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jekas [21]
2 years ago
12

A student puts some sugar in a glass of water and stirs until the sugar is dissolved.

Chemistry
2 answers:
Eddi Din [679]2 years ago
4 0

Answer:

It does not change the identity of a substance. Sugar if dissolved in water is still sugar.

Explanation:

Darya [45]2 years ago
3 0
Yea his answer is right
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For the chemical equation SO 2 ( g ) + NO 2 ( g ) − ⇀ ↽ − SO 3 ( g ) + NO ( g ) the equilibrium constant at a certain temperatur
MakcuM [25]

Answer:

Moles of NO₂ = 0.158

Explanation:

                         SO 2 ( g ) + NO 2 ( g ) ⇄  SO 3 ( g ) + NO ( g )

              According to the law of mass equation

                                     

                                       K_{c} = \frac{[SO_{3} ][NO]}{[SO_{2}][NO_{2}  ]}

                              ⇒   3.10 = \frac{(1.00)(1.00)}{(2.30) [NO_{2} ]}    At equilibrium [SO₃] = [NO]

                              ⇒ [NO₂] = \frac{1}{6.3}

                              ⇒ [NO₂] = 0.158

So. number of moles of NO₂ at equilibrium added = 0.158

8 0
3 years ago
What is the (a) frequency and (b) wavelength (in nm) of a source of purple light at the edge of the visible light spectrum?
stiv31 [10]

Answer: a) Frequency=666\times10^{12}Hz-789\times10^{12}Hz

b) Wavelength=380nm-450nm

Explanation: Visible light is a form of electromagnetic wave.

Wavelength is defined as the distance between two successive crests of a wave. It is represented as symbol \lambda.

Frequency is defined as the number of complete cycles happening per second. It is represented by the symbol \nu.

Wavelength and Frequency follow inverse relation,

                                              \nu=\frac{c}{\lambda}

where, c = speed of light = 3\times10^8m/s

Wavelength and frequency of a wave is usually expressed in a range.

a)  \text{Frequency of visible light}=666\times10^{12}Hz-789\times10^{12}Hz

b) \text{Wavelength of visible light}=380nm-450nm


7 0
3 years ago
Which types of changes must follow the law of conservation of mass? (2 points)
Oksana_A [137]
Both Physical and chemical changes.
4 0
2 years ago
At-57 °C and 1 atm, carbon dioxide is in which phase? View Available Hint(s) Phase diagrams for water (Figure 1)and carbon dioxi
goblinko [34]

Answer:

Gas

Increase the pressure

Explanation:

Let's refer to the attached phase diagram for CO₂ (not to scale).

<em>At -57 °C and 1 atm, carbon dioxide is in which phase?</em>

If we look at the intersection between -57°C and 1 atm, we can see that CO₂ is in the gas phase.

<em>At 10°C and 2 atm carbon dioxide is in the gas phase. From these conditions, how could the gaseous CO₂ be converted into liquid CO₂?</em>

Since at 10°C and 2 atm carbon dioxide is below the triple point, the only way to convert it into liquid is by increasing the pressure (moving up in the vertical direction).

4 0
3 years ago
Which of the following BEST describes a way in which water moves in the water cycle?
____ [38]

Answer: Its A or D                                                        

wish i had an actual answer sorry..  

6 0
3 years ago
Read 2 more answers
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