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yKpoI14uk [10]
2 years ago
5

Write the formula for an isotope of oxygen with nine neutrons, including the mass number and the atomic number. Write the answer

in the form XZA using the atomic symbol button in the toolbar, where A is the mass number, Z is the atomic number, and X is the chemical symbol for the unknown element.
Chemistry
1 answer:
Mumz [18]2 years ago
7 0

The formula for an isotope of oxygen with nine neutrons, including the mass number and the atomic number is 17/8 O.

<h3>What is an isotope?</h3>

Isotope is any of two or more forms of an element where the atoms have the same number of protons, but a different number of neutrons within their nuclei.

This means that atoms of isotopes will have the same atomic number but a different mass number.

According to this question, an isotope of oxygen has 9 neutrons. If oxygen has an atomic number of 8, the formula of this particular isotope is as follows: 17/8 O.

Learn more about isotopes at: brainly.com/question/12955625

#SPJ1

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What is the thinnest type of crust?
Trava [24]
The correct answer is oceanic crust, 80 km, Hope this helps let me know.
8 0
3 years ago
What are the moles of gas are in a 30 liter scuba canister if the temperature of the canister is 300 K and the pressure is 200 a
Lady_Fox [76]

Answer:

n = 243.605

Explanation:

Given

Pressure, P = 200\ atm

Temperature, T = 300k

Volume, V = 30L

Required

Calculate the number of moles

We'll apply the following formula to solve this question

n = \frac{pV}{RT}

Where

R = 0.0821 L\ atm/(mol\ K)

The above equation is an illustration of the ideal gas law

Substitute values for p, V, R and T in:

n = \frac{pV}{RT}

n = \frac{200 * 30}{0.0821 * 300}

n = \frac{6000}{24.63}

n = 243.605

<em>Hence, there are 243.605 moles</em>

7 0
3 years ago
How much heat is needed to raise the temperature of water with mass of 27.0 g at 20.0°C to 45.0°C?
ohaa [14]

Answer:

2835 J

Explanation:

Take the specific heat capacity of water as 4.2 J/ g°C.

Energy (heat) = mass x specific heat capacity x change in temperature

(E= mcΔT)

E = 27 x 4.2 x (45-20)

E = 2835 J

7 0
3 years ago
Draw the curved arrow mechanism for the formation of an acetal from acidic methanol and 4-methylpentan-2-one in the fewest steps
morpeh [17]

Answer:

See explanation below

Explanation:

This reaction is known as Ketone hydrolisis in acid medium. This involves the formation of an hemi cetal, and then, the acetal. This is often used to convert ketones or aldehydes in ethers.

The first step involves the reaction with the acid. The carbonile reacts with the acid and forms an alcohol there. The next step is the reaction of the alcohol, in this case, the methanol to form the hemi cetal. Then in the third step, we repeat the first step, using acid to turn the OH group into a great leaving group such water. Then the water leaves the molecule, leaving the space wide open in the next step for methanol, and the acetal is formed.

See picture for the curved arrow mechanism

7 0
3 years ago
1
klemol [59]

Answer:

D. Saline

Explanation:

coz it's saline

7 0
3 years ago
Read 2 more answers
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