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lubasha [3.4K]
3 years ago
15

The gas used to fill party ballons contain only helium atoms .This make helium a(n).

Physics
2 answers:
KengaRu [80]3 years ago
8 0

the anser on apex is element



Nata [24]3 years ago
5 0

a gas

hope this is right

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Explanation:

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Answer 1-8 please <br> Thanks
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The answers are as follows:
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2. C
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3. B.
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4. A
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5. A
Chemical symbol refers to the one or two letters which are used to represent a particular element. Chemical symbols are derived in a variety of ways. The chemical symbols make it possible for one to recognize an element quickly and to write it in an abbreviated form when writing chemical equations.
6. A.
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6 0
3 years ago
Which of these phrases would go in the overlap? Select two options. A Venn diagram shows the similarities and the differences of
tangare [24]

Answer:

Found in the nucleus, Has mass of one amu

6 0
3 years ago
A certain pair of slits are separated by a distance d. Monochromatic coherent light falls on this pair of slits and the interfer
DanielleElmas [232]

Answer:

The new separation distance between adjacent bright fringes will be <u>4 mm</u>

Explanation:

Since, the distance between adjacent bright fringes is given by the formula:

Δx₁ = λL/d = 2 mm  -------- eqn (1)

where,

Δx = Distance between adjacent bright fringes

λ = wavelength of light = constant for both cases

L = Distance between the slits and the screen

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Now, for the second case:

Slit Separation = d/2

Therefore,

Δx₂ = λL/(d/2)

Δx₂ = 2(λL/d)

using eqn (1), we get:

Δx₂ = 2 Δx₁

Δx₂ = 2(2 mm)

<u>Δx₂ = 4 mm</u>

5 0
3 years ago
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