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Chemistry

Sienna Frank

When this element was discovered, it exhibited luster and malleability, and it reacted very vigorously with water. This element is never found as a free element in nature and always exists in a compound. To which group does this element most likely belong?

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Chemistry

Chaya Rodriguez

What group in the periodic table contains only metals

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Chemistry

Small

How many neutrons are in selenium - 36?

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Chemistry

Adrian

What are three facts about the carbon family

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Chemistry

Marques Stevenson

Which characteristic might identify a substance as an Arrhenius base?

A) It contains an OH group.

B) It contains hydrogen ions.

C) It forms halogens.

D) It will react with other bases.

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Chemistry

Rolando

The combining of hydrogen and oxygen gas into liquid water is an example of what kind of change?

A. Phase

B. Chemical

C. Physical

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Chemistry

Dottie

Explain evaporation. have a chapter test tommarow!

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Chemistry

Guest

When the system is at equilibrium, it contains NO 2 at a pressure of 0.817 atm, and N 2 O 4 at a pressure of 0.0667 atm. The volume of the container is then reduced to half its original volume. What is the pressure of each gas after equilibrium is reestablished

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Chemistry

Taniyah Dyer

Which statement best describes the role of the sun in creating wind? Question 2 options: The rays of the sun push the air in all directions, creating wind The radiation of the sun reacts with water over the ocean The energy of the sun heats the land and water surfaces unevenly, creating wind The energy of the sun directly heats the gases in Earth's atmosphere, creating wind

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Chemistry

Gringo

Write the formula for a complex formed between zn2 and nh3, with a coordination number of 3.

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Chemistry

Emelia Brady

Gloria is writing the chemical formula for a compound using its chemical name. She has just identified the names of the elements in the compound. What tool will she use next?

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Chemistry

Braydon Oneal

Warm-Up

A 206-gram bar of iron has sunlight shining on it. Initially, its temperature is 24.7°C. As it gains 1,070.79 joules of energy, its

temperature rises to 36.2°C. Calculate the specific heat capacity of the iron bar using the formula Q = mCAT.

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Chemistry

Janiyah Kaufman

Was the rock pulled apart, pushed together, or did it slide past another rock to make this formation what type of fault is this

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Chemistry

Camille Shelton

What is Chronatography

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Chemistry

Leslie Adams

Which of these describes an endothermic reaction?

-Energy is absorbed by the reaction.

-Energy is released by the reaction.

-Energy is created in the reaction.

-No energy is transferred by the reaction.

What is the answer?

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