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2 years ago

Please do not ignore, I don’t know how to find the last part so can you please explain it to me? I’m having trouble with that

Chemistry

2 answers:

Anton [14]2 years ago

7 0

Answer:

Neutral

Explanation:

U need to count the number of protons and electrons and see which has more...

Here the atom is neutral cause the electrons and protons are equal and cancell each other out.

I hope im right!!

skad [1K]2 years ago

6 0

Answer:

To find the overall charge subtract electrons from protons

So in this example its 0

Explanation:

4 Protons

4 electrons

so basically

+4-4=0

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The distance from Santa Maria to Los Alamos is 16.25 mi. what is the distance in meters?

Radda [10]

Answer:

26,167.47m

Explanation:

Problem:

We are to solve this problem using dimensional analysis:

from the given conversion factors-

0.621mi = 1.00km

1km = 1000m

From the problem, we are groing from miles to metres:

16.25mi x $\frac{1km}{0.621mi}$ x $\frac{1000m}{1km}$

The mi will cancel out and also the km. This leaves us with the desired unit we want which is meters, m.

= 26,167.47m

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2 years ago

Describe three findings of the Human Genome Project Write it in your own words

nata0808 [166]

Answer:

The biggest known human gene, is made up of about 2.4 million bases. The Human Genome Project also gave us more detailed information about chromosomes. It turns out that chromosome 1 contains the most genes, while the Y chromosome has the fewest.

Explanation:

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2 years ago

32 gm of O2 to mole of O2

lana [24]

Molar mass of O2:-

$\\ \rm\longmapsto 2(16u)=32g/mol$

Now

$\boxed{\sf No\:of\;moles=\dfrac{Given\:Mass}{Molar\:Mass}}$

$\\ \rm\longmapsto No\:of\;moles=\dfrac{32}{32}$

$\\ \rm\longmapsto No\:of\;moles=1mol$

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2 years ago

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Leona [35]

Answer:

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2 years ago

Read 2 more answers

How many grams of zinc would be required to produce 9.65g of zinc hydroxide

Effectus [21]

The question is incomplete, here is the complete question:

How many grams of zinc would be required to produce 9.65g of zinc hydroxide

Zn+2MnO₂+H₂O→Zn(OH)₂+Mn₂O₃

Answer: The mass of zinc required is 6.35 grams

Explanation:

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ .....(1)

Given mass of zinc hydroxide = 9.65 g

Molar mass of zinc hydroxide = 99.4 g/mol

Putting values in equation 1, we get:

$\text{Moles of zinc hydroxide}=\frac{9.65g}{99.4g/mol}=0.0971mol$

The given chemical equation follows:

$Zn+2MnO_2+H_2O\rightarrow Zn(OH)_2+Mn_2O_3$

By Stoichiometry of the reaction:

1 mole of zinc hydroxide is produced from 1 mole of zinc

So, 0.0971 moles of zinc hydroxide will be produced from = $\frac{1}{1}\times 0.0971=0.0971mol$ of zinc

Now, calculating the mass of zinc from equation 1, we get:

Molar mass of zinc = 65.4 g/mol

Moles of zinc = 0.0971 moles

Putting values in equation 1, we get:

$0.0971mol=\frac{\text{Mass of zinc}}{65.4g/mol}\\\\\text{Mass of zinc}=(0.0971mol\times 65.4g/mol)=6.35g$

Hence, the mass of zinc required is 6.35 grams

6 0

2 years ago