Show all your work on a sheet of paper to solve the following problem. Full credit is based upon the correct set up as shown in lec well as the correct answer. Be sure to give your answer to the correct number of significant figures. You can earn partial credit for problem. Do not give the units in your answer. What is the mass in grams of 4.75 x 1024 atoms of Ne?

Q: 10. Nitrogen, hydrogen, and ammonia (NH3) are all composed of molecules. What is it about a molecule…

A:

Q: A. Sentence Completion. Complete each statement with a word/ concept in the blank of the item. 1.…

A: Answer Complete the sentences with fill in the blank

Q: 15. This Foreverspin TM top os made of pure carbon, with an Atomic Mass of 12. This top weights 9…

A: Applying mole concept and avogadro number.

Q: The astronaut then measures the abundance of silicon on the new planet, obtaining the following…

A: Isotopes are defined as the ones which have same atomic number but different mass number. Atomic…

Q: Which pair of statements about mass is true? O A. After a physical change the total mass is the…

A: The pair of statements about mass is true has to be given,

Q: Solve this

A: The element contains one type of atoms only. The compound has two or more elements. The chemical and…

Q: 3. Let's try out the atomic mass equation. Suppose you have a mixture of two nitrogen isotopes. For…

A: To calculate the atomic mass of N.

Q: A copper atom has a mass of 1.06 x 10 g and a penny has a mass of 2.5 g. Use this information to…

A: Mass of Cu atom = 1.06 × 10-22 g Mass of penny = 2.5 g 1) Mass of 1 mole of Cu atom =? 2) Number of…

Q: Which of the following is not a correct mass of one sodium atom? a) 23 amu b) 23 g c) 3.82x10-23 kg…

A:

Q: Suppose that mercury forms a perfect spherical droplet with a diameter of 5.0 mm. (a) What is the…

A: Density is given by the ratio of mass of the substance to its volume. 1 mole of a substance contains…

Q: How many copper (Cu) atoms are contained in a pure copper penny that weighs 12.5 grams?…

A: Consider the given information is as follows; Mass of pure copper penny = 12.5 g Atomic mass of Cu =…

Q: Use the periodic table from an alternative universe below to answer the questions! Symbo 1A 2A 8A…

A: Using the periodic table and the group in which the elements belong, The valency of : K is +1 O is…

Q: A copper atom has a mass of 1.06 × 10 -22 g and a penny has a mass of 2.5 g. Use this information to…

A: Number of Moles = Given mass / molar mass

Q: – 12 mg and an oil tanker has a mass of 3.0 x 10' kg. A virus has a mass of 9.0 x 1 Use this…

A:

Q: There are 1.699 x 1022 atoms in 1.000 g of chlorine.  Assume that chlorine atoms are spheres of…

A: Number of atoms in 1 g chlorine = 1.699 × 1022 atoms Number of atoms in 0.5 g chlorine = 0.5 × 1.699…

Q: Use the periodic table from an alternative universe below to answer the questions Symbol A 1A 2A 8A…

A: Amount of product formed calculation using stoichiometric coefficients of balanced Chemical equation…

Q: Fluorine (F) and sulfur (S) can form several different compounds. In one analysis it shown that the…

A: Given: Mass of F in compound 1 = 5.55 g. Mass of S in compound 1 = 1.56 g. Mass of F in compound 2 =…

Q: -In this molecule, is Cl = Chlorine a neutral atom, an ion or an isotope? %3D -In this molecule, Mg…

A: NOTE : Since the molecular formula is not visible in the pic, I'm assuming it to be MgCl2 as per the…

Q: If the radius of a neutron is 1.0 x 10-13 cm, calculate the density of a neutron in g/cm3 . (volume…

A: Given, radius(r) = 1.0 × 10-13 cm we know that the neutron is spherical in shape so the volume of…

Q: A virus has a mass of 9.0 x 10 12 mg and an oil tanker has a mass of 3.0 × 10´ kg. Use this…

A: Mass of virus = 9.0× 10^-12 mg Mass of tanker = 3.0× 10^7 kg

Q: Be sure your answers have the correct number of significant digits. mass natural isotope Ox10 (amu)…

A: The average atomic mass of element is equal to the product of the masses of the isotope and its…

Q: Circle the best correct answer for the following multiple choice questions: 1) How many aluminum…

A:

Q: The law of constant composition can be used to find the answer  A sample of the chemical compound…

A:

Q: It is well known that the element magnesium has three naturally occurring isotopes. Mg-24 represents…

A: It is clearly indicates that the Mg-24 posses a natural abundance of 79% along with other isotopic…

Q: A sample of chloroform is found to contain 12.0 g of carbon, 106.4 g of chlorine, and 1.01 g of…

A: According to law of constant proportional, any chemical compound will always contain the elements in…

Q: Potassium has three naturally occurring isotopes.  According to one source of data, Potassium-39…

A: Average atomic mass of Potassium  = (38.9637 × 0.9326 ) amu + (39.9640 × 0.0001 ) amu + ( 40.9618 ×…

Q: Similar to teams of ballplayers, elements have symbols (abbreviations or logos) and are arranged in…

A: Element name Element symbol Group number Period number  Chlorine Cl 7 3 Calcium Ca 2 4 Radium…

Q: A sample of chloroform is found to contain 12.0 g of carbon, 106.4 g of chlorine, and 1.01 g of…

A: According to the law of multiple proportions two or more elements are combined to form a compound in…

Q: If a compound is made up of carbon and hydrogen only, what is the mass of its sample that contains…

A:

Q: Which of the following statements is/are correct about the figures below? Select all that apply.…

A: Statement 1 is incorrect because oxygen is diatomic molecule but in the figure monoatomic molecules…

Q: How many protons and electrons are there in a neutral atom of each of the following elements?

A: Number of protons in a neutral atom is equal to its atomic number. Number of electrons in a neutral…

Q: Which methods separate a mixture according to the size of the particles? distillation and…

A: Given: To identify the methods which separate the mixture based on the size of the particles.

Q: In the following descriptions the particles are atoms, molecules, or ions.To which sample above does…

A: Comparing solid, liquid and gas, gases are more compressible since most of the volume of a gas have…

Q: A sample of aspirin synthesized in the laboratory contains 26.0 g of carbon and 15.4 g of oxygen. A…

A: Given : 1st sample contains 26 g of carbon and 15.4 g of oxygen. 2nd sample contains 8.16 g of…

Q: Volume occupied by electrons Nucleus Part A containing protons and neutrons- What is the approximate…

A: The diagram given is,

Q: Sulfur and fluorine form several different compounds including sulfur hexafluoride and sulfur…

A: Law of multiple proportions states that on the combination of two elements, the masses of one of the…

Q: Antimony, Sb has 2 isotopes and an atomic weight of 121.75 amu. The isotope anitimony-121 has a…

A: Given percentage abundance  Sb-121 = 57.25℅ Sb-123 = 41.75℅ Mass of Sb-123 = 122.9041 amu atomic…

Q: A modern penny weighs 2.5 g, but is only  2.52 % copper by mass.  Calculate the number of copper…

A:

Q: calculations

A: Here we are calculating  mass by using molecular mass

Q: A 12.29 g sample of NaBr contains 22.34% Na by mass. Considering the law of constant composition…

A: The law of definite proportion states that a given chemical compound always contains its component…

Q: One mole of silicon (6 x 1023 atoms) has a mass of 28 grams, as shown in the periodic table on the…

A: Given :- Mass of 6 × 1023 atoms = 28g  Density = 2.4g/cm3

Q: 11. A stack of 500 sheets of typed paper is 1.9 inches thick. The thickness, in inches, of a stack…

A: If the stack of 500 sheets of paper is 1.9 inches thick, then each sheet of paper has thickness of…

Q: Does the total mass of the reactants and the total mass of the products appear to be equal after…

A: Yes, the total mass of reactants before chemical reaction and total mass of products after chemical…

Q: Explain in your own words, by writing a short paragraph, how the atomic theory predicts the law of…

A:

Q: SECTION 2: WHY DOES A MOLE HAVE A DIFFERENT MASS? PART A: WATCH THE VIDEO to fill in the blanks and…

A: To fill in the blanks on the information about atom

Q: On a mission to a newly discovered planet, an astronaut finds gallium abundances of 60.11 % for 69…

A: Average atomic mass =((percentage of abundance isotope 1 x molecular mass of of isotope 1…

Q: Use the mass spectrum of lead shown here to estimate 100% - the atomic mass of lead. Esti- mate the…

A: INTRODUCTION: Mass spectroscopy is defined as the technique used to determine the atomic mass of an…

Q: Which of the following is not a correct mass of one sodium atom? a) 23 amu b) 23 g c) 3.82x10-23 kg…

A:

Q: Silver has two naturally occurring isotopes: Ag-107 and Ag-109. The Ag-107 isotopes has a percent…

A: Given: The atomic mass of Ag-107 =106.905 amu The percent abundance of Ag-107 =51.84 % The atomic…

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.