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likoan [24]
4 years ago
9

How does the molecular motion of a sustance change when it goes from liquid to solid?

Chemistry
1 answer:
lawyer [7]4 years ago
5 0

Answer:

B) The molecules gain energy, and their relative motion decreases

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NASA continues to plan and conduct several missions to study
Tom [10]

Answer:

other planets and moons in the solar and beyond

Explanation:

NASA aims to find other planets and moons in our solar system, study them comparatively to earth and see if there's a possibility of been colonized by humans.

5 0
3 years ago
Which acid or base (along with its corresponding salt) should be used to generate a buffer solution with pH around 3.5
Ipatiy [6.2K]

Answer:

Formic acid

Sodium formiate

Explanation:

To determine acid or base that can generate a buffer solution with pH around 3.5, we have to think in the acid whose pKa = pH.

Although we have to also think in buffer capacity, a measure which can cause a change of 1 pH unit in 1 L of solution.

Buffer capacity does not only depend on the concentration of its components but also of the relationship between that concentrations.

When pH = pKa, buffer capacity is maximum which means that the concentration of conjugated species is the same and the ability to oppose pH changes is maximum.

One example with pH = pKa or nearly if:

COOH⁻  + Na⁺ →  NaCOOH

HCOOH  +  H₂O  →  COOH⁻  + H₃O⁺     Ka: 1.8×10⁻⁴

pKa = 3.74

3 0
3 years ago
How does a computer's ability to perform so many calculations in a very short time affect how people communicate (pls help)
xeze [42]

Answer:

A computer's ability to perform so many calculations in a very short time affects how people communicate by stopping them from talking actually. We no longer talk verbally. We don't go out and socialize, we always talk from the phone or text. We have lost our inner touch with talking.

Explanation:

7 0
3 years ago
What are some two interesting questions you have about constellations?
jok3333 [9.3K]

Answer:

What are the 12 major constellations?

What is the largest constellation?

Explanation:

5 0
3 years ago
Read 2 more answers
How many grams of water are produced by reacting 15.8 g H2 with excess oxygen
pantera1 [17]
<span>2H2 + O2 ---> 2H2O this is it i think<??</span>
6 0
3 years ago
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