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3 years ago

4. A gas at 400 K is placed in a 4.0 L moveable piston. The gas

Chemistry

1 answer:

sweet-ann [11.9K]3 years ago

6 0

I’m stuck on that question

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How many moles of NaCl are contained in 50.0 mL of 2.50 M NaCl?

GarryVolchara [31]

Answer: 0.144 moles. :)

Explanation:

5 0

3 years ago

Guess how many water molecules self-ionize in one liter of water! a) 7 moles b) 1 mole c) 10,000,000 moles d) 0.0000001 moles

Rudiy27

Answer:

Explanation:

This seems like a weird question

Water is held together by covalent bonds. The amount of energy required to break these bonds so that water would split into it's respective ions is pretty high. The chances that any one of the molecules floating in 1L of water get enough energy to spontaneously burst into it's ions is slim to none.

So, D) seems like the most likely answer

6 0

3 years ago

Please help with #2 and #3

Vaselesa [24]

Answer:

2. $V_2=17L$

3. $V=82.9L$

Explanation:

Hello there!

2. In this case, we can evidence the problem by which volume and temperature are involved, so the Charles' law is applied to:

$\frac{V_2}{T_2}=\frac{V_1}{T_1}$

Thus, considering the temperatures in kelvins and solving for the final volume, V2, we obtain:

$V_2=\frac{V_1T_2}{T_1}$

Therefore, we plug in the given data to obtain:

$V_2=\frac{18.2L(22+273)K}{(45+273)K} \\\\V_2=17L$

3. In this case, it is possible to realize that the 3.7 moles of neon gas are at 273 K and 1 atm according to the STP conditions; in such a way, considering the ideal gas law (PV=nRT), we can solve for the volume as shown below:

$V=\frac{nRT}{P}$

Therefore, we plug in the data to obtain:

$V=\frac{3.7mol*0.08206\frac{atm*L}{mol*K}*273.15K}{1atm}\\\\V=82.9L$

Best regards!

6 0

3 years ago

El sistema digestivo es un grupo de órganos que trabajan juntos para?

timama [110]

El sistema digestivo es un grupo de órganos que trabajan juntos para convertir los alimentos en energía y nutrientes básicos para alimentar a todo el cuerpo.

3 0

3 years ago

The theory of continental drift was widely unaccepted until scientists started using ________ the map the ocean floor.

Bumek [7]

Answer:

B. SONAR (Sound Navigation Ranging)

Explanation:

Just took the test

4 0

4 years ago

Read 2 more answers