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STatiana [176]
4 years ago
11

A gas at 1.2 atm has a

Chemistry
1 answer:
Papessa [141]4 years ago
8 0

Answer:

1.26 mole

Explanation:

Using ideal gas law

PV=nRT

R= 0.08206

T=273+87=360

1.2×31=n×0.08206×360

37.2 =n × 29.54

n= 1.26 mole

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A photon of light with a frequency of 2.74 x 1014 Hz collides with an electron. How much energy
sesenic [268]

Answer:

1.82x10⁻¹⁹Joules is the energy of the photon that is absorbed by the electron.

Explanation:

The energy of a photon is given by the equation:

E = h×ν

<em>Where E is energy of the photon in Joules.</em>

<em>h is Planck's constant (6.6262x10⁻³⁴Js)</em>

<em>And ν is frequency of the photon (In Hz = s⁻¹)</em>

<em />

The frequency of the photon is 2.74x10¹⁴Hz. That means its energy is:

E = 6.6262x10⁻³⁴Js × 2.74x10¹⁴s⁻¹

E =

<h3>1.82x10⁻¹⁹Joules is the energy of the photon that is absorbed by the electron</h3>

<em />

4 0
3 years ago
Phenol, c6h5oh, is a stronger acid than methanol, ch3oh, even though both contain an o]h bond. Draw the structures of the anions
timurjin [86]

In resonance structures, the chemical connectivity in the molecule is same but the distribution of electrons are different around the structure.  They are created by moving electrons in double or triple bonds, and not atoms.

Phenol, C_6H_5OH and methanol, CH_3OH both are alcohols  that contain an -OH group attached to carbon atom.

Due to loss of 1 H from phenol, it forms phenoxide anion and due to presence of double bond in the benzene ring the negative charge on the oxygen atom (which represents electrons) will resonate with double bonds of benzene ring as shown in the image. The resonance-stabilized phenoxide ion is more stable. Whereas when methanol lose 1 H it forms methoxide anion and there are no such electrons present in the structure of methoxide that will result in the movement of electron. Since, due to resonance-stabilized phenoxide ion is more stable than methoxide ion, so it is a stronger acid.

The structures of the anions resulting from loss of 1 H from phenol and methanol is shown in the image.

8 0
3 years ago
PLEASE HELP!!!
monitta

Answer:

The answer is 4.10L

Explanation:

because .500 x 8 = 4 and .500 divided by 10 is .05 so then multiplying that by 2 is .1 so then you just add 4 +.1 to get 4.10

Hope this helps!

7 0
3 years ago
Creativity plays a vital role in science. In what aspects of science is creativity involved? A. Designing experiments B. Formula
Citrus2011 [14]

Answer:

Option D. All of these

Explanation:

The creativity involves the  process of using the brain to use new or existing knowledge to overcome a problem. This sometimes involves starting something purely from stretch or using the existing design laws and theories to solve a problem. As a result, the correct option is D as all of the above applies.  

4 0
3 years ago
Read 2 more answers
What is a scientific explanation for a range of hypotheses and observations supported by testing
worty [1.4K]
<span>It verifies the significant relationships of the observed and hypothesized variables in the study.

Furthermore, the authors utilize and make use of the scientific method in order to have clear basis and evidence for their investigations. Research method is always used to answer every scientific inquiry and in gaining evidential data or knowledge. The scientific method has the following process or at least undergoes the process of
1. Observation</span> 
2. Hypothesis 
3. Experimentation 
4. Interpretation of data 
5. Evaluating the data 
6. Passing and recording the data 

<span>These steps are crucial and the empirical data that these scientists obtain are very important to keep that is why research paper, thesis and dissertations exists.<span>
</span></span>
8 0
3 years ago
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