3 years ago

Which substance has a molar mass of 133.3 g? BaCl2 P2O5 AlCl3 MgCl2

Chemistry

2 answers:

sammy [17]3 years ago

4 0

The answer is AlCl3, it’s 133.34g/mol

DerKrebs [107]3 years ago

3 0

The answer is AlCl3 which has the molar mass of 133.34 g/mol

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Read 2 more answers

Hydrogen bromide decomposes when heated to 437C according to the equation: 2HBr(g) H2(g) Br2(g). If the reaction starts with 2.1

iren [92.7K]

Answer:

<h3>the equilibrium constant of the decomposition of hydrogen bromide is 0.084</h3>

Explanation:

Amount of HBr dissociated

$2.15 \ mole \times \frac{36.7}{100} \\\\=0.789 \ mole$

2HBr(g) ⇆ H2(g) + Br2(g)

Initial Changes 2.15 0 0 (mol)

- 0.789 + 0.395 + 0.395 (mol)

At equilibrium 1.361 0.395 0.395 (mole)

Concentration 1.361 / 1 0.395 / 1 0.395 / 1

at equilibrium (mole/L)

$K_c=\frac{[H_2][Br_2]}{[HBr]^2} \\\\=\frac{(0.395)(0.395)}{(1.361)^2} \\\\=\frac{0.156025}{1.852321} \\\\=0.084$

<h3>Therefore, the equilibrium constant of the decomposition of hydrogen bromide is 0.084</h3>

6 0

3 years ago

A gas at 42. 0°c occupies a volume of 1. 32 l. if the volume increases to 2. 24 l, what is the new temperature in kelvin?

Nina [5.8K]

the answer is 534.54 kelvin

8 0

2 years ago

Part A In a particular experiment at 300 ∘C, [NO2] drops from 0.0138 to 0.00886 M in 374 s . The rate of disappearance of NO2 fo

sweet-ann [11.9K]

Answer:

The rate of disappearance of $NO_2$ for this period is $-1.32\times 10^{-5} M/s$

Explanation:

Initial concentration of $NO_2$ = x = 0.0138 M

Final concentration of $NO_2$ = y = 0.00886 M

Time elapsed during change in concentration = Δt = 374 s

Change in concentration , $\Delta [NO_2]$ = y - x = 0.00886 - 0.0138 M = -0.00494 M

The rate of disappearance of $NO_2$ for this period is:

$\frac{\Delta [NO_2]}{\Delta t}=\frac{-0.00494 M}{374 s}=-1.32\times 10^{-5} M/s$

4 0

3 years ago