A binary compound of oxygen and an unknown element, X, has the formula XO2 and is...
A binary compound of oxygen and an unknown element, X, has the
formula XO2 and is
72.71 mass % oxygen.
(a) What is the atomic weight of element X? u
(b) What is the symbol for the element on the periodic table? X
=
(c) Is the element X a metal or not? _________?
(d) Is the compound XO2 likely to be
ionic or covalent?_________ioniccovalent
(e) What is the name of the compound?
Homework Answers
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A binary compound of oxygen and an unknown element, X, has the
formula XO2 and is...
0/6.66 points I AE.094 Ask Your Teacha binary compound created by reaction of an unknown element...
0/6.66 points I AE.094 Ask Your Teacha binary compound created by reaction of an unknown element E and oxygen contains 30.09% E and 61.11% 0 by mass. ห the formula ofthe compound ist,o,. calculate the atomic mass of E. -27 x amu
An unknown metal (X) forms the compound XO2. If X forms a compound with chloride ion,...
An unknown metal (X) forms the compound XO2. If X forms a compound with chloride ion, what would the formula of that compound be? XCIA OxCl3 XCI2 ХСІ X₂C1
An unknown element (Element X) has three naturally occurring isotopes. Complete the table by filling in...
An unknown element (Element X) has three naturally occurring isotopes. Complete the table by filling in the missing percent abundance (2 decimal places). Then calculate the atomic mass of element X (1 decimal place) and determine its identity by filling in its atomic symbol (case sensitive). Isotope Abundance (%) Atomic Mass (amu) 23.985042 1 78.99 2 24.985837 10.00 3 25.982593 amu Atomic mass of element X (1 decimal place): Atomic symbol of element X:
A compound has the formula XMnO4. X accounts for roughly 25% of the mass of the...
A compound has the formula XMnO4. X accounts for roughly 25% of the mass of the compound. Which is the cation and which is the anion in this compound, X or MnO4? What is the name of the anion? What is the charge of the anion? What is the likely group of the cation? Ions have a molecular mass the same way that atoms have an atomic mass. This is found by adding together the atomic masses of the constituents....
Ionic & Covalent Virtual Lab Pre-Virtual Lab Questions: Answer these before going to the website to...
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You, the chemistry detective, have obtained a water-insoluble ionic compound with the formula XYZ3 where X...
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12. Suppose that a stable element with atomic number 120, symbol Z, has been discovered. a....
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II. Using the Periodic Table to determine the ionic charge, predict the formulas of the binary...
II. Using the Periodic Table to determine the ionic charge, predict the formulas of the binary compounds formed from the following combinations of elements and write the name for each compound. a. calcium and iodine b. aluminum and oxygen c. magnesium and nitrogen III. Write the name for each of the following ionic compounds: a. Na20 b. AlF; c. Cu2S d. Fe e . ZnCl2 IV. Name of the following covalent compounds: a. N₂O5 b. SCl2 c. Cho d. SiBra...
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36. Classify each of the following formulas as (1) a binary ionic compound, (2) an ionic...
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0/6.66 points I AE.094 Ask Your Teacha binary compound created by reaction of an unknown element E and oxygen contains 30.09% E and 61.11% 0 by mass. ห the formula ofthe compound ist,o,. calculate the atomic mass of E. -27 x amu
An unknown metal (X) forms the compound XO2. If X forms a compound with chloride ion, what would the formula of that compound be? XCIA OxCl3 XCI2 ХСІ X₂C1
An unknown element (Element X) has three naturally occurring isotopes. Complete the table by filling in the missing percent abundance (2 decimal places). Then calculate the atomic mass of element X (1 decimal place) and determine its identity by filling in its atomic symbol (case sensitive). Isotope Abundance (%) Atomic Mass (amu) 23.985042 1 78.99 2 24.985837 10.00 3 25.982593 amu Atomic mass of element X (1 decimal place): Atomic symbol of element X:
Ionic & Covalent Virtual Lab Pre-Virtual Lab Questions: Answer these before going to the website to begin the virtual lab. 1. Where are metal atoms located on the periodic table? Where are non metal atoms located on the periodic table? 2. What subatomic particles) participate in chemical bonding? 3. In your own words, define valence electrons. 4. How can you determine the number of valence electrons in an atom using the periodic table? 5. Draw a Lewis Dot Structure for...
You, the chemistry detective, have obtained a water-insoluble ionic compound with the formula XYZ3 where X represents a metal, and Y and Z are both nonmetals. Answer the questions below, identify the ionic compound and find its percent composition by mass. (25 points) a) The metal X is a member of transition metals of the 4th period. It is one of the three elements that have the highest electronegativity among the transition metals of the 4th period, but unlike the...
12. Suppose that a stable element with atomic number 120, symbol Z, has been discovered. a. Write the ground-state electron configuration for 2, showing only the valence-shell electrons. b. Would Z be a metal or a nonmetal? Explain in terms of electron configuration. c. On the basis of periodic trends, would Z have the largest atomic radius in its group or would it have the smallest? Explain in terms of electronic structure. d. What would be the most likely charge...
II. Using the Periodic Table to determine the ionic charge, predict the formulas of the binary compounds formed from the following combinations of elements and write the name for each compound. a. calcium and iodine b. aluminum and oxygen c. magnesium and nitrogen III. Write the name for each of the following ionic compounds: a. Na20 b. AlF; c. Cu2S d. Fe e . ZnCl2 IV. Name of the following covalent compounds: a. N₂O5 b. SCl2 c. Cho d. SiBra...
22. An unknown element, X, reacts with oxygen to form two oxides with the general formula X2O3 and X20s. The pure element is paramagnetic, and the oxides are amphoteric. Which of the following elements could be represented by X?! a. Bi b. Na c. Sc d. S e. As
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