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kipiarov [429]
2 years ago
10

How many neutrones does the isotope n-14 have

Chemistry
1 answer:
exis [7]2 years ago
4 0

Answer: 7

Explanation:

Proton/atomic number + Neutron = atomic mass

atomic mass - protons/atomic number = neutrons

14 - 7 = 7

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A reaction at evolves of dinitrogen monoxide gas. Calculate the volume of dinitrogen monoxide gas that is collected. You can ass
snow_tiger [21]

Answer:

The answer is "V = 18.8\  L".

Explanation:

Given:

n= 0.788 \ mmol = 0.788 \ mol \ \text{(1 mmol is a thousandths of a mol)}\\\\R = 0.08206\  \frac{Latm}{Kmol}\\\\T = 17.0^{\circ}\ C =  (17.0 + 273) \ K = 290 \ K\\\\ p=1\ atm\\\\V = ?

Using idel gas law:

PV = nRT\\\ \therefore \\\\V= \frac{nRT}{P}

V =\frac{0.788 \times 0.08206 \times  290}{1}

   =\frac{18.7523}{1} \\\\\ = 18.75

5 0
3 years ago
NEED THE ANSWER !!! NOW i have like an hour
ryzh [129]

Answer No 1:

The chemical model that is flawed is:

4 C2 + S8 → 4 CS2

In this reaction, there are more number of carbon atoms in the reactants but lesser number of cabon atoms in the products. For a reaction to be balanced, there should be the same number  of atoms in the reactants and products. Hence, option A does not represent a balanced equation.

<em>Answer No 2:</em>

The correct option is B) The model shows an unbalanced number of carbon atoms.

Consider the equation:

4 C2 + S8 → 4 CS2

In the reactants side of the equation, there are 8 atoms of carbon. In the products side there are only four carbon atoms. This shows that this equation in not balanced because of the carbon atoms.

The number of sulfur atoms remains same before the reaction and after the reaction. There are eight sulfur atoms in the reactants as well as products.

7 0
3 years ago
When diagramming an atom, the electron shells ____________ the nucleus must be filled first?
Nonamiya [84]

Concept: According to the basic concept of the electronic configuration of the element, the electron can be filled first in those shell which has least energy or (n +l) value. Here, n is the principal quantum number on shell and l is the azimuthal quantum number.

Since, the first shell has least value of energy in any atom. So, it should be filled first.

Hence, the correct statement can be written as;

When diagramming an atom, the electron shells _nearest to _ the nucleus must be filled first.

4 0
3 years ago
What best describes the battery in this picture? an electrolytic cell that has spontaneous half reactions
nasty-shy [4]

ok im not full sure man but i would say multiple voltaic cells that have spontaneous half reactions


     



                                          im sorry hope it helps

5 0
3 years ago
Read 2 more answers
Incompatibilidades do sulfato de níquel hexahidratado
nexus9112 [7]

Answer: El HEXAHIDRATO DE SULFATO DE NÍQUEL es incompatible con ácidos fuertes, azufre, Ni (NO3) 2, madera y otros combustibles. (NTP, 1992) A temperatura elevada sufre una reacción violenta con aluminio o magnesio en polvo. Cuando se calienta hasta la descomposición emite humos muy tóxicos de óxidos de azufre

Explanation:

8 0
3 years ago
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