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4 years ago

The process used to separate two or more liquids based on differences in boiling point is called

1 answer:

eduard4 years ago

7 0

The process used to separate two or more liquids based on differences in boiling point is called fractional distillation.

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Aluminum + lead(ii) >aluminum nitrate +lead balanced equation

Triss [41]

2 Al +3 Pb(NO3)2 =2 Al(NO3)3 +3 Pb

5 0

4 years ago

A radioactive isotope, 14C decays to become 14N. After a time period of about 6,000 years, only about 12.5% of an original sampl

satela [25.4K]

Answer:

2000 years

Explanation:

A radioactive molecule will continuously decay and turn into another molecule. This nature of the radioactive molecule makes them can be used to estimate the age of an object. Half-life is the unit of time needed for radioactive molecules to decay to half of its mass. The formula for the mass remaining will be:

$N(t)= N_{0} (\frac{1}{2})^{\frac{t}{t_{1/2} } }$

Where

N(t)= number of the molecule remains

N0= number of molecule initially

t= time elapsed

t1/2= half time

We have all variable besides the half time, the calculation will be:

$N(t)= N_{0} (\frac{1}{2})^{\frac{t}{t_{1/2} } }$

$0.125= 1 (\frac{1}{2})^{\frac{6000}{t_{1/2} } }$

$(\frac{1}{8})= (\frac{1}{2})^{\frac{6000}{t_{1/2} } }$

$(\frac{1}{2})^3= (\frac{1}{2})^{\frac{6000}{t_{1/2} } }$

3= 6000/ (t1/2)

t1/2= 6000/3= 2000

The half-life is 2000 years

8 0

3 years ago

What is the area under the curve for the histogram below?

kodGreya [7K]

Answer:

Explanation:

There is no histogram

3 0

3 years ago

Read 2 more answers

Balance the following reaction. A coefficient of \"1\" is understood. Choose option \"blank\" for the correct answer if the coef

g100num [7]

Conservation of mass is the underlying principle of balancing equation. When we balance equation, this means that we acknowledge that before and after the chemical reaction, the elements are conserved. To balance the chemical equation, we add coefficients before each reactant and product. Here are the following answers:

Reaction 1:
2Al
3ZnCl2
3Zn
2AlCl3
Reaction 2:
4NH3
3O2
2N2
6H2O

8 0

3 years ago

Suppose a powerful battery is connected between a pair of inert graphite electrodes dipped into a pot of molten zinc chloride (s

zvonat [6]

The electrode A is a cathode. This is because it is negatively charged electrode and it attracts cations, or we can say it is positively charged.
The reaction occurs at the cathode
Zn2+ +2e⇒Zn
Anode reaction is
2CL- ⇒CL2+2e-
The overall reaction will be Zncl2(l) which completely disassociates then it is zn∧2+(l)+2cl∧-(l).

3 0

3 years ago