All categories

4 years ago

An atom of 118Xe contains___ neutrons?A) 118 B) 54 C) 64 D) 172 E) 110

Chemistry

1 answer:

aleksandrvk [35]4 years ago

4 0

Answer:

An atom of ¹¹⁸Xe contains 64 neutrons.

Explanation:

Number of Protons:

The number of protons present in any atom are equal to the atomic number of that particular atom. Hence, as the atomic number of Xenon is 54 therefore, it contains 54 protons.

Number Neutrons:

The number of neutrons present in atom are calculated as,

# of Neutrons = Atomic Mass - # of protons

As given,

Atomic Mass = 118

# of Protons = 54

So,

# of Neutrons = 118 - 54

# of Neutrons = 64

You might be interested in

Acetaldehyde (CH3CHO) undergoes a Wolf-Kishner reaction, which is the addition of hydrazine (H2NNH2) with subsequent addition of

Anarel [89]

Answer:

Reduced, alkane

Explanation:

Wolf-Kishner reaction is a type of reduction reaction in which aldehydes and ketones are reduced to their corresponding alkane in the presence of a base.

This reaction occurs at high temperature.

Alkane formed has a same number of carbon as aldehyde and ketone.

If acetaldehyde undergoes a Wolf-Kishner reaction in the presence of base and heat, then ethane is formed. Nitrogen is formed as a byproduct.

Here, acetaldehyde is reduced to form ethane.

So, acetaldehyde undergoes a Wolf-Kishner reaction, which is the addition of hydrazine with subsequent addition of a base and heat. In this reaction, the aldehyde is reduced, resulting in alkane product.

6 0

3 years ago

Name the following compound:

postnew [5]

I don't know yaaarrrrrrrrrrrrrrrr

8 0

4 years ago

which has more kinetic energy, a 5-kg object moving at 5 m/s 1 m off the ground or a 5-kg object at rest 2 m off the ground?

irina1246 [14]

Answer:

Explanation:

Kinetic energy is the energy due to changes in position of a body. It is always with regards to motion of a body.

Potential energy on the other hand is the energy at rest of a body.

To estimate kinetic energy, we use the formula:

K.E = $\frac{1}{2}m v^{2}$

where m is the mass of the body and v is the velocity of the object.

mass is 5kg and velocity is 5ms⁻¹

K.E = $\frac{1}{2}5 x 5^{2}$

K.E = 62.5J

for the object at rest;

potential energy is calculated:

P.E = mgh

where m is the mass, g is the acceleration due to gravity and h is the height

m is 5kg, h is 2 and g is 9.8

P.E = 5 x 9.8 x 2 = 98J

The moving object has kinetic energy with the object at rest having potential energy.

4 0

3 years ago

Atoms in the same _____ of the periodic table share the same chemical properties

Mila [183]

I'm taking the same quiz. The answer is column

5 0

4 years ago

When dinitrogen pentaoxide, a white solid, is heated, it decomposes to produce nitrogen dioxide gas and

AysviL [449]

9.5314 L is the volume of nitrogen dioxide formed at 103.25 kPa and 22.75 °C.

<h3>What is an ideal gas equation?</h3>

The ideal gas law (PV = nRT) relates the macroscopic properties of ideal gases. An ideal gas is a gas in which the particles (a) do not attract or repel one another and (b) take up no space (have no volume).

Given data:

Oxygen produced - 1.618 gram

Decomposition of $N_2O_5$ takes place.