Chemistry » Page 18

Chemistry

Why does foliation occur? (Metamorphic rock)

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Chemistry

Which property describes a mixture? Check all that apply.

It can be separated by physical methods.

It has a single chemical composition.

It can appear different from different sources.

It cannot be described by a chemical symbol or formula.

It cannot have more than one state of matter.

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Chemistry

Blank is how strong gravity pulls on an object

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Chemistry

A 6.00 g sample of calcium sulfide is found to contain 3.33 g of calcium. what is the percent by mass of sulfur in the compound?

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Chemistry

How are meteorites and meteors different?

Meteorites are found in space and meteors are not.

Meteorites usually burn up in the atmosphere, but meteors do not.

Meteorites are larger than meteors.

Meteorites have struck the Earth's surface, but meteors have not.

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Chemistry

What is the mass (in amu) of a carbon-12 atom? Why is the atomic mass of carbon listed as 12.01 amu in the table on the inside front cover of this book?

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Chemistry

Which metal can replace Cr in Cr2O3

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Kristen Santiago

Chemistry

Which of the following is used for chemical symbols today?

a. drawings

c. letters

b. icons

d. numbers

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Guadalupe Galloway

Chemistry

6 features of a spider

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Chemistry

What two forces are acting on the balloon when it is stuck to the wall and which is stronger?

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Chemistry

In the process of electrolysis, current can flow through a liquid because A. water molecules become negatively charged. B. hydrogen is electrically neutralized in the solution. C. negative ions are attracted to the anode. D. cations of the electrolyte accumulate at the positive electrodes.

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Chemistry

Part 1. A chemist reacted 15.0 liters of F2 gas with NaCl in the laboratory to form Cl2 and NaF. Use the ideal gas law equation to determine the mass of NaCl that reacted with F2 at 280. K and 1.50 atm.

F2 + 2NaCl → Cl2 + 2NaF

Part 2. Explain how you would determine the mass of sodium chloride that can react with the same volume of fluorine gas at STP.

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Maryjane Graham

Chemistry

using the equaation 2h2+o2-->2h2o if 10.0g of hydrogen are used in the presence of excess oxygen how many grams of water will e produced

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Chemistry

How much carbon dioxide is formed from 24.8 g of carbonic acid?

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Chemistry

Formulate the sequence of steps needed to prepare 250.0 mL of a 0.005 M aqueous solution from solid KMnO4 and pure water.

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