30. зв 37. 38. N OH Br NH₂ CH₂CH₂CH3 ОН

Q: 3. How many molecules contained in 25.0 H₂? (FW =2)

A: H2 is a molecule which has molar mass= 2 g/mol

Q: A leak in the air conditioning system of an older car releases55 g of CF2Cl2 per month. How much Cl…

A: The given data contains, mass of CF2Cl2 = 55 g.

Q: Calculate mass percent of each element in perchoric acid, HCLO4 ?

A:

Q: Calculate the percent composition for SCl2. mass percent of sulfur = mass percent of chlorine=

A: Mass percent for a particular element is given by  Mass percent of an element = (mass of that…

Q: many molecules were used

A:

Q: 27.) What elemental analysis of a substance shows that it consists of 52.2%C, 34.7%O anf 13%H by…

A: It is a chemical formula that shows the simplest ratio of elements present in compound rather that…

Q: How many moles of fluoride ions are present in 11.5 g of NaF?

A: The molar mass of NaF can be calculated as

Q: A sample of a hydrate of copper(II) sulfate is found to contain 36.08% by mass water. What is the…

A:

Q: In a chemical reaction, 3 moles of hydrogen are reacted with 1 mole of nitrogen. Which of the…

A: Given: Moles of hydrogen gas = 3 mol Moles of nitrogen gas = 1 mol

Q: hich of the following is closest to having exactly one mole of oxygen atoms?   a) 42 g HNO3 b) 32…

A: a. 42 g HNO3 1 mole HNO3 contains = 3 moles of oxygen atoms moles of HNO3 = given mass/molar mass =…

Q: g) 1) xs NH3 2) LiAlH₁ 3) H₂O ?

A: Organic reactions can be defined as the reactions in which organic reactants react with each other…

Q: C3H8 (g) + O2 (g) CO₂ (g) + H₂O (g) If 2.5 moles of O2 is consumed in the reaction, how many gr C)…

A: Number of moles is calculated by dividing the given mass with molecular mass. In the given question,…

Q: Percent composition for P f4O

A: Calculate% composition in PF4O ?

Q: containing carbon, hydrogen, and oxygen produced 0.1450 g of CO₂ and 11) Combustion analyses of…

A:

Q: 8. Which of thollowing could NOT be an empirical formula? CUSO4 5H2O O A2O3 O C2H6 O H;PO4

A: Empirical formula: Empirical formula is defined as the  simplest, positive, whole number ratio of…

Q: 4. A different hydrate of nickel(II) chloride, NiCl2 • XH2O, decomposes to produce 45.5% water.…

A: The formula of given hydrate is NiCl2.XH2O. On the decomposition of hydrate, 45.5% of water is…

Q: name the compounds given

A: Rule of IUPAC-1) Longest chain as parent chain.2) Numbering start from those side where more prior…

Q: Describe the process of Interconverting Masses and Moles?

A: Moles of a substance = given mass of substancemolar mass of substance  Mass of a substance = moles…

Q: HBr (1 mole) НООН

A:

Q: How many moles of SO3 can be formed if 23.6 g of oxygen is consumed? Enter mols for unit.

A: Here we are using unitary method to solve this problem.

Q: What is the empirical formula for this crystalline material? Ba

A:

Q: Synthesis the following reaction: 1 зон + Но

A: The given reaction is shown below We have to carry out the above synthesis.

Q: You are given a 10.0 grams sample of ethanol (CH3CH2OH).   Explain how you can use the molar mass of…

A: The Avogadro’s number of any species is defined by a mole. The Avogadro’s number, NA, is equal to…

Q: Name compound. KClO

A: Potassium hypochlorite (chemical formula KClO) is the potassium salt of hypochlorous acid. It is…

Q: 7. The mass of 2.27 x 10-2 mol of a molecule is 1.0g. Identify the molecule. OC₂H6 Onone of these…

A:

Q: 6.66 x 1024 CH4 molecules mol

A: We are given with molecules of CH4 whose number is 6.66 × 1024 molecules.Number of moles can be…

Q: 1. One drop of water from a medicine dropper has a volume of approximately 0.050 mL (1 mL = 1 cm3)…

A: Given, volume of water in one drop = 0.050 mL = 0.050 cm3            density of water = 1.0 g/cm3…

Q: Classify each chemical compound: compound type of compound H C1O, O molecular ionic Bl3 O ionic O…

A: Ionic compounds are basically defined as being compounds where two or more ions are held next to…

Q: Determine the percent composition of SO42- in Al2(SO4)3

A: We know,  % of mass  = (mass of component/total mass)*100

Q: Which of the following is a molecular compound? A) Ca2SO4 B) CaO C) NaCL D) Ca2O

A: Molecular compounds are the chemical compounds that are composed of only non- metals or semi- metals…

Q: 7. x = 4 atoms 1 mole 6.02 x 1023 atoms 23g 1 mole

A: The conversion of quantity from one unit system to another unit system is known as unit conversion.…

Q: NaCl + Pb(NO3)2 ➞ 2 NaNO3 + PbCl2 How many grams of lead (II) chloride can be formed from 32.5 g…

A:

Q: 3. What physical property of water and HCl allows us to separate them from the zinc chlorine…

A: Solution: We know the solubility principle i.e. likes dissolves like. Since HCl is the strong acid…

Q: 3. Hydrated vanadium (II) sulfate, VSO4-XH2O, is 46.19% water by mass. Determine the empirical…

A: Given  mass percent of water in hydrated salt = 46.19% Atomic mass of V = 50.94 amu Atomic mass of S…

Q: How many moles of water, H2O, are present in 75.0 g of H2O?

A:

Q: A hydrated sample of sodium hydrogen phosphate (Na2HPO4) was found to contain 47.05% water by mass.…

A:

Q: Br 1. Mgº, CH₂CH₂OCH₂CH3 2. CO2 3. HCI, H₂O

A:

Q: How many atoms of each element are in the follwing compounds a. 2CH3OH b. 5PCl5

A:

Q: 1. Methanol, or wood alcohol, is the combustible material used in sterno. Write a balanced equation…

A: The balanced equation for the complete oxidation reaction that occurs when methanol (CH3OH) burns in…

Q: What is the correct formula of a hydrate that contains 24.5% H2O and 75.5% CaCl2, by mass percent?

A: since we know that general formula of hydrate of CaCl2  is CaCl2•xH2O where x is the number of mole…

Q: Determine the percent composition of OXYGEN in C17H19NO3

A: Percentage composition or mass percent of an element in a compound is given by the formula mass…

Q: Classify each chemical compound: compound HCIO4 Pb(OH)4 NiCl₂ type of compound O ionic ionic ionic O…

A: ★ Ionic compound : The compounds which are formed by the complete transfer of electron between the…

Q: An unknown hydrocarbon is subjected to elemental analysis. It is determined to be 85.6% carbon and…

A: Mass % of Carbon = 85.6% Mass % of Hydrogen = 14.4% Empirical formula =?

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.