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rusak2 [61]
3 years ago
15

Write a scientific argument that addresses the question: Which suspect is most likely to have made the hydrofluoric acid? First,

state your claim. Then, use evidence to support your claim. For each piece of evidence you use, explain how the evidence supports your claim. As you write, refer back to your completed Modeling Tool sheets and Science Seminar Evidence Cards.
We need 2 reasons why its either Pat or Tracy. I need a paragraph on it.
ILL GIVE BRANLIEST TO THE BEST ANSWER THATS A PARAGRAPH AND GIVES 2 REASONS WHY ITS EITHER PAT OR TRACY!!

Chemistry
1 answer:
aniked [119]3 years ago
7 0

Answer:

Pat is most likely to have made the hydrofluoric acid.

Explanation:

How is hydrofluoric acid made?

It is manufactured by heating purified fluorspar (calcium fluoride) with concentrated sulfuric acid to produce the gas, which is then condensed by cooling or dissolving in water. ... The acid hydrolysis of fluorite-containing minerals generates an impure gas stream consisting of sulfur dioxide, water and HF.

that's all I got sorry

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H20 (s) -&gt; h20 (g)<br> endothermic or exothermic
noname [10]

Answer:

Endothermic.

Explanation:

Hello there!

In this case, it is necessary to keep in mind that exothermic processes are characterized by the release of energy and the endothermic processes by the absorption of heat. In such a way, every process from solid to liquid or gas is endothermic as they require energy to separate the molecules and therefore turn out in the phase change. On the other hand, every process from gas to liquid or solid is exothermic as heat is released to rejoin the molecules and produce the phase change.

Therefore, since solid water molecules tend to be well-arranged, it is necessary to add heat to the system to produce the phase change until gas; in such a way, this process is endothermic as energy must be absorbed by the ice.

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3 0
3 years ago
When a solution of ethanol (C2H5OH) is formed in water, the ethanol molecules 1. form hydrogen bonds to the polar water molecule
Lunna [17]

Answer: form hydrogen bonds to the polar water molecules.

Explanation:

5 0
3 years ago
A compound contains 75% carbon and 25% hydrogen by mass. What is the empirical formula for this compound?
timama [110]
The empirical formula would be CH4.


“To get the empirical formula of the compound, we convert each mass percentage to mole percentage by dividing each to corresponding molar mass. 75% mass of carbon is 6.25 while 25% hydrogen is 25. We divide 25 by 6.25, we get 4. Hence, the empirical formula is CH4.”
6 0
3 years ago
Read 2 more answers
The reduction of iron(III) oxide to iron during steel-making can be summarized by this sequence of reactions: 2C(s) +02 (g) ----
belka [17]

Answer:

K = [Fe]4×[CO2] / [Fe2O3]2 × [C]6 × [O2]3

Explanation: the over all reaction is

2Fe2O3(s) + 6C(s) + 3O2(g) ---> 4Fe(I) + 6CO2 (g)

So equilibrium constant equals, product concentration/ reactant concentration.

K = [Fe]4×[CO2] / [Fe2O3]2 × [C]6 × [O2]3

4 0
3 years ago
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kenny6666 [7]

Answer :

-111°C

Hope it helps

4 0
2 years ago
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