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Thepotemich [5.8K]
3 years ago
12

The article defines several kinds of electromagnetic waves present in our everyday lives. Identify three kinds that you have exp

erienced or interacted with. For each, explain how you experienced it.
Chemistry
1 answer:
Svetlanka [38]3 years ago
4 0

MICROWAVEOVENS

In a microwave oven, microwaves emitted by a small antenna are directed into the cooking compartment, and as they enter, they pass a set of turning metal fan blades.

radio waves

it used to convey information from one place to another through intervening media,like- Radios and televisions

X Rays

used in hospitals to produce photograph of bone to check for break or fracture.They can penetrate less dense matter such body tissue and skin.

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Does a chemical formula represent number of atoms and types of atoms in a compound?
makvit [3.9K]

Answer:

no

Explanation:

that is a molecular formula

6 0
3 years ago
When hafnium metal is heated in an atmosphere of chlorine gas, the product of the reaction is found to contain 62.2 percent Hf b
Artemon [7]

Answer:

HfCl3

Explanation:

Step 1

Divide the percent by mass of each element by its relative atomic mass

Hf- 62.2/178.5, Cl-37.4/35.5

0.348, 1.054

Step2

Divide through by the lowest ratio

0.348/0.348, 1.054/0.348

1, 3

Therefore the empirical formula is HfCl3

8 0
3 years ago
Which change occurs when a barium atom loses two electrons?(1) It becomes a negative ion and its radius decreases.(2) It becomes
Tcecarenko [31]
<h2>Changes Occurs when a Barium Atom - Option 3  </h2>

When a barium atom loses two electrons it becomes a positive ion and its radius decreases. Barium (Ba) has atomic number 56 so it has 2 electrons in first shell of an atom to become stable according to duplet rule. Then other 52 electrons revolve in the shells according to octet rules.

Another 2 electrons are in the outermost shell. To become stable electrons lose to form barium ions (Ba+2). Hence, by losing 2 electrons the outermost shell will be diminished so its radius decreases and by losing electrons it becomes positive ions.

5 0
4 years ago
Read 2 more answers
The chemical properties of ca are most similar to the chemical properties of ?
EastWind [94]
<span>some elements would be Beryllium, Barium, Magnesium, and Strontium</span>
6 0
3 years ago
I need help
qaws [65]

D) All three bulbs would go out because the circuit would no longer have a ground thereby deeming it "open".

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4 years ago
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