Perform the following calculation to the correct number of significant figures: Suppose that Particle Xis a newly discovered element with a set of properties all its own. If a sample of Particle Xhas a mass of 21.40390 oz, what is the mass of Particle Xin kg? 1 oz of Particle X weighs 33.89 grams.

Q: I Review I Constants I Periodic Table For the following atoms, give the number of protons, neutrons,…

A: Part A 2713Al ; Number of protons (Np ) = 13 Number of electrons (Ne ) = 13 Number of neutrons (Nn…

Q: Predict the major substitution products of the following reaction. CH₂ H₂C. H CH₂OH Use the…

A: The given reaction is an example of a SN1 substitution reaction in which the first step is the…

Q: 106. Carbon-12 contains 6 protons and 6 neutrons. The radius of the nucleus is approximately 2.7 fm,…

A:

Q: Magnesium oxide was formed when the metal burns in air.  (i)            If 1.25 g of magnesium…

A: Answer:- This question is answered by using the simple concept of calculation of mass ratio of the…

Q: A fictitious element is composed of isotopes A and B with masses of 61.9887and 64.9846 amu,…

A: A conclusion has to be made on natural abundance of the two isotopes.

Q: The metal magnesium consists of 3 isotopes with the following atomic masses and abundances: 24Mg -…

A: Given,  24Mg - 23.99 amu (78.70%) 25Mg - 24.99 amu (10.13%) 26Mg - 25.98 amu (11.17%).

Q: The proton mass is 1.007276 amu, the neutron mass is 1.008665 amu, and the electron mass is…

A: Given Mass of proton(mp) = 1.007276 amu Mass of electron(me) = 0.0005486 amu Mass of neutron(mn) =…

Q: a)Silver is composed of two naturally occurring isotopes: Ag-107 (51.839%) and Ag-109. The ratio of…

A: In isotopes of any element, number of protons are equal but number of neutrons are different. They…

Q: (b) A certain element has two naturally occurring isotopes. The mass of one of the isotopes is…

A: Given, Mass of One Isotope = 106.905 amu Mass of second isotope = 108.883 amu  % isotope of one…

Q: A fictitious element only has two naturally occurring isotopes: X and Y. Isotope X has a mass of…

A:

Q: here are only two naturally-occuring stable isotopes of carbon. The mass and natural abundance of…

A: Here we have to consider the atomic mass from ALEKS periodic table.

Q: You have a compound with the formula X₂Y. X is an isotope with a mass of 20g/mol and Y is an isotope…

A: Mass of X = 20 g/mol Mass of Y = 43 g/mol

Q: A new element, greenriverium (Gr), has three naturally-occurring isotopes. Isotope 1 has a mass of…

A: The atomic mass is the average mass of all the isotopes. So that we calculate the average mass with…

Q: An element has the following natural abundances and isotopic masses: 90.92% abundance with 19.99…

A:

Q: Bromine has two naturally occurring isotopes (Br-79 and Br-81) and has an atomic mass of 79.904 amu.…

A: The given data contains, Atomic mass of Br = 79.904 amu. mass of isotope 81Br = 80.9163…

Q: How many protons, neutrons, and electrons are in the following atoms: (a) ²⁸Si; (b) ⁶⁰Ni; (c) ⁸⁵Rb;…

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

Q: Determine the numbers of protons, neutrons, and electrons in each of the following species: (a)…

A:

Q: Which of the following is not a fundamental particle?(a) proton; (b) neutron; (c) beta particle; (d)…

A: Correct answer is (d) alpha particle. Alpha particle is not a fundamental particle.

Q: Naturally occurring Europium (Eu) consists of two isotopes with a mass of 151amu and 153amu. If the…

A:

Q: In our modern view of matter and energy, is the law of massconservation still relevant to chemical…

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Q: An atom of a particular element has a volume of 7.8*10^-31 m^3. What is this volume in cubic…

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Q: olo There are only two naturally-occuring stable isotopes of boron, the masses of which are listed…

A: We will calculate the natural or relative abundance of Boron isotopes. we will apply simple mole…

Q: Q4) consider the element Xy that has an atomic number of 56. If this element has the following data…

A: We are given percentage of natural abundance and mass of its isotopes and we have to calculate it's…

Q: Consider the element Ti (p=22, n=26) with a nuclear mass of 7.94869 x 10-23 g. (Given: mass of…

A:

Q: A sample of Cl 2O was composed of 5.921 g of chlorine and 5.342 g of oxygen. How many grams of…

A: Given: In sample 1, Mass of Cl in Cl2O = 5.921 g. And Mass of O in sample 1 Cl2O = 5.342 g. And in…

Q: Prior to 1961, the atomic mass standard was defined as 1/16 ofthe mass of ¹⁶O. Based on that…

A:

Q: in chemistry class, a group of students dtermined the mass-t-charge ratio for an electron to be 5.64…

A: Given: mass to charge ratio = 5.64×1012 kg/C Charge of electron = 1.605×10-19 C   Note:There is typo…

Q: Calculate the average atomic mass of Amazium, a newly discovered element (Amazium, symbol Az) which…

A: Given :- There are only 2 naturally occurring isotopes of Amazium. Mass of isotope Az-230 = 229.995…

Q: The mass of a cesium (Cs, atomic number 55) atom is 2.21×10−25 kg, and its radius is R = 2.65×10−10…

A: An atom can be considered as the smallest unit of any matter. An atom is composed of certain…

Q: Which of the following formula and chemical name combinations is correctly shown? A B D N₂O₂;…

A: Given different chemical formula and their corresponding names. We need to identify the correct pair…

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: The atomic masses of chlorine-35 (75.780%) and chlorine-37 (24.220%) are 34.969 amu and 36.966 amu,…

A: To calculate : average atomic mass of Cl

Q: 7) Magnesium consists of three naturally occurring isotopes. The percent abundance of these isotopes…

A: Step 1:Atomic mass of magnesium -24 is 23.80428 amu  Step 2: Step 3: Step 4:

Q: An atom can be thought of as being

A: There exist three types of atoms with a single proton in their nucleus. These are the isotopes of…

Q: There are only two naturally-occuring stable isotopes of lithium. The mass and natural abundance of…

A:

Q: given the following data calculate the mass percentage of copper in the unknown copper oxide sample…

A: According to the question,Mass of empty test tube:…

Q: 5. When a 5.0 gram sample of Cu(NO,), • x H,0 is heated, 3.9 grams of the anhydrous salt remains.…

A:

Q: Estimate the percentage of the total mass of a atom that is due to (a) electrons, (b) protons, and…

A: Dear student, you have not mentioned the atom for which the mentioned percentage is required. I am…

Q: 15. Suppose pairs of balloons are filled with 10.0 g of the following pairs of gases. Which balloon…

A: • In each part, there is a same amount of particles i.e. 10 gm for each pair of gases is given. •…

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.