1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
fredd [130]
3 years ago
11

Why can some electric appliances be immersed in water without damage

Chemistry
1 answer:
sukhopar [10]3 years ago
3 0

Some electric appliances can be immersed in water without damage because they are well insulated. The electrical systems are well insulated and tightly sealed so that when they are immersed in water, no water can get into the electrical parts.

You might be interested in
We can model the 1,3,5-hexatriene as a box of length 0.904 nm, with 6 electrons in the first three energy levels. What is the fr
Naya [18.7K]

Answer:

v = 7.85 × 10¹⁴ Hz

Explanation:

The first three energy level can be represented as follows:

⇅ ------> n₄ = 4

⇅ ------> n₃ = 3

⇅ ------> n₂  = 0

ΔE = hv = \frac{h^2}{8me^2}(n_4^2-n_3^2)

ΔE = hv = \frac{h^2}{8me^2}(4^2-3^2)

ΔE = hv = \frac{h^2}{8me^2}(16-9)

ΔE = hv = \frac{7*h^2}{8me^2}

where h = planck constant = 6.626*10^{-34} J.s

mass (m) = 9.11*10^{-11}

e = 0.904 nm = 0.9*10^{-9} m

hv = \frac{7*h^2}{8me^2}

hv = \frac{7*(6.6246*10^{-34})^2}{8*9.11*10^{-31}*(0.9*10^{-9})^2}

hv =  \frac{3.07197276*10^{-66}}{5.90328*10^{-48}}

hv = 5.20384051*10^{-19} J

v = \frac{5.20384051*10^{-19}}{h}

v = \frac{5.20384051*10^{-19}J}{6.626*10^{-34}J.s}

v =  7.85366814 *10^{14}s^{-1

v = 7.85 × 10¹⁴ Hz     (since s⁻¹ is equivalent to 1 Hz)

Thus, the frequency of an electronic transition from the highest-occupied orbital to the lowest-unoccupied orbital = 7.85 × 10¹⁴ Hz

7 0
3 years ago
A sample of helium gas has a volume of 250.0 mL when it pressure is 0.935 atm. If the
UkoKoshka [18]

Answer:

The answer is

<h2>1.336 atm</h2>

Explanation:

In order to find the volume of the gas at 175 mL we use the Boyle's law formula

That's

P _1 V _1 = P _2 V _2

where

P1 is the initial pressure

V1 is the initial volume

V2 is the final volume

P2 is the final pressure.

Since we are finding the final pressure

P _2 =  \frac{P _1 V _1}{ V _2}

From the question

P1 = 0.935 atm

V1 = 250.0 mL

V2 = 175 mL

Substitute the values into the above formula and solve

That's

P _2  =  \frac{0.935 \times 250}{175}  \\  =  \frac{233.75}{175}   \\  = 1.33571

We have the final answer as

<h3>1.336 atm</h3>

Hope this helps you

8 0
3 years ago
Which of the following is not a possible energy conversion for electricity?
PilotLPTM [1.2K]

A is the correct answer

8 0
4 years ago
Which correctly lists three characteristics of minerals?
maria [59]

Answer:

The answer is A  hope this helps

Explanation:

6 0
4 years ago
Read 2 more answers
Given what you have learned about the hydrogen bonding shared between nucleic acids in dna, which pair is more stable under incr
Vinil7 [7]
Cytosine (C) and Guanine (G) are more steady under expanding heat since C and G have three hydrogen bonds while Adenine (An) and Thymine (T) have just two. The more hydrogen bonds there are, the more steady the nucleotides are. More bond dependability requires more warmth vitality to separate the securities, and since G≡C have more hydrogen securities than A=T, they are thusly more steady under expanding heat.
8 0
4 years ago
Other questions:
  • In the covalent compound C. He the Greek prefix used to represent the cation<br><br> is
    9·1 answer
  • how does the ground state electron configuration of the hydrogen atom differ from that of a ground state helium
    10·1 answer
  • Cavendish’s name for hydrogen gas was "inflammable air." The word inflammable means "to burn. "Why did Cavendish use this name?
    14·2 answers
  • Boiling point and melting point of a gas?
    8·1 answer
  • If atmospheric pressure measurement for taking at regular intervals from sea level to the stratopause The measurements with most
    10·2 answers
  • What is the change in enthalpy of the first reaction below, given the enthalpies of the other two reactions?
    8·1 answer
  • Which groups will lose electrons to satisfy the octet rule​
    5·1 answer
  • How many grams of NaOH (MW = 40.0) are there in 500.0 mL
    9·1 answer
  • For chem help plzzzz
    11·1 answer
  • What causes a fire tornado to form out of a wildfire??
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!