Answers
Answer:
Potassium (K) has 19 protons.
Each neutral atom of Potassium has 19 electrons.
Explanation:
A) Potassium has 19 protons because the atomic number tells us how many protons are in an atom of the element. (The atomic number is the number above the element symbol. For example, the number above "K" is 19, which is the atomic number).
B) If an atom is neutral, this means that the atom has neutral energy. Protons give positive energy and electrons give negative energy. For the atom to be neutral, the atom must have balanced energy, therefore, making the number of electrons equal to the number of protons in a neutral atom.
Related Questions
1. Which has the greater blue or indigo light?
Answers
Answer:
Indigo wavelength is between
420
and
450
nm.
Blue wavelength is between
450
and
495
nm.
So blue has a greater
λ
than indigo.
Explanation:
Answer:
Indigo has greater frequency.
Have a great day!
Question 3 of 10
What is thermodynamics?
O A. The study of the transfer of hot and cold energy
B. The study of the movement of energy and heat
C. The study of kinetic energy and potential energy
D. The study of the conservation of matter and energy
Answers
Answer:
B
Explanation:
the branch of physical science that deals with the relations between heat and other forms of energy (such as mechanical, electrical, or chemical energy), and, by extension, of the relationships between all forms of energy.
Answer:
B
Explanation:
which element has the highest electrical conductivity (h) (Mg) (CL) (He)
Answers
4. He
Conductivity is the measure of the ease at which an electric charge or heat can pass through a material.A conductor is a material which gives very little resistance to the flow of an electric current or thermal energy.Electrical conductivity tells us how well a material will allow electricity to travel through it.Usually metals are good conductors of electricity.1. Chlorine is a non metal thus it will have the lowest electrical conductivity.
2. As a plasma, helium's electrons and protons are not bound together, resulting in very high electrical conductivity, even when the gas is only partially ionized.
3. Hydrogen is also electrically conductive above certain temperatures.
4. Since, magnesium is a metal thus it is also electrically conductive in nature but less than hydrogen and helium.
Therefore, Helium will have the highest electrical conductivity.
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why aren't granite, copper, or petroleum found everywhere on earths surface
Answers
Answer: The distribution of natural resources depends upon many physical factors like land, climate and altitude. The distribution of resources is unequal because these factors differ from place to place on this earth.
Many physical factors, such as land, climate, and altitude, influence the distribution of natural resources. Because these factors differ from place to place on this planet, the distribution of resources is unequal.
What is earth surface ?The Earth's surface is defined as the part of the water or land that comes into contact with the air above it. The surface is the part of the Earth with which we interact. The crust is the rock layer that surrounds the Earth's mantle. The crust encircles the entire planet, including the ocean floor.
The crust is the planet's surface, where we live; it's actually a very thin layer, only 70 kilometers thick at its thickest point.
Petroleum is formed by the same geological process that creates sedimentary rock. The geological processes that create rocks and natural resources such as granite and copper do not occur everywhere on Earth and take a long time to form. This explains why granite and copper aren't found everywhere on the planet.
Thus, Because these factors differ from place to place on this planet, the distribution of resources is unequal.
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about how many days from a full moon, a 3rd quarter moon?
A. 1
B. 7
C. 15
D. 30
Answers
When elements bond, what is the part of the atom doing the bonding?
Answers
Answer:
the valance electrons
Explanation:
The amplitude of a wave is the distance between a point on one wave and the identical point on the next wave T or F?
Answers
It is false that the amplitude of a wave is the distance between a point on one wave and the identical point on the next wave.
What is amplitude?The maximum displacement or distance moved by a point on a vibrating body or wave measured from its equilibrium position, as defined in physics. It is one-half of the length of the vibration path.
The energy of the disturbance that causes the wave determines the amplitude of the wave. The amplitude of a wave caused by a more energetic disturbance is greater.
A wave's amplitude is the distance from the center line to the top of a crest or the bottom of a trough.
The amplitude of a wave is the height of the wave measured from its highest point to its lowest point. The length of a wave from one peak to the next is referred to as its wavelength.
Thus, the given statement is false, as the definition is of wavelength and not of amplitude.
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Choose whether each statement is a scientific hypothesis, theory, or law. The pressure a gas exerts on a container increases as the temperature increases because the particles in the warmer gas move faster and collide with the walls of the container with more force.
Answers
Answer:
1) theory
2) law
3) hypothesis
Explanation:
edge 2021
A scientific hypothesis is a proposition that can be determined by experiments. If the gas container is heated, then the pressure inside will increase as shown by the hypothesis.
What is a scientific theory?A scientific theory is a statement that has been tested by a thorough experiment and by following the experimental procedure to evaluate the results. The increase in temperature increases pressure because particle moves rapidly shown in theory.
A scientific law is a statement that is proven true by repeated experiments. As the temperature of the gas increases the pressure also increases showing the law of the ideal gas equation.
Therefore, scientific theory, law, and hypothesis are different.
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If a dozen cookies weighs 600 grams, how much does each cookie weigh? *
Answers
Answer:
50 grams
Explanation:
If I drives 45 meters to school in 87.6 seconds what is my velocity
Answers
Answer this and I will mark brainliest. How did the Intolerable Acts benefit British Citizens?
Answers
Answer:
The Intolerable Acts were punitive laws passed by the British Parliament in 1774 after the Boston Tea Party. The laws were meant to punish the Massachusetts colonists for their defiance in the Tea Party protest in reaction to changes in taxation by the British Government.
Explanation:
Answer:
the Intolerable Acts were punitive laws passed by the British Parliament in 1774 after the Boston Tea Party. The laws were meant to punish the Massachusetts colonists for their defiance in the Tea Party protest in reaction to changes in taxation by the British Government.
Explanation:
What’s the difference between directly
proportional and inversely proportional.
Answers
Answer:
Directly proportional:
A proportion of two variable quantities. when the ratio of two quantities are constant.
inversely proportional:
when one value decreases at the same rate that the other increases.
Explanation:
I hope this does help you, have a great day. :)
Help pls, it's a test about fossils?
Looking at the diagram below, how it is known that the environment changed over time?
A. They are all predators.
B. The organisms gradually become herbivores.
C. At some point, the land was covered in water.
D. The organism gradually become simpler beings.
Answers
Answer:
C. At some point, the land was covered in water.
Explanation:
In the diagram it shows the different fossil layers. In the bottom layers there are shells, but as you go up the fossils start changing. This shows that there used to be water there, but now it is land.
what happens if i give all my points on my next question?
Answers
Answer:
you wont be able to ask any more questions until you answer some bc you get points from answering questions but you loose points when you ask them
Explanation:
Answer:
Good thing:)
The Bermuda Triangle, also known as the Devil's Triangle, is a loosely defined region in the western part of the North Atlantic Ocean where a number of aircraft and ships are said to have disappeared under mysterious circumstances. Most reputable sources dismiss the idea that there is any mystery.Bermuda TriangleDevil's TriangleWhat is the name of the formula compound made of sodium and chlorine
Answers
Answer:
NaCl
Sodium chloride
Explanation:
In which part of a plant cell does photosynthesis occur?
Answers
Answer:
leaves,Hope it helps....⋋✿ ⁰ o ⁰ ✿⋌(・o・)
Venus is the second planet from the Sun. It takes about 225 days for it to complete one revolution. What would make Venus have a longer revolution?
if Venus rotated slower
if Venus were closer to the Sun
if Venus rotated faster
if Venus were farther away from the Sun
Answers
Answer:
if venus were farther away from the sun
Explanation:
it is because far the planet is long the orbit is which make revolution longer
1. Calculate the percent oxygen in H2SO4.
Answers
PLS HELP ME
1)Which elements are involved in Metallic bonding? ____________
2)How do valence electrons behave in Metallic bonding?_________
3)Provide examples of Metallic bonding in your daily lives. _______
Answers
Answer:
1.) Metals are the only substances that use metallic bonds among their atoms. While many elements are commonly known as metals, including iron, aluminum, gold, silver and nickel, metals include a variety of other elements as well. 2.) In metallic bonds, the valence electrons from the s and p orbitals of the interacting metal atoms delocalize. That is to say, instead of orbiting their respective metal atoms, they form a “sea” of electrons that surrounds the positively charged atomic nuclei of the interacting metal ions.
Explanation:
3.) Metallic bonding is utilized for its conductive properties to help transfer electricity throughout a house via copper wiring.
Name ways we use technology in inner and outer space
8th grade science btw
Answers
Answer:
Explanation:
Many common everyday services such as weather forecasting, remote sensing, satellite navigation systems, satellite television, and some long-distance communications systems critically rely on space infrastructure. ... Of the sciences, astronomy and Earth science benefit from space technology am in 6th grade btw
What would be the product or products of the reaction of LEAD OXIDE with NITRIC ACID
Answers
I hope it helps you ❤️❤️❤️
Answer:
lead oxide =PbO
Nitric acid =HNO3
Pbo+2HNO3=Pb(No3)2+H2O
hope it is right answer for it!!
Which statement about plants is the most accurate?
Group of answer choices
(A) Plants undergo both photosynthesis and cellular respiration
(B) Plants undergo neither photosynthesis nor cellular respiration.
(C) Plants undergo photosynthesis but not cellular respiration.
(D) Plants undergo cellular respiration but not photosynthesis.
I'll give you Brainliest.
Answers
—Evidence—
-Plants carry our both the processes, thus generating food and energy. In fact, cellular respiration is carried out continuously throughout their life, while photosynthesis is only carried out during the hours when sunlight is available.
-Plants are autotrophs, which means they produce their own food. They use the process of photosynthesis to transform water, sunlight, and carbon dioxide into oxygen, and simple sugars that the plant uses as fuel.
- Plants have mitochondria and can perform cellular respiration.
An automobile tire at 23°C with an internal volume of 25.1 L is filled with air to a total pressure of 3.05 atm. Determine the number of moles of air in the tire.
Answers
WILL MARK BRAINLIEST WConsider two elements. Element A has a low ionization
energy of 500 kJ/mol and element B has a high ionization
energy of 1050 kJ/mol. Which element is most likely to form
a positive ion? [Select ]
In which block would you most likely find Element A?
Select)
In which block would you most likely find Element B?
[Select]
Answers
Answer:
the one with the lower ionization energy is more likely to be positive as it is easier to remove the valence electron that causes the positive charge
element a is likely in the s block as that is a low ionization energy and they get larger as you move up and to the R in the table
and element b is likely in the p block for the same reason
Explanation:
1. How many moles in 3.56 x 10^25 molecules of CH3F.
Answers
Answer:
Not sure
Explanation:
PLS HELP i will give 10 points
In Mendeleev’s Periodic Table, why was there no mention of Noble gases like Helium, Neon and Argon?
Answers
Answer:Answer choices are:
A. These elements did not fit in with his pattern.
B. These elements are gases and he didn't include gases.
C. The atoms of these elements had no atomic mass.
D. These elements had not yet been discovered.
___________________________________________________________
Correct answer choice is:
D. These elements had not yet been discovered.
PCI7 Compound name....
Answers
Explanation:
Phosphorus heptachloride
What is a mixture called when it has its different components mixed unevenly within the substance?
Heterogeneous mixture
Homogeneous mixture
Impure mixture
Pure mixture
Answers
Answer:
When 2 or more pure substances are mixed together they form a mixture. If the mixture has its different components mixed evenly within the substance it is a homogeneous mixture. Whereas if the mixture has its different components mixed unevenly within the substance it is a heterogeneous mixture
How many atoms of oxygen are in 1.5 moles in H2SO4?
Answers
Answer:
In the given formula, there is 1 carbon atom and there are 2 oxygen atoms. So, in total there are 3 atoms.
Explanation:
Which has the largest AT ?
A 80°C to 90°C
B) 45°C to 55°C
C 120°C to 130°C
D) 20°C to 30°C
E Its all the same
Answers
Answer:
E. They're the same
good luck, i hope this helps :)