Answer:
All of the above
Explanation:
If an equation has only one reactant it is a____ reaction.
A. Synthesis
B. Decomposition
C. Double replacement
D. Single replacement
E. Combustion
Answer:
The answer ia B ( decomposition)
Select the correct answer
Giving brainliest
Answer:
I'm gonna say A and B
Explanation:
Not sure though
Hope I helped :)
help it's chemistry
Answer:
wavelength = wave velocity/frequency.
Explanation:
c
is a constant. It is usually given as
3.00
×
10
8
m/s or
3.00
×
10
10
cm/s rounded to three significant figures.
Wavelength is measured in meters, centimeters, nanometers, etc...).
Frequency has a unit of
1/s
which means
1
cycle per second. It is also given the unit Hertz (Hz) in honor of German physicist Heinrich Hertz who proved the existence of electromagnetic waves.
1
Hz
=
1/s
.
What is the wavelength of a light wave that has a frequency of 4.42 x 10^14 Hz?
Answer:4.42×10
14
x
Explanation:
what is soluminescence? How does it work?
Answer:
Sonoluminescence can occur when a sound wave of sufficient intensity induces a gaseous cavity within a liquid to collapse quickly. [...] The bubbles are very small when they emit the light—about 1 micrometer in diameter—depending on the ambient fluid (e.g., water) and the gas content of the bubble (e.g., atmospheric air).
Explanation:
Source is Google
I WILL GIVE BRAINLIEST TO YOU IF YOU ANSWER THIS (I KNOW THE ANSWER, SO IF YOU SOLVED WRONG, I WONT GIVE BRAINLIEST) SO YOU BETTER GIVE CORRECT ANSWER OR IM NOT GOING TO GIVE BRAINLIEST
Answer:
Corona Virus outbreak
Can radiation take place in solids, liquids, and gasses?
Answer:
Yes!
Explanation:
Liquids & gases are poor conductors, but they can make heat (thermal energy) travel quickly from one point to another. ... ~ When waves of heat (thermal energy) travel through empty space and transparent mediums, heat transfer by radiation occurs. Solids, liquids, & gases can all be heated by radiation.
Bye Have A Nice Day!What is better Music,Cartoons,Games,Anime,Knowledge Or Relaxation.
Answer:
anime
Explanation:
What is the correct name for the compound Li2S
Answer:
Lithium sulfide
The half-life of carbon-14 is about ____________ years.
Fill in the blank.
Answer:
5730 years
Explanation: for more on radiocarbon dating.) and hence explain why the amount of carbon-14 in the sample decays by half over any period of 5730 years.
How many different sublevels are in the third energy level?
A.3
B.4
C.1
D.2
the answer is a
Answer:
Its a
Explanation:
I got that answer on my own not from the Question ;)
One s-orbital is present in each sublevel of the primary energy level. There are 2 electrons in the s-orbital in total. When compared to other primary energy levels, the electrons in this orbital, known as s electrons, have the lowest energy. Here the correct option is A.
The fixed distances from an atom's nucleus where electrons may be found are referred to as energy levels (also known as electron shells). In an atom, the small, positively charged nucleus is surrounded by smaller, negatively charged electrons.
One s-orbital, three sets of p-orbitals, and five sets of d-orbitals make up the subshell of the third main energy level. S-orbitals can store a maximum of two electrons, p-orbitals six, and d-orbitals ten. One s-orbital is present in each sublevel of the primary energy level. There are 2 electrons in the s-orbital in total.
Thus the correct option is A.
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Explain What is an elementary reaction and how is it related to a reaction mechanism
Answer:
The sequence of individual steps, or elementary reactions, by which reactants are converted into products during the course of a reaction is called the reaction mechanism. The overall rate of a reaction is determined by the rate of the slowest step, called the rate-determining step.
Explanation:
1. Which best represents a compound?
Answer:
D
Explanation:
The one that best represents a compound is answer "D" because you compounds are chemically bonded and are always together.
What is another name for energy lost through heat and sound?
Answer:Figure 1. Energy losses in an incandescent light bulb are very large; most of the input energy is lost in the form of heat energy. This means that when energy is converted to a different form, some of the input energy is turned into a highly disordered form of energy, like heat. ...
Explanation:
what is the electron configuration for lithium
Answer:
2,1
Explanation:
the electron configuration is 2s1
What is the wavelength of radiation whose frequency is 1.56 x 10^12 Hertz?
Answer:
1.92×10¯⁴ m
Explanation:
From the question given above, the following data were obtained:
Frequency (f) = 1.56×10¹² Hz
Wavelength (λ) =?
Frequency and wavelength of a wave are related by the following equation:
v = λf
Where
'v' is the velocity of light with a constant value of 3×10⁸ m/s.
'λ' is the wavelength
'f' is the frequency.
Thus, we can obtain the wavelength of radiation by using the above formula as illustrated below:
Frequency (f) = 1.56×10¹² Hz
Velocity (v) = 3×10⁸ m/s.
Wavelength (λ) =?
v = λf
3×10⁸ = λ × 1.56×10¹²
Divide both side by 1.56×10¹²
λ = 3×10⁸ / 1.56×10¹²
λ = 1.92×10¯⁴ m
Therefore, the wavelength of the radiation is 1.92×10¯⁴ m
1375 J of heat energy are added to a 50.0 g sample of copper, which increases temperature from 22.8 C to 94.2 C. Calculate the specific heat of copper.
Answer:
0.385 J/g°C
Explanation:
Using the following formula, the specific heat of an elemental substance can be calculated:
Q = m × c × ∆T
Where;
Q = quantity of heat (J)
m = mass (g)
c = specific heat capacity (J/g°C)
∆T = change in temperature (°C)
Based on the given information, Q = 1375J, m = 50g, initial temperature = 22.8°C, final temperature = 94.2°C, c =?
Q = m × c × ∆T
1375 = 50 × c × (94.2 - 22.8°C)
1375 = 50 × c × 71.4
1375 = 3570c
c = 1375/3570
c = 0.3851
c = 0.385 J/g°C
What order do they go in plz someone help
would dissolving sugar in water be a physical or chemical change
Answer:
Physical!!!!!
Good Luck!
Explain what makes a cirrus cloud.
Answer:
the answer is below
Explanation:
Cirrus clouds form from the ascent of dry air, making the small quantity of water vapour in the air undergo deposition into ice (to change from a gas directly into a solid). Cirrus is made up completely of ice crystals, which provides their white colour and form in a wide range of shapes and sizes.
help me please !! is it A,B,C, or D ???
Please help... awarding 20 points and brainiest if correct.
Answer:
CH4
- 4 electron
- 0 electron
- the geometry of Ch4 is tetrahedral
AlF3
- 3 electron
- 0 electron
- the geometry is trigonal planar
CCl4
- 4 electron
- 0 electron
- the geomotry is tetrahedral
SeH2
- 2 electron
- 2 electron
- the geometry is V shape
If the principal quantum number is n = 3, what are the name(s) of the subshells?
S
sp
spd
spdf
The name(s) of the subshells are s,p and d
Further explanationEach orbital in an atom consists of 4 quantum numbers
n is the principal quantum number.
l is the angular momentum / azimuthal quantum number
ml, the magnetic quantum number
ms, the electron-spin quantum number
Value of n: positive integer
value of l: s = 0, p = 1, d = 2, f = 3 , ..(n-1)
ml value: between -l to + l
ms value: +1/2 or -1/2
n=3, then the possible value of l is a maximum of n-1 = 3-1 = 2
So the value of subshells = 0,1 and 2
Answer:
C - s, p, d
Explanation:
What is the second life cycle stage during complete metamorphosis of insects?
O A) The eggs hatch into larvae.
OB) The eggs hatch into nymphs.
OC) Nymphs stop molting and are adult sized.
OD) Larvae make hard, protective cases around themselves during the pupal stage.
Answer:
They hatch into larvae.
Explanation:
A student wants to investigate competition between two organisms. For the investigation, it
is most important that the student should choose organisms that
O require the same resources.
O reproduce at the same rate.
O are both active during the day.
o have the same adaptations.
(help please!!! due today!!!)
Answer:
i think that the answer is B
Explanation:
If a student wants to investigate competition between two organisms in an ecosystem the organisms should have same adaptations and use same resources.
What is an ecosystem?Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.
Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.
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3. What is the electron configuration of the following elements?
Lithium
Calcium
Copper
Strontium
Potassium
sodium
Answer: Lithium ( 3),Calcium (20),Copper (29),Strontium (38),Potassium (19),Sodium (11)
Explanation:
20 mL of a gas at 200K is heated until the new volume is 55 mL. What is the final temperature of the gas?
answer options:
4.0 K
5.5 K
400K
550 K
Answer:
550 K
Explanation:
Given the following data;
Original Volume, V1 = 20mL
Original Temperature, T1 = 200K
New Temperature, V2 = 55mL
To find new temperature T2, we would use Charles' law.
Charles states that when the pressure of an ideal gas is kept constant, the volume of the gas is directly proportional to the absolute temperature of the gas.
Mathematically, Charles is given by;
[tex] VT = K[/tex]
[tex] \frac{V1}{T1} = \frac{V2}{T2}[/tex]
Making T2 the subject of formula, we have;
[tex]T_{2} = \frac{V2}{V1} * T_{1}\\[/tex]
Substituting into the equation;
[tex]T_{2} = \frac{55}{20} * 200\\T_{2} = \frac{11000}{20}\\T_{2} = 550K[/tex]
Therefore, the new temperature is 550K.
Question 2
1 pts
Which of the following bonding types requires a TRANSFER of valence
electrons between two or more atoms?
Covalent
o lonic
Hydrogen
O Metallic
Answer:
I want to say its Lonic Bonding.
Explanation:
Ionic bonding is the complete transfer of valence electron(s) between atoms.
Please answer fast!!!!!!!The table shows the distance that car 2 traveled during three trials. What is the average distance traveled by car 2 without a bumper? Be sure to show your work.
Trial 1 Trial 2 Trial 3
25, 27, 29
Answer: 25 + 27 + 29 = 81
81 divided by 3 = 27
your answer is 27
Explanation: you add them all together then however many numbers there are is how you divide it
Answer:
81 and 27 i think
Explanation:
Substances like neon , which is a gas at room temperature and pressure, can often be liquified or solidified only at very low temperatures. At a pressure of , does not condense to a liquid until and does not freeze until . What are the equivalent absolute temperatures?
Answer:
Condenses at 27.25K.
Freezes at 24.65K.
Explanation:
In order to solve this above question, there is is need to make use of the following equation. The main idea here is to convert degree celsius to Kelvin. Hence,
0°C + 273.15 = 273.15K---------------------(1).
Therefore, we will make use of the above equation (1) and slot in the values for at degree celsius at which it condenses and at degree celsius at which it freezes.
So, we have at temperature at which it condenses:
-245.9°C + 273.15 = 27.25K.
Also, we have at temperature at which it freezes.
-248.5°C + 273.15 = 24.65K.