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mamaluj [8]
3 years ago
14

With the levels closest to the nucleus of

Chemistry
1 answer:
Dmitry_Shevchenko [17]3 years ago
5 0

Answer:

The first energy level is closest to the nucleus. The second energy level is a little farther away than the first. ... The electrons in the energy level farthest from the nucleus are called valence electrons. Atoms in the same column (group) in the periodic table have the same number of valence electrons.

Explanation:

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Determine how many grams of N2 are produced from the reaction of 8.37 g of H2O2 and 5.29 g of N2H4.
Dmitriy789 [7]
N₂H₄  +  2H₂O₂    →   N₂  +  4H₂O

mol = mass ÷ molar mass

If mass of hydrazine (N₂H₄)  = 5.29 g 
then mol of hydrazine           = 5.29 g ÷ ((14 ×2) + (1 × 4))
                                              = 0.165 mol

mole ratio of hydrazine to Nitogen is     1   :  1
  ∴ if moles of hydrazine = 0.165 mol
     then moles of nitrogen = 0.165 mol

Mass = mol × molar mass

Since mol of nitrogen (N₂)  = 0.165
then mass of hydrazine      = 0.165 × (14 × 2)
                                           = 4.62 g
5 0
3 years ago
Protons, neutrons, and electrons.
natima [27]
What are you asking?

8 0
3 years ago
What is the volume of 300. g of mercury vapor at 822K and 0.900 atm?
Dominik [7]

Answer:

112.2L

Explanation:

Volume (V) = 300g

Temperature (T) = 822K

Pressure (P) = 0.9atm

using the ideal gas equation;

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

Molar gas constant (R) = 0.0821L.atm/mol.K

Mole (n) = \frac{Mass (m)}{Molar mass (M)}                Molar mass of Mercury  = 200.59g/mol

n = \frac{300g}{200.59 g/mol} \\

   = 1.496mol

Now, the volume can be calculated;

V = \frac{1.496mol* 0.0821L.atm/mol.K*822K}{0.9atm}

∴Volume of mercury = 112.2L

8 0
2 years ago
What is the term for a solid that has been dissolved into a liquid?
Nat2105 [25]
The answer is Solute.  The solution is the whole thing.  The solvent is the major component (the liquid doing the dissolving).
6 0
3 years ago
I need this project using large intestine, if you help me with one of them or everything I will give you brainest. Please help a
Lelu [443]

Answer:

large intestine is right below the stomach and gallbladder and has the small intestine in the middle

works mainly with the digestive system

The large intestine gets rid of the undigested food that the small intestine could not absorb and reabsorbs water from the digestion

other organs include:

pancreas

small intestine

gallbladder

liver

stomach

esophagus

salivary glands

the function of the large intestine is to get rid of waste, absorb water, and absorb any nutrients which did not get absorbed in the small intestine

Explanation:

5 0
3 years ago
Read 2 more answers
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