Locate each of the following elements in the periodic table;give its name and atomic number, and indicate whether it isa metal, metalloid, or nonmetal: (a) Li, (b) Sc, (c) Ge, (d) Yb,(e) Mn, (f) Sb, (g) Xe.
Q: If the molecular mass of an oxide of nitrogen is 108 and 4.02 g of N combine with 11.48 g of O, what…
A: Given, Given mass of nitrogen = 4.02 g Molar mass of nitrogen = 14.01 g/mol Given mass of oxygen =…
Q: Give the number of atoms of the specified element in a formula unit of each of the following…
A: a) The given compound is C6H5COONH4 The number of a hydrogen atom is 9 The molecular mass of the…
Q: 2. A sample of a substance containing only carbon, hydrogen, and oxygen has mass x in grams. It is…
A: The equation for the burning of carbohydrate is: x12a+b+16c CaHbOc + O2 → y44CO2 + Z18…
Q: We experimented on various elements: Mossy Zinc, Aluminum Turnings, Copper Turnings, Activated…
A:
Q: K: Mn: Ge: Kr:
A:
Q: Change 1 Change 2 Change 3 Change 1 is: Change 2 is: Change 3 is: impossible impossible impossible a…
A: Applying definition of physical and chemical changes. A change which provides new matter is chemical…
Q: Which of the following elements are metals? C Ca Br Co Ni Ar Li Al O ?
A: Metal are electropositive in nature Metals are have less electronegativity In periods from left to…
Q: Give the number of atoms of the specified element in a formula unit of each of the following…
A: Given: (a) Oxygen in aluminum sulfate, Al2(SO4)3(b) Hydrogen in ammonium hydrogen phosphate,…
Q: Which of the following represents a chemical property of hydrogen gas? O It reacts explosively with…
A: To identify: The chemical property of hydrogen gas.
Q: The monatomic ions of Groups 1A(1) and 7A(17) are all singly charged. In what major way do they…
A: To find: The monatomic ions of Groups 1A(1) and 7A(17) are all singly charged. In what major way do…
Q: A mass spectrometer is an instrument that allows scientists to determinethe presence of elements in…
A: The elements are arranged as the periodic function of atomic numbers. The elements are arranged in…
Q: Which pair of elements would you expect to exhibit the greatest similarity in their physical and…
A:
Q: The radius of a tantalum atom is 142 pm. How many tantalum atoms would have to be laid side by side…
A: Given: Radius of tantalum atom = 142 pm And total distance given = 2.85 mm.
Q: Main-group elements are those in the columns 3A to 8A of the Periodic Table. True or Flase?
A: Representative elements are known as main group elements of the periodic table.
Q: How many atoms of O are found in 1.00 x 10 2 g of K 2Cr 2O 7 ?
A: Number of atoms of Oxygen present in the given compound can be calculated as -
Q: 5 g of anhydrous strontium nitrate is added to a beaker and exposed to air. After several hours the…
A: Given that - Mass of strontium nitrate = 5 g Mass of water Increases due to exposed in air = 1.70…
Q: Describe the PHYSICAL PROPERTIES of the following Specifically, what type of matter is this? (e.g.…
A:
Q: There are four sketches below. The first sketch shows a sample of Substance X. The three sketches…
A: Answer:- This question is answered by using the simple concept of physical change and the chemical…
Q: Sample of Substance X Change 1 Change 2 Change 3 Change 1 is: Change 2 is: Change 3 is: O impossible…
A: Physical changes are those changes in which only Physical state of matter change, while their…
Q: 2b. A student formulates the following hypothesis: "If phosphorus were to form a positive ion, P**,…
A: The atomic radius of an element is provided as the distance between the center of the nucleus and…
Q: A new compound has the empirical formula GaCl2. Thissurprises some chemists who, based on the…
A: The empirical formula of new compound is s GaCl2 . Since gallium is belongs to group 13, it exhibit…
Q: Rank the masses of the elements from lightest to heaviest. To rank items as equivalent, overlap…
A: Atomic masses of the elements: B : 11 u Cr: 52 u Li: 7 u
Q: For each of the following elements, write its chemical symbol,locate it in the periodic table, give…
A:
Q: What is the molar mass of the compound with the formula X2Y2Z7, where X is an alkali metal from the…
A: Given: The compound with the molecular formula, X2Y2Z7, X= alkali metal from the 3rd period. Y= an…
Q: What is the % mass of oxygen in citric acid, C6H807?
A:
Q: There are four sketches below. The first sketch shows a sample of Substance X. The three sketches…
A: Chemical change: The process in which the molecular composition is completely changed, and a new…
Q: Lithium nitride reacts with water to produce ammonia and lithium hydroxide according to the equation…
A: Given;
Q: Which of the following elements is not a representative element? O Nickel Cadmium Silicon O Barium
A: I A, IIA, IIIA, IV A, VA, VI A, VII A, VIII A elements are called representative elements. Between…
Q: Sample of Substance X Change 1 Change 2 Change 3 Change 1 is: Change 2 is: Change 3 is: O impossible…
A: Physical change is defined as the one in which the form/state of the particle changes but their…
Q: The anticancer drug Platinol (Cisplatin), Pt(NH₃)₂Cl₂,reacts with the cancer cell’s DNA and…
A: The amount of a particular compound present in a solution is expressed by the various concentration…
Q: The elements of group 4A show an interesting change in properties moving down the group. Give the…
A: The name and chemical symbol of each element in the group 4A is to be given and label it as a…
Q: The elements of Group 1-B (Cu, Ag, and Au) are sometimes referred to as the “coinage metals.” Why?…
A: Elements Copper ( Cu), Silver ( Ag) and Gold (Au) are called as 'coinage metals' because as they…
Q: 2-75. A sample of rutile, an ore of titanium consist- ing principally of TiO,(s), was found to be…
A: The question is based on the concept of quantitative analysis. we have to calculate how much…
Q: 5. Which of the following is a species with 12 protons and 10 electrons? a) Ne?* b) Ti2* c) Mg? d)…
A: Number of proton = atomic number Number of electrons =( atomic number) +- charges
Q: There are four sketches below. The first sketch shows a sample of Substance X. The three sketches…
A:
Q: In the periodic table, calcium, element 20, is surrounded by elements 12 magnesium , 19 potassium,…
A: The most resemple element of calcium atom is magnesium and Strontium.
Q: What is the symbol of the element in Group 4A(14) and Period 2?
A: Given, Group number of the element = 4A that is 14 And Period number of the element = 2 What is…
Q: Describe the PHYSICAL PROPERTIES of the following substances Specifically, what type of matter is…
A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…
Q: Given that you had 1 mol glucose (C 6H 12O 6), what would the mole ratio of glucose to oxygen be?
A: Balance Chemical equation means number of atoms or ions should be equal in both side (reactant and…
Q: Boron, atomic number 5, occurs naturally as two isotopes, 10B and 11B, with natural abundances of…
A: Isotopes are elements with the same number of protons but differ in the number of neutrons. The…
Q: The radius of a tungsten atom is 137 pm. How many tungsten atoms would have to be laid side by side…
A: Given :- radius of tungsten atom = 137 pm To calculate :- number of tungsten atoms in 1.99 mm
Q: The alkali metals react with water to give hydrogen gas and a metal hydroxide, MOH, where "M" is the…
A: Alkali metals are group 1A elements.
Q: Observations of the reaction between nitrogen gas and hydrogen gas show us that 1 volume of nitrogen…
A: Avogadro's law: the law of definite proportions states that at a constant temperature and pressure…
Locate each of the following elements in the periodic table;
give its name and
a metal, metalloid, or nonmetal: (a) Li, (b) Sc, (c) Ge, (d) Yb,
(e) Mn, (f) Sb, (g) Xe.
Trending now
This is a popular solution!
Step by step
Solved in 4 steps with 1 images
- For each of the following elements, write its chemical symbol,locate it in the periodic table, give its atomic number,and indicate whether it is a metal, metalloid, or nonmetal:(a) chromium, (b) helium, (c) phosphorus, (d) zinc, (e) magnesium,(f) bromine, (g) arsenic.The element oxygen has three naturally occurring isotopes, with 8,9, and 10 neutrons in the nucleus, respectively. (a) write the full chemical symbols for these three isotopes. (b) Describe the similarities and differences between the three kinds of atoms of oxygen.Suppose that mercury forms a perfect spherical droplet with a diameter of 5.0 mm. (a) What is the volume of the mercury droplet in cubic centimeters (cm3)? (b) If the density of mercury is 13.6 g/cm3, calculate the mass of the droplet. (c) How many mercury atoms are present in the droplet? (Volume of sphere = (4/3)3.14r3)
- 3. (a) Magnesium oxide was formed when the metal burns in air. (i) If 1.25 g of magnesium oxide contains 0.754 g of magnesium, determine the mass ratio of magnesium magnesium oxide. (ii) Calculate the weight of magnesium in 534 g of magnesium oxide.The number of protons, neutrons, and electrons, respectively, in the ionic species 209 9Bi* :3+ 83 are: (A) 83, 126, 80; (B) 83, 209, 80; (C) 86, 209, 83; (D) 83, 126, 86;For each of the following elements, write its chemical symbol, locate it in the periodic table, and indicate whether it is a metal, metalloid, or nonmetal: (a) silver; (b) helium; (c) phosphorus; (d) cadmium; (e) calcium; (f) bromine; (g) arsenic.
- For each of the following elements, write its chemical symbol,determine the name of the group to which it belongs (Table 2.3),and indicate whether it is a metal, metalloid, or nonmetal:(a) potassium, (b) iodine, (c) magnesium, (d) argon, (e) sulfur.7. Isotopes. (a) Argon has three naturally occurring isotopes, 36Ar, 38Ar, and 40Ar. What is the mass number of each? How many protons, neutrons, and electrons are present in each? (b) Gallium has two naturally occurring isotopes, 6°Ga (isotopic mass = 68.9256 amu, abundance 60.11%) and 71Ga (isotopic mass = 70.9247 amu, abundance = 39.89%). Calculate the atomic mas of gallium.a %3D (c) Chlorine has two naturally occurring isotopes, 35CI (isotopic mass = 34.9689 amu) and 3"Cl (isotopic mass = 36.9659 amu). If chlorine has an atomic mass of 35.4527 amu, what is the percent abundance of each isotope?Identify each of the following elements as a metal, nonmetal,or metalloid: (a) gallium, (b) molybdenum, (c) tellurium,(d) arsenic, (e) xenon, (f) ruthenium.
- (a) Atoms are very small compared to objects on the macroscopic scale. The radius of a vanadium atom is 131 pm. What is this value in meters and in centimeters? cm (b) The mass of a single vanadium atom is 8.46×10-23 g. Suppose enough V atoms were lined up like beads on a string to span a distance of 44.7 cm ( 18 atoms inches). How many atoms would be required? What mass in grams of V would be used? Could you weigh out this amount of vanadium using a typical laboratory balance? (c) Taking the density of vanadium metal to be 6.08 g/cm³, calculate the mass of metal needed to form a piece of V wire with the same length as the distance in b, but with a diameter of 1.00 mm. Hint: The volume of a cylinder is T times its radius squared times its height. (V = T r² h) How many vanadium atoms does this represent? atoms(a) In the certain hydrated salt MSO34H2O, the mass percentage of H2O is 44.71%.Identify the element M in the salt?(b) A certain element has two naturally occurring isotopes.The mass of one of the isotopes is 106.905 amu and its natural abundance is 51.60%.The mass of the second isotope is 108.883 amu.Calculate the average atomic massWrite the chemical symbols of the isotopes(c) An organic compound consists of carbon, hydrogen and sulfur only.The percentage of carbon by mass in this compound was found to be 30.27%.The complete combustion of 1.367 g this compound produces 1.765 g of sulfur dioxide(SO2) (i) Determine the empirical formula for this compound.(ii) If a sample of this compound having the mass 3.781 × 103 mg contains 9.528 × 10–3 molesof the compound, determine the molecular formulaTwo experiments were conducted: 1.2.750 g of copper(II) oxide, CuO2, was reduced by heating at high pressure with excess hydrogen to yield 2.196 g of copper Cu. 2. 1.179 g of copper Cu was dissolved in nitric acid to yield copper(II) nitrate, which was converted to 1.476 g copper(II) oxide, CuO2, on ignition. Show that the results illustrate the law of definite proportions by calculating the percentage of oxygen in copper(II) oxide in experiments 1 and 2. Express your answers numerically to two decimal places, separated by commas. Do not enter the percent symbol. ▾ View Available Hint(s) Percentage of oxygen in sample 1, sample 2 = copper oxide in the sample 15. ΑΣΦ the second experiment S ?