we say that sugar is solid and water is liquid?

A: There are three states of matter: Solid: It has fixed volume and fixed shape. It can not be…

Q: a) Define physical properties?. Give 3 examples. b) What is the geeral application of chemical and…

A: Physical properties :  A physical property is any property that is measurable, whose value describes…

Q: According to the Greek philosopher Aristotle in 350 B.C., what five basic elements composed…

A: According to Aristotle, the Greek philosopher the five different basic elements that composed…

Q: f Chlorine is

A:

Q: A. North America B. Europe and Eurasia C. Africa D. Asia Pacific

A: Graph is given of the consumption of coal which is the cleanest place to live in terms of quality.

Q: Describe what is meant by an extensive property and givean example.

A: A property of a matter is any feature of that matter that can be measured by direct or indirect…

Q: What type of change in matter is characterized as having a new substance formed in the process?

A: Given  New substance is formed in the process  Type of Change = ?

Q: oxygen is not combustible is that a physical or chemical property?

A: Physical property is the property in which color, melting point, solubility, and state of the…

Q: A volatile liquid (one that readily evaporates) is put into a jar, and the jar is then sealed. Does…

A: To study the nature of volatile liquid when placed in a closed system

Q: In essay form asnwer the question As a college student why is it important to study general…

A: It is important to study general chemistry.

Q: What is the mass of 4.00 cm^3 of sodium, with a density of 0.97 g/cm^3?

A: MATHEMATICAL TREATMENT OF MEASUREMENT RESULTS Learning Objectives By the end of this section, you…

Q: Which is a pure element? * Nacl

A: The pure elements are composed of a single type of elements and thus they are classified as pure.…

Q: What is wrong with the expression “That is just a theory,” if by theory the speaker is referring to…

A: To determine: The error in the expression “This is just a theory” if by the theory the speaker is…

Q: Musical instruments like trumpets and trombones are madefrom an alloy called brass. Brass is…

A: Homogeneous mixtures are those mixtures in which composition is uniform throughout the mixture.…

Q: which is an example of a mixture

A: Mixtures are the combination of two or more substances and they are not chemically combined.

Q: Which of the following is an element: Brass Zinc Steel             D, Bronze

A: An element is the simplest form of pure substance. On the other hand, a mixture is made up of…

Q: Distinguish between elements and compounds.

A: Elements can be described as the simplest form of the pure substance which can not be broken down…

Q: 2-86 When each of the following measurements are length is convert to inches, using a conversion…

A: The conversion factor used in the unit conversion has infinite number of significant digits. In the…

Q: Which is considered an elemental substance? A.CO (carbon monoxide) B.H2O (water) C.I2 (iodine) D.A…

A: Given,CO (carbon monoxide)H2O (water)I2 (iodine)A and C are elemental substances.All of the above…

Q: What is the all chemical properties

A: Characteristics which helps us to differentiate one substance from another are known as properties.…

Q: Which of the following is not made of chemicals?

A: a chemicals are compounds or element made up of atoms or molecule so they have both mass and occupy…

Q: The symbol of K+ represents one?

A: + sign indicates loss of electrons.

Q: 6. Which of the following can be separated by decantation? O A. water and rice B. water and pebbles…

A: Decantation : It is the process of seperation of mixture of Immiscible liquids or of a liquid and…

Q: Physical and Chemical Properties

A: As we know, density, evaporation rate, flash point,pH are physical and chemical properties of…

Q: , which among GaAs, LiBr, C, and Li will be the greatest conductor

A: Substance which has more number of ions have more electrical conductivity.  So, strong electrolytes…

Q: Which of the following is an example of a chemical property?

A: Chemical change: When a compound combines with another compound to form a new product is known as…

Q: Identify the following statements as true or false.

A: Statement 1- A 2.0 % NaCl solution has a higher vapor pressure than pure water. when a non-volatile…