Which of these changes would be classified as producing a chemical change a. freezing water b. mixing salt and water to make a s
olution c. heating cooking oil d. mixing a acid and a base to make a salt
1 answer:
Answer:
Option B , Option C and Option D
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Answer:
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Explanation:
Answer: Simpe its 1
Explanation:I took that quiz before hope this helps :)
- <u>Methane</u><u> </u><u>have</u><u> </u><u>4</u><u> </u><u>covalent</u><u> </u><u>bond</u><u>.</u><u> </u>
- <u>One</u><u> </u><u>carbon</u><u> </u><u>form</u><u> </u><u>bond</u><u> </u><u>with</u><u> </u><u>4</u><u> </u><u>hydrogen</u><u> </u><u>bond</u><u> </u><u>because</u><u> </u><u>carbon</u><u> </u><u>need</u><u> </u><u>4</u><u> </u><u>valence</u><u> </u><u>electron</u><u> </u><u>to</u><u> </u><u>complete</u><u> </u><u>it's</u><u> </u><u>octet</u><u>.</u><u> </u>
- <u>Carbon</u><u> </u><u>has</u><u> </u><u>4</u><u> </u><u>valence</u><u> </u><u>electron</u><u>.</u><u> </u><u>It</u><u> </u><u>need</u><u> </u><u>4</u><u> </u><u>electron</u><u> </u><u>to</u><u> </u><u>complete</u><u> </u><u>it's</u><u> </u><u>octet</u><u> </u><u>so</u><u> </u><u>it</u><u> </u><u>form</u><u> </u><u>bond</u><u> </u><u>with</u><u> </u><u>4</u><u> </u><u>hydrogen</u><u> </u><u>bond</u><u>.</u><u>And</u><u> </u><u>hydrogen</u><u> </u><u>has</u><u> </u><u>1</u><u> </u><u>valance</u><u> </u><u>electron</u><u> </u><u>so</u><u> </u><u>they</u><u> </u><u>easily</u><u> </u><u>complete</u><u> </u><u>the</u><u> </u><u>octet</u><u> </u><u>and</u><u> </u><u>form</u><u> </u><u>covalent</u><u> </u><u>bond</u><u>.</u><u> </u>
Answer:
Explanation:
x in (-oo:+oo)
2 < (1/2)*x-3 // - (1/2)*x-3
2-((1/2)*x)+3 < 0
(-1/2)*x+2+3 < 0
5-1/2*x < 0 // - 5
-1/2*x < -5 // : -1/2
x > -5/(-1/2)
x > 10
x in (10:+oo)
(10:+oo)
Answer:
the limiting reagent is butane
Explanation:
5C₄H₁₀ + 25O₂ → 20CO₂ + 5H₂0