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cestrela7 [59]
3 years ago
10

Your little sister asks you a scientific question: "Does chocolate milk come from brown cows?" In order to answer the question,

you decide to form a hypothesis.
Explain whether or not the following statements are effective hypotheses.

i. Brown cows produce chocolate milk. (1 point)

ii. Brown cows never produce chocolate milk. (1 point)

iii. Brown cows produce white milk. (1 point)
Chemistry
1 answer:
aksik [14]3 years ago
5 0

Answer:

Hey there,

Your answer is iii. Brown cows produce white milk. (1 point) <u>and</u> ii. Brown cows never produce chocolate milk. (1 point)

You already know from the basic understanding that chocolate comes from beans, not cows, and is added to milk, and thereby- brown cows do not produce chocolate milk. You also know that they produce white milk.

Wbob1314

if you have any questions I <em><u>INSIST</u></em> you ask them in the comments.

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RATE LAW QUESTION !
vivado [14]
In general, we have this rate law express.:

\mathrm{Rate} = k \cdot [A]^x [B]^y
we need to find x and y

ignore the given overall chemical reaction equation as we only preduct rate law from mechanism (not given to us).

then we go to compare two experiments in which only one concentration is changed

compare experiments 1 and 4 to find the effect of changing [B]
divide the larger [B] (experiment 4)  by the smaller [B] (experiment 1) and call it Δ[B]

Δ[B]= 0.3 / 0.1 = 3

now divide experiment 4 by experient 1 for the given reaction rates, calling it ΔRate:

ΔRate = 1.7 × 10⁻⁵ / 5.5 × 10⁻⁶ = 34/11 = 3.090909...

solve for y in the equation \Delta \mathrm{Rate} = \Delta [B]^y

3.09 = (3)^y \implies y \approx 1

To this point, \mathrm{Rate} = k \cdot [A]^x [B]^1

do the same to find x.
choose two experiments in which only the concentration of B is unchanged:

Dividing experiment 3 by experiment 2:
Δ[A] = 0.4 / 0.2 = 2
ΔRate = 8.8 × 10⁻⁵ / 2.2 × 10⁻⁵ = 4

solve for x for \Delta \mathrm{Rate} = \Delta [A]^x

4=  (2)^x \implies x = 2

the rate law is

Rate = k·[A]²[B]
6 0
3 years ago
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Answer:

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Explanation:

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Answer:

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Explanation:

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Is sodium chloride a mixture, element, or compound
algol13
A pure substance consists of a single element or compound<span>. Iron is formed only of iron (Fe) atoms; table salt is formed only of </span>sodium chloride<span> (</span>NaCl) molecules. Amixture<span>, however, is made up of different compounds and/or </span>elements<span>.</span>
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Juliette [100K]

Answer:

so whats the question?

Explanation:

4 0
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