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3 years ago

Match each gas law with the correct statement.

Chemistry

2 answers:

ehidna [41]3 years ago

5 0

Answer:

Boyle's Law is B

Charles's Law is C

Gay-Lussac's Law is A

Explanation:

The reason these are correct is because:

Boyle's law is a indirect between pressure and volume

Charles's Law is direct between volume and temperature

Gay-Lussac's Law is direct pressure and temperature

Serhud [2]3 years ago

4 0

The correct match are as follows:

Boyles Law is about a gas at constant temperature. Therefore, the correct match would be the volume of a gas varies inversely with pressure if the temperature is kept constant.

Charles Law would be that the volume of a gas varies directly with temperature if the pressure is kept constant.

Gay-lussac's law would be that the pressure of a gas varies directly with temperature if the volume is kept constant.

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Which of the following [H+] values describes the most basic (alkaline) solution?

Aleks04 [339]

The H+ concentration that would best describe a basic solution would be the one having values less than 10^-7. The pH of a solution is related to H+ concentration by pH = -log[H+]. Therefore, as the concentration of H+ decreases the alkalinity would rise.

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4 years ago

Room temperature is usually considered to be 25°C. What is that in kelvins?

kotegsom [21]

Answer:

298.15 K.

Explanation:

Room temperature is generally taken to be 25 °C (around 77 °F). 0 °C is equivalent to 273.15 K, so we add 273.15 to 25 to find that room temperature is around 298.15 K

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3 years ago

When HCl(g) reacts with O2(g) to form H2O(g) and Cl2(g), 6.84 kcal of energy are evolved for each mole of HCl(g) that reacts. Wr

puteri [66]

Answer:

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∆H=-27.36 kcal

Explanation:

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6 0

3 years ago

How many atoms are in the 3.5 moles of arsenic atoms?

Dmitry_Shevchenko [17]

Number of atom in one mole = 6.022 × 10²³
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In short, Your Answer would be 2.1 × 10²⁴ atoms

Hope this helps!

6 0

3 years ago

Read 2 more answers

Find the ratio v/cv/c for an electron in the first excited state (n = 2) of hydrogen.

dezoksy [38]

The answer is 0.365:100.

v/c ratio represents ratio of speed of an electron (v) to the speed of light (c).

How is the speed of an electron calculated?

The speed of an electron (v) is given by Bohr's model as-

$v =\frac{1}{n}\; \frac{e^{2}}{4\pi \varepsilon _{0}}\times \frac{2\pi }{h}$

Now, for the first excited state, n = 2.

e - Charge of electron = $1.6$ × $10^{-19}$ C

h - Plank's constant = $6.6$ × $10^{-34} J.s$

ε₀- permittivity $= 8.85$ × $10^{-12}$ $N^{-1}.C^{2}.m^{-2}$

Put the above data in the formula-

$v =\frac{1}{2}\; \frac{e^{2}}{4\pi \varepsilon _{0}}\times \frac{2\pi }{h} =\frac{1}{4}\times \frac{(1.6\times 10^{-19})^{2}}{8.85\times 10^{-12}\times 6.6\times 10^{-34}}\\ \\ =0.01096\times 10^{8} \\ \\=1.096\times 10^{6}ms^{-1}$

Now, the speed of light, c = $3.0$ × $10^{8}\ m/s$

Thus, the v/c ratio for an electron in the first excited state is calculated as-

$\frac{v}{c} =\frac{1.096* 10^{6}\ m/s }{3.0 *10^{8}\ m/s }$ = $\frac{0.365}{100}$

Hence, the v/c ratio = 0.365:100.

To learn more about the speed of an electron (v), visit:

brainly.com/question/13198566

#SPJ4

6 0

2 years ago