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Anika [276]
3 years ago
10

Which substance is an example of an element?

Chemistry
2 answers:
kaheart [24]3 years ago
6 0

It is B. I took the test!!

Gnoma [55]3 years ago
4 0
Copper is an element. An element is a substance that is entirely made from one type of atom.
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A weight of 100 pounds moved a distance of 12 feet equals 120 240 1200 ft.-lbs. of work.
Archy [21]
Work = Fdcos(alpha)

Where F is force, D is distance, and Alpha is the angle to the parallel plane (in this case the ground)

I’ll assume alpha is 0 since it’s not given

100 • 12 • cos(0) = 1200 ft-lbs
3 0
3 years ago
Please help!!!!!!!!!!
scZoUnD [109]

Answer:

<h2>true</h2>

yes, friend it is positive

4 0
2 years ago
Durante una determinación de acidez en una muestra contaminada, agregas como indicador fenolftaleina y torno a violeta. ¿Qué sus
algol13

Answer:

HCl, ya que la sustancia es una base que se debe titular con un ácido.

Explanation:

¡Hola!

En este caso, teniendo en cuenta la descripción inicial de la sustancia, la cual se torna violeta cuando se le agrega la fenolftaleína, es posible inderir que esta sustancia es una base con pH básico. Ahora bien, en torno a la especificación de un proceso de titulación, es claro que dicha base debe ser titulada con un ácido, y este caso, con HCl, ácido chlorhídrico, con el fin the alcanzar el punto de equivalencia.

¡Saludos!

6 0
3 years ago
This is the SI unit for force meter liter Newton m/s/s
morpeh [17]

The newton is the SI unit for force; it is equal to the amount of net force required to accelerate a mass of one kilogram at a rate of one meter per second squared. Newton's second law of motion states: F = ma, multiplying m (kg) by a (m/s 2 ).

I don't understand your question, but I think that would help.

4 0
3 years ago
9. To become like a noble gas the element P will have a charge of
MrRa [10]

Answer:

to become a noble gas element P will have 2 electrons in it's outer most energy level if it has one energy level

and eight in the last energy level if more than one

6 0
3 years ago
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