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nadezda [96]
3 years ago
13

Question 4

Chemistry
1 answer:
elixir [45]3 years ago
4 0

Answer:

True

Explanation:

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HELPP ASAP I’ll mark you as brainlister 100 points :((((
Aleksandr [31]

Answer:

the pool table one

Explanation:

cuz gas just goes EVERYWHERE

4 0
3 years ago
What is the IUPAC name of this compund?​
mr_godi [17]

Answer:

3-ethyl-4-methyl Heptane

Explanation:

longest chain is straight .

we start assigning number from where we are close to the branch to this mean its from left hand side. and we saw two chain 1 is ethyl and other is methyl . In alphabetical order e comes first as compare to m so we write ethyl first after that methyl and than in last we write longest chain name with ane (bcz we only have single vonds).

4 0
3 years ago
Read 2 more answers
An element is made up from ?
sertanlavr [38]

Answer:

Atoms

Explanation:

Elements are the chemical combinations of two or more atoms of the same kind

4 0
4 years ago
Read 2 more answers
After two half-lives, how much of the original material has decayed? 25 percent 50 percent 75 percent 100 percent
RideAnS [48]

The original material has decayed 75%

<h3>Further explanation</h3>

Given

two half-life

Required

The decayed sample

Solution

General formulas used in decay:  

\large{\boxed{\bold{N_t=N_0(\dfrac{1}{2})^{t/t\frac{1}{2} }}}

t = duration of decay  

t 1/2 = half-life  

N₀ = the number of initial radioactive atoms  

Nt = the number of radioactive atoms left after decaying during T time

t = 2 x t 1/2

Input the value :

\tt \dfrac{Nt}{No}=\dfrac{1}{2}^2=\dfrac{1}{4}=25\%  

The amount of Nt = 25% No

8 0
3 years ago
What are some instantaneous speed examples in an everday life!
Ainat [17]

Answer:

If you ask for water and water immediately appears that very second, this is an example of something instantaneous.

3 0
3 years ago
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