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blagie [28]
3 years ago
10

Does anyone want free point? Just comment whatever٩(ˊᗜˋ)و

Chemistry
2 answers:
Vsevolod [243]3 years ago
7 0

Answer:

agh thanks bestie for the points have a great day

Explanation:

olga2289 [7]3 years ago
3 0

Answer:

ddddddddddddddddddddddddddddddddd

Explanation:

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The object is traveling at a velocity of m/s.
marishachu [46]

Answer:

= 3.75m {s}^{ - 1}  \\

Explanation:

velocity =  \frac{displacement}{time} \\  =  \frac{15m}{4s}   \\  = 3.75m {s}^{ - 1}

3 0
4 years ago
How many oxygen atoms are in 8.20 g Na 2SO 4?
dusya [7]

Answer:

No. of atom =

no.of moles x avagardro's number xatomicity

= weight /molar mass x No x atomicity

=8.2/142 x6.02x10^23 x 4

=0.346 x 10^23(approximately)

3 0
3 years ago
Formeaza grafic formarea moleculelor de o2 HCL NH3 se cunoaste O cu Z=8 H cu Z=1 N cu Z=7 Cl cu Z=17
bearhunter [10]
Grafic O cunoaste penis in throat and hairy ball sacks down my estofogas
3 0
3 years ago
Write the chemical formulas of the species that will act as acids in the 'acids' row, the formulas of the species that will act
Usimov [2.4K]

Answer:Acids. :H2CO3, H3PO4,H3OBR

CH3COOH,

Bases MgO,NH4OH,CaOH

Neutral species; CaC,CaCO3,ClO3

Explanation:

5 0
3 years ago
In a study of the formation of NOx air pollution, a chamber heated to 2200°C was filled with air (0.790 atm N₂, 0.210 atm O₂). W
Irina-Kira [14]

Answer:

N₂ = 0.7515atm

O₂ = 0.1715atm

NO = 0.0770atm

Explanation:

For the reaction:

N₂(g) + O₂(g) ⇄ 2NO(g)

Where Kp is defined as:

Kp = \frac{P_{NO}^2}{P_{N_2}P_{O_2}}}

Pressures in equilibrium are:

N₂ = 0.790atm - X

O₂ = 0.210atm - X

NO = 2X

Replacing in Kp:

0.0460 = [2X]² / [0.790atm - X] [0.210atm - X]

0.0460 = 4X² / 0.1659 - X + X²

0.0460X² - 0.0460X + 7.6314x10⁻³ = 4X²

-3.954X² - 0.0460X + 7.6314x10⁻³ = 0

Solving for X:

X = - 0.050 → False answer. There is no negative concentrations.

X = <em>0.0385 atm</em> → Right answer.

Replacing for pressures in equilibrium:

N₂ = 0.790atm - X = <em>0.7515atm</em>

O₂ = 0.210atm - X = <em>0.1715atm</em>

NO = 2X = <em>0.0770atm</em>

3 0
3 years ago
Read 2 more answers
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