History, 13.11.2020 03:20 joynerjaila
Walt tests his hypothesis that the chemical reaction between an acid and a
base always releases heat. When he mixes vinegar and baking soda, the
material becomes colder. What should Walt do next?
A. Conclude that something was wrong with one of the compounds
B. Revise his hypothesis and test other acids and bases
C. Decide that this is not a reaction between an acid and a base
D. Report that the hypothesis is useless because it made an incorrect
prediction
please help, i’ll mark brainliest if you get it right! please please only answer if you know the answer though, don’t guess i’m taking a test and i can’t fail as it’s the last one before the quarter ends ( tomorrow ) id appreciate it!! thank youuu
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Nationalsim led to major conflicts following world war1 especially when
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Why were americans concerned about the future of north and south america? check all of the boxes that apply. they worried that european countries would take over independent countries in latin america. they thought that european nations could threaten democracy in the united states. they believed that europe would never again return to the americas.
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The u.s. government has three branches: executive, judicial, and legislative. each branch plays a different role in making sure laws are passed, enforced, and applied fairly in accordance with the united states constitution. which idea does this scenario best represent?
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Walt tests his hypothesis that the chemical reaction between an acid and a
base always releases hea...
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