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Chemistry

Isai Lowery

2 H2 (g) - > 2 H2O (g)

Calculate the mass of oxygen gas, O2, required to produce 12.90 moles of water, H20

Molar mass H2 = 2.016 g/mol

Molar mass O2 = 32.00 g/mol

Molar mass = 18.02 g/mol

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Chemistry

Holmes

What element must combine with the metal for oxidation to take place?

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Chemistry

Reese Stanley

Which of the following explain the variations in solubility for methane, ethane, and ethylene?

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Chemistry

Martha Clay

Describe how birds and reptiles both reproduce. describe two ways that birds and reptiles differ. use two particular animals as example in your description

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Chemistry

Goonie

Substances that are likely to disassociate in water

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Chemistry

Alyssa Hansen

An atom has 10 protons, ten neurons and ten electrons. What is the mass of that atom in u unit?

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Chemistry

Kirsten Becker

What is the total energy change for the following reaction: CO + H2O - > CO2 + H2?

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Chemistry

Elena Woodward

Planet one two elements are?

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Chemistry

Talan Mendoza

Which substance can be decomposed by chemical means?

(1) tungsten (3) krypton

(2) antimony (4) methane

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Chemistry

Lillian

Chemical equations are used to model

A.

chemical reactions.

B.

rates of reactions.

C.

molecular structures.

D.

physical changes.

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Chemistry

Jaidyn Horton

What is an astronomical unit?

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Chemistry

Edith Compton

Na2O + HCl - > NaCl + H2O

Does this equation satisfy the Law of Conservation of Matter? Why or why not?

A) Yes, since there are 5 reactant atoms and 5 product atoms.

Eliminate

B) Yes, since there is a subscript of 2 on both sides on the equation.

C) No, since there are two sodium atoms as reactants, but only one sodium atom as a product.

D) No, since there is a liquid and a solid as reactants, but a gas and a solid as a product

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Chemistry

Nico Mckay

At constant temperature, if a gas occupies 312 mL at a pressure of 1.60 atm, what pressure is necessary for this gas to occupy a volume of 500 mL?

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Chemistry

Lailah Mejia

The correct formula for silver sulfide is?

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Chemistry

Kaiya Paul

What is habitat?

A. The way an animal behaves.

B. The place where an animal lives.

C. The role an animal plays.

D. The group of animals in an area.

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