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Chemistry

Which of the following is not a rock? a. granite b. shale c. marble d. diamond

Timothy Norman

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Which of the following resources in natural, biotic, and exhaustible? A. Silk b. Forests c. Minerals b.water

Ronald Miller

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Study Figure 10-3. How much nitrogen-14 will be produced from a 200-g sample of carbon-14 after 17,190 years? 20. An artifact contains one-fourth as much carbon-14 as the atmosphere. How old is the artifact? Use Figure 10-3 to answer this question.

Curtis Rhodes

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Why are liquids well suited for hydraulics?

Ross Pratt

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1: Write balanced complete ionic equation for NaOH(aq)+HNO3(aq)?H2O(l)+NaNO3(aq) 2? Write balanced net ionic equation for Na3PO4(aq)+NiCl2(aq)?Ni3(PO4)2(s)+NaCl(aq) 3? Write balanced complete ionic equation for Na3PO4(aq)+NiCl2(aq)?Ni3(PO4)2(s)+NaCl(aq)

Kyle Mckinney

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Which of the following describes nuclear fission? A. An electron is ejected when a neutron becomes a proton. B. A high-energy gamma ray is released from a nucleus. C. A parent element splits into two daughter elements. D. Two separate nuclei are joined to become one nucleus.

Kevin Sutter

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Which metal is more active than NI and less active than Zn? 1. Cu 2. Cr 3. Mg 4. Pb

Kevin Sutter

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In the end, businesses that use teams tend to have ______. a. Fewer sick leaves b. More profits c. More management d. Fewer products

Tara Andrews

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A saturated straight-chain hydrocarbon with two carbons is ____.

Carlton Burgess

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What is a base used in toothpaste? sorbitol carrageenan magnesium hydroxide sodium lauryl sulfate

Kyle Mckinney

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By which of the following features is Venus characterized? A. It is the nearest planet to the sun. B. It has a dense atmosphere of mostly carbon dioxide. C. It has a very thin atmosphere because of the solar wind. D. It is much larger than the Earth.

Bethany Evans

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Which of the following solutions will not neutralize a weak base solution of pyridine (C5H5N)? vinegar ammonia carbonated soda drink pickle juice

James Washington

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What causes the difference in bond angles in carbon dioxide and water? A) the distance between the atomsin either molecules B) the facr that there are tei oxygen atoms in carbon dioxide and only one in water C) the fact that the number of lone pairs of electrons on the central atom is greater in the case of water D) the presence of a carbon atom in carbon dioxide E) the presence of a hydrogen atom in water

Kevin Sutter

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Which describes a precipitate in a chemical reaction? A. a gaseous reactant that forms aqueous products B. a solid reactant that forms aqueous products C. a gaseous product formed from aqueous reactants D. a solid product formed from aqueous reactants

Theresa Perry

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What is the ratio of ions needed to produce neutral potassium chloride?

Roger Moore

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What is the term for the dissolving medium in a solution? A.) solvent B.) solute C.) solvator D.) emulsifier

Nicholas Rivera

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Which is MOST LIKELY a solid at room temperature? A) chlorine B) hydrogen C) neon D) potassium

Karen Wright

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Which of the following has the longest life a dwarf star a giant star a supernova or the sun.

Victoria Fowler

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What information can you get from a station model?

Samantha Barber

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Which type of force is found between difluorine (F2) molecules? A Ionic bonding B Dipole-dipole interaction C London dispersion forces D Hydrogen Bonding

Theresa Perry

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Calculate the temperature, in k, of 2.20 moles of gas occupying 3.30 l at 3.50 atm.

Ronald Miller

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What is typically displayed on the y-axis of a solubility curve?

Deborah Edwards

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Which type of biochemical is shown in the diagram? polysaccharide nucleic acid lipid dipeptide Download jpg

Timothy Norman

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How many structures are possible for a octahedral molecule with a formula of ax4y2?

Jessie Thompson

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A _____reaction is a process by which atoms change their ion charge. displacement redox substitution combustion

Cynthia Baker

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A 0.500 l solution of 6 m hcl has to be made. how much 12 m hcl is needed?

Kaitlin Dean

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Two atoms with an electronegativity difference of 0.4 form a bond that is 1. ionic, because electrons are shared 2. ionic, because electrons are transferred 3. covalent, because electrons are shared 4. covalent, because electrons are transferred

Ronald Miller

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Which bond pair does not have a polar covalent bond? A. P – Cl B. B. O – H C. S – Cl D. H – Cl E. E. Cl - Cl

Justin Parker

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Which of the following is not an example of a polymer? Select one: a. Polystyrene b. Nylon c. Sucrose d. PVC

Ronald Miller

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Which equation illustrates conservation of mass

Amanda Johnson

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Which of the following would most likely contain a fossil? intrusive igneous rock extrusive igneous rock chemical sedimentary rock organic sedimentary rock

Daniel King

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Copper is an example of a(n) A. renewable resource. B. gemstone. C. consumption resource. D. nonrenewable resource

Kristi Hammond

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Which pair of atoms has the highest electronegativity difference? Na-F Ca-F H-F C-F F-F

Rodney Fox

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A type of graph suited to show change over time

Dana Keller

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Which best describes ionization energy? energy needed to add an electron to a neutral atom in the gas phase energy needed to add an electron to a neutral atom in the liquid phase energy needed to remove an electron from an atom or ion in the gas phase energy needed to remove an electron from an atom or ion in the liquid phase

Curtis Rhodes

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Consider the following balanced reaction between hydrogen and nitrogen to form ammonia: 3H2(g) + N2(g)→2NH3(g) How many moles of NH3 can be produced from 24.0 mol of H2 and excess N2?

Karen Wright

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The formation of which product(s) will most likely be observed in a combustion reaction? an oxide one element and one compound an element two ionic compounds

Ramon Kelly

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1) The elements most likely to form more than one type of ion are the ______. A) transition metals. B) alkali metals. C) halogens. D) alkaline earth metals. 2) The name iron(11) indicates that a compound contains _______. A) iron ions with an 11+ charge. B) iron ions with a 2+ charge. C) iron ions with a negative charge. D) two types of iron ions.

Mindee Nelson

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Solutes usually dissolve best in cold solvents. please select the best answer from the choices provided t f

Ross Pratt

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How was the work of Newlands similar to that of Mendeleev on the periodic table?

Karen Wright

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Which characteristics of metal atoms help explain why valence electrons in a metal are delocalized? Metal atoms are large and have high electronegativities. Metal atoms are small and have low electronegativities. Metal atoms are large and have low electronegativities. Metal atoms are small and have high electronegativities.

Kristi Hammond

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PLEASE HELP I WILL GIVE YOU 50 POINTS Which of the following aqueous solutions will have the lowest vapor pressure at 25°C? 1.5 M C6H12O6 1.5 M LiNO3 1.0 M Al2O3 1.0 M CaF2

Rodney Fox

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In a solution of salt and water, which component is the solute? A. salt B. water C. beaker D. oxygen

Karen Wright

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How is mass defect determined?

Deborah Edwards

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What is the weight in grams of 1 mole of ammonium sulfate (NH4)2SO4?

Bethany Evans

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Which radioisotope is used as a tracer in nuclear scanning? carbon -14 uranium-238 technetium-99m iodine-129

Jennifer Patterson

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Which is most likely why many scientists reject the cold fusion theory? There is too much waste involved in the process. Cold fusion experiments have been conducted at room temperature only. The process does not produce enough energy to meet the needs of modern humans. The original results have not been replicated consistently and reliably.

Kristi Hammond

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Which of the following statements is not accurate in regard to the first four energy levels? A. The third energy level can hold a maximum of 18 electrons. B. The fourth energy level is the only energy level to hold an f sublevel. C. An orbital can hold a maximum of two electrons. D. The first energy level has 1 p orbital

Dana Keller

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