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Julli [10]
3 years ago
12

Please help it's really easy

Chemistry
2 answers:
Gekata [30.6K]3 years ago
6 0
It should be “chemical equation B”
Elodia [21]3 years ago
4 0

Answer:

b

Explanation:

welcome

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HELP ME OUT MY LOVELY CHEMISTRY CHADS I WILL GIVE YOU A KISS
vitfil [10]

Answer:

300K.

Explanation:

The following data were obtained from the question:

Initial volume (V1) = 300L

Initial temperature (T1) = 200K

Final volume (V2) = 450L

Final temperature (T2) =..?

Since the pressure is constant, the gas is obeying Charles' law.

Using the Charles' law equation, we can obtain the new temperature of the gas as follow:

V1/T1 = V2/T2

300/200 = 450/T2

Cross multiply to express in linear form

300 x T2 = 200 x 450

Divide both side by 300

T2 = (200 x 450)/ 300

T2 = 300K

Therefore, the new temperature of the gas is 300K.

6 0
3 years ago
(Sorry for my bad drawing I don't have the physical official drawing) frosty has been accused of breaking into a house through a
kicyunya [14]
Frosty the snowman is GUILTY. he broke into a room that was 20 degrees F, then moved into the room with the safe, which was 65 degrees F, above the freezing point, and no snow can not melt at 65 degrees. as he was tromping through the hot house, he began to turn back into liquid because he began melting in the heat. so all evidence points towards the fact that frosty did it.
6 0
3 years ago
Read 2 more answers
At a certain temperature, the equilibrium constant, K c , for this reaction is 53.3. H 2 ( g ) + I 2 ( g ) − ⇀ ↽ − 2 HI ( g ) K
swat32

Answer:

[HI]_{eq}=0.942M

Explanation:

Hello,

In this case, the initial concentrations of hydrogen and iodine are the same:

[H_2]_0=[I_2]_0=0.600M

Thus, considering the given undergoing chemical reaction, one states the law of mass action in terms of the change x due to the chemical change as shown below:

Kc=\frac{(2x)^2}{(0.600M-x)(0.600M-x)}=53.3

Therefore, solving for x by quadratic equation one obtains:

x_1=0.471M;x_2=0.826M

Nevertheless, the feasible result is the first one as the second one results in negative concentrations, thus, the hydroiodic acid equilibrium concentration turns out:

[HI]_{eq}=2*0.471M=0.942M

Best regards.

8 0
3 years ago
Read 2 more answers
To determine the molar mass of an unknown organic acid, HA, a 1.056 g sample is titrated with standardized NaOH. Calculate the m
meriva

Explanation:

Equation for the given reaction is as follows.

     HA(aq) + NaOH(aq) \rightarrow NaA(aq) + H_{2}O(l)

Therefore, moles of NaOH and HA are calculated as follows.

     Moles of NaOH = 0.256 M \times 0.03378 L

                                = 8.64 \times 10^{-3}

                                = 0.00864 mol

     Moles of HA = 0.00864

Also,  moles = \frac{\text{weight}}{\text{molecular weight}}

      Molecular weight = \frac{1.056 g}{0.00864 mol}

                                    = 122.22 g/mol

Thus, we can conclude that molar mass of given unknown organic acid is 122.22 g/mol.

4 0
3 years ago
A hydrogen atom has a diameter of about 10 nm. Express this diameter in micrometers, meters, and millimeters.
MariettaO [177]

1) 1 nm = 0.001 µm; one nanometer is equal to 0.001 (10⁻³) micrometer.

d(H) = 10 nm; diameter of hydrogen atom.

d(H) = 10 nm · 0.001 µm/nm.

d(H) = 0.01 µm = 10⁻² µm.

2) 1 nm = 10⁻⁹ m ; one meter is equal to 0.0000000001 (10⁻⁹) meter.

d(H) = 10 nm.

d(H) = 10 nm · 10⁻⁹ m/nm.

d(H) = 0.00000001 m = 10⁻⁸ m.

3) 1 nm = 10⁻⁶ mm ; one nanometer is equal to 0.000001 (10⁻⁶) millimeter.

d(H) = 10 nm · 10⁻⁶ mm/nm.

d(H) = 0.00001 mm = 10⁻⁵ mm.

4 0
3 years ago
Read 2 more answers
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