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4 years ago

Elements are identified by the number of

1 answer:

6 0

The simplest way to use the periodic table to identify an element is by looking for the element's name or elemental symbol. The periodic table can be used to identify an element by looking for the element's atomic number. The atomic number of an element is the number of protons found within the atoms of that element.

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5.1169 mol of Ne is held at 0.9148 atm and 911 K. What is the volume of its container in liters?

sveticcg [70]

By applying the Boyle's equation and substituting our given data the volume of the container was found to be 418.14 Litres

<h3>Boyle's Law</h3>

Given Data

number of moles of Ne = 5.1169 mol

Pressure = 0.9148 atm

Temperature = 911 K

We know that the relationship between pressure and temperature is given as

PV = nRT

R = 0.08206

Making the volume subject of formula we have

V= nRT/P

Substituting our given data to find the volume we have

V = 5.1169*0.08206*911/0.9148

V = 382.522353554/0.9148

V = 418.14 L

Learn more about Boyle's law here:

brainly.com/question/469270

5 0

2 years ago

A fan blade rotates with angular velocity given by ωz(t)= γ − β t2, where γ = 5.20 rad/s and β = 0.810 rad/s3 . calculate the an

Gnesinka [82]

Answer : The angular acceleration is $\alpha=-\beta t=-0.810\text{ t}$

Solution : Given,

$\gamma=5.20rad/s$

$\beta=0.810rad/s^3$

The given angular velocity equation is,

$\omega_z(t)=\gamma-\beta t^2$

At t = 0, $\omega_z(0)=\gamma$

At t = t, $\omega_z(t)=\gamma-\beta t^2$

Angular acceleration : It is defined as the rate of change of angular velocity with respect to time.

Formula used for angular acceleration :

$\alpha=\frac{\omega_z(t)-\omega_z(0)}{t}$

where,

$\alpha$ = angular acceleration

$\omega_z(t)$ = angular velocity at time 't'

$\omega_z(0)$ = angular velocity at time '0'

t = time

Now put all the given values in this formula, we get the angular acceleration.

$\alpha=\frac{(\gamma)-(\gamma-\beta t^2)}{t}$

$\alpha=-\beta t=-0.810\text{ t}$

Therefore, the angular acceleration is $\alpha=-\beta t=-0.810\text{ t}$

5 0

3 years ago

Based on the octet rule, nitrogen most likely forms a __ion.

Greeley [361]

Answer:

b) N3-

Explanation:

The octet rule stipulates that a chemical specie is stable if it has eight electrons in its outermost shell.

Nitrogen belongs to group 15. This means that it has five electrons in its outermost shell. The formation N3- means that it accepted three electrons.

This brings the total number of outermost electrons to eight in accordance with the octet rule.

4 0

3 years ago

Which type of change, chemical or physical, is a change on the atomic level?

zavuch27 [327]

Explanation:

Examples of chemical changes include, rusting, fire, and overcooking. Nuclear changes occur when the nuclei of atoms are rearranged to form new atoms. Examples of nuclear changes include atomic fission, nuclear fusion, and the energy of sun and stars.

3 0

3 years ago

Read 2 more answers

When hydrochloric acid and zinc were combined, the flask was sealed and thus no gas could escape from the flask. why did the pre

JulijaS [17]

When hydrochloric acid and zinc were combined, the salt zinc chloride and hydroge gas are being produced in the flask. The flask was said to be sealed and, therefore, no gas could escape from the flask. As the temperature decreases, the pressure inside would decrease since the gas would have lower kinetic energy and would have less force to exert on the walls of the flask. This is also evident from the equation PV = nRT. As we can see pressure and temperature are directly related which means as one decreases, the other decreases as well or as one increases, the other would increase accordingly.

7 0

4 years ago

Read 2 more answers