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Chemistry

How do highland climates differ from polar climates? Highland climates have long summers. Highland climates are localized. Highland climates receive little snow. Highland climates are treeless.

Melissa Norris

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Which substance contains bonds that involved the transfer of electrons from one atom to another? (1) CO2 (3) KBr (2) NH3 (4) Cl2

Whitney Matthews

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Which best explains why a crystal is incompressible? A.Its molecules remain in position without vibrating. B.The molecules of a crystal behave like those of a gas. C.There is little, if any, space left between its adjacent molecules. D.Its molecules switch positions when they are compressed.

Kevin Sutter

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Element A has 15 protons. Determine the number of neutrons in its isotope with mass number 33.

Jodi Brooks

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Which activity is an example of poor personal hygiene

Kyle Mckinney

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Which are structural elements that are unique to dramas? check all that apply?

Amanda Johnson

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What is the mass number of an ion with 109 electrons, 157 neutrons, and a +1 charge?

Zach Chandler

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How many moles of silver chloride are produced from 15.0 mol of silver nitrate?

Jennifer Patterson

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What name should be used for the ionic compound LiI?

Heather Maxwell

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Which is the correct lewis structure for ethylene, c2h4?

Annie Barnes

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Which of the following is a possible Noble gas notation? [Xe] 6s26p6 [Kr] 5s25d85p6 [Xe] 6s25d106p4 [Kr] 5s24d105p6

Ronald Miller

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What is the concentration of alcohol, in terms of molarity, in blood if the bac is 0.08?

Daniel King

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Which of the following mining types can be used to obtain uranium? a. open pit b. underground c. solution d. all of the above

Curtis Rhodes

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Two people must have the same speed and velocity if A) they are walking toward each other at 2 m/s. B) they are walking away from each other at 2 m/s. C) they are jogging side by side at 5 m/s. D) they are jogging to two different destinations.

Samantha Barber

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What chemical substance is used to power cellular activities?

Samantha Barber

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What is the ratio of sodium ions to bromide ions in neutral sodium bromide?

Eric Morgan

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

Cynthia Baker

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What are some non examples of biodiversity

Curtis Rhodes

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Which statement explains why the bonds between non metals tend to be covalent

Kathy Robinson

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John Dalton believed which of the following about atoms? A) Atoms are real even though they're invisible. B) All atoms of a single substance are identical. C) The atom could be divided into smaller parts. D) Atoms of different substances differ by weigh

Ross Pratt

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List the 4 main components of air in their molecular form.

Brandon Scott

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The standard on which the atomic mass unit is based is the mass of a A. proton. B. neutron. C. chlorine-35 atom. D. carbon-12 atom.

Roger Moore

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Which term describes a substance that increases the concentration of hydroxide ions in solution? lewis definition of an acid arrhenius definition of a base bronsted-lowry definition of a base bronsted-lowry definition of an acid

Amanda Johnson

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Which of these solutions has the highest freezing point? a. 1.0 M molecular sucrose (C12H22O11) b. 1.0 M ionic sodium chloride (NaCL) c. 1.0 M ionic calcium bromide (CaBr2) d. 1.0 M ionic potassium chloride (KCI)

Jodi Brooks

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Draw the lewis structure for the molecule ch3ch2cch. how many sigma and pi bonds does it contain?

Justin Parker

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What is the sequence of energy transformations that occur in a nuclear reactor?

Kaitlin Dean

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Which element has a reddish color in a gas and liquid state?

Annie Barnes

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How many moles of atoms are in 7.00 g of carbon 13 a b c d?

Ralph Lopez

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What is one of the ways a fission reaction can get out of control?

Mindee Nelson

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What is the mass of 3.8 × 1024 atoms of argon (Ar)?Explain how you do it please.

Heather Maxwell

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A narrow channel or slab of a mineral that is different from the surrounding rock is called a a. vein. b. solution. c. crystal. d. metal.

Kristi Hammond

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Water will act as a Brønsted-Lowry acid with which of the following molecules? NH3 H2S HCN CH3COOH

Zach Chandler

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Which products would form if chlorine gas was bubbled through a solution of sodium bromide? Na and BrCl Na and BrCl2 NaCl and Br2 Na(Cl)2 and Br2

Amanda Johnson

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4. The cloud of interstellar dust and gas that forms a star is known as

Kyle Mckinney

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Which lists all of the substances that appear in equilibrium constant expressions?

Timothy Norman

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Pentacarbonyliron(0) (fe(co)5) reacts with phosphorous trifluoride (pf3) and hydrogen, releasing carbon monoxide: fe(co)5+2pf3+h2→fe(co)2(pf3)2(h)2+3co if 6.0 g of fe(co)5 reacts with 4.0 g of pf3 and 4.0 g of h2, which is the limiting reagent?

Theresa Perry

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A 30.0-mL sample of 0.165 M propanoic acid is titrated with 0.300 M KOH. 1. Calculate the pH at 5 mL of added base. 2. Calculate the pH at one-half of the equivalence point. (Equivalence point is 8.96) 3. Calculate the pH at 20 mL of added base.

Victoria Fowler

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Compared to pure water, an aqueous solution of calcium chloride has a (1) higher boiling point and higher freezing point (2) higher boiling point and lower freezing point (3) lower boiling point and higher freezing point (4) lower boiling point and lower freezing point

Curtis Rhodes

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Which is a property of most nonmetallic solids? (1) high thermal conductivity(2) high electrical conductivity(3) brittleness(4) malleability

Dana Keller

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Which of the following types of mixtures exhibit the Tyndall effect? a. solutions c. colloids b. suspensions d. none of the above

Whitney Matthews

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Which is the noble-gas notation for lead (Pb)? [Rn]6s24f145d106p2 [Rn]6s25d106p2 [Xe]6s24f145d106p2 [Xe]6s25d106p2

Donald Ward

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When a substance freezes, it changes from the liquid phase to the solid phase because of its _____. A.molecular bonding B.intermolecular bonding C.compactness D.ability to fit the shape of its container

Samantha Barber

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Which words list the correct order of activated neurons in a reflex arc?

Zach Chandler

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Write the complete balanced equation for the decomposition of calcium hydroxide (Ca(OH)2).

Eric Morgan

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What is the ground state configuration of Cr2+, Cu2+ and Co3+?

Bethany Evans

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What is the shape of the molecule shown in the image? A bent B tetrahedral C trigonal pyramid D linear Download png

William Cain

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Organisms do not adapt as a result of competition for resources. Please select the best answer from the choices provided T F

Jodi Brooks

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