Answer:
The number of neutrons is entirely dependent on the Mass number of the particular atom. The standard mass for potassium is 39.
Potassium is element number 19, so it has 19 protons and 19 electrons in the neutral atom. It has therefore 39-19 = 20 Neutrons.
Explanation:
Answer:
Number of Protons 19
Explanation:
Number of Neutrons 20
Number of Electrons 19
Melting Point 63.65° C
Which type of variable is kept the same throughout an experiment?
Constant variable
Measured variable
Outcome variable
Test variable
Answer:
Constant variable.
Which statement best describes a difference between scientists and engineers?
Scientists build prototypes, while engineers test failure points.
Scientist design machines, while engineers conduct experiments.
Scientists and engineers are the same. They both study how things work.
Scientists study how things work, while engineers create new things.
What is the relationship between parent cells and daughter cells.
Answer:
Explanation:In particular, eukaryotic cells divide using the processes of mitosis and meiosis. Mitosis is common to all eukaryotes; during this process, a parent cell splits into two genetically identical daughter cells, each of which contains the same number of chromosomes as the parent cell.
A parent cell is the cell that divides during cell division to produce two daughter cells. The two daughter cells produced during mitosis share the same genetic makeup as the parent cell. In meiosis, the daughter cells have half as many chromosomes as the parent cell and a distinct genetic makeup.
What is parent cell ?A parent cell that is a progenitor of other cells or the first in a line of growing cells, as well as a cell that divides to produce two or more daughter cells.
The cell that divides into two daughter cells during cell division is referred to as the mother or parent cell. The mother cell's genetic makeup is carried over into the two daughter cells created during mitosis.
An organism's reproductive cells are called gametes. They are additionally known as sex cells. Male gametes are referred to as sperm, whereas female gametes are referred to as ova or egg cells. Each haploid cell that makes up a gamete has one copy of each chromosome.
Thus, A parent cell is the cell that divides during cell division to produce two daughter cells.
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please help me answser this, its a photo
o element
o subscribe
o coefficient
Answer:
I believe it is a element
.........
Which of the following represents a type of change (physical or chemical) that is different from the rest?
Rusting of metal after being exposed to water
Hydrogen and oxygen combine to make steam
Water vapor condenses to form water droplets
Release of gas when a particular candy is dropped in water
Answer:
rusting of metal after being exposed to water
Explanation:
help me pls omg , im stuck
Answer:
b
Explanation:
Energy can be neither created nor destroyed. This fact means that even though energy sources can be depleted (used up), the energy in them is not destroyed. Instead, it is transformed to other forms of energy. And almost all energy resources here on Earth can have their energy traced back to the Sun’s gravitational or light energy.
Electricity is often thought of as a secondary source of energy because it must be gained by transforming some other kind of energy (a primary source). Think about where the electricity generated by a wind turbine comes from. Describe the path that wind energy takes from the Sun’s light to electricity.
plz help ioo points
hurry
Which one is right pls help
Answer:
The answer is Electron
Explanation:
Answer:
the answer is electron
What are three ways that synthetic materials benefit human society?
Answer:
The benefits in synthetics are many, they have properties that we can't find in nature, they allow us to make things stronger, lighter, more fuel-efficient, shiner, longer lasting. And at the same time, we do add to the pollution of our world, affect the health of animals and humans, and requires energy to make.
Explanation:
Synthetic materials, also known as man-made or artificial materials, have made significant contributions to human society. Like Improved Performance and Durability, Expanded Range of Applications, etc.
Here are three ways in which synthetic materials benefit us:
Synthetic materials often possess superior properties compared to natural materials, such as increased strength, durability, and resistance to wear and tear.
Expanded Range of Applications: Synthetic materials have opened up new possibilities by offering characteristics that may not be readily available in nature.
Resource Conservation and Environmental Benefits: Synthetic materials can help conserve natural resources by providing alternatives to scarce or unsustainable materials.
Thus, while synthetic materials have numerous benefits, it is essential to consider their environmental impact throughout their lifecycle, including disposal and potential hazards.
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Water is less dense as ice than liquid
Your answer:
true
false
Answer:
Solid water, or ice, is less dense than liquid water. Ice is less dense than water because the orientation of hydrogen bonds causes molecules to push farther apart, which lowers the density.
Explanation:
Answer:
false
Explanation:
Hope that helps!!
What are some advantages and disadvantages of sexual reproduction?
Answer:
Allows for diversity, but is slow and inefficient compared to asexual.
how are elements in the same group in the periodic table alike
Answer:
D. They have similar chemical properties
Explanation:
That's because they have the same number of electrons in the outer orbital
Scientists have been studying four populations in one area of the Atlantic Ocean. In this area, both tuna and dolphins eat squid, and squid eat herring (a type of fish).
The data shows that recently the tuna population increased. How will the increase in the tuna population affect the other populations? Be sure to explain whether the dolphin population, the squid population, and the herring population will change, and why.
Answer:
the squid population could decrease, because the tuna population is increasing and they would eat more squid, so the dolphin population would also decrease because there would be less squid to eat, and because there are less squid the herring population would increase.
In trophic webs, there is an equilibrium between species until a change occurs. The increase in tuna's population causes a decrease in dolphins' and squids' populations, and an increase in herring's one.
------------------------
To answer this question, let us first review some theoretical framework.
The trophic web is a relationship process between different organisms, through which occurs transference of energy.
The ones placed at lower levels pass energy to the ones at the higher levels.
Organisms at each level feed on the preceding one and become food for the next one.
The first link corresponds to a producer organism -autotroph-. The following links are the consumers -heterotrophs-: herbivores and carnivores. The last links are the decomposers that degrade organic matter from dead organisms.As it is a web, all organisms are equilibrated until a change occurs.
When the change affects any of the involved links, there can be a cascade effect on the web.
A change in a link population size (increasing or decreasing) will affect the superior links and the immediately anterior link.
Also, when two or more species are competing for the same source of food, a change in any of the population sizes will affect the other ones.
Now, let us analyze the exposed example.
We know that,
tuna and dolphins eat squid, squid eat herring.We need to figure out what is the cascade effect caused by the increase in the tuna population.
Tuna and DolphinsWe know that tuna and dolphins compete for food items -squids-.
An increase in the number of tuna individuals means a higher competition pressure for dolphins.
The more tuna there are, the more squids they eat, and the less food available there is for dolphins.
Since there are not enough squids for dolphins, their population decreases in size.
Dolphins are negatively affected by tuna's increase.
**** Tuna population increases ⇒ Dolphins population decreases ****
Tuna and Squids
Tuna applies a significant predation pressure on squids, which are their main source of food.
The more tuna there are, the more squids they eat.
Squids probably can not reach sexual maturity or do not get to successfully reproduce, because they are eaten by tuna.
So squids population is negatively affected by the tuna population increase.
**** Tuna population increases ⇒ Tuna population decreases. ****
Herring and SquidsSince squids feed on herring, any change in squids' population size affects herrings directly.
When the squids' population decreases in size, the herring population increases. More fishes get to survive and successfully reproduce.
The predation pressure of squids on herring decreases.
The herring population is positively affected by the squids' population decrease.
*** Squids population decreases ⇒ Herring population increases. ***
Summing up, the cascade effect is as follows,
Tuna population increasesDolphin population decreasesSquids population decreasesHerring population increases---------------------------
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Magnesium (Mg) has two electrons in its outermost energy level.
Oxygen (O) has six. How can a Mg atom bond with an O atom?
One atom of (blank) bonded to two atoms of (blank).
Answer:
One atom of Oxygen bonded to two atoms of Hydrogen. It's a water molecule. The element consists of two identical atoms which is a diatomic molecule.
Explanation:
Answer:
One atom of Oxygen bonded to two atoms of Hydrogen. It's a water molecule. The element consists of two identical atoms which is a diatomic molecule.
Explanation:
So im confused i don't know what im supposed to do here
So I believe you are supposed to take notes based on the guiding questions (the questions on the side).
Answer:
save your notes in a google drive folder then go back to canvas and click on the "google drive" tab then scroll down and once you see the name of the folder you saved your notes in, click on it then hit submit
Explanation:
Which one would charge faster?
Look at the table that shows values for Coast Guard search and rescue operations. Write an evaluation of the success of the Coast Guard’s efforts. Be sure to support your answer with evidence from the data table.
Answer:stats are higher than before
Explanation: its their evaluation because the stats are higher than beofre
A car is going on the 210 freeway going west at 80 mph. The car then slow down to 50 mph. As the car merges to the 605 freeway going south at 50 mph. How many changes in velocity was their?
Answer:
1
Explanation:
when he merged
when he slowed down he didn’t change direction which is a key part of velocity so that doesn’t count
strong acids and bases can be harmful to both plants and animals in our waterways. which of the following is not a consequence of acidity ?
Answer:
I think b is the correct answer
Explanation:
Answer:I think maybe C? I don’t know... I am in 6th grade and I don’t know what grade science this is...
Explanation:
PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ help me!!!!!
Classify the following substances as:
Pure Substance – P Solution – S Mechanical Mixture – MM
Suspension – SU Colloid - C
Substance
Apple Juice
2005 Penny
Propane
Chicken Noodle Soup
Milk
Salsa
14 Karat Gold Ring
Air
Pepsi (in a glass)
Chocolate Chip Cookie
Answer:
dude me too in which garde are you ☠
What causes the electrons to move and form static electricity?
moist air
dry air
friction
Answer:
friction
Explanation:
The rubbing of certain materials against one another can transfer negative charges, or electrons.
The friction generating between the surface of two objects causes the electrons to move from one body to the other and form static electricity. Hence, option c is correct.
What is static electricity ?Static electricity is the flow of electrons that occurs due to the temporary polarization of two bodies. When a conducting surface rub on other surface, they gets electrons by frictional force.
These free flow of electrons make them negatively charged. When this negatively charged body comes in contact with a non conducting surface they latter gets polarized by the electrons of negatively charged body.
The positive charges of the nonconducting surface gets attracted to the negative body and the electrons flow from the negatively charged body to the partially polarized positive body. This is called static electricity.
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Help me plzz can't fail this
due today
Answer:
I'm lazy so I won't explain
1. Groups are the vertical lines on the periodic table
2. Periods are the horizontal lines on the periodic table
3. *make sure to always capitalize the 1st letter, and lowercase the 2nd
*Always use print letters
a. Mg b. K c. Fe d. Cu e. Xe f. Pt
4. a. Carbon b. Lead c. Arsenic d. Osmium e. Krypton f. Strontium
5. a. 1 b. 4 c. 7 d. 14 e. 5 f. 5
6. a. 16 b. 2 c. 1 d. 12 e. 17 f. 8
Hope this helps u
Of the first 103 elements, how many have 2 letters in their symbols?
A batter hits two balls during practice. Ball A travels 10 meters, while ball B travels 12 meters. The batter decides to hit ball A with less force. How will this change the motion of ball B?
The motion of ball B will increase.
The motion of ball B will decrease.
The motion of ball B will stay the same.
The motion of ball B will become the same as ball A.
Answer:
C. the motion of ball b will stay the same
Please help ASAP I will give 19 points please help
Don’t answer if you don’t know it, if you answer that is really rude because I need the answer and only 1 more person would be able to answer not 2 people to not answer if you have no answer. I am making it clear again DO NOT ANSWER IF YOU DONT KNOW THE ANSWER
Answer:
Can you pls clarify this
Explanation:
I dont
Which of the following is NOT a characteristic that all living things share? *
using energy
made of cells
able to talk
reproduce
Other:
Answer:
C- "able to talk"
Explanation:
Not all living things cant talk, but they all use energy, are made of cells and can reproduce.
Materials with small, connected pores are _____.
A. Impermeable
B. Permeable
C. Unsaturated
D. Saturated
GOD BLESS AMERICA!!!!!!!!!!!
And God bless you! :)
Merry Christmas and happy new year and stay safe and have an awesome day and God bless! :)
Human activities can have more affect on the environment than you may think. When a dam is built, what are some of the impacts it will have on the surrounding environment?
Practice
Answer in at least 2 complete sentences.
Answer:
When a dam is built, the rest of the lake will begin to drought and remove moisture for the wildlife. Making the wildlife adapt, and in severe cases, become endangered.
Can someone please help me with this it's for a grade.
Answer:
The Answer is 'D'
Explanation:
The diagram on the down side shows the behavior of the particles of a liquid so I suppose it is the ocean. While the top diagram shows the behavior of the particles of a gas so I am sure it's the air. Therefore I chose the last diagram because it describes exactly how you wanted in the question, which is the Ocean's water evaporating to become gas or the 'air' as we say
Thank you and I hope you like this answer!