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Chemistry

How much of the rock cycle can be observed directly? How much must be inferred? Think about both how long things take to happen in the cycle as well as where different parts of the cycle occur. Refer to specific parts of the cycle in your answer.

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Chemistry

How are elements arranged in the Periodic Table?

A.

by their properties

B.

alphabetically

C.

by how much they are worth

D.

in the order they were discovered

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Chemistry

If an iron nail is placed in a glass of water the nail will sink. Is the density of iron smaller than or larger than the density of water? explain

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Chemistry

What is made when salt is dissolved in water?

A a precipitate

B a mixure

C a solution

D a compound

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Chemistry

What type of electromagnetic waves does the human eye see as the colors red blue or green

A Visible light waves

B Radio waves

C infrared waves

D microwaves

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Chemistry

10. What is the molarity of a MnO4 - solution if 23.5 mL of this solution is required to react completely with 30.0 mL of 0.134 M Fe2 solution according to the equation 5Fe2 (aq) MnO4 - (aq) 8H (aq) - --> 5Fe3 (aq) Mn2 (aq) 4H2O (l)

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Chemistry

What is the percentage of carbon in 5.00 g of sucrose

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Emmalee Oconnor

Chemistry

Nonrenewable energy resources include what types of energy?

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Chemistry

What are the terms used to describe a location on a sanddun?

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Chemistry

5. What is the major difference between the two-dimensional and three - dimensional models of ethane and methane? When might you choose to use a two-dimensional model rather than a three-dimensional model when representing one of the molecules?

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Chemistry

Calculate the molarity of the solution. Use the periodic table if necessary. A salt solution with a volume of 250 mL that contains 0.70 mol NaCl.

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Chemistry

How much energy is required to heat 32.5 g of water from 34°C to 75°C

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Chemistry

are laundry detergent (contains blue & white crystals) solutions, suspension, or mechanical mixture?

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Chemistry

When 0.873 grams of a protein were dissolved in 48.6 mL of solution at 15.6 degrees C, the osmotic pressure was found to be 0.061 atm. Calculate the molar mass of the protein.

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Chemistry

Density of water at 28 degrees

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