Concept explainers
Interpretation:
Atomic masses of nitrogen and oxygen are given and the molar mass of compound
Concept Introduction:
Sum of atomic masses of all the atoms that are represented in chemical formula of substance is known as formula mass. If
Molar mass is the mass that is expressed in grams of a substance that is equal to the formula mass of the substance numerically. Molar mass of an element is unique for the particular element. Two natural elements can never have the same molar mass.
Mole is defined as the amount of substance that has as many elementary particles as there are atoms in exactly 12 grams of
The relationship between the atomic mass unit and grams unit is,
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General, Organic, and Biological Chemistry
- The atomic mass of C is 12.01 amu and that of O is 16.00 amu. The formula mass for the compound CO2 is: a. 28.01 amu b. 44.01 amu c. 56.02 amu d. no correct responsearrow_forwardMatter can be represented as being composed of individual units. For example, the smallest individual unit of matter can be represented as a single circle, , and chemical combinations of these units of matter as connected circles, , with each element represented by a different color. Using this model, place the appropriate labelelement, compound, or mixturebelow each representation.arrow_forwardThe number of atoms present in 1 mole of P atoms is a. 6.02 1021 b. 6.02 1023 c. 6.02 1025 d. no correct responsearrow_forward
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- You have 1.5 moles of tricycles. a How many moles of seals do you have? b How many moles of tires do you have? c How could you use parts a and b as an analogy to teach a friend about the number of moles of OH ions in 1.5 moles of Mg(OH)2?arrow_forwardPractice chem questionarrow_forwardEXERCISE 1. C + O2 → _CO 2. Mg + O2 → _MgO 3. H2O2 → H2O + O2 4. CH4 + O2 → CO2 + H2O 5. N205 → N2O4 +arrow_forward
- The molecules present in a compound must be a. heteroatomic b. triatomic c. diatomic d. no correct responsearrow_forwardE Knowledge Check Question 7 6.50 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have a molecular molar mass of 176. g/mol, is burned completely in excess oxygen, and the mass of the products carefully measured: product mass carbon dioxide 9.75 g water 2.66 g Use this information to find the molecular formula of X. I Don't Know Submit Privacy Accessibity O2020 McGraw-Hill Education, All Rights Reserved. Terms of Use DIMG 20201214 15..jpg IMG 20201214 15...jpg O Type here to searcharrow_forwardThe element chlorine, which has two isotopic forms, has an atomic mass of 35.5 amu. This means that a. all chlorine atoms have a mass of 35.5 amu b. some, but not all chlorine atoms have a mass of 35.5 amu c. no chlorine atoms have a mass of 35.5 amu d. no correct responsearrow_forward
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