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malfutka [58]
3 years ago
13

Which is a practical application of freezing-point depression?

Chemistry
2 answers:
kramer3 years ago
8 0
 <span>"Depression in freezing point is used to prevent car fuel from freezing by adding anti-freeze." The antifreeze also causes an elevation in the boiling point, so it helped with a car overheating in the summer. In the USA, there was an antifreeze called Prestone that advertised itself as "winder-summer protection." Hope this helped! (:</span>
blondinia [14]3 years ago
3 0

sprinkle salt on ice to make it melt

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Write the balanced equation and draw the particulate representation of the following chemical reaction: sodium metal reacts with
KonstantinChe [14]

Answer:

2Na + Cl2 ------> 2NaCl

4H2O2 --------> 4H2O + 2O2

CH4 + 2O2 -------> CO2 + 2H2O

Explanation:

5 0
3 years ago
Two scientists wrote a paper detailing their research and conclusions and submitted it to a scientific journal. Several months l
avanturin [10]
<span>Two scientists wrote a paper detailing their research and conclusions and submitted it to a scientific journal. Several months later, they received the paper back from the publisher with many comments attached from several fellow scientists. It is either that they revise their study or replicate the study. Most scientists would revisit their work and the findings they had from their research. Most probable if they were successful and the comments of the publisher and the co-scientists were positive they could replicate the study to validate its accountability.<span>
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7 0
4 years ago
N2(g) + 3H2-&gt; 2NH3(g) How many grams of ammonia (NH3) can be produced from the reaction of 28.0 g of N2 and 25.0 g of H2?
Mars2501 [29]

Answer:

34 g of NH₃ were produced in the reaction

Explanation:

N₂ (g)   +  3H₂ (g)  →  2NH₃ (g)

Moles of N₂ → 28 g / 28 g/m = 1 mol

Moles of H₂ → 25g / 2 g/m = 12.5 moles

Clearly, the limiting is the nitrogen.

1 mol of N₂ produced 2 moles of ammonia

So, If I have 1 mol, I'll produce the same amount

2 moles of NH₃ = Mol . Molar mass

2 m  . 17 g/m = 34 g

4 0
3 years ago
The product of the nuclear reaction in which 40Ar is subjected to neutron capture followed by alpha emission is ________. The pr
Orlov [11]

Answer:

37S

Explanation:

Radioactivity is the spontaneous emission of particles and / or electromagnetic radiation by unstable atomic nuclei leading to their disintegration.

We have two main types of radioactivity: radioactive decay and artificial transmutation.

In radioactive decay ( natural radioactivity ), a naturally occurring radioactive element like Uranium-238 disintegrates or decays into more stable isotopes with the emission of particles and/or radiation.

23892U = 23490Th + 42He

Artificial transmutation is the collision of two particles where one particle captures the other used to bombard it. There is subsequent production of isotopes similar or different from the bombarded particle. Neutrons, alpha particles ( helium nucleus ), electrons, protons can be used to bombard elements.

147N + 42He = 178O + 11P

For the above question which is artificial transmutation, the reaction equation is

4018Ar + 10n = 3716S + 42He

So, the neutron capture by Argon-40 will produce a radioisotope Sulphur-37 with the emission of an alpha particle.

5 0
3 years ago
The composition of blood is: 55% plasma, 45% formed elements. 45% plasma, 55% formed elements 50% plasma, 50% formed elements no
n200080 [17]

Answer:

55% plasma, 45% formed elements.

Explanation:

Hope this helps!

5 0
2 years ago
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