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Westkost [7]
3 years ago
13

An element has two isotopes. 90% of the isotopes have a mass number of 20 amu, while 10% have a mass number of 22 amu. Calculate

the Average Atomic Mass of the element
Chemistry
1 answer:
jek_recluse [69]3 years ago
8 0

Explanation:

aam= 90%•20amu+10%•22amu/100

aam= 2020/100

aam= 20.2

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In normal conditions, warm water "piles up" in the Western Pacific Ocean.<br><br> True<br> False
kakasveta [241]
In normal conditions, warm water does "pile up" in the" Western Pacific Ocean.
8 0
3 years ago
Henry finds an element that is light blue, breaks easily in his hand, and does not reflect light. How should Henry classify the
pshichka [43]

Answer:

The options are not given, here are the options.

metal

a. Metal

b. a metalloid

c. a non-metal

d. a gas

The correct option is C.

Non metal

Explanation:

Henry should classify it as non metals because non metals are substances or elements that are poor conductors of heat and electricity they break easily I .e meaning they lack the ducibility of metals, meaning they cannot be stretched, they are brittle, they are not shiny and does not reflect light, they have high electronegativities that is they have atoms that can hold electrons to what they have.

4 0
3 years ago
How many Sodium (NA) Atoms are in Methylene?​
postnew [5]

Answer:

No Sodium(Na) in methylene

Explanation:

Methylene is an organic compound

4 0
3 years ago
Draw the structure of the compound formed from propanoic acid and dimethylamine
jeyben [28]

 The compound form from propanoic acid and dimethylamine is 3-(dimethylamino)propanoic acid. Propanoic acid is a liquid carboxylic acid that has pungent and unpleasant smell resembling to body odor. Its chemical formula is C2H5C00H. Moreover, dimethylamine is an organic compound and a secondary amine that is colorless, flammable gas with an ammonia like odor. Its chemical formula is (CH3)2NH.

The 2D structure is attached here.

 

                                                                        

                          

Download docx
7 0
3 years ago
What tool is used in an explosion site to chemically detect explosive residues on objects?
qaws [65]

Answer:

ion mobility spectrometer

Explanation:

it is an handheld chemical dectection device

Hope this helps

Please mark me as Brainliest

8 0
3 years ago
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