Write the formula for the ionic compound formed from each pair of elements. a. calcium and sulfur b. aluminum and bromine c. lithium and iodine d. nickel and chlorine e. sodium and selenium

Q: Question 3

A: In the compound KrF2, 2 moles of F are present.The molar mass of KrF2 is 121.8g/mol.  Molar mass of…

Q: Write the formula based on the name, or the name based on the formula, for each hydrocarbon. a.…

A: Introduction: The different ways to represent compounds are: Molecular formula: Molecular formula…

Q: 4. What is a chemical formula? List some examples

A: Introduction: Introduction: Compounds are formed by the combination of two or more elements in a…

Q: РСС, THF 1) NaH Na,Cr,O, 2)CH3CH2CH2BT OH H;0", THF, 25°C PB13 POC13, pyridine, 0°C

A: Cyclopentane contains a ring of five carbon atoms and which group that is alcoholic functional…

Q: In a lab experiment, 7.64 g of phosphorus reacts with bromine to form 66.77 g of phosphorus…

A: law of constant composition:-  a chemical compound always contains its constituent elements in fixed…

Q: What is the importance of making molecular models

A: Sub-atomic models are the actual models used to address particles in space. It addresses atoms in an…

Q: The illustration on the left represents a mixture of nitrogen molecules (N2, blue) and hydrogen…

A: Dalton's theory as applied to law of conservation of mass states that mass/atoms can neither be…

Q: Explain how molecular and structural formulas symbolize the composition of compounds

A: Chemical substances written in the form of symbol and formulas of their elements is known as…

Q: OH O a. NaOH O b. Ag20, H20, NH40H O c. BrH4 Od. Croз, HC, ругidine e. Cro3. Н20, Н2S04 Of. NABH4 g.…

A: NaBH4  is the best reducing agent for this reaction.

Q: Which of the following are ionic compounds? a) calcium carbonate b) SO3 c) CoCl3 d) PCl3…

A: Ionic compounds are formed by the complete transfer of electrons from one metal atom to the other…

Q: What is the difference between an alkane, an alkene, and an alkyne?

A: All the organic compounds which are made up of carbon and hydrogen are called as hydrocarbons. The…

Q: Atomic # 7 Atomic # Atomic # Atomic # Atomic Mass 14 Atomic Mass 12 Atomic Mass_40 Atomic Mass 5e 2e…

A:

Q: Name the compound Pl4. a) phosphorus iodide c) phosphorus(II) iodide b) phosphorus diiodide d)…

A: While writing the name of the ionic compound, the cation is written first followed by the anion.

Q: Me NaNO2, HCI then CuBr, HBr Me 'NH2 Ме CH2B. Br Ме NH2 A BrH2C NH2 В Ме Ме Br Ме NH2 C Me Br D

A: Name of compound is 3,5-Dimethyl aniline which is anaromatic amine compound

Q: Which elements are normally present in organic compounds?

A: SOLUTION: Step 1: Organic compounds are a large class of chemical compounds in which one or more…

Q: DIRECTIONS: Write Tif the statement is correct, and F if the statement is incorrect. 5. The…

A: The true and false statement has to be given,

Q: Calculate the percent mass of each element of a compound NaHSO3 = 23.0 g/mol; H = 1.008 g/mol; S =…

A: Mass percent of each element is defined as the percentage of mass each element is having compared to…

Q: n. C(CH3)3 1. SOCI,, pyr; 2. AICI3; 3. water; 4. HCI, Zn/Hg H3CO

A: In first reaction, SOCl2 converts OH of carboxylic acid into Chlorine atom or it converts carboxylic…

Q: Neutralization reactions involve the hydrogen ions (H+) from an acid, reacting with a base that…

A: Since the reaction between hydrogen ions (H+) and hydroxide ions (OH-) produces water as shown…

Q: Silyt Mg. bi Al t 12=? C. Cucl2 + KOH-2

A: According to the Law of conservation of mass " all atoms of different elements must be equal on both…

Q: Vanadium forms four different oxides in which the percent by mass of vanadium is, respectively, (a)…

A:

Q: What do you notice about the number of each atom in the reactants and of each atom in the products?…

A: Let us consider a balanced chemical reaction:HCl + NaOH → NaCl + H2OIn this above example we can…

Q: 9. Complete the columns in the table: formula: Sno2 P203 H3PO4(ag) calcium hydrogen name: chloric…

A:

Q: 05) Calculate the molecular of potassium permanganate KMNO4. a) 176 amu b)158 c) 110 amu d) 80 amu…

A:

Q: Name the following ionic compounds:  (a) Li2O (b) FeCl3 (c) NaClO

A: Note: As per our guidelines we are supposed to answer first 3 parts. Please repost other 3 parts as…

Q: What is the definition of Chemical formula? And what are the things that we are going learn from it?

A: Chemistry is that branch of science that deals with the properties and behavior of matter.

Q: 31. Write the formula for the compound formed when these elements are reacted a. Al and S b. Mg and…

A: a.) Al2S3  b) Mg3P2  c) Na3N

Q: How many carbon atoms are in 2.65 x 1023 molecules of C,H,?

A:

Q: k) magnesium hydroxide I) hydrofluoric acid m) barium nitrate SCH 3U n) sulfate ion o) ammonium…

A: The formula for above compounds given as follows

Q: O Cs20 > SnO2 > MgO > P4010 > Cl207 O C,0, > P4010 > SnO2 > Cs20 > MgO O MgO > Cs20 > P4010 > SnO2 >…

A: Applying concept of metalic character and electronegative of central atom.

Q: 81.073 amu is the molecular mass of chloroform(CHCI3) hexane(CH14) tetra methyl silane(Si(CH3)4)…

A: Mass of 1mole substance is called molecular mass and it is expressed in amu unit. Molecular mass of…

Q: 1. A compound that consists of metallic and nonmetallic atoms is 2. A compound that composed of two…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: Ca?* and S?- Express your answer as a chemical formula.

A: To form the chemical formula by ions (cation & anion ). We have to make charge balance between…

Q: What amount of CuSO4•5H,O, in moles, does this mass represent? mass = 1.787 g %3D X mol resubmit…

A: Given : Mass of CuSO4.5H2O = 1.787 g And molar mass of CuSO4.5H2O = 249.69 g/mol.

Q: The imaginary element Beesium (Element symbol: Bs) is a group 1A (1) element. Upon reacting with N,…

A: Write name of imaginary inorganic compound --

Q: A 43.0 g sample of hydrated cobalt (II) sulfite is heated resulting in anhydrous cobalt (II) sulfite…

A: We have given that   A 43.0 g sample of hydrated cobalt (II) sulfite is heated resulting in…

Q: What is Brownian motion? How is it related to the development of the idea that matter is…

A: The collision of microscopic particles suspended in either liquid or gas makes the particles travel…

Q: 3.2*10^24 atoms O to molecules O3

A: A molecule is composed of two or more than two atoms. The number of molecule can be determined by…

Q: Balance each reaction and write its reaction quotient, Q꜀:

A:

Q: 1. How many ATOM nitrogen trifluoride atoms c

A: Note: According to our guidelines we are supposed to answer only first question

Q: अ @मांयंपल H is Pa=4.81 Pe=4'05 bak , 6= 4.63ba stendertonange in gibas fee enesy च अंट ? bak, P=451…

A:

Q: Determine Δngasfor each of the following reactions:

A: The value of Δngas = (Sum of number of moles of gaseous products) – (Sum of number of moles of…

Q: Write the empirical formula for the compound formed by(a) Na+ and PO43-, (b) Zn2+ and SO42-, (c)…

A: The empirical formula for the above compound is given below

Q: cat. H2SO, а) H20 (1) ВНз b) (2) Н2О2, NaOн (1) Hg(OAc)2, H2O/THF c) (2) NaBH4, NaОН

A:

Q: Analysis of a 49.5 g sample of water revealed a mass percent for lead of 4.53%.  Calculate the…

A: Mass of water=49.5 gram Mass percent  for lead= 4.53 % Number of grams of lead=?

Q: 1.21 x 1028 atoms of oxygen gas (o,)? 1 mol = 6.02 x %3D F7 FB F9 F10 F11 F12

A: Number of Molecules of O2 gas = ( Number of atoms of O2 gas / 2 )  Number of Molecules of O2 gas = (…

Q: Tw , N b. Ammonia, NH3 Sunt un tavise, c. Sulfur difluoride, SF2

A:

Q: Calculate the mass of 1.00×10241.00×1024 (a septillion) molecules of wate

A: We know that there are two hydrogen atoms and one oxygen atom for every H20 molecule. So, the molar…

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.