Which of the following is a chemical property of vinegar? A. The pH of vinegar is around 2.4. B. Vinegar freezes at around 2°C. C. Vinegar boils at about 100°C. D. The color of vinegar ranges from colorless to brown. E. Vinegar is a transparent liquid.

Answers

Answer 1

Answer: I think the correct answer from the choices listed above is option A. The chemical property of a vinegar is that the pH of vinegar is around 2.4. It tells something about the concentration of hydrogen ions in the solution. The other choices given only describe the physical properties of the substance.

Answer 2

Answer:

Answer:

Explanation:

trust me bro

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Are diamonds flammable?

Answers

A match-head is flammable, but you have to get it up to its ignition temperature first.

A diamond is flammable, but its ignition temperature is astronomical and
totally out of sight.

Diamonds are not flammable, but are combustible, when a diamond burns there is no ash because diamonds are pure carbon and when burned it is turned into carbon dioxide.
:D

Positrons are spontaneously emitted from the nuclei of(1) potassium-37 (3) nitrogen-16
(2) radium-226 (4) thorium-232

Answers

Answer: Option (1) is the correct answer.

Explanation:

A positron is a small particle which contains a +1 charge and its mass is equal to the mass of an electron, that is, $9.109 * 10^(-31)$ kg.

A positron is represent by the symbol $^(0)_(+1)\beta$ .

For example, $^(37)_(19)K \rightarrow ^(37)_(18)Ar + ^(0)_(+1)\beta$

Whereas nitrogen-16 does not decay to give a positron because nitrogen-16 is the daughter isotope formed due to decay of oxygen-16.

The decay reaction is as follows.

$^(16)_(8)O \rightarrow ^(16)_(7)N + ^(0)_(+1)\beta$

And, on radioactive decay of thorium-232 there will be formation of radium-228 along with emission of an alpha particle.

The reaction will be as follows.

$^(232)_(90)Th \rightarrow ^(228)_(88)Ra + ^(4)_(2)\alpha$

Therefore, we can conclude that out of the given options positrons are spontaneously emitted from the nuclei of potassium-37.

Positrons are spontaneously emitted from the nuclei of potassium -37.

Find the [H+] in an acetic acid solution that has a pH of 5.12

Answers

Data:
pH = 5.2
[H+] = ?

Knowing that: (Equation to find the pH of a solution)
$pH = -log[H+]$

Solving:
$pH = -log[H+]$
$5.2 = - log [H+]$
Knowing that the exponential is the opposite operation of the logarithm, then we have:
$[H+] = 10^(-5.2)$
$\boxed{\boxed{[H+] = 6.30*10^(-6)}}\end{array}}\qquad\quad\checkmark$

If you travel from the Earth to the moon, which of the following measurements would change? Mass

Weight

Density

Size

Answers

Assuming you are talking about the individual in space, Size and Weight changes in space due to the difference in gravity. Astronauts grow taller in space due to the micro-gravity they experience out of the earth's atmosphere.

It would not be:
Mass : Because mass is a measurement not dependent on gravity
Density : Astronauts do not blow out in bubbles once they leave the earth's atmosphere, therefore, we can deduct that density stays the same

Your weight - mass is the amount of matter you are made of, therefore that would not change. Weight takes into account the gravitational force of the planet you are on, and as the pull of gravity is different on earth to the moon, your weight would vary.

A solution is highly concentrated if there is:a large volume of solution

a large amount of solvent and a small amount of solute

a large amount of solute and a small amount of solvent

a high density value for the solution

Answers

TO be saturated you need an amount of solvent that will not dissolve anymore into the solution. So, the best answer from the list is C

How could you safely determine if a base is stronger than an acid?

Answers

Combine the two solutions. If the resulting salt is basic, you know the base was stronger. If you end up with an acidic salt, the acid was stronger.

Answer:

B) Use a conductivity apparatus

Explanation:

I got it right on Plato. Strong acids and strong bases will conduct more than weak acids and weak bases, so you can tell if one is stronger than the other by seeing which one conducts more.

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