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Chemistry

Fellow

A sample of neon gas has a volume of 2.85 L and a temperature of 15 °C, under a constant pressure. What is the new temperature (in °C), if the volume is decreased to 1.45 L?

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Chemistry

Mikaela Harris

Which type of chemical reaction occurs in Ca+CI2 CaCI2

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Chemistry

Kennedy Silva

Which of the following organisms are carnivores?

Producers

Omnivores

Consumers

Decomposers

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Chemistry

Jakobe Wall

What is the number of moles in 2.33 L of H2S gas at STP?

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Chemistry

Desmond

Nitrous oxide (n2o), or laughing gas, is commonly used as an anesthetic in dentistry and surgery. how many moles are present in 8.4 liters of nitrous oxide at stp?

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Chemistry

Heidy Mathis

How can an atom be electrically neutral when it contains particles that are charged?

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Chemistry

Amirah Oconnell

Is boiling water considered physical or chemical bond

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Chemistry

Ray

Which of the following is the correct scientific notation for 0.000451 g?

4.5 x 10-3

4.5 x 10-5

4.51 x 10-4

45.1 x 10-4

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Chemistry

Mandi

A phase change from a solid to a gas is called what

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Chemistry

Deja Levy

What is hydrocarbon?

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Chemistry

Macie Werner

Why did most scientists reject Wegner's theory for nearly a half century?

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Chemistry

Baron Neal

Define prediction and explain how it is used to formulate a hypothesis.

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Chemistry

Bridger Benitez

A group of organisms that breed and produce offspring that can breed.

A. Species

B. ecosystem

C. Biodiversity

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Chemistry

Wendy Schaefer

What is the molality of a solution containing 100 grams of glucose (C6H12O6, molar mass = 180 g/mol) dissolved in 2.5 kg of water?

0.22 m

72 m

7200 m

40 m

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Chemistry

Lorenzo Bowman

A battery is constructed based on the oxidation of magnesium and the reduction of cu2+. the initial concentrations of mg2 + and cu2 + are 1.2*10-4 m and 1.44 m, respectively, in 1.0-liter half-cells. how long can the battery deliver 5.33 a before going dead?

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