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the 2kg is closest to 2020g because it is the only number that can work for this answer.

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What is the mass of one mole of Al2O3 if aluminum has an atomic number of 13 and an atomic mass of 26.98 and oxygen has an atomic number of 8 and an atomic mass of 16.00?

The mass of one mile of a compound is found by adding up the atomic masses of each of the component elements. A mole of Al2O3 has mass of 2 × 26.98 + 3 × 16.00 = 101.96g


In modern periodic table the elements are designed on ascending seris of 1. atomic mass 2. mass number 3. atomic number 4. electromic configuration?

In the modern periodic table, elements are arranged in ascending order of atomic number. This is because the properties of elements are primarily determined by the number of protons in the nucleus, which is the atomic number. The periodic table is organized in a way that elements with similar chemical properties are grouped together in columns (groups) and elements with increasing atomic number are arranged in rows (periods). Mass number, atomic mass, and electron configuration are related properties but are not used as the primary basis for organizing elements in the periodic table.


What is the relative atomic mass of hydrogen peroxide?

The relative atomic mass of hydrogen peroxide, H2O2, is approximately 34.01 g/mol. This value is calculated by adding the atomic masses of the elements in the molecule (2 hydrogen atoms and 2 oxygen atoms).


Is the atomic mass equal to the molar mass?

1. The molecular mass of a compound is the sum oh the atomic weights of the elements contained in the molecule of this compound. 2. The atomic number of an element is the number of this element in the Periodic Table of Mendeleev; the atomic number is equal to number of protons and electrons.


What are the atomic mass of elements rarely whole numbers?

1. First cause: the atomic weight is the sum of the weights of protons, neutrons ans electrons.; they don't have masses as integers.2. Second cause: also occurs the so-called mass defect.Not atomic mass for elements; atomic weight is correct.


What is the atomic number and mass number of deuterium 2H?

The atomic number of deuterium (2H) is 1, as it has one proton in its nucleus. The mass number of deuterium is 2, which is the sum of the protons and neutrons in its nucleus (1 proton + 1 neutron = mass number of 2).


What is the number of neutrons for a specific element equal to?

The average number of neutrons that a specific element has is equivilent to the element's atomic mass minus the that elements atomic number. For example Helium has 2 neutrons because its atomic mass (4) minus the atomic number (2) is 2.


What properties did mendeleev use to arange the the periodic table?

Mendeleev arranged the periodic table based on increasing atomic mass and grouped elements with similar properties together. He also left gaps for undiscovered elements and predicted their properties based on the pattern of the known elements.


What is the atomic mass in Hindi?

The atomic mass (ma) is the mass of a specific isotope, most often expressed in unified atomic mass units.[1] The atomic mass is the total mass of protons, neutrons and electrons in a single atom.[2]The atomic mass is sometimes incorrectly used as a synonym of relative atomic mass, average atomic mass and atomic weight; these differ subtly from the atomic mass. The atomic mass is defined as the mass of an atom, which can only be one isotope at a time and is not an abundance-weighted average as in the case of atomic weight. In the case of many elements that have one dominant isotope the actual numerical similarity/difference between the atomic mass of the most common isotope and the relative atomic mass or standard atomic weights can be very small such that it does not affect most bulk calculations-but such an error can be critical when considering individual atoms. For elements with more than one common isotope the difference even to the most common atomic mass can be half a mass unit or more (e.g. chlorine). The atomic mass of an uncommon isotope can differ from the relative atomic mass or standard atomic weight by several mass units.


What periodic element has a mass of 50.9?

Three elements (isotopes) are known to have an atomic mass of 39.96:Ar-40 (99.6%), K-40 (0.01%) and Ca-40 (96.9%).(Percentage value of naturally occurring in elements.)


What is the symobel and atomic number and atomic mass for helium?

Symbol: He atomic #: 2 atomic mass: 4.002602


What is the atomic mass for hydrogen-2?

The atomic mass of hydrogen-2, also known as deuterium, is approximately 2.014 atomic mass units. It is slightly heavier than normal hydrogen, which has an atomic mass of approximately 1.008 atomic mass units.