Chemistry » Page 98

Chemistry

Solomon Harrington

Which phrase best discribes wave motion

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Chemistry

Tiffany

What type of weathering effects granite

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Chemistry

Javion Leblanc

Which temperature change indicates an increase in the average kinetic energy of the molecules in a sample? 15°C to 298 K 37°C to 273 K 305 K to 0°C 355 K to 25°C

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Chemistry

Clinton Simon

Aqueous hydrochloric acid reacts with aqueous sodium sulfite to produce aqueous sodium chloride and aqueous sulfurous acid. Write a balanced chemical equation for this reaction.

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Chemistry

Nash Bray

Currently, radioactive waste is:

A) not harmful

B) primarily from fusion reactors

C) buried underground

D) recycled and reused

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Chemistry

Lewis Dominguez

1.6A A landowner wants to spray herbicide on a field that has an area of 2050 m². The

herbicide comes in bottles that hold 16 fluid ounces (fl oz), and 1.5 fl oz mixed with 1 gal

of water will treat 300 ft?. How many bottles of herbicide will the landowner need? Draw a

road map to show how you planned the solution.

dicoborced into a lake in New

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Chemistry

Ryder Weiss

At elevated temperatures, BrF5 establishes the following equilibrium. 2 BrF5 (g) ⇋ Br2 (g) + 5 F2 (g) The equilibrium concentrations of the gases at 1200°C are 0.011 M for BrF5, 0.635 M for Br2, and 0.854 M for F2. Calculate the value of Kc. Enter a number to 2 decimal places.

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Chemistry

Myles Barr

two mugs of hot chocolate are sitting on the counter Josh adds to whole marshmallows to one mug Josh add small pieces of two marshmallows the other mug which marshmallow dissolve faster

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Chemistry

Brendan Huerta

How much energy must be removed from a 125 g sample of benzene (molar mass = 78.11 g/mol) at 425.0 K to liquify the sample and lower the temperature to 335.0 K? The following physical data may be useful. Hvap = 33.9 kJ/molHfus = 9.8 kJ/molCliq = 1.73 J/g CCgas = 1.06 J/g CCsol = 1.51 J/g CTmelting = 279.0 KTboiling = 353.0 Ka. 95.4 kJ

b. 74.4 kJ

c. 38.9 kJ

d. 67.7 kJ

e. 54.3 kJ

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Chemistry

Odin Zhang

Differentiate concentrated acid from dilute acid.

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Chemistry

Julissa Roach

Which best defines a pioneer species?

a species that enters an area and makes its own food

a species that enters a community that is stable and balanced

the first species to populate an uninhabited area

the first species that eats other organisms in an area

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Chemistry

Brodie Krause

A prokaryote is most likely to use which of the following modes of metabolism to release energy if it is in an environment without oxygen, dies when when exposed to oxygen, and uses fementation

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Chemistry

Guest

Which atom attracts electrons more strongly?

cesium (Cs)

bromine (Br)

Which atom loses an electron more readily?

sodium (Na)

chlorine (Cl)

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Chemistry

Alfredo Mejia

A 50 gram sample of a radioisotope undergoes 2 half-lives. How many grams

would remain at the end? Explain.

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Chemistry

Dork

What does the reaction rate say about a reaction?

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