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FinnZ [79.3K]
3 years ago
7

Atoms have _______ different subatomic particles.

Chemistry
1 answer:
valkas [14]3 years ago
6 0

Answer:

C. 3

Explanation:

I hope my answer will be useful

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In the following reaction, how many grams of nitroglycerin C3H5(NO3)3 will decompose to give 25 grams of CO2?
gogolik [260]

4C₃H₅(NO₃)₃_{(l)} ------> 12CO₂_{(g)} + 6N₂_{(g)} +  10H₂O_{(g)}  +  O₂_{(g)}

mol of CO₂  =  \frac{mass}{molar mass}

                    =  \frac{25g}{44.01 g/mol}

mol ratio of  CO₂ :  C₃H₅(NO₃)₃

                    12    :     4

∴  if  mole of CO₂  =  0.568 mol

then   "       "   C₃H₅(NO₃)₃  =  \frac{0.568 mol}{12}  *  4

                                           = 0.189 mol


∴ mass of nitroglycerin  =  mole  *  Mr

                                       =  0.189 mol  *  227.0995 g / mol

                                       =  43.00 g

8 0
3 years ago
Determine the number of valence electrons in pcl₃ and then draw the corresponding lewis structure.
Nikolay [14]

The number of valence electrons in PCl_{5} will be 26.

The atom's outermost inhabited shell is where valence electrons are found. They are significant because they have a major impact on how an atom's chemical characteristics are determined.

The number of valence electron in P in 5 and number of valence electron in Cl is 7. There are one molecule of P and three molecule of Cl in  PCl_{5}  molecule. By adding all valence electrons , the total number of valance electrons will be 26.

The Lewis structure of  PCl_{5}  is shown as:

Therefore, the number of valence electrons in PCl_{5} will be 26.

To know more about valence electrons

brainly.com/question/13993867

#SPJ4

7 0
2 years ago
A 16.0 g sample of methane gas, CH4, the gas used in a chemistry lab, has a volume of 5.0 L at 27ºC. Calculate the pressure.
NeX [460]

Answer:

4.9 atm

Explanation:

convert 16.0g of CH4 to moles

16.0 g CH4 x 1 mol CH4/16.0 g CH4 = 1.00 mol of methane

convert the temp into Kelvins: 27 + 273 = 300.K

PV = nRT

(P) (5.0 L) = (1.00 mol) (0.0821 L atm/mol K) (300.K)

P = 4.9 atm

6 0
2 years ago
Select all the correct answers.<br> What does an increase in the temperature of air indicate?
lora16 [44]

Answer:

a.the air has less thermal energy so that the temperature increases

5 0
4 years ago
According to the fluid-mosaic model of a cell membrane, the main component of a membrane is...
Julli [10]

Answer:

The answer is C

Explanation:

A lipid bilayer makes up the cell membrane because it is more like a chain link fence that is flexible allowing cell movement.

7 0
4 years ago
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