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ChemistryChemistry
Kaeden Deleon
It is snowing where Jenna lives. It's been snowing all day, but now the snow has changed to sleet and then to freezing rain. What is happening to cause these changes?
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ChemistryChemistry
Salma Navarro
Liquid sample a has a higher vapor pressure than liquid sample b (both in closed containers). what can be said about sample a compared with sample b?
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ChemistryChemistry
Alyvia Ritter
A neutral atom has high electronegativity.

Describe what happens to this atom during ionic bond formation?
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ChemistryChemistry
Parker Small
Which daughter element is produced from the beta decay of 89/36 kr
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ChemistryChemistry
Mayra Jimenez
What is "change" when we are talking about natural and physical systems?

A.

Information that has been proven to be true

B.

Repeated processes that are used in a variety of ways

C.

A process for using knowledge and skills to acquire new knowledge

D.

A variable or alteration to one part that affects an entire system
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ChemistryChemistry
Schaefer
1. The sum of the pH and the pOH must always be equal to a constant value. What is the numerical constant?
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ChemistryChemistry
Tess
What concentration of the lead ion, pb2+, must be exceeded to precipitate pbf2 from a solution that is 1.00*10-2 m in the fluoride ion, f-? ksp for lead (ii) fluoride is 3.3*10-8?
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ChemistryChemistry
Skittles
Calculate the temperatureoC that 0.2 moles of gas in a

balloon at 2.0 atmoccupies 2.0 L.
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ChemistryChemistry
Tristian Pratt
How does the molecular count support the idea of a nucleotide as a subunit
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ChemistryChemistry
Keshawn Dougherty
Explain how will you know the mass of the water in your experiment?
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ChemistryChemistry
Zion Juarez
Convert 5 moles H2O to liters
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ChemistryChemistry
Genevieve Combs
How many moles of sulfur atoms are in 2.408 x 10^24 atoms sulfur?
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ChemistryChemistry
Tanya Maynard
According to Rutherford, what does the nucleus contain?
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ChemistryChemistry
Janiah Conley
When is alpha particle emission most likely to occur?

A. When the nucleus has more than 83 protons.

B. When the ratio of neutrons to protons in the nucleus is too high to be stable. C. When the nucleus has a mass of more than 83 amu.

D. When the ratio of neutrons to protons in the nucleus is not exactly balanced.
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ChemistryChemistry
Elliana Clay
What object is being acted on by balanced forces?

A. A snowflake that falls and lands on a roof

B. A skateboard that rolls increasingly faster down a hill

C. A baseball that rolls to a stop in a field

D. A car that moves at a constant speed in one direction
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