Answer:
23.3 g/mol
Explanation:
The molar mass of 18.12 g of gas exerts a pressure of 3.05 atm on the walls of a 5.85 L container at 280 K is 23.3 g/mole.
What is the molar mass?Molar mass is the concentration of a substance that is present in a specific liquid. It is also called the concentration of a substance.
The molar mass can be calculated by the formula of an ideal gas:
PV = nRT
P is the pressure
V is the volume
n is the number of moles
R is the constant of gas.
T is the temperature.
The given amounts are the molar mass of 18.12 g.
The pressure is 3.05 atm.
The volume is 5.85 L
The temperature is 280 K
Putting the value in the equation
n = PV/RT = (3.05) (5.85) / (0.0821) (280) = 0.777 moles of gas
Molar mass = 18.12 g/0.777 moles = 23.3 g/mole
Thus, the Molar mass is 23.3 g/mole.
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plsss helpp
will mark brainliest!!!
Answer:
high melting point
Explanation:
high melting point
Question 4 of 33
C
Q-Science-Gr7-SQSA1-CBT (2020-21)
Question: 1-4
Dead sean animals fall to the bottom of the ocean. A scientist notices rock layers that have formed on the ocean bottom with fossils of some of these animals. What type of rock
1.Lava
2.igneous
3.sedimentary
4.metamorphic
Answer:
The answer is Sedimentary
Explanation:
Thank you so much if that helps you!!!!
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.
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)
Explain how Earth is heated through radiation
Answer:
Radiation happens when heat moves as energy waves, called infrared waves, directly from its source to something else. This is how the heat from the Sun gets to Earth. In fact, all hot things radiate heat to cooler things. When the heat waves hits the cooler thing, they make the molecules of the cooler object speed up.
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:
All of the different organisms interacting in a pond make up
1.) a community
2.)the water cycle
3.) a population
4.) the habitat
Answer:
they would make up a population
Explanation:
all the inhabitants of a particular town, area, or country.
the population of frogs are very difficult to catch
1. Carson completed conductivity testing on the solutions shown in the data table below and recorded his findings in the conductivity column. After determining which solutions conducted electricity and which solutions did not conduct electricity, Carson needs to explain his findings so that he can make predictions about conductivity in the future without having to complete the testing. Why do some of the solutions conduct electricity and some of the solutions not conduct electricity?
Results of conductivity testing: image
Consider Carson's findings, then make a claim to answer the question. Be sure to support your claim with sufficient evidence and reasoning.
Answer:
See below :)
Explanation:
There is an evident reason why some of the solutions Carson's has listed and observed, does conduct electricity and some that do.
A flow of electrical charge is called an electric current. Ions are atoms, or sets of atoms, that contain an electrical charge. There are two types of ions, cation or a positively charged ion containing a deficiency of electrons, and anion or a negatively charged ion which contains a surplus of electrons. When a solution conducts electricity the charge is carried within by ions that move through the solution. The larger the number of ions in the solution, the better the conductivity of the solution is. Pure water does not conduct very well because it contains very few ions, but when table salt (NaCl) is dissolved in the water, this solution does conduct well because the solution contains a more abundance of ions. The majority of the ions come from the table salt, chemically names sodium chloride. Because Sodium contains its sodium ions, and these are positive charge and chloride ions which is a negative charge, it is called an ionic substance. Not every substance is made up of ions, one such example is sugar (C12H22O11). Sugar is made up of uncharged particles also called molecules. Although sugar is a substance its molecules do not hold a charge, thus when sugar is dissolved in water, the solution does not conduct electricity, due to the lack of ions in the solution.
Therefore, depending on the ions that make up the compound, the substance would or would not conduct electricity.
Which of the following happens to the particles when the temperature of liquid water drops?
kinetic energy decreases
kinetic energy increases and then decreases
kinetic energy increases
kinetic energy stays constant
Answer:
The Kinetic energy decreases
Explanation:
because the speed of the molecules slows down.
The three types of symbiosis are ___ and ___
Answer:
mutualism,commensalism and parasitism
Answer:
mutualism, commensalism, and parasitism
Which class of organic compound is most likely to be used in anesthetics?
ether
ester
alkyl halide
carboxylic acid
Answer:
A.ether
Explanation:
i got it right on edg 2020 and they use ether in pokemon games to heal PP so that makes logical sense lol
The class of organic compounds that are used in anesthetics is:
A. Ether
It is a functional group consisting of C and O.
What are Anesthetics?Anesthetics are an assorted gathering of medications with especially unique synthetic designs, going from basic inorganic atoms like nitrous oxide to additional perplexing natural specialists.
Organic compound is one that contains a bond with a carbon particle. In ethers, the practical gathering that is available is C=O. Ether, as a fluid, discharges fumes that are breathed in. Another very powerful fluid sedative is propofol, controlled intravenously.
Thus, correct option is A.
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would dissolving sugar in water be a physical or chemical change
Answer:
Physical!!!!!
Good Luck!
HELPPP 20POINTS!!
1. How many moles of potassium contain 3.6 x 10^23 atoms of potassium?
A. 0.600 x 10^24 mol
B. 0.600 x 10^23 mol
C.0.600 mol
D. 22.3 mol
Answer:
0.600 is yourr answer and if wrong sorry
Explanation:
0.600 mol of potassium contain [tex]3.6 * 10^{23}[/tex] atoms of potassium.
C. 0.600 mol
What is one mole?A mole is the amount (10) of material containing [tex]6.022*10^{23}[/tex] particles . This number is also called Avogadro's number.
Given:
Atoms of potassium = [tex]3.3*10^{23} atoms[/tex]
To find:
Moles of potassium =?
As we know,
[tex]1 mole = 6.022*10^{23} atoms\\\\1 atom = 1 / 6.022*10^{23} mole\\\\3.3*10^{23} atoms = 1 / 6.022*10^{23} mole * 3.3*10^{23} atoms\\\\3.3*10^{23} atoms=0.600 mol\\\\[/tex]
Thus, 0.600 mol of potassium contain [tex]3.6 * 10^{23}[/tex] atoms of potassium.
Therefore, option C is correct.
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Oxygen's atomic number is 8. This means that an oxygen atom has
*
2 poin
8 neutrons in its nucleus
a total of 8 protons and neutrons
8 protons in its nucleus
a total of 8 neutrons and electrons
Answer:
8 protons in its nucleus
How many grams are in a 3.1E21 atom sample of vanadium
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
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:
An electric current is passed through a sample of water, causing the
sample to break down into oxygen and hydrogen. Given this information,
what is the correct classification of water?
Answer:
A compound
Explanation:
The water is best classified as a compound. When a substance is broken down into elemental composition or units, they are said to be a compound.
An element is a distinct substance that cannot be split up into simpler substances. Compound are substances composed of two or more kinds of atoms joined together in a definite grouping. The properties of compounds are distinct and different from those of the individual elements that are combined in its make - up. So, the water when broken down to elements is a compound.Can someone please help me by answering this question??
Answer: 12N IT IS JUST MATH
Match each term with the correct description below.
1. what is a charged atom that has gained one or more electrons?
2. What substance is held together by ionic bonds?
3. What metal and nonmetal transferrers electrons?
4. What particle has electrons that are shared unequally?
5. What forms when atoms share electrons by covalent bonds?
6. What two nonmetals share electrons?
7. What charge atom that has lost one or more electrons?
8. What two or metals "pooling" electrons?
a. metallic bond
b. covalent bond
c. anion
d. ionic bond
e. molecule
f. cation
g. compound
h. polar molecule
Answer:
1. anion
2. compund
3. ionic bond
4. polar molecule
5. molecule
6. covalent bond
7. cation
8. metallic bond
Explanation:
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
Select the correct answer
Giving brainliest
Answer:
I'm gonna say A and B
Explanation:
Not sure though
Hope I helped :)
what is the electron configuration for lithium
Answer:
2,1
Explanation:
the electron configuration is 2s1
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 better Music,Cartoons,Games,Anime,Knowledge Or Relaxation.
Answer:
anime
Explanation:
True or False Gases do have a definite shape and volume.
Answer:
false
Explanation:
Answer:
False
Explanation:
It is false as the particles of gases keep moving. They have very weak molecular bonds. They are so weak that they can move freely anywhere and in any direction. Even if you trap some gases and a closed bottle, they keep moving. We can't measure what the shape is or what the volume is. Therefore, it is false.
Hope this is helpful and mark it Brainliest if possible! Good Luck!!!
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:
Which air is driest? Air Temp 30F Dew-point 29F, Air Temp 77F Dew-point 19F, Air Temp 66F Dew-point 60F, or Air Temp 50F Dew-point 36F
Answer:
Air Temp 77F Dew-point 19F
Explanation:
Quiz
The dew point can be described as the temperature required by the air to be cooled. The driest air will have a higher dew point, therefore, at an air temperature of 66°F and a dew point of 60°F. Therefore, option (C) is correct.
What is dew point?The dew point can be defined as the temperature at which air should be cooled to become saturated with water vapor assuming constant air pressure and water content.
Moisture capacity will decrease below the dew point. Airborne water vapor will condense to form liquid water or dew. Dew develops on the surface and occurs through contact with a cooler surface.
The dew point is called the frost point when the temperature is below the freezing point because frost is produced by deposition rather than a condensation of water.
The humidity also impacts the dew point. The dew point increases when there is higher moisture in the atmosphere. Therefore, the higher dew point refers to less humid air or drier.
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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.
I need help (yes again)
Answer:
with what?
Explanation: