In each of the following cases, give the number or the element symbol represented by X.

40 18 X
X 20 Ca
31 X P

Answers

Answer 1

Answer:

X20 Can it is answer for this question

Answer 2
1) Ar, argon
2) 40
3) 15

Related Questions

Why do large area's of water change how the wind blows?

A. Water changes temperature quickly
B. Water has no impact on weather
C. Water changes temperature slowly
PLS HELP!

Answers

Answer:

C

water changes temperature slowly i believe C is your anwser

Answer:

c

water changes temperature slowly

Question 1: A measure of the amount of matter in an object


Question 2: the force or speed with which something moves


1.momentum
2.collision
3.exert
4.mass
5.velocity

Answers

Answer:

question one is mass and question two is velocity

Draw a molecule and yeah that's basically it

Answers

Answer:
.......


Explanation:

Answer:

In the file! Hoped I helped!

After you set up a fish tank, you are sure to see algae growing in it. There is plenty of light, fertilizer in the form of fish droppings, and plants or glass for algae to cling to. You may see green strings of algae in the water or green spots growing on the glass. Your whole aquarium can turn green if you don’t stop the algae. To prevent the problem, you can add algae-eating fish or microorganisms to the water. Covering the aquarium for a few days will also kill algae, which need photosynthesis to survive.

Multi-celled algae grow into larger organisms through cell division. For one-celled algae, the purpose of cell division is

Answers

Answer: Reproduction.

What is the purpose of DNA?

Answers

Answer:

DNA contains the instructions needed for an organism to develop, survive and reproduce. To carry out these functions, DNA sequences must be converted into messages that can be used to produce proteins, which are the complex molecules that do most of the work in our bodies.

Explanation: Hope this helps. Branliest if you can plz.

Answer:

DNA contains the instructions needed for an organism to develop, survive and reproduce. To carry out these functions, DNA sequences must be converted into messages that can be used to produce proteins, which are the complex molecules that do most of the work in our bodies.

I hope it's helpful!

To find S, the number of shared

electrons, recall that

S = N-A

What is S for silicon

tetrachloride, SiCl4?

Answers

Answer:

I'm rly confused but Si stands for silicon in the compound if that's what ur asking

hope it helps tho

Brass is stronger than steel
True or False

Answers

False . Steel is stronger

Substance X is extremely acidic. Substance Y is extremely basic. What would be formed if substance X and Y were mixed together?


A basic substance

An atomic bomb

A salt and water(H20)

An acidic substance

Answers

The product is

A salt and water (H2O)

yeahh what they said^

How do you put this in your own words-

This amount depends on the latitude of the area. Latitude is the angular distance in degrees north and south from the equator. Different latitudes receive different amounts of solar energy.

Answers

I'm not the best at this but I hope this helps!

The value relies upon the latitude of the range. Different latitudes draw different amounts of energy from the sun because they are measured from North to the South of the equator.
This value can vary depending on the latitude of the area. The definition of latitude is the angular distance in degrees north and south from the equator. Different latitudes get different quantities of solar power.

Which factor is most important in determining climate?
longitude


latitude


hours of daylight


time zone

Answers

Answer:

B latitude

Explanation:

Latitude is the answer

The movement of tectonic plates in two locations is described below:

Location A: Tectonic plates push together
Location B: Tectonic plates slide past each other

Which statement is most likely true?

Earthquakes may occur in both locations.
Volcanic eruptions may occur in both locations.
Earthquakes may occur in location A but not in location B.
Volcanic eruptions may occur in location B but not in location A.

Answers

I’m gonna say A.

Explanation: When oceanic or continental plates slide past each other in opposite directions, or move in the same direction but at different speeds, a transform fault boundary is formed. No new crust is created or subducted, and no volcanoes form, but earthquakes occur along the fault.

How will you know if a chemical change has occurred when the reactants are combined? Use evidence and scientific reasoning to support your answer.

Answers

Answer:

I would know if a chemical change is occurred if a new material is formed which doesn't share any characteristics of the reactants example if we expose iron to water and air a new material is formed (rust) which doesn't share any characteristics of iron,water or air.

cells are made up mainly of proteins and carbohydrates how do these molecules function in the cell membrane
pls i need it!!

Answers

Specific proteins can help transport molecules into the cell, settled in some parts of a phospholipid bilayer, meanwhile carbohydrates participate in cell recognition and adhesion, choosing which molecules can transport into the cell.

Which statement refers to convection?


Sunlight travels through space without the aid of fluids or solids.


Land and ocean absorb and re-emit heat from the sun.


Some of this energy is reflected off Earth's atmosphere.


Warm air rises and takes heat with it; eventually it cools and sinks.

Answers

Warm air rises and takes heat with it; eventually cools and sinks

Answer:

Your answer is D

Explanation:

instruction
ACTIVO
Describing the Energy on a Slide
CE
A
Each sentence describes potential and kinetic energy
at various locations on a slide. Complete each
statement by selecting the position of the object on the
slide.
An object at position vhas all kinetic energy
An object at position has all potential energy
An object at position has about half potential energy
and half kinetic energy,
B
С
Intro
Done

Answers

Answer:

An object at position A. has all potential energy

An object at position B. has about half potential and half kinetic energy

An object at position C. has all kinetic energy

Explanation:

I already did it and got all of them correct. I hope this helped!! :)

what is matter and what are some thing that are living and nonliving

Answers

Answer:

Living beings and non-living things both follows the physical and chemical general principles, like the thermodynamic laws, and they are constituted both by atoms and molecules, the basis of the natural organization of all known matter on Earth.

Answer: Matter is anything that has mass or takes up space, something non living is a rock something living is a tree

Explanation:

(I'LL GIVE BRAINLIEST TO WHOEVER ANSWERS FIRST!)How do the properties of magnets allow them to be useful to society?

Answers

Yaaaaaaaaaaaaaaaaaaaaa

Please help me out with this question if you help me I will give you the brain thing and extra points. 2/9 image below.

Answers

Answer:

B

Explanation:

Due to the force of Inertia

the answer to this question would be B

Some hormones enter cells via

Answers

ANSWER: receptor-meditated endocytosis
I’m not sure if this is what you’re looking for but this is correct. Next time please add the full question and possible answers. HOPE this helps someone please leave thanks if so.

Brass is an alloy of copper and zinc. Bronze is an alloy of copper and tin. Alloys are commonly used in manufactured items because the properties of these metal mixtures are often superior to a pure metal.

Answers

Answer:

Correct, in structures of material you can calculate youngs modulus and the module of elastics and rigidity to calculate breaking points as well as structural integrity.I do quizzes and exams if your interested:)

Which of the gases below is found at high levels near the surface of the ocean due to plant photosynthesis?
A.
nitrogen
B.
neon
C.
oxygen
D.
carbon dioxide

Answers

It’s oxygen we learned about this

Please help me out with this question if you help me I will give you the brain thing and extra points. 8/9 image below.

Answers

Answer:

the answer is most likely b, sorry if im wrong.

Explanation:

.....

b is the most logical anwser.

1. What direction does water move if a cell is placed in salt water?

2. What direction does water move if a cell (slightly salty) is placed in pure distilled water?

3. What direction does water move if the concentration of salt is the same inside and outside of the cell?

4. What organelle of the cell controls movement in and out of the cell?​

Answers

Answer:

the water will move into the cell

Explanation:

the hypotonic solution has a higher water potential than that of the cell, so water will enter the cell from a region of higher water potential to a lower water potential down a water potential gradient across a partially permeable membrane via osmosis.

Answer:

left

Explanation:

a clear liquid is poured into a beaker containing another clear liquid. A cloudy yellow substance forms, as if out of nowhere, but the rest of the liquid remains clear. what happened?

Answers

Answer: A precipitate is formed as a result of a double displacement reaction.

PLS HELP MY TEACHER IS MAKING ME DO THIS TODAY IF U ANSWER CORRECTLY I WILL HIVE BRAINLY
Glyptodon is a giant, armadillo-like animal that once lived on Earth and weighed over 2000 kilograms (kg) and lived almost exclusively in warm, wet coastal regions. In many ways it resembled the 4 kg armadillo that lives today. From the information given, what is the probable reason Glyptodon is not alive today?

A. Predators hunted the animal for food to the point of extinction.
B.The animal could not adapt to environmental changes.
C.The animal ate too much food.
D. The Glyptodon had genetic variation.

Answers

Answer:

i think it's B,i'm not sure hihi

Answer:

B i took that thing

Explanation:

Another science question because i dont know it so i need more help

Answers

Answer: Would be C

Explanation: It would be c because all the others aren’t true and it’s easier to study so you know the awnser btw

I need help! :)
-"When a sedimentary rock changes shape under heat and pressure,but does not melt completely,it becomes which of the following?

A:Igneous
B:Magma
C:Metamorphic
D:Volcanic ​

Answers

Answer:

Metamorphic!

Explanation:

I hated this science test too, but this is the answer. Good luck!:)

Bicarbonate is a solution present in human blood. Bicarbonate helps to maintain our bodies pH and resists pH change. Bicarbonate is an example of a(n) ______________________.


Indicator

Buffer

Acid

Answers

Answer:

buffer

Explanation:

yeah what they said^

Two brothers are participating in a race. The older brother's average speed is 6 miles per hour and he finishes the race in 1 hour and 20 minutes. If the younger brother's average speed is 4 miles per hour, how long will it take him to complete the race?

A.) 45 min

B.) 2 Hours

C.) 4 Hours

D.) 30 min

Answers

B). 2 Hours
Explanation if the older brother can run 6 MPH and it’s takes him a hour and twenty minutes you automatically can say it’s at least 6 miles then you have to see how many he can run in 20 minutes which is roughly 2 miles so that would mean he run for 8 miles if the younger brother can run 4 MPH then you just have to add that by 2 too see how long it will take to run 8
The answer is 45 for this just plug in your variables to the equation

Which of the following options best explains how less chlorophyll would affect the process of photosynthesis in plants?

Group of answer choices

It would limit the amound of light absorbed by the plant and decrease the amount of food the plant is able to produce for itself.

It would increase the rate of photosynthesis becasue of the increased production of food.

It would limit the amount of water plants are able to take in, resulting in a slower rate of photosynthesis.

It would increase the production of oxygen becasue the plant would need to work hard to feed themselves.

Answers

Answer:

It would limit the amount of light absorbed by the plant and decrease the amount of food the plant is able to produce for itself.

Explanation:

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What is a formula that can be used to find the area of one triangular section of the door how do you know the formula will work? determine the area of mrs wests backyard that is coverd grass and show ur work!! Alleles are represented using upper and lowercase letters like B for brown eyes and b for blue eyes.A. TrueB. False Maksud Berketerampilan Definition: This was a territory in the western U.S. purchased from France for $15 million in 1803. Elena is designing a paint can with thickness ttt millimeters and height hhh centimeters. She calculates that the thickness of the can in milimeters must be at least 0.1, point, 1 times the height of the can in centimeters in order to withstand pressure. Due to cost constraints, the cost of material used, (0.2 + t+ 0.5h)cents, must be at most 12.2, point, 2 cents. Which system of inequalities best models the relationship between height and thickness? you are a teacher who has a seven-year-old child in your class who is having significant difficulty learning to read.which type of psychologist would you contact to assist you with this challenge whY? PLZ HELP I NEED IT VERY MUCH THANK YOU BRAINLIEST AND % STARS THANK YOIU please help!!!!!!!!!! Becky made 63 carnival masks, which is 30% less than the numberher brother made. How many carnival masks did Becky and herbrother make in total? Identify if the equation is growthor decay and the rate. I need this questions done for my class, we went over this but I forgot. Can you guys say the answer and explain so I dont forget again? Thank you so much! 1. In lines 1-14, mark vivid sensory details describing the time of year. Why does Chaucer focus on these sensory details? What impression of the season do these details create? cucl2(aq)+na2s(aq)cus(s)+2nacl(aq)Write the net ionic equation for this reaction. Describe three major problems faced by landlocked countries? Yuri thinks that 3/4 is a root of the following function. q(x)=6x^3+19x^2-15x-28Explain to Yuri why 3/4 cannot be a root. what are the next 3 terms in this:O,T,T,F,F He was standing___ the door and wanted____ a glass___ watch rewrite it using proper preposition Can you suggest possible activities and ways on how to ease thecomphcations and conditions a mother is going through before, during andafter pregnancy? Pippin went to a game room that charged $4 admission, plus $0.25 per token. The equation which represents his total cost is y = 0.25x + 4.What are the ordered pairs for the equation when you use these x-values: 5, 10, 20?(5, 5), (10, 8), (20, 15)(5, 8), (10, 10), (20, 15)(5, 5.25), (10, 6.50), (20, 9)(5, 5.50), (10, 8.50), (20, 13)