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Chemistry
Deven Russell
Element X and element Y have a difference in electronegativity of 1:2 will the bond XY be covalent or ionic
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Chemistry
Abbie Walters
What is the empirical formula
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Chemistry
Julio Valenzuela
What is the phase of matter that has no fixed volume and no fixed shape?
Solid
Gas
Liquid
Frozen
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Chemistry
Jimmy
Which of the following determines the strength of the force and gravity between two objects? choose all that apply
A) the speeds of the objects
B) the masses of the objects
C) the distance between the objects
D) the volume of the objects
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Chemistry
Casey
The opposite of vaporization
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Chemistry
Kiley Bentley
6.8. Liquid methyl ethyl ketone (MEK) is introduced into a vessel containing air. The system temperature is increased to 55°C, and the vessel contents reach equilibrium with some MEK remaining in the liquid state. The equilibrium pressure is 1200 mm Hg. (a) Use the Gibbs phase rule to determine how many degrees of freedom exist for the system at equilibrium. State the meaning of your result in your own words. (b) Mixtures of MEK vapor and air that contain between 1.8 mole% MEK and 11.5 mole% MEK can ignite and burn explosively if exposed to a flame or spark. Determine whether or not the given vessel constitutes an explosion hazard.
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Chemistry
Donovan Townsend
What is the pH of a solution that has a H + concentration equal to 1.7 x 10-5 M?
5.20
0.22
10.20
4.77
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Chemistry
Gianni Sharp
4 Compared to the energy and charge of the electrons in the first shell of a Be atom, the electrons in the second shell of this atom have
(1) less energy and the same charge
(2) less energy and a different charge
(3) more energy and the same charge
(4) more energy and a different charge
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Chemistry
Allison Howard
Chemical systems in nature tend to undergo changes toward
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Chemistry
Konner Mosley
What energy drives the rock cycle that makes it work?
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Chemistry
Zoey
Who wants to hang out?
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Chemistry
Karlee English
Atoms whose outermost energy level is not filled may gain or lose valence electrons. What do you call these atoms?
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Chemistry
Catalina
Which group 7 element has the most least for electrons
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Chemistry
Isla Price
How are elements organized in the periodic table
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Chemistry
Trace Castro
What is the molarity of solution prepared by dissolving 11.75 g of KNO3 in enough water to produce 2.00 L of solution?
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