3 years ago

How many molecules are there in 3 moles of aluminum chloride ?

Chemistry

1 answer:

Svetradugi [14.3K]3 years ago

6 0

there are 4 atoms in aluminum chloride

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Rus_ich [418]

Answer:

The answer is B

Explanation:

The answer is B because representative particles can only be atoms.

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3 years ago

4. DBearded waste of Co-60 must be stored until it is no longer radioactive. Cobalt-60

Bingel [31]

464 g radioisotope was present when the sample was put in storage

<h3>Further explanation</h3>

Given

Sample waste of Co-60 = 14.5 g

26.5 years in storage

Required

Initial 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

Half-life of Co-60 = 5.3 years

Input the value :

$\tt 14.5=No.\dfrac{1}{2}^{26.5/5.3}\\\\14.5=No.\dfrac{1}{2}^5\\\\No=\boxed{\bold{464~g}}$

8 0

3 years ago

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mote1985 [20]

Answer

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3 years ago

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Bad White [126]

Answer:

1.200g

Explanation:

At the top it's 0 and that scale goes by 10s

The middle scale is 1 and it goes by 1s

The bottom scale is .2 and it goes by .1s

1+.2= 1.2 the extra zeroes are just place holders

1.200g

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3 years ago

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melisa1 [442]

Answer:

Explanation:

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