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Morgarella [4.7K]
3 years ago
12

Help plsss

Chemistry
2 answers:
Tema [17]3 years ago
5 0
#47 is New Mexico, and its capital is Santa Fe.

Happy studying ^-^
PtichkaEL [24]3 years ago
3 0
I think number 47 on the map would be New Mexico i hope i helped out
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A 100g sample of Carbon-14 has a half-life of 5 years. How much Carbon-14 is left after 10 years?
attashe74 [19]

Answer: The amount of carbon-14 left after 10 years is 25 g

Explanation:

Formula used :

a=\frac{a_o}{2^n}

where,

a = amount of reactant left after n-half lives = ?

a_o = Initial amount of the reactant = 100 g

n = number of half lives =\frac{\text {given time}}{\text {half life}}=\frac{10}{5}=2

Putting values in above equation, we get:

a=\frac{100g}{2^2}

a=\frac{100g}{4}=25g

Therefore, the amount of carbon-14 left after 10 years is 25 g

6 0
3 years ago
How is proper science validated?
STatiana [176]

The proper science is validated by Experimentation and Testing .

What is experiment and testing?

Experiment is performed to support or Refuge a hypothesis which is given by someone.

Test is to figure out what we expect and what we have observed.

So , the proper validation of science is Experiment and testing because science is all about hypothesis, discoveries if want to prove them right or wrong we have to perform experiment and test .

to learn more about testing and experiment click here brainly.com/question/28175030

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6 0
2 years ago
The only bonds in a formula unit of CaF2 are __________. nonpolar covalent polar covalent ionic metallic
adell [148]

Answer:

ionic

Explanation:

Ionic bonds exist between Ca and F ions in CaF₂. Ionic bonds are interatomic bonds formed by the transfer of electrons from one atom to the other.

The donor atom here is Ca and it has two valence electrons. Fluorine is the receiving atom with 7 electrons in its outermost shell.

Ca would give one each of its two outermost electrons to the fluorine atoms to complete their octet. Ca ion would now resemble Argon and the flourine atoms would look more like Neon atoms.

This is an ionic bond

7 0
3 years ago
Carbon tetrachloride is made according to the following reaction:
Korolek [52]
I think thats the answer but feel free to check my work

3 0
3 years ago
175.24g of strontium equals how many moles
OverLord2011 [107]
Using dimensional analysis, we can find the moles of strontium by comparing the mass of strontium to it's atomic mass.
You can find the atomic mass of Sr on the periodic table:
Atomic Mass Sr = 87.62g/mol

In case you are not familiar, dimensional analysis works like this:
(what we know) x (conversion factor) = what we are looking for

The conversion factor compares the units of what we know to the units of what we are looking for. In this case, the conversion factor is:
1 mol/87.62g

The important thing to note about the conversion factor is that you want to be able to cancel out the units of your given measurement (in this case, it is the mass)

So, our full solution will be:
moles Sr = (175.24 g)x(1 mol/87.62 g)
(cancel out the mass units)
moles Sr = 175.24 x 1 mol/87.62
= 2.00 mol Sr

Hope this helped you!
4 0
3 years ago
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