What is the mass of 1 atom of krypton? Group of answer choices A. 3x10-22 g B. 2x10-26 g C. 9x10-22 g D. 1x10-22 g E. 5x1025 g

Q: A 23.6 g sample of CaSO, is found to contain 6.95 g of Ca and 11.1 g of O. Find the mass of sulfur…

A: To find mass of sulfur, first find out mass of S in 23.6g sample. Then use the relation to calculate…

Q: Sulphur has three common isotopes, with the masses and isotopic abundances shown below: Sulphur-32…

A: Average atomic mass: The average atomic mass of an element is the sum of the masses of its isotopes,…

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

A: Part A Decomposition of sulfur hexafluoride produce: fluorine = 4.46 g sulfur = 1.23 g

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: (d) CO(NH2)2 (aq) + H2O (1) 2 CO2 (g) + 2NH3 (g) AH = +28.4 kkal (e) N204 (g) 2NO2 (g) AH = +14 kkål…

A: "Since there are multiple sub-parts in this question and it is not mentioned that which one has to…

Q: a. Calculate the Natural Abundance of 4°X and enter it into the chart. b. Calculate the isotopic…

A: The given molecule X has 3 isotopes which are 36X, 38X, and 40X.  Percent natural abundance of  36X…

Q: 49 g of H,SO, contains: Select one: 24 a. 1.2 x 10 oxygen atoms b. All is true 23 c. 3.01 x 10…

A: Since you have posted multiple unrelated questions, we are entitled to answer the first only.

Q: If 26.98 grams is the mass of 1 mole of Aluminum, 26.98 grams =1 mole of Al 13.49 grams = 0.5 moles…

A: Mole concept relates the number of moles with the molar mass and mass of the substance. Just like…

Q: The following shows the mass ratio of Ca and CI2 and the mass of CaCl2 formed in various…

A: The mass ratio of calcium and chlorine and the mass of calcium  chloride obtained in four different…

Q: 1. Showing all calculations, determine the mass of copper in the Cu(NH3)4SO4 • H2O you made.…

A: Given: The mass of Cu(NH3)4SO4.H2O = 1.5787 g. The molar mass of Cu(NH3)4SO4.H2O = 245.79712 g/mol.…

Q: Convert atomic mass of Ca to g. atomic mass of Ca is 40.08 amu  Group of answer choices   A.) 3.00…

A:

Q: Carbon exists as 3 isotopes. It is 88% C-12, 1% C-13 and 11% C-14. What is the average atomic mass…

A: average atomic mass= isotop% multiplied by atomic mass /100

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

A: Reaction of formation of SF6 is as follows: Mass of Fluorine per gram of Sulphur in Sulfur…

Q: Calculate the mass of a com occupies 9.27 Lat -7.46 °C Vour Ancu

A: P V = n R T  Where  P = 887 mmHg x 1 atm / 760 mmHg     = 1.167 atm  V = 9.27 L  T = - 7.46 °C +…

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

A:

Q: 34. Barium Carbonate (s) Barium Oxide (s) + Carbon Dioxide lg) a&b: C: d:

A: Answer:- this question is answered by using the simple concept of writing the balanced chemical…

Q: 5. Boron exists as two isotopes, Boron-10 and Boron-11. The average atomic mass for boron on found…

A: Isotopes are the chemical species having same atomic number but different mass number. Isotopes of…

Q: d) The atomic mass of silver is 107.8682 u. Determine the mass density of Ag in g/cm.

A: Given, Atomic mass of silver is 1o7.8682 u Lattice constant = 4.09 Ao  Mass density = ?

Q: A 22.3 g sample of CaSO4 is found to contain 6.57 g of Ca and 10.5 g of O. Find the mass of sulfur…

A: Mass percentage of an element in a compound indicates the ratio of mass of that element in the…

Q: A sample of 5.000 g of nitrogen can be combined with 5.714 g of oxygen to form nitric oxide gas…

A: The amount of products formed for the given quantity of reactants is determined using stoichiometry.…

Q: Rank the particles from most to least massive

A: In an atom; The mass of Neutron=1.693×10-27 kgThe mass of Proton=1.673×10-27 kgThe mass of…

Q: e.) Light travels 186 000 miles / second. How long is a light year in meters? (1 light year is the…

A: 3. e.) Given: Light travels 186 000 miles/second. First determine the number of seconds value in one…

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: examples of Ssily the definitions in the introduction. Cr2 O3 + 2Al- 2Cr + Al½O3 CH4 + 202+ CO2 +…

A:

Q: Thank you! Required info: The mass of 1 mol of 13C (carbon-13) is 13.003 g a) what is the mass in u…

A:

Q: Which of the following contains the highest number of atoms? A) 1 mole of helium B) 1 mole of carbon…

A: 1 mole = 6.022×1023 = Avogadro's number Anything which is present in the number of 6.022×1023 is…

Q: 00 Не Enter the percent volume of He in the visualization. MM[He]=4.003 g/mol, MM[N2]=28.01 g/mol.

A: In 1 mol of helium there is 6.022×1022 atoms of helium. So, for the given system the number of moles…

Q: A hydrogen-filled balloon was ignited and 1.70 gg of hydrogen reacted with 13.6 gg of oxygen. How…

A:

Q: Determine the number of atoms in 1.85×10^-3L of Mercury. [The density of mercury is 13.5g/mL.]

A:

Q: Antimony (Sb), has two naturally occurring isotopes: Sb-121 that has a percent abundance of 57.30 %…

A: Given: Antimony (Sb) has two isotopes Sb-121 and Sb-123 Mass of Sb-121 =120.90 amu Percentage…

Q: 1. Pereent abundance A. Calculate the average Mass of Ni'? 1 100 60 (242351 20 (10%) 38 62 64…

A: A question based on atomic structure, which is to be accomplished.

Q: A sample of 7.000 g of nitrogen can be combined with 8.000 g of oxygen to form nitric oxide gas…

A: In NO, the ratio of moles of N and O is = N : O = 1 : 1. Hence 1 mole of NO contains 1 atom of N and…

Q: Determine which sample contains the mos atoms. A 10 g sample of Uranium 11 g sample of copper  1 g…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: Antimony (Sb), has two naturally occurring isotopes: Sb-121 that has a percent abundance of 57.30 %…

A:

Q: CPM eBooks - CCA. Use the periodic table from an alternative universe below to answer the questions…

A: Mass of M=60 grams Mass of MAx3=?

Q: A solid circular cone made of pure platinum (d = 21.45 g/cm3 ) has a diameter  of 2.75 cm and height…

A: Density of a substance is given by the ratio of mass to its volume. Density = MassVolume Volume of a…

Q: 1) C a b The number of lines exhibited by hydrogen(s) a is The number of lines exhibited by…

A:

Q: A cable making company produces a metal wire, with a diameter of 1.00 mm. What will be the length of…

A: Given: Metal wire diameter=1 mm No. of moles=1 Density of metal=17 g/cm3

Q: If element X has an atomic mass of 37.45 amu and is composed of x-38 and x-35, find the percent x-38…

A: Concept introduction: Mass of an element is the actual amount of substance is present in it and mass…

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

A:

Q: A sample of carbon weighting 1.48 g was burned in an excess of air. The mass of carbon dioxide, the…

A: This can be calculated in context to the percent mass of carbon. The reaction occurring in the…

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: The mass of the pycnometer with water is 30.5 g, while the mass of the pycnometer is 36.5 g. What is…

A: The mass of pycnometer with water = 30.5 g The mass of the pycnometer = 36.5 g The mass of water =…

Q: Imagine a new element (symbol X) has been found on Mars. Four isotopes of the element have been…

A: Average atomic mass of element X can be calculated by using the equation: Average atomic mass of X =…

Q: Q.27. Find number of aluminum (Al) atoms in a peace of pure (Al) block with dimensions equal to 2.0…

A: The number of atoms present in the sample of an element is defined as the product of number of moles…

Q: 70: Find the masses of P O, and P,O,0 10

A:

Q: Mass of magnesium before is 0.33g Mass of magnesium after is 0.49 g   Identify major sources of…

A: Interpretation -  To explain about how the mass of magnesium is differ too much before weighing…

Q: Determine which statements are consistent with Dalton's atomic theory. Inconsistent Consistent…

A: Given statements: Atoms of the same element have identical properties; atoms of the different…

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.