Acids and bases escape room And answers

what will the new volume of a 22.4L same of a gas at STP if the pressure remains constant and the temperature is cut in half? A.

In-s [12.5K]

Answer:

$\boxed{\text{C. 11.2 L}}$

Explanation:

The pressure is constant, so we can use Charles' Law to calculate the volume.

$\dfrac{V_{1}}{T_{1}} = \dfrac{V_{2}}{T_{2}}$

Data:

V₁ = 22.4 L; T₁ = 273.15 K

V₂ = ?; T₂ = 136.58 K

Calculations:

$\dfrac{ 22.4}{273.15} = \dfrac{ V_{2}}{136.58}\\\\0.082 00 = \dfrac{ V_{2}}{136.58}\\\\V_{2} =0.082 00 \times 136.58 = \boxed{\textbf{11.2 L}}$

5 0

3 years ago

Please help ASAP please

77julia77 [94]

Answer:

3

Explanation:

Number of Energy Levels: 3

First Energy Level: 2

Second Energy Level: 8

Third Energy Level: 7

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5 0

3 years ago

Read 2 more answers

Which of the following elements would most likely become a positive ion when forming a chemical bond?

mart [117]

Answer: correct option will D.

Explanation:

Calcium belongs to the group 2 i.e. of alkaline earth metals in periodic table. electronic configuration of calcium is $[Ar]4s^2$ .

So in order to attain noble gas configuration calcium will loose its two electrons during chemical bond formation.

$Ca\rightarrow Ca^{2+}+2e^-$

Sulfur is a non metal which forms negatively charged ion so as to complete ts octet during chemical bond formation.

Helium is a noble gas with fully filled electronic configuration.

Carbon forms bond which is covalent in nature.

4 0

4 years ago

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When was the first record of a scientific method being used?

Dmitry_Shevchenko [17]

Answer:

In the mid-19th century Claude Bernard was also influential, especially in bringing the scientific method to medicine. In his discourse on scientific method, An Introduction to the Study of Experimental Medicine (1865), he described what makes a scientific theory good and what makes a scientist a true discoverer.

Explanation:

8 0

3 years ago

Use Hess's Law and equations B and C to find the enthalpy change for equation A. A) 2 C2H4 + H2O à C4H9OH ΔH = ??? B) 2 C2H4 + 6

Mariulka [41]

Answer:

It's B

Explanation:

4 0

3 years ago

Acids and bases escape roomAnd answers