Answer:
kinetic energy
Explanation:
Which of these is the subject of study in thermodynamics? a) energy changes b) only physical changes 3) only chemical changes 4) structure of atoms and molecules
Answer:
a
Explanation:
The main subject of study in thermodynamics is the energy changes in a reaction or a system.
Generally speaking, thermodynamics is a branch of science that deals with the study of heat, work, temperature, and the energy of systems and how this energy is converted from one form to another. The subject of thermodynamics is governed by a series of laws known as the law of thermodynamics.
The correct option is a.
Which statement best describes the organization of the periodic table of the elements
Answer:Elements within a period have the same number of electrons.
Carla is making two drinks. She is making one hot chocolate and one chocolate milk. Which best describes the agitation needed to make sure the cocoa powder is mixed in well? Chocolate milk would require more agitation than hot chocolate does. Hot chocolate would require more agitation than chocolate milk does. They would both require the same agitation. Neither would require any agitation.
Chocolate milk would require more agitation that hot chocolate dose.
Answer:
a
Explanation:
what is the atomic number of helium
Answer:
2
Explanation:
Its atomic number is 2, so it has two protons in its nucleus.
Answer:
2
Explanation:
The atomic number for helium is 2.
How far is the Moon from Earth? Where will it be relative to its current location 100 years from now?
The moon is 150 inches far from the earth to its current location 100 years from now.
What is earth ?Only one celestial object, Earth, which is third from the Sun, is known to support life. Although the Solar System contains enormous amounts of water, only Earth is home to liquid surface water. The oceans cover around 71% of Earth's surface, dwarfing its lakes, rivers, and polar ice.
Because Earth was never an unknown entity to mankind, it was never properly "discovered." Its shared status as a "planet" with other bodies, nevertheless, was just recently discovered.
The moon travels around 251,000 miles from Earth during its apogee, or farthest point from our planet. Solar eclipses that have an annular shape, or a "ring of fire," are among the best examples of apogee in nature.
Thus, the moon is 150 inches far from the earth to its current location 100 years from now.
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Rhonda watched a video taken by a camera that was lifted into the upper atmosphere by a weather balloon. She saw the balloon pop when it reached a certain height. Afterward, Rhonda wondered what effect the air pressure at high altitudes has on the volume of gas in balloons.
Answer:
This question is incomplete; the complete part is: What scientific practice is Rhonda performing?
The answer is ASKING A QUESTION FROM AN OBSERVATION
Explanation:
The SCIENTIFIC METHOD is used for scientific investigations. The scientific method is composed of sequential steps which scientific investigations follow. The steps are:
- Asking a question/Make an observation
- Formulating a hypothesis
- Testing the hypothesis
- Analysing the result
- Conclusion
Asking a scientific question is done after making an observation about an occurrence. In this question, Rhonda wondered what effect the air pressure at high altitudes has on the volume of gas in balloons after watching a video taken by a camera that was lifted into the upper atmosphere by a weather balloon. This illustrates that Rhonda is ASKING A QUESTION FROM AN OBSERVATION.
The model below shows a carbide ion. 8 light grey and 6 dark grey balls sit at the center with 2 concentric black rings around them. The inner ring has 2 medium grey balls on it, and the outer ring has 8 medium grey balls on it. At bottom, a dark grey ball = +1, a light grey ball = 0, a medium grey ball = negative 1.
Answer:
Explanation:
The question wants us to determine what could be done to change the carbide ion to a neutral carbon atom.
From the given information:
The dark grey ball has a +1 charge, which implies that the positive charge is the proton. Also, the light grey ball is denoted by 0 charge, which signifies that it is a neutron because a neutron usually has no charge, and its mass is equal to the mass of the proton.
Consequently, the -1 charge on the medium grey ball signifies that it is an electron.
In a neutral atom, the number of protons usually equal to the electron number. However, in as much as no overall charge is present from the model of the atom given. We can say that the atom is neutral.
Let also recall that the atomic number is the number of available protons present in the element's atomic nucleus.
Thus, in the given atom.
The total number of proton = 8
The total number of neutron = 9
The total number of electron = 8
Since atomic number relates to the number of protons, the atomic number is also = 8
Answer: C :)
remove 4 electrons
Explanation:
good luck
What defines our current ‘standard' for one meter? A The distance equal to 1/10,000,000 the distance between the Equator and North Pole b The length of a pendulum arm that takes 1 second to swing from left to right c The distance a 1 kilogram object travels in one second when acted on by a force of 1 newton d The distance light travels in a tiny fraction of a second
Answer:
The distance light travels in a tiny fraction of a second
Explanation:
One meter is defined as the length of the path travelled by light in a vacuum in [tex]\dfrac{1}{299 792 458}[/tex] of a second. It is also equal to the one [tex]\dfrac{1}{10}[/tex] of the distance from the equator to the North Pole. It is one of the fundamental units. It is a SI unit of length. So, the standard definition of 1 mete is the distance light travels in a tiny fraction of a second.
Hence, the correct option is (d).
Question 1 (5 points)
In the image below, if the frisbee represents light, what does the fence represent?
Answer: a vacuum
Explanation: light travel as a wave but unlike sound waves or water it doesn’t need any matter or material to carry its energy along.this means that light can travel through a vacuum which means a completely airless space the wall is vacuum :) hope this helped
Which statement about the quantum mechanical solution for the hydrogen atom is incorrect?
A) the angular momentum quantum number l = 1 corresponds to the d sub shell
B) theoretically the n quantum number can go to infinity
C) the ms quantum number is always a fraction
D) the ml quantum number can have a positive or negative value
Answer:
A) the angular momentum quantum number l = 1 corresponds to the d sub shell
Explanation:
The values of the subsidiary, azimuthal or orbital quantum number l are 0,1,2,3 corresponding to s, p, d,f.
This implies that;
when l= 0 we have the s subshell
when l=1 we have the p subshell
when l= 2 we have the d subshell
when we have l=3 we have the f subshell
We can clearly see from this analysis above that option A is wrong.
Ethan filled 10 cups of the same size with equal amounts of water. He divided the cups into five groups of two cups each. The groups were placed in five different locations around his house. After two weeks, he measured the remaining water to determine how much had evaporated, by measuring how much water remained in each cup.
The question is incomplete, the complete question is;
Ethan filled 10 cups of the same size with equal amounts of water. He divided the cups into five groups of two cups each. The groups were placed in five different locations around his house. After two weeks, he measured the remaining water to determine how much had evaporated, by measuring how much water remained in each cup.
What is the dependent (data) variable?
A. Location of cups
B. Amount of time they were left in locations
C. Amount of evaporated water
D. Size of cups
Answer:
C. Amount of evaporated water
Explanation:
The dependent variable is the outcome that is measured or observed in an experiment. In this case, the variable that is being observed is the amount of water left in each cup.
Depending on its location, the amount of water in different locations may not be the same. Therefore, the amount of water left in each cup is regarded as the dependent variable here.
What did you include in your response? Check all that apply. t represents time, which is the input of the function. h(t) represents the altitude, which is the output of the function. After 10 minutes, the hot air balloon is at 60 feet.
Answer:
t represents time, which is the input of the function.
h(t) represents the altitude, which is the output of the function.
After 10 minutes, the hot air balloon is at 60 feet.
Explanation:
Given the function; h(t) = 210 - 15t models the altitude of a hot air balloon over time t, in minutes.
It follows that;
t represents time, which is the input of the function.
h(t) represents the altitude, which is the output of the function.
To obtain h(10), we have;
h(10) = 210 - 15(10)
h(10) = 60 feet
A Lewis dot diagram
a.will always have a maximum of eight electrons.
b.contains only valence electrons.
c.represents the number of neutrons in that particular isotope.
d.none of the above.
Answer:
b. contains only valence electrons.
Explanation:
In Lewis dot diagram valence electrons are shown by the dots around the symbol of an atom. Consider the example of sodium fluoride.
Electron dot diagram is attached below.
Sodium is alkali metal and present in group one. It has one valence electron. All alkali metal form salt when react with halogens.
Sodium loses its one electron to get stable. While all halogens have seven valence electrons they need only one electron to get stable electronic configuration.
When alkali metals such as sodium react with halogen fluorine it loses its one valence electron which is accepted by fluorine and ionic bond is formed. The compound formed is called sodium fluoride.
Na + F → NaF
Occurs when a new organism is formed from the same organism
A. Cellular asexual Reproduction
B. Regeneration
C. Budding
Answer:
C) Budding
Explanation:
Budding is define as when a new organism is formed from the same organism is known as Budding
How are Chemicals labeled on the periodic
table? Explain.
Answer:
The periodic table is a tabular array of the chemical elements organized by atomic number, from the element with the lowest atomic number, hydrogen, to the element with the highest atomic number, oganesson. The atomic number of an element is the number of protons in the nucleus of an atom of that element.
2.
State the purpose of physical and chemical properties
.
Answer: chemical
Explanation: Chemical changes and physical changes keep it the same.
Consider a balloon that has a volume V. It contains n moles of gas, it has an internal pressure of P, and its temperature is T. If the balloon is heated to a temperature of 15.5T while it is placed under a high pressure of 15.5P, how does the volume of the balloon change? It doubles. It stays the same. It increases greatly. It decreases slightly.
Answer:
It stays the same
Explanation:
From the gas law:
P1V1/T1 = P2V2/T2
P1 = P, V1 = V, T1 = T and P2 = 15.5P, V2 = ? , T2 = 15.5T
Substituting the various variables into the gas law equation:
PV/T = 15.5PV2/15.5T
Make V2 the subject of the formula:
V2 = 15.5TPV/15.5PT
V2 = V.
V1 = V and V2 = V, hence, the volume of the balloon stays the same.
Answer:
It stays the same
Explanation:
Edge 2020
Which element is the MOST stable based on its electron configuration?
A
fluorine
B
sulfur
C
sodium
D
argon
Answer:
A. fluorine
Explanation:
hope this helps
have a good day
stay safe byee
The element that is most stable based on its electron configuration is argon. The correct option is D.
What is electronic configuration?The electron configuration of any atom or molecule in atomic or molecular orbitals is renowned in atomic physics and quantum chemistry.
Noble gases have a stable ns2np6 configuration with their octet completely filled, giving them stability. There is one exception: helium.
The electron configuration is commonly used to describe an atom's orbitals in its ground state, but it can also be used to represent an atom that has ionized into a cation or anion by compensating for electron loss or gain in subsequent orbitals.
8A Group Noble and inert gases The noble gases of Group 8A (or VIIIA) of the periodic table are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn).
Thus, the correct option is D.
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ANSWER FAST! MARKING BRAINLIEST!
This system insulates and protects earth and its lifeforms by trapping thermal energy from the sun that bounces back from earths surface
A- Atmosphere
B- Hydrosphere
C- Geosphere
The answer is B hydro sphere
22 mL of soybean oil is diluted to 50 mL volume in a graduated cylinder. What is the percent oil by volume? Show your work for full credit
Answer:
44
Explanation:
multiply 22 x 2, and 50 x 2, so 50 x 2 would be 100 and 22 x 2 would
be 44.
Plz help me with the blanks on balancing numbers-chemistry
Answer:
(NH4)2Cr2O7 → N2 + 4 H2O + Cr2O3
Hope this helps :)
What is the best description of molecule b in this diagram?
Answer:
B. Adenosine diphosphate
Explanation:
You already have the right answer ^^
Help me label the words please thank you
Answer:crust, outer core, inner core, mantle
Explanation:
10^9, 10^3, and 10^1 represent what prefixes
Answer:
Common prefixes, i.e., 10
A 16 L sample of gas is under a pressure of 4.6 atm. What will be the pressure of the gas when the volume increases to 20 L? Assume the temperature is held constant.
Answer:
P₂ = 3.68 atm
Explanation:
Given data:
Initial volume of sample = 16 L
Initial pressure = 4.6 atm
Final pressure = ?
Final volume = 20 L
Solution:
The given problem will be solved through the Boly's law,
"The volume of given amount of gas is inversely proportional to its pressure by keeping the temperature and number of moles constant"
Mathematical expression:
P₁V₁ = P₂V₂
P₁ = Initial pressure
V₁ = initial volume
P₂ = final pressure
V₂ = final volume
Now we will put the values in formula,
P₁V₁ = P₂V₂
4.6 atm × 16 L = P₂ × 20 L
P₂ = 73.6 atm. L/ 20 L
P₂ = 3.68 atm
Look at the pic below. click on the location of the ATOMIC NUMBER
16
S
sulfur
32.065
^
this is tha pic
What is the volume of a solution that has a specific gravity of 1.2 and a mass of 185 g?
What is the definition of half-life
Answer:
the time taken for the radioactivity of a specified isotope to fall to half its original value.
Explanation:
Why do we sweat more when we exercise rigorously?
Sweating helps you cool down and prevent you from overheating mark me brainliest plz
Explanation:
An ionic bond is held together by an electrostatic between what two types of elements?
metal and nonmetal atom
metal atoms only
cations
nonmetal atoms only
