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motikmotik
3 years ago
15

What is the definition of a gas

Chemistry
2 answers:
nignag [31]3 years ago
7 0
A gas is something that takes up the space of the container, because it doesn't have a fixed shape.
elixir [45]3 years ago
6 0
<em>Gas: </em>formless own fluid volume, the molecules tend to separate from each other and have a higher mobility than liquids.
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How long will a current of 0.995 A need to be passed through water (containing H2SO4) for 5.00 L of O2 to be produced at STP
DIA [1.3K]

Answer:

24 hours

Explanation:

The computation is shown below:

The needed mole of O_2 is

= 5 ÷22.4 = n

Also 1 mole of O_2 required four electric charge

Now the charge needed is

= n × 4 × 96,500 C

= 4 × 96,500 × 5 c ÷ 22.4

= 86160.714 C

Now

q = i t

t = q ÷ i

= 86160.714 C ÷ 0.995

= 86593.7 seconds

= 24 hours

Hence, the correct option is A.

3 0
3 years ago
WILL GIVE 50 POINTS AND BRAINLIEST Describe the properties of alkaline earth metals. Based on their electronic arrangement, expl
Arisa [49]
Alkaline earth metals are metals of group two. They are divalent metals and they have a highly negative reduction potential hence the metals are mostly extracted by electrolysis.

They are highly reactive metals. They react with water but do so less readily than alkali earth metals.

Owing to their high reactivity, they are seldom found free in nature. They always occur in combined state with other highly reactive nonmetals.
7 0
2 years ago
What is formed from nuclear decay? (2 points)
Anvisha [2.4K]

Answer:

B

Explanation:

A radioactive particle

7 0
2 years ago
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Neko [114]

Answer:

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4 0
2 years ago
Read 2 more answers
¡¡¡PLEASE HELP!!! I'm stuck on a question..
Reptile [31]

 The half  life  of uranium- 238  is

 4.46 x10^9  years


 Explanation

Half life  is the time  taken for  the  radioactivity  of   a isotope  to fall  to half  its  original  value.

The  original   mass  of uranium-238  is  4.0 mg

  Half  of original  mass of uranium  = 4.0  mg /2 = 2.0  mg

since  it  take 4.46  x 10^ 9 years  for  the sample   to half  the half life of uranium -238 = 4.46 x10^9 years

7 0
3 years ago
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