Chemistry » Page 24

Chemistry

Shannon Richardson

Scientific notation of 230

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Chemistry

Victor Adkins

If an element has an atomic number of 20 and a mass number of 41, what is the:

Number of protons? c) Number of electrons?

Number of neutrons? d) Complete symbol?

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Chemistry

Ty

What electron subshell is being filled for the rare earth series of elements on the periodic table? What electron subshell is being filled for the actinide series?

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Chemistry

Ana Peterson

Is (NH4) 2 a ionic compound

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Chemistry

Ellen Mercer

Given the equation zn (s) + 2 hcl (aq) → zncl2 (aq) + h2 (g), what mass of hydrogen gas is produced when 2.8 g zn is reacted with excess aqueous hydrocholric acid?

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Chemistry

Dallas Lewis

Ionic bonds form when electrons are-

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Chemistry

Oswaldo Lewis

What is a fault? Explain the characteristics of the three types of fault.

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Chemistry

Abril Hensley

Name the element that has atoms with the same electronic structure as sulfur ion

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Chemistry

Piglet

Hazardous waste recycling facilities will only collect batteries.

True

False

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Chemistry

Guest

What does a compound always have

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Chemistry

Amiya Hensley

The charge of a beryllium-9 nucleus is

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Chemistry

Loosetooth

A chemistry student needs 60.0 g of tetrahydrofuran for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the student discovers that the density of tetrahydrofuran is 0.889g*cm^-3. Calculate the volume of tetrahydrofuran the student should pour out.

Be sure your answer has the correct number of significant digits.

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Chemistry

Rayna Stark

A discharging lead acid battery is best described as

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Chemistry

Kenny Shah

Which two elements occur in nature as liquids?

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Chemistry

Tara Sanders

In a solution of carbon dioxide in water (a soft drink) the carbon dioxide is the solute. True or False?

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