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MaRussiya [10]
2 years ago
15

Which sentences describe alpha particles? Check all that apply 1. Alpha particles consist of two protons and two neutrons 2. Alp

ha particles consist of a negatively charged electron emitted by a nucleus 3. Alpha particles are produced during alpha decay 4. Alpha particles are produced during beta decay 5. Alpha particles release energy.
answers: 1,3,5 on ed-genuity ...good luck!!
Chemistry
2 answers:
-BARSIC- [3]2 years ago
5 0

<u>Answer:</u> The correct answer are Option 1, Option 3 and Option 5.

<u>Explanation:</u>

Alpha particles are released when a nucleus undergoes alpha decay process. The alpha particle released carries a charge of +2 units and has a mass of 4 units.

The charge of this particle will determine the number of protons present in this particle which are 2 and the mass will determine the number of neutrons in this particle.

Number of neutrons = Mass number - Number of protons

Number of neutrons = 4 - 2 = 2

This particle also releases energy with itself.

Hence, the correct answer are Option 1, Option 3 and Option 5.

Masja [62]2 years ago
4 0

thanks for the answers ッ. (btw they’re on the bottom of the question if anyone doesn’t see it.

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The pOH of a solution is 6.0. Which statement is correct? Use p O H equals negative logarithm StartBracket upper O upper H super
Katen [24]

Answer:

The pH of the solution is 8.

Explanation:

To which options are correct, let us determine the concentration of the hydroxide ion, [OH-] and the pH of the solution. This is illustrated below:

1. The concentration of the hydroxide ion, [OH-] can be obtained as follow:

pOH = –Log [OH-]

pOH = 6

6 = –Log [OH-]

–6 = Log [OH-]

[OH-] = Antilog (–6)

[OH-] = 1x10^–6 mol/L

2. The pH of the solution can be obtained as follow:

pH + pOH = 14

pOH = 6

pH + 6 = 14

pH = 14 – 6

pH = 8.

From the calculations made above,

[OH-] = 1x10^–6 mol/L

pH = 8.

Therefore, the correct answer is:

The pH of the solution is 8

3 0
2 years ago
These little bunnies (A, B, and C) were born in the same litter to the same parents, but they have different traits for the feat
marta [7]

Answer:

Due to random assortment and incomplete dominance of alleles.

Explanation:

The bunnies end up with ear thicknesses that are different from one another due to random assortment of alleles during gamete formation according to Mendel.

In addition to random assortment, the allele for thick ear also displayed what is known as incomplete dominance over the allele for thin ear to arrive at an average ear thickness.

3 0
2 years ago
A student wants to prepare a 1.0-liter solution of a specific Molarity. The student determines that the mass of the solute needs
Mars2501 [29]
The answer is (4) Add enough solvent to 30.0 g of solute to make 1.0 L solution. The molarity is calculated using volume of the solution. When solute dissolving, the total volume will change. So the final volume of solution need to be 1.0 L.
4 0
2 years ago
What is the total E associated with one mole of photons (a unit known as the Einstein) of 3.91x1019 Hz?
sashaice [31]

Answer:

        E=1.56\times 10^{10}J

Explanation:

The<em> energy of a photon</em>, E, can be calculated with the Planck-Einstein equation:

          E=hf

Where:

  • h is Planck's constant 6.626×10⁻³⁴ J.s, and
  • f is the frequency of the photon or electromagnetic radiation.

Substituting with your data:

          E=6.626\times 10^{-34}J.s\times 3.91\times 10^{19}s^{-1}=2.5908\times 10^{-14}J

Now multiply by Avogadro's number to obtain the energy of one mole of photons:

          E=2.5908\times 10^{-14}J\times 6.022\times 10^{23}=1.56\times 10^{10}J

8 0
2 years ago
The values used in the scale of pH and pOH are derived from a system designed by ______. Gordonsen Sorenson Curie Dalton
yaroslaw [1]

Sorenson

Explanation:

The values used in the scale of pH and pOH are derived from a system designed by Sorenson. Søren Peter Lauritz Sørensen, a Danish chemist introduced the system of pH and pOH for describing the alkalinity and acidity of substances.

  • The pH and pOH scale is logarithmic scale that ranks the acidity and bascity of compounds.
  • pH is the negative logarithm of the concentration of  hydrogen/hydroxonium ions in solution i.e

              pH = -log₁₀{H⁺]

  • pOH is the negative log of the concentration of the hydroxyl ions in a solution i.e

             pOH = -log₁₀{OH⁻]

Learn more:

calculating pH: brainly.com/question/12985875

pH scale: brainly.com/question/11063271

#learnwithBrainly

3 0
2 years ago
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