IDENTIFY THE LAW OF CHEMICAL COMBINATION

Q: Define element and compound.

A: Given terms,       Elements and compounds.

Q: if magnesium sulfate is mixed with water, will it form a homogeneous or heterogeneous solution? Why?

A: Given : We have to tell whether the mixture of magnesium sulfate and water is homogenous or not.

Q: write mixture if it is corresponds with mixture and compound if it is corresponds with compound.…

A: A question based on solutions that is to be accomplished.

Q: Differentiate between Molecules and Molecular Compounds?

A: Differentiate between Molecules and Molecular Compounds

Q: 7) To elements in the gas state react to form a new compound. Based on the state of matter of the…

A: Reactions in which two or more chemical species combine to form an entirely different species is…

Q: A hydrate initially weighs 5.821 grams and is heated. After heating it weighs 3.331 grams. Assuming…

A: •Here given weight of hydrate initially :-             W1 =5.821 gm  •Weight after heating:-…

Q: A chemical change is a change in composition resulting in a product with different properties.…

A: The objective of the question is to verify the definition of a chemical change.

Q: ww How many kinds of chemically non-equivalent carbons are there in each of the following compounds?…

A: 13C NMR spectroscopy is useful to determine types of carbons, signals, splitting etc and hence we…

Q: why is the arrangement of the constituent atoms or molecules more important in determining the…

A: Three state of matter solid , liquid and gas. The arrangement of atoms or molecules in the lattice…

Q: Which mixture can be separated into its components by adding water then filtration? a. Potassium…

A: Given statement is  :  Which mixture can be separated into its components by adding water then…

Q: A physical property is; A) The ability of a sample to undergo change B) A property the sample…

A: We need to give a definition of a physical property based on the fact of change of composition.

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: law of conservation of mass

A: According to law of conservation of mass, in a chemical reaction the mass of reactions are always…

Q: Give an example of a chemical change, and explain what evidence supports that it is a chemical…

A:

Q: 200 g of a silicon compound is decomposed, resulting in 41 g of solid silicon and the remainder of…

A: Calculate the number of moles of both the compounds. nSiClF3 = WSiClF3MSiClF3nSiClF3 =200 g120.5…

Q: Suppose you analyze a 35.4 g sample of bleach and determine that there are 2.26 g of sodium…

A:

Q: What is the difference between baking soda and baking powder?  Refer to chemical content of each…

A: Using basics of general inorganic chemistry.

Q: 1. Describe the color of the mercury(II) oxide.   2. Describe what happens to the mercury(II) oxide…

A: Since third question is different than first two question. Here, we solve first 2 questions as they…

Q: How important is identifying chemicals and Laboratory apparatuses used in an analysis?

A: You should always know your lab equipment well before you do any type of experiment because without…

Q: Within an atom, the positive charge is O concentrated at multiple sites in the atom O spread evenly…

A: At atom can be defined by its protons , electrons and neutrons. Protons are positively charged…

Q: tation and fiitra

A: 9) As we know, water and sand is heterogeneou mixture. So it can be separated by decantation. But…

Q: What is chemical compound and chemical formula? What are the significant concepts about them?

A: Chemical compound is a substance composed of identical molecules consisting of two or more chemical…

Q: Write a balanced molecular equation describing each of the following chemical reactions. You may use…

A: Water vapour is the water in a vapour state, thus the phase of water vapour is gas. Sodium is an…

Q: Suggest how the components of each mixture can be separated. a. Salt and Sulfur b. Copper and Zinc

A: Solution The mixture of salt and sulphur is a mixture of heterogeneous mixture.They can be seperated…

Q: Supposed to magnesium feelings and sulfur or heat it so they react with each other forming magnesium…

A: Concept: The pure substances have constant composition throughout the given substance. The mixed…

Q: hydrochloric acid + magnesium → hydrogen gas + magnesium chloride List two physical / chemical…

A: The question is based on the concept of chemical reactions. we have to write physical and chemical…

Q: Base your answers to questions 78 and 79 on the diagram below concerning the classification of…

A:

Q: When salt is placed on wet or icy Roads, water is the blank and salt is the blank

A: Colligative properties: The colligative properties are those properties of solutions that depend on…

Q: When we need sample preparation for analysis? use your own words to write

A: 1) Preparation is a very important step in most analytical techniques because the techniques are…

Q: A sample of a compound has a mass of 42.66 g with 1.06 x 10-1 mol. What is the molecular mass of the…

A:

Q: Calculate the mass of one bromine atom. a. 6.022 x 1023 g O b.4 812 x 1025g O c. 1.327 × 10-22 g O…

A: Atomic mass is defined as the quantity of matter that is present in an atom of element.

Q: What is a molecular element?

A: A compound refers to the molecule which contains at least two different type of elements bonded…

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: a chemist has 19.50g alcohol. what is the volume of the sample, what additional information is…

A: The volume of a given liquid is defined as the amount of the space occupied by the liquid that fully…

Q: Which of these is NOT true of chemical changes?

A: Substance can change two ways  1. Physical change  2. Chemical change   we should study major…

Q: JJ Thomson is credited with the discovery of

A: J J Thomson, in full Sir Joseph John Thomson, (born December 18, 1856) is English physicist who…

Q: How does increasing the temperature change the physical properties of an object? 0000 DUT a…

A: Increasing the temperature increases the average speed of the reactant molecules.

Q: reactant 1 reactant 2 product 1 product 2 + + chemical reaction: + + appearance of individual…

A: Single displacement reaction: The single displacement reactions are those reactions in which one…

Q: Is it an element, compound, or no such classification is possible because of insufficient…

A: Please find your solution below : An element is a substance that cannot be broken down further…

Q: 3. A vindictive stockroom worker mixes solid silver nitrate with sand. Write a flow chart describing…

A: Silver nitrate dissolves in water and can be recovered by evaporating the water, leaving 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.