An atom of bromine has a mass about four times greater than that of an atom...
An atom of bromine has a mass about four times greater than that of an atom of neon. Which choice makes the correct comparison of the relative numbers of bromine and neon atoms in 1,000 g of each element? An atom of bromine has a mass about four times greater than that of an atom of neon. Which choice makes the correct comparison of the relative numbers of bromine and neon atoms in 1,000 g of each element?
An atom of bromine has a mass about four times greater than that of an atom of neon. Which choice makes the correct comparison of the relative numbers of bromine and neon atoms in 1,000 g of each element? An unknown compound with a molar mass of 155.06 g/mol consists of 46.47% C, 7.80% H, and 45.72% CI. Find the molecular formula for the compound.
all of them please!!!!! 12. What is the volume, in liters, of 12.0 moles of bromine? Bromine is a liquid at room temperature and has a density of 3.12 g/cm 13. Calculate the density of sulfur if you have 9.92x102 atoms in 2.51x10 L? UNITS 14. Calculate the number of hydrogen atoms in 0.252 ML of sulfuric acid. (D=1.02g/mL) 15. Indicate whether the following is true or false. If it is false, correct it to make it true. a. If...
Post-lab Questions Part 2 8. Among the elements, hydrogen has the least massive atoms. An atom of hydrogen has an average mass of 1.66 x 10-24 g. This mass is very small, but remember it is only one atom which is composed of one proton and one electron! What is the relative mass of hydrogen if it is the least massive element? 9. How do the atomic masses found on the periodic table compare to the relative masses you calculated?...
Ul Tuise. iSUlBpes are atoms of the same element that have the same atomic number but different mass numbers. A. True B. False 9. The table below describes four atoms. Atom B 81 120 81 Atom C 80 118 80 Atom D 79 120 79 Atom A 79 118 79 Number of protons Number of neutrons Number of electrons Which atoms represent the same element? Ul Tuise. iSUlBpes are atoms of the same element that have the same atomic number...
1) Which statement concerning the structure of the atom is correct A) Protons and Neutrons have most of the mass and occupy C) Electron have most of the mass and occupy very little of the volume of the atom B) Electron have most of the mass and occupy most of the volume of the atom most of the volwne of D) Protons and Neutrons have most of the mass but occupy very little of the volume of the atom 2)...
Answer these questions about the substance given by the formula CBr₄: a.) Classify the substance: is it an element, a compound, a homogenous mixture, or a heterogeneous mixture? b.) If the substance is an element, is it a metal, nonmetal, or a metalloid? c.) If the substance is a compound, is it an ionic compound or a molecular compound? d.) What is the name of the substance? e.) What is the mass of a mole of the substance? f.) In...
26 Which statement is NOT TRUE? (A) Every atom of a given element has the same number of protons. (B) Almost all of the mass of an atom is located in the nucleus. (C) A given chemical species doesn't always have the same type and number of atoms. (D) The large cloud region of the atom contains electrons, which are 50% of the mass of the aton (E) Different isotopes of the same element have different numbers of neutrons.
1.According to the periodic table, a single (1 exactly) carbon atom has a mass of 12.011 amu. What is the mass of a single carbon atom in grams? 2. How many carbon atoms does it take to equal 12.011 grams? Complete the dimensional analysis set up provided for you (Hint: Your answer to question 1 can help answer this question). (Round to 3 sig figs) 3. According to the periodic table, a single phosphorus atom has a mass of 30.973...
please complete the questions has not answering with clarification of the answer to any page Name Lab Section _Date The Mole Concept and Atomic Weights The purpose of this activity is to better understand the concepts of relative atomic mass, counting by weighing and the mole. Percent composition and average atomic mass are included. Part I. Relative Atomic Masses and the Mole - Early Method When John Dalton proposed his atomic theory, he stated that the atoms of each element...