Convert the following percentages to proportions: 74.9%, .2%, 5.1%.

Q: A sample of C,H, has 7.20 x 1024 H atoms. How many carbon atoms does the sample contain? number of…

A: Given : The compound is C3H8. And number of H atoms in compound = 7.20 X 1024 atoms. The number of…

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: A sample of methane, CH4 , has a mass of 77.00g. Calculate the number of methane molecules in the…

A: Mole concept: According to the mole concept, the number of methane molecules in one mole of methane…

Q: KCI (CI is chlorine) Nal MgCl₂ (Cl is chlorine) Lil

A: Lattice energy is energy released to form 1 mole  compound from its constitutent ions. Higher the…

Q: What about the percent N in the ammonia ion NH4+?

A: Ionic weight of ammonium ion, NH4+ is 18.04 amu.

Q: Which sample contains the greatest number of atoms? 54.7 g V 51.2 g Mn 203 g Bi

A: To find number of atom we have to calculate number of moles first. Moles= given mass/molar mass…

Q: Solve the attached Problem.

A: The Reaction of carbonyl compound with Grignard reagent gives alcohol which undergoes to dehydration…

Q: How many Oxygen are in 6.913x10^23 molecules of nitroglycerin C3H5N3O9?

A: Given question is checking our mole concept principal. In this question, number of molecules of…

Q: Tia has a sample of pure gold (Au). She weighed the sample and the result was 96.896.8 grams. Tia…

A: Formula used: Moles = Mass/ Molar Mass Number of atoms = Moles x Avagadro Number

Q: what is the mass of 1.08x10^22 molecules of SF6? pls, show how you got it.

A:

Q: Complete the table below.

A: Since you are asked for multiple elements, we are entitled to solve first three for you.

Q: 7 O+Y 8 ¿+Ngi ← OSŤ 150 8 +0g + H+¿

A: Nuclear reaction: The given reaction is a nuclear reaction. In the nuclear reaction, one nuclide is…

Q: How many total atoms, elements, and molecules are in 8K2SO4?

A: The molecular formula of the molecule is K2SO4. The number of K2SO4 molecule is eight 8K2SO4.

Q: The mass of 5.20 moles of glucose, C6H12O6 is   1.56 × 10‑21 g   31.2 g…

A: Given, Moles of glucose (C6H12O6) = 5.20 mol Mass of glucose (C6H12O6) = ? Note; Molar mass of…

Q: Find the mass of 1 molecule of NO in gram. а. 4.98 х1023 b. 30 C. 4.98 x10-23 d. 15

A: According to mole concept, mass of Avogadro number (6.022 × 1023) of molecules is equal to the molar…

Q: A sample of C,H, has 9.28 x 1024 H atoms. How many carbon atoms does the sample contain? number of…

A: The amount of substance is usually defined in terms of mole. The mole is the SI unit of the quantity…

Q: What percentage of atoms in the molecule represented in the following formula are nonmetals?…

A: % of non-metal atoms = 100 x number of non-metal atoms/total number of atoms

Q: CIO,- :0: ö=c=ö :0: :ö: 3=c=ö :ö: :0: :0: :ö: 1 :0: :0: :O:

A: The anion given is a hyper chloric ion, when a proton is removed from the hyper chloric acid we get…

Q: In the following How many total atoms of Ca How many total atoms of P How many total atoms of O How…

A: The fundamental building blocks of matter are referred to as atoms. Protons, electrons, and neutrons…

Q: How many water molecules are in 6.00 raindrops? Assume that there are 20.0 raindrops in 1.00 mL of…

A: Density is defined as: It is the ratio of mass per unit volume 1 mole of any chemical species…

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

A:

Q: Complete the table below

A: Since you have posted multiple parts, the answer for first three parts are given below. Kindly…

Q: This number of particles is called Avogadro's number (NA) and has a value of... 6.02 x 10 – 23 0.602…

A:

Q: 2. Calculate the mass of each of the following: a. 20.0 mL of nitrogen gas b. 7.0 L of hydrogen gas…

A: One mole of any gas at STP occupies 22400 ml of volume. It is called molar volume.

Q: Na,CO3(aq) + CaCl2(aq) → 2 NaCI(aq) + CaCO3(s)

A:

Q: 5. The term mole is a unit used to represent (1) density of particles (2) an element or compound's…

A:

Q: NO₂ 1. Sn, HCI 2. NaNO2, HCI, 0%℃ 3. CUCN 4. H₂O*, A 5. a) SOCI2, b) NH₂CH3

A:

Q: Draw the products of each reaction.

A: The sodium ethoxide (NaOEt) is an base which will abstract the most acidic proton and generates a…

Q: A sample of C,H, has 9.28 x 1024 H atoms. How many carbon atoms does the sample contain? number of…

A: Interpretation-  To determine the carbon atom in the give molecule C3H8 - To determine the total…

Q: What is a mole? How is the mole concept useful in chemical calculations?

A: Mole Mole is a quantity that represents a collection of 6.022×1023 atoms or molecules. The term…

Q: Find the mass of 1 molecule of NH; in gram. a. 10 O b. 2.82 x1023 O c. 2.82 x10-23 O d. 17

A: According to the mole concept, one mole of any substance related as - (1) 1 mole of the Substance =…

Q: One millimeter of water contains about 20 drops. One gram of water contains 3.34x10^22 molecules of…

A: One millilitre of water contains about 20 drops. One gram of water contains 3.34×1022 molecules of…

Q: 42.161 * 1223 molecules of salt + 18.066 × 1023 molecules of sugar

A: 42.161 * 1223 molecules of salt + 18.066 × 1023 molecules of sugar  first we will convert molecules…

Q: 2. Translate the following chemical equations into sentences: a. CS2 (1) + 302 (g) → CO2(g) + 2 SO2…

A: Since you have posted a question with multiple parts, we can solve only first three parts for you.…

Q: Convert each to mass in grams. a. 4.22 x 10 atoms U b. 8.65 x 10 atoms H c. 1.25 x 10 atoms O d.…

A: Note: As the question consists of multiple parts, we are solving the first four, and please post the…

Q: 1. Determine the number of atoms in 0.475 g of palladium (Pd). atoms 2. Determine the mass of 139…

A: One mole of any element contains approximately 6.022 x 1023 atoms of that element. Therefore, to…

Q: A mole in chemistry is: a. a counting unit of 6.02 x 10²³ grams. b. a counting unit of 6.02 x 10²³…

A: We know that ,                    1 Mole = 6.023 x 10^23 atoms…

Q: a. CH3 1. NaCN, THF 2. NaSCH3, THF

A:

Q: LU 202I 3. Determine the number of molecules (or atoms) in each of the following. a. 2.56 grams Cu…

A: Given : mass of different molecules  To find : number of each molecules Solution : As we know that,…

Q: e mass of 1.20 x 1024 molecules of CH4 is

A:

Q: Determine the number of atoms in 27.0 grams of bromine, Br. (The mass of one mole of bromine is…

A: Given : mass of 1 mole of bromine i.e Br = 79.90 g And mass of Br = 27.0 g

Q: A 1.58 mole sample of a pure unknown substance has a density of 1.87 g/cm3. If the sample occupies a…

A: Given,Density = 1.87 g/cm3Volume = 188 cm3Mole = 1.58 mole

Q: Find the mass of 1 molecule of NH3 in gram. a. 2.82 x1023 b. 17 C. 10 d. 2.82 x1023

A: We know that 1 mol of any substance contains Avogadro's number of molecules or atoms i.e 6.023 ×…

Q: How many moles of aluminum do 5.80×1024 aluminum atoms represent? Express your answer using three…

A: Number of Aluminum atom = 5.80 × 1024

Q: 1. Mg(0), THF 2. O. iPr Br iPr 3. HBr (conc) MeO

A: Given reaction,

Q: examples

A: Carbon based nanomaterials such as fullerene, carbon fibers, carbon nanotubes, nanodiamonds are…

Q: How many molecules is 9.88 x 10^13 grams of ZnCI2, zinc chloride

A: Avogadro number: It can be defined as by saying that the number of units in one mole of any…

Q: 5. Compound X is composed of 52.2% carbon, 13.0% hydrogen, and the rest oxygen, by mass. The…

A: Compound X contain C= 52.2%                                    H= 13%…

Q: NaOH, NaNO2, NaCl, N

A:

Q: Why would the collective mass of twenty pennies not be equal to ‘20 x’ the mass of any individual…

A:

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.