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Which of these changes is an example of a physical change? A. sodium creates an explosion when added to water B. an indicator changes color when it is added to an acid C. dry ice changes into a gas when

Paul Jackson asked Sep 27, 2024

by Paul Jackson

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Consider two processes: sublimation of I₂(s) and melting of I₂(s). (Note: the latter process can occur at the same temperature but somewhat higher pressure.) I₂(s) → I₂(g), I₂(s) → I₂(l) The process in

Vahid Haratian asked Sep 27, 2024

by Vahid Haratian

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What happens to the motion between water molecules when liquid water transforms to a solid? a. Hydrogen bonds are broken. b. Atoms in the liquid water move more slowly. c. Atoms in the liquid water move

Cletus Ajibade asked Sep 27, 2024

by Cletus Ajibade

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The partial hydrogenation of commercial vegetable oils converts some double bonds into bonds, leading to health problems. Which type of bonds are formed during this process? A) Saturated B) Unsaturated

Artoby asked Sep 27, 2024

by Artoby

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Indicate which aqueous solution has the fastest evaporation rate. a. 0.1MNaBr b. 0.1MCH 3OH c. 0.1MBaCl 2 d. 0.2MK 3PO 4 e. 0.2MNaF

Fatih Acet asked Sep 27, 2024

by Fatih Acet

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5 votes

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The nurse is preparing to administer 30 mEq of liquid potassium chloride (KCl) to an adult client. The label on the medication bottle reads 40 mEq of KCl per 15 mL. The nurse should prepare how many milliliters

Sonu Kapoor asked Sep 27, 2024

by Sonu Kapoor

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Describe the characteristic properties of acids as reactions with metals, bases, carbonates

PandasRocks asked Sep 27, 2024

by PandasRocks

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1 vote

194k views

Why is there no isotactic or syndiotactic form ofpolyethylene?

Ppolv asked Sep 27, 2024

by Ppolv

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1 vote

30.7k views

Butyric acid is responsible for the odor in rancid butter. A solution of 0.25 M butyric acid has a pH of 2.71. what is the Ka for the acid? Can you please show me how to set this up with an ICF/ICE table.

Xxjjnn asked Sep 27, 2024

by Xxjjnn

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0 votes

25.6k views

What are the definitions of "Affinity" and "Intrinsic Activity"? A) Affinity: Attraction or kinship; Intrinsic Activity: Essential or inherent behavior B) Affinity: Hostility or aversion; Intrinsic Activity:

Bergrebell asked Sep 27, 2024

by Bergrebell

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4 votes

191k views

What do you notice about the group number and the number of valence electrons?

Ifross asked Sep 27, 2024

by Ifross

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151k views

If you assume this rate of decomposition remains constant, how many minutes will it take for the entire sample of CaCO₃ to decompose?

David Siegel asked Sep 27, 2024

by David Siegel

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What bonds exist in the 3D structure of a peptide backbone?

Jojo Joseph asked Sep 27, 2024

by Jojo Joseph

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1 vote

8.8k views

Select the correct answer. Which unit is commonly used to measure density? A. gcm3 B. g/cm3 C. cm3/g D. g/cm

Yogeesh H T asked Sep 27, 2024

by Yogeesh H T

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If the mass of analyte is 10.40 grams, what is the mass % of acetic acid in the analyte?

Alexey Usharovski asked Sep 27, 2024

by Alexey Usharovski

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1 vote

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A chemical formula is shown. what do the subscripts in a chemical formula represent? select TWO answers. ★ the number of atoms. ★ C = 1, H = 6, O = 5 ★ C = 6, H = 6, O = 1 ★ the number of molecules.

Torben G asked Sep 27, 2024

by Torben G

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110k views

A___is a charged particle because it has more or fewer electrons than protons. When an atom___an electron, it becomes a positively charged ion. When an atom___an electron, it becomes a negatively charged

Gustek asked Sep 27, 2024

by Gustek

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214k views

Ammonia reacts with hydrochloric acid form ammonium chloride in solution: NH₃ + HCl forms NH₄Cl If 100.0ml of 2.01 M NH₃ is added to 60.00ml of 1.03M HCl, what is the concentration of NH₄Cl in the final

BeeNoisy asked Sep 27, 2024

by BeeNoisy

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3 votes

207k views

Consider the following thermochemical equation: C(s) + O₂(g) → CO₂(g) AH = -393 kJ CO(g) + ¹/²2O₂(g) → CO₂(g) AH = -294 kJ What is the enthalpy change for the following related thermochemical equation

MIPB asked Sep 27, 2024

by MIPB

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In the combustion reaction of octane (C₈H₁₈) in air, the energy of the product water and carbon dioxide is lower than that of the reactants. This means that the reaction ΔHrxn is

Heavyd asked Sep 27, 2024

by Heavyd

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4 votes

176k views

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