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Natalija [7]
3 years ago
6

A student is designing a device that can be used for communication. Which TWO waves on the electromagnetic spectrum should the s

tudent use?
gamma rays

X-rays

ultraviolet waves

microwaves

radio waves
Chemistry
2 answers:
34kurt3 years ago
7 0

X rays and radio waves

never [62]3 years ago
4 0

Answer:

Explanation:

the answer would be x rays and radio waves

srry if im wrong

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Which statement related to particle and wave properties of matter is correct? a. Interference patterns are observed when a wave
DerKrebs [107]

Answer:

a. Interference patterns are observed when a wave passes through a barrier with two slits

Explanation:

Interference is a situation where two waves superimpose to form a new wave of a different amplitude. This amplitude can be greater, same or lower.

the diagram attached below shows the movement of a wave through a barrier with two slits.

you can notice the portions of the wave that overlap. This overlapping of waves is the interference.

Thus, option A is correct.

The other options however,  are not correct. as shown below:

Option B is wrong as waves exhibit diffraction <em>(it is diffraction of the light wave that produces the rainbows we see in the sky)</em>

Option C is wrong as waves do not travel straight through slits always.

Option D is wrong as waves can also interfere constructively and destructively.

7 0
4 years ago
What is the molecular formula of a compound with the empirical formula so and molecular weight 96.13?
garik1379 [7]
<h3>Answer:</h3>

                  Molecular Formula  =  S₂O₂  (Disulfur Dioxide)

<h3>Solution:</h3>

Molecular formula is calculated by using following formula,

                    Molecular Formula  =  n × Empirical Formula  ---- (1)

Also, n is given as,

                     n  =  Molecular Weight / Empirical Formula Weight

Molecular Weight  =  96.13 g.mol⁻¹

Empirical Formula Weight  =  32.06 (S) + 16.0 (O)  =  48.06 g.mol⁻¹

So,

                     n  =  96.13 g.mol⁻¹ ÷ 48.06 g.mol⁻¹

                     n  =  2.0002 ≈ 2

Putting Empirical Formula and value of "n" in equation 1,

                    Molecular Formula  = 2 × SO

                    Molecular Formula  =  S₂O₂  (Disulfur Dioxide)

4 0
4 years ago
7.26 of a hydrate, Cu(NO3)2.xH2O, formed 2.4 g copper(II) oxide.
goldfiish [28.3K]

Number of moles= mass/ molar mass

Or n=m/MM

n = number of moles

m = mass

MM = molar mass

1) n CuO = 2.4g / 79.54g/mol = 0.03 mol CuO

2) n Cu(NO3)2.xH2O = 7.26 g / 205.6 = 0.035 moles of Cu(NO3)2.xH2O

3) 205.6 g

Cu = 63.5 g

N = 14g

O =16g

H= 1 g

63.5+ (14+(16*3))*2+1*2+16 =205.6 g

4) yes is 188g

5) I don’t know, I assume was 1

6 0
4 years ago
Read 2 more answers
How does hydrogen peroxide bleach hair?
harkovskaia [24]

How does hydrogen peroxide bleach hair? THe h202 molecule sbreak the double bonds in pigment molecules


Question 3

What advantage does hydrogen peroxide have over other bleaching agents such as chlorine gas? Hydrogen peroxide decomposes into nontoxic water and oxygen.  

Question 4

How does hydrogen peroxide play a role in air pollution?Peroxide fragments react with unburned fuel creating eye irritants.

Question 5

In the reaction between melanin and hydrogen peroxide, which substance is oxidized (receives electrons)? melanin is oxidized,hydrogen peroxide is reduced


8 0
4 years ago
How many protons, electrons and neutrons does carbon have?
VLD [36.1K]

Answer:

6 all hope it helps thanks

8 0
3 years ago
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