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sweet-ann [11.9K]
3 years ago
11

How many neutrons are present in an atom of

Chemistry
1 answer:
Tamiku [17]3 years ago
4 0
There’s going to be 8 neutrons presented
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If you needed to make 100 mL of a 0.2 M fruit drink solution from the 1.0 M fruit drink
telo118 [61]

Answer:

We take 20.0 mL of the 1.0 M fruit drink solution and then add 80.0 mL of water to make 100 mL of a 0.2 M fruit drink solution.

Explanation:

Using the rule that: the no. of millimoles of a solution before dilution is equal to the no. of millimoles of the solution after the dilution. (MV) before dilution = (MV) after dilution. M before dilution = 1.0 M, V before dilution = ??? mL. M after dilution = 0.2 M, V after dilution = 100 mL. ∴ V before dilution = (MV) after dilution / M before dilution = (0.2 M)(100 mL) / (1.0 M) = 20.0 mL. So, we take 20.0 mL of the 1.0 M fruit drink solution and then add 80.0 mL of water to  make 100 mL of a 0.2 M fruit drink solution  

8 0
3 years ago
Write the equation for a rn-224 atom undergoing 1 beta decay: what is the daughter?
gayaneshka [121]

Answer:

Rn-224 --> Fr-224 + beta

Explanation:

Hi

When an isotope of radon 224 undergoes a radioactive decay by emitting a beta particle, an isotope of francium 224 is obtained.

Remember that the first letter of a chemical symbol is written with a capital letter .

Radon: Rn

Francium: Fr

success with your homework

7 0
3 years ago
QUESTION 1
Lisa [10]
B obviously not a or c so if it aint b its D
3 0
3 years ago
Read 2 more answers
What is the pH of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 M? Show your calculation.
Nastasia [14]

Answer:

9.00  

Explanation:

Data:

[H⁺] = 1.0 × 10⁻⁹ mol·L⁻¹

Calculation:

pH = -log[H⁺] = -log(1.0 × 10⁻⁹) = -log(1.0) - log(10⁻⁹) = -0.00 - (-9) = -0.00 + 9 = 9.00

7 0
3 years ago
The process n01 → p11 + β−10 n 0 1 → p 1 1 + β - 1 0 represents a(n) _____.
polet [3.4K]

Answer:

  • <u><em>beta decay</em></u>

Explanation:

The <em>process</em> is represented by the nuclear equation:

  • ^1_0n → ^1_1p+^0_{-1}\beta

Where:

  • n represents a neutron,
  • p represents a proton, and
  • β represents an electron.

The superscripts to the leff of each symbol is the mass number (number of protons and neutrons), and the subscript to the left means the atomic number (number of protons).

Then, in this process a neutron is being transformed into a proton by the emssion of an electron (from inside the nucleus of the atom).

This electron is named beta (β) particle, and the process is called <u><em>beta decay</em></u>, because the neutron is changing into other subatomic particles.

5 0
3 years ago
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