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Chemistry

Damarion Powell

How many moles are in 24 grams of FeF3

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Chemistry

Hayden Burns

What happens when:

1) you mix steel and aluminum foil

2) you mix sodium chloride and steel

3) you mix sucrose and steel

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Chemistry

Orlando Stevenson

what is the difference between the orbital model and electron cloud model? explain which one is a better representation?

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Chemistry

Adolfo Briggs

What is corrosion?

what is corrosion of iron called?

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Chemistry

Yoselin Booker

How many joules (J) are needed to increase the temperature of 10.0 g of lead (Pb) from 30 ˚C to 50 ˚C? (Cp for Pb = 0.128 J/g˚C)

25.6 J

38.4 J

64.0 J

102.4 J

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Chemistry

Cruz Gilbert

A solution contains 44.0 ml of benzene in 125 ml of hexane what are the mass % and the volume % of the solution

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Chemistry

Arthur Dean

What is the number of moles of 27.6g of lithium?

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Chemistry

Sharon Wagner

What mineral is not scratched by a fingernail, but is scratched by a copper penny?

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Chemistry

Magdalena Barnes

What type of element is carbon?

Explain your answer

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Chemistry

Guest

4. What is percent error calculation used to determine?

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Chemistry

Justice Dillon

What has a pH level of less than 7?

Acid

Bases

Neutral

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Chemistry

Nico

Which of the following elements is not a metalloid?

A. boron

B. sulfur

C. silicon

D. arsenic

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Chemistry

Isaac Walter

The reaction between elemental phosphorus p4 (s) and o2 (g) to make p4o10 (s) :

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Chemistry

Jayleen Richmond

Glaciation in Alaska is a result of interactions between which of the following "spheres"? Check all that apply.

A. biosphere

B. exosphere

C. geosphere

D. cryosphere

E. atmosphere

F. hydrosphere

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Chemistry

Guest

What is the molar mass of Ca (OH) 2?

a

b

57.008 g/mol

74.092 g/mol

73.080 g/mol

73.088 g/mol

Ос

d

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