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Sidana [21]
2 years ago
11

Select the correct answer. Which electromagnetic wave has the longest wavelength? microwaves O B. infrared rays O C. X-rays radi

o waves​
Chemistry
1 answer:
icang [17]2 years ago
7 0

Answer:

microwaves

Explanation:

Microwaves and radio waves are the longest wavelengths while the shortest are gamma rays and x-rays

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Aluminum oxide is an ionic substance with formula al2o3. explain what this formula means.
matrenka [14]

Answer:

the 2 means there are 2 al and the 3 means there are 3 o

Explanation:

I hope this helps

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3 years ago
What is true for two pieces of iron at the same temperature?
miskamm [114]

Answer:

The average kinetic energy of their particles is the same.

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Help….? Anyone? It’s a test. 99 points
Crazy boy [7]
Answer:

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Explanation:

“Cyanobacterium” is the correct answer, as it has the kingdom bacteria in its name.
7 0
2 years ago
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Calculate the number of total atoms in 195 grams of Ni(OH)2. Use 6.022x10^23mol-1 for Avogadro’a number
olga2289 [7]

195 g×

1 mol

Ni(OH)

2

92.71

g Ni(OH)

2

×

6.022×

10

23

formula units

mol

=1.27×

10

24

formula units of Ni(OH)

2

Since there are  

5

atoms—one  

Ni

atom, two atoms of  

O

and two atoms of  

H

—in each formula unit of  

Ni(OH)

2

,

we multiply the number of formula units calculated above by  

5

:

1.27×

10

24

formula units of Ni(OH)

2

×

5 atoms

formula unit of Ni(OH)

2

=6.33× 10^ 24  total atoms  

5 0
3 years ago
Due in 8 minutes help!!..
svp [43]

Answer:

the answer is b. as you get more heated, you start sweating more.

Explanation:

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3 years ago
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