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Degger [83]
3 years ago
15

Why are some mystery elements easier to identify than other?

Physics
2 answers:
Annette [7]3 years ago
8 0
<span>"Some elements give distinctive colors to their salts, so you can usually identify them just by looking."</span>
dezoksy [38]3 years ago
3 0
Bc it depends on the elements some are easier and some are not
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I’m confused on this worksheet can someone help
Finger [1]

Answer:

well for C the horse is at rest at 10 to 15

D is 0 to 10

E is 15 to 25

Explanation:

If you search up examples it will help with this worksheet.

If I am work then I appologize

5 0
3 years ago
What is the acceleration of a car moving
Iteru [2.4K]

Answer: Accelaration is 2.77 m/s*s

<h2 />

Explanation:

V0=0km/h=0m/s

V1=100 km/h=27.7 m/s

t=10s=

Use equation for accelaration : a=(V1-V0)/t

a=(0m/s-27.7m/s)/10s

a=-27.7s/10s

a=2.77m/s*s

6 0
4 years ago
A sample of a gas has a volume of 52 l at a pressure of 1.2 atm. what volume will the gas occupy if the pressure is changed to 0
Shtirlitz [24]
<h2>Equation of state of an ideal gas</h2>

<em>The </em><em>ideal gas law is derived</em><em> from the ga</em><em>s laws of Boyle, Charles, Gay Lussac and General.</em>

To solve this exercise, we obtain the data of the exercise:

  • V₁ = 52 Lt
  • P₁ = 1,2 atm
  • P₂ = 0.75 atm
  • V₂ = ¿?

<em>The general formula of the </em><em>Equations of state of an ideal gas is:</em>

<h3>P₁V₁=P₂V₂, Where</h3>
  • P₁ = Initial pressure
  • V₁ = Initial volume
  • P₂ = End Pressure
  • V₂ = Final Volume

We clear the formula, since it is the value that we must calculate.

<h3>V₂ = P₁V₁ / P₂</h3>

To solve, we substitute our data in the formula; and we solve

<h3>V₂ = (1,2 atm)·(52 Lt) / 0.75 atm</h3><h3>V₂ = 0.832 Lt</h3>

Answer:<em> The </em><em>volume that the gas will occupy</em><em> if the pressure increases to 0.75 atm is </em><em>0.832 lt.</em>

<h2>See more about this at:</h2><h3>brainly.com/question/15907283</h3>
3 0
2 years ago
Are photons causing the electrons to flow off of the target? ( the target is calcium)
Sliva [168]

Answer:

The energy lost by the atoms is given off as an electromagnetic wave. ... even if it's not very intense, will always cause electrons to be emitted.

Explanation:

5 0
3 years ago
I need some help on this
lord [1]

Answer: A balloon provides a simple example of how a rocket engine works. The air trapped inside the balloon pushes out the open end, causing the balloon to move forward. The force of the air escaping is the "action"; the movement of the balloon forward is the "reaction" predicted by Newton's Third Law of Motion.

Explanation: ur welcome

8 0
4 years ago
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