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Macy
Chemistry
Select two options from the following list that qualify as types of pure substances. a substance an atom an element a particle matter a compound
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Seamus Weeks
Chemistry
If a human cell were to increase the amount of cholesterol embedded within its plasma membrane, which of the following would most likely happen
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Buffalo
Chemistry
Which of these do scientists use to study the world around them?
1. Hypothesis
2. Inductive reasoning
3. Scientific method
4. Deductive reasoning
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Kathryn Irwin
Chemistry
Calculate the mass of nickel metal which will react with 25mL of 0.15mol/L (
hydrochloric acid to produce nickel (II) chloride. 0.110625g
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Guest
Chemistry
Is a landslide an example of erosion or weathering
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Darren Atkinson
Chemistry
How much is in one star
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Luca Marquez
Chemistry
How many grams of oxygen can be produced from the decomposition of 100. g of kclo3?
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Salas
Chemistry
If a solution has a hydronium ion concentration of 1x10^-9 m the solution is
a) acidic and has a pH of 5
b) basic and has a pH of 9
c) basic and has a pH of 5
d) acidic and has a pH of 9
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Westie
Chemistry
Consider the reaction xM + yN _ products
This reaction was run 10 times with different volumes of the two reactant solutions and the temperature change was measured. The two solutions have the same concentration and the total volume mixed together for all 10 reactions was the same. The reaction that had the largest temperature change was the one when 26.4 mL of M were mixed with 6.6 mL of N. What is the value of the coefficient x in the balanced equation? Enter your answer as an integer.
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Sergio
Chemistry
You do not know an object's velocity until you know its what?
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Paddy
Chemistry
What substances that are not normally found in filtrate?
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Kyler
Chemistry
Which properties cause chemical reactions?
A. Neither chemical or physical properties
B. Physical Properties
C. Chemical Properties
D. Chemical and Physical properties
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Sexton
Chemistry
Beware of this when swimming near shore
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Gretchen Raymond
Chemistry
What are the four peices of matter
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Parker Clements
Chemistry
An aqueous is the same as liquid water?
true
false
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