Chemistry, 20.01.2021 07:40 landonp101
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Does a more expensive brand of dog food cause dogs to live longer? IV: and DV: Hypothesis:
Does a person’s heart rate influence how long a person will live? IV: DV: Hypothesis:
Does napping during the day affect how many hours a person sleeps at night? IV: DV: Hypothesis:
Does a person with a family history of breast cancer have a higher chance of developing breast cancer during her life? IV: DV: Hypothesis:
Does grass grow faster under the shade of a tree or in the direct sunlight? IV: DV: Hypothesis:
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Chemistry, 22.06.2019 01:30
If 34.2 grams of lithium react with excess water, how many liters of hydrogen gas can be produced at 299 kelvin and 1.21 atmospheres? 2 li (s) + 2 h2o (l) yields 2 lioh (aq) + h2 (g)
Answers: 3
Chemistry, 22.06.2019 03:00
Select all that apply. a beta particle: is electromagnetic energy is an electron has zero charge is emitted from the nucleus has a +2 charge has a -1 charge
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Chemistry, 22.06.2019 06:00
An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have
Answers: 2
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