Below are atomic-scale models of two different substances. Use the terms in the word bank to label these models. Use each of the terms only once.
Answers
Answer:
See below
Explanation:
1) Top left box
Atom (As it points to only Cl atom)2) Top right box
molecules (more than one atom)3) Bottom left box
repeating atom group (as there are many KCl groups)4) Bottom right box
extended structure (remaining option)1st box is atom
2nd box is molecule
3rd box repeating atoms
4th group extended structure of CH_4
KCL is moleculeCH_4 is moleculeCl is atomRelated Questions
Which two substances are among the four major types of organic compounds made by living things?
A. Phosphates
B. Nitrates
C. Proteins
D. Lipids
Answers
Answer:
Lipids
Explanation:
D:)
Answer:
Lipids and Proteins
Explanation:
Hope this helps <3
Which vein carries oxygenated blood back into the heart?
Answers
Answer:
The veins that carry oxygenated bloof back into the heart are the pulmonary arteries.
Explanation:
Oxygen-rich blood flows from the lungs back into the left atrium (LA), or the left upper chamber of the heart, through four pulmonary veins. Oxygen-rich blood then flows through the mitral valve (MV) into the left ventricle (LV), or the left lower chamber.
Answer:
The veins that carry oxygenated bloof back into the heart are the pulmonary arteries.
Explanation:
DO mutations only form from natural factors?
Answers
Answer:
Mutations occur throughout the natural world.
Explanation:
-A-Astro
What is displacement?
Select one:
The direction an object moved.
The time it takes for an object to move a certain distance.
The distance an object moved.
An object’s change in overall position.
Answers
Answer:
The change in overall position
Explanation:
a major use of magnesium oxide is as a refractory material.
explain in terms of structure and bonding, why magnesium oxide has a very high melting point.
[ this is 4 marks, please provide a good answer ]
[ giving brainliest + thanks on profile ]
Answers
Sodium oxide has a high melting point because of the strength ofits bonds. Due to having strong bonds, they cannot be broken veryeasily. Magnesium chloride is ionic compound. There is a strong electrostatic force of attraction between 2 chloride atoms and 1 magnesium atom.
Because it retains its strength at very high temperatures. It is considered a refractory material with a melting point of 6500 degrees F. It is also very non-reactive with other materials that might be put into the furnace and is even used to make crucibles - containers used to melt other substances.
The strength of ionic bonds usually depends on two factors - ionic radius and charge. Mg+2
and O−2 have charges of +2 and -2 respectively. This is larger than the charges of other ions like Na+ or NO-3. Magnesium ions and oxygen ions also have small ionic radius. Magnesium is in period 3 so its ion is smaller than that of calcium or barium. Oxygen ion is smaller than sulfide and fluoride. The smaller the ionic radii, the smaller the bond length and the stronger the bond. Therefore the ionic bond between magnesium and oxygen is very strong.
A person riding a bicycle wants to move the bicycle forward. She moves her legs up and down on the bicycle's pedals. Then the rider wants to stop the bicycle. She stops pedaling and the bicycle slows. She takes one of her feet off a pedal and puts her foot on the ground to stop the bicycle and stay upright.
Which of these best identifies a pathway of systems in the rider's body, as described in this scenario?
A person riding a bicycle wants to move the bicycle forward. She moves her legs up and down on the bicycle's pedals. Then the rider wants to stop the bicycle. She stops pedaling and the bicycle slows. She takes one of her feet off a pedal and puts her foot on the ground to stop the bicycle and stay upright.
Which of these best identifies a pathway of systems in the rider's body, as described in this scenario?
nervous system > musculoskeletal system > circulatory system > nervous system
musculoskeletal system > nervous system > circulatory system > musculoskeletal system
musculoskeletal system > circulatory system > musculoskeletal system > nervous system
nervous system > musculoskeletal system > nervous system > musculoskeletal system
Answers
Answer:
nervous system>musculoskletal system>circulatory system>nervous system
Explanation:
What is the working resistance of a bulb that takes a current of 0.25 A when it is connected to 220V mains supply?
Answers
Answer:
880 Ω (Ohms)
Explanation:
To calculate Resistance from Potential Difference (Volts) and Current (Amps), you use the equation R = V/I
So,
R = 220/0.25
R= 880
Which two substances are among the four major types of organic compounds made by living things?
A. Phosphates
B. Nitrates
C. Proteins
D. Lipids
Answers
Answer:
D:)
Explanation:
Lipids
In the Tough Man Competition, very strong men are challenged to push or pull extremely large and heavy objects to test their strength. In one such challenge, they were asked to push one of two rail cars, an engine car and a box car. The data tables show one man’s results. Look over the data table and answer the questions below.
A. Why couldn't the strong man move the box car with a force of 3000 Newtons? Make sure to include Newton's 2nd Law in your explanation.
B. What could be done to move the boxcar?
C. Another student claims that during the competition, the sum of the forces on the boxcar was 0 N. What evidence is the student using to make this claim? Be sure to explain your thinking.
Answers
what type of electromagnetic energy does a water fountain use.
Answers
Answer:
Ultraviolet radiation is the electromagnetic wave used in sterilizing water in drinking fountains.
Explanation:
Ultra Violet (UV) light disinfection is one water treatment system that can be used to remove most forms of microbiological contamination from wate
Why will a sound wave travel through a solid more quickly than through a gas?
Group of answer choices
The particles in a gas are close together, which means the vibrations of the sound wave transmit more slowly.
The particles in a gas are spaced farther apart, which means the vibrations of the sound wave transmit more quickly.
The particles in a solid are spaced farther apart, which means the vibrations of the sound wave transmit more quickly.
The particles in a solid are closer together, which means the vibrations of the sound wave transmit more quickly.
Answers
Answer:
the particles in a solid are closer together, which means the vibration of the sound wave transmit more quickly.
can someone help me w this? A pneumonic device is a memorization tool that helps you remember things. For example, if you can read music you probably have heard, “Every Good Boy Does Fine” to learn the names of the lines on the treble clef EGBDF. Or maybe your math teacher taught you, “Please Excuse My Dear Aunt Sally,” to help you remember the order of operations. It is now your turn to think of a pneumonic device to remember the water cycle in order. Write your pneumonic device below.
Answers
Water cycle stages: Evaporation, Transpiration, Condensation, Precipitation
Edward took Charlie's pencil
What do you think happens to the oxygenated blood after it enters the left ventricle?
Answers
Explanation:
The oxygenated blood is brought back to the heart by the pulmonary veins which enter the left atrium. From the left atrium blood flows into the left ventricle.
the best and correct ans
To calculate acceleration you must
Select one:
multiply the force and mass
add the force and mass
divide the mass by the force
divide the force by the mass
Answers
F=ma; when you rearrange, divide m to the other side. you end up with a=F/m
can someone help me w this? A pneumonic device is a memorization tool that helps you remember things. For example, if you can read music you probably have heard, “Every Good Boy Does Fine” to learn the names of the lines on the treble clef EGBDF. Or maybe your math teacher taught you, “Please Excuse My Dear Aunt Sally,” to help you remember the order of operations. It is now your turn to think of a pneumonic device to remember the water cycle in order. Write your pneumonic device below.
Answers
Charlie took Edward's pencil
Carson tames emperor penguins
Is the Artic considered a desert? why or why not?
Answers
Answer:
Both, much of the artic is a desert including the artic basin, Canadian Artic Archipelgo, and the north pole because the average precipitation is between 150-250mm. This is below 250mm which is the agreed level to be considered a desert.
Below are atomic-scale models of two different substances. Use the terms in the word bank to label these models. Use each of the terms only once.
Answers
Top box :-
Denoted to one ClHence it should be atom
#Top right box
Denoted to KCl and CH_4 moleculesHence answer should be molecules
#Bottom left:-
Denoted to Whole branching of KCl h.ce it's repeating atom group
#Last
CH_4 's extended structure is shown hence it's extended structure
Part A A compass contains a magnet. The magnet responds to Earth's magnetic field. The magnet's north pole points north from most locations on Earth. Based on what you learned about magnetic force, make three predictions, Predict the approximate size of Earth's magnetic field and the approximate location of its North and South Poles. Give a reason for each prediction
Answers
Answer:
The Earth's magnetic field intensity is roughly between 25,000 - 65,000 north magnetic pole is 86.50°N and 164.04°E and the south magnetic pole is 64.07°S and 135.88°E
How can speed be described?
Select one:
The mass multiplied by the acceleration of an object.
The force on an object divided by the mass of an object.
The distance an object travels at a certain velocity.
The distance travelled by an object in a certain time.
Answers
The correct answer is: [D]:
___________
→ " The distance traveled by an object in a certain time."
___________
Explanation:
Choice: [A]: "the mass multiplied by the acceleration of an object."
refers to: "force". " F = m*a " . → Rule out: Choice: [A].
___________
Choice: [B]: "the force on an object divided by the mass of an object."
refers to: "acceleration". " F /m = a ". → Rule out: Choice: [B].
___________
Choice: [C]: "the distance an object travels at a certain velocity."
refers to: " the time period traveled at a specific speed AND direction."
___________
Choice: [D]: " the distance traveled by an object in a certain time"."
refers to: "speed". → which is our answer!
___________
Note: " speed = distance / time "; That is: " s = d/t " ;
Note that for "speed" ; the "direction of travel is irrelevant."
→ So; we can rule out: "Choice: [C]."
___________
The correct answer is: Answer choice: [D]:
→ " the distance traveled by an object in a certain time."
___________
Hope this is helpful to you in some way! Best wishes!
___________
How can speed be described?
Select one:
The mass multiplied by the acceleration of an object.
The force on an object divided by the mass of an object.
The distance an object travels at a certain velocity.
The distance travelled by an object in a certain time.
Answers
Answer:
The mass multiplied by the acceleration of an object.
Explanation:
Please give brainliest, It's not much, but it's honest work.
What type of electromagnetic energy does a light use?
Answers
Answer:
electromagnetic radiation
Explanation:
electromagnetic radiation: Energy that travels as a wave, including forms of light. Electromagnetic radiation is typically classified by its wavelength. The spectrum of electromagnetic radiation ranges from radio waves to gamma rays. It also includes microwaves and visible light.
THIS IS SCIENCE If you answer this please make two sides or list which go on each one whether it is Terrestrial or Jovian. I will give brainliest!
Compare terrestrial and Jovian planets below by writing each characteristic in the correct
category.
• less massive
• more massive
• many moons
• smaller volume
• zero to two moons
• farther from the Sun
• some contain ring systems
• larger volume
• closer to the Sun
• composed mostly of gases
• longer revolutionary period
• shorter revolutionary period
• composed of silicate rocks and metals
• geologic features like craters and mountains
Answers
Answer:
geologic features like craters and mountains
Explanation:
when i did this my teacher said it was ok
Into which chambers does blood enter the heart and through which chambers does blood leave the heart?
Answers
Answer:
Blood enters the right atrium and passes through the right ventricle.
Explanation:
The two bottom chambers are the right ventricle and the left ventricle. These pump blood out of the heart.
HELP NEED THIS DONE BEFORE 9:45!!!!!!!!!!!!!!!! WILL GIVE 100 POINTS AND BRAILIEST IF DONE BEFORE 9:45!!!!!!!!!!!!!
Answers
Answer:
1.) 742.57 m/s
2.) 132
3.) 4.375 hours
4.) 1080
5.) 81.6 km per hour
6.) 20 min = 1,200 secs1000 / 1200
Explanation:
Your Welcome!
Answer:
1.) 742.57 m/s
2.) 132 m
3.) 4.375 hours
4.) 1080 m
5.) 81.6 km per hour
6.) 20 min = 1,200 secs1000 / 1200
Explanation:
**Brainliest would be appreciated**
In an ionic bond, electrons are ___________________. Choose all the apply.
(12pts + Brainlest)
1. gained
2. lost
3. shared
4. neutral
Answers
Answer:
Electrons are shared.
Explanation:
In an ionic bond, electrons are gained and lost. So, the correct options are A and B.
What is an ionic bond?An atom can establish bonds with other atoms in two main ways: covalent and ionic. The sharing of electrons between two or more atoms forms a covalent connection. When two or more ions join contact, they can create ionic bonds that are held together by charge differences.
A chemical link in which one atom transfers one or more electrons to another atom is known as an ionic bond. A negatively charged ion, or anion, is created when an atom receives electrons, while a positively charged ion, or cation, is created when an atom loses electrons. The ions' opposing charges draw to one another and create a solid link between them. Usually, a metal and a non-metal atom form ionic connections. Ionic bonds contain electrons.
So, the correct options are A and B.
Learn more about Ionic bonds, here:
https://brainly.com/question/11527546
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PLEASE HELP
Sort the chemical reactions based on whether they absorb or release energy.
Answers
Answer:
Releases Energy:
1) Respiration in cells
3) Activating a cold pack
3) Burning a candle
Absorbs energy:
4) Baking bread
5) Photosynthesis
6) Producing electric current
Match the term with its description.
Acid:
Base:
Ions:
pH:
Definition:
A value from 0 to 14 is used to specify how acidic or basic a compound is when it is dissolved in water
Used to measure the pH of substances by determining their hydrogen ion concentration
A compound that increases hydroxide ions (OH−) when it is dissolved in a solution
A compound that increases hydrogen ions (H+) when it is dissolved in a solution
Answers
A value from 0 to 14 is used to specify how acidic or basic a compound is when it is dissolved in water= pH
A compound that increases hydroxide ions (OH−) when it is dissolved in a solution= Acid
A compound that increases hydrogen ions (H+) when it is dissolved in a solution= ions
Used to measure the pH of substances by determining their hydrogen ion concentration= base
Answer: pH goes with A value from 0 to 14 is used to specify how acidic or basic a compound is when it is dissolved in water
base goes with A compound that increases hydroxide ions (OH−) when it is dissolved in a solution
ions goes with Used to measure the pH of substances by determining their hydrogen ion concentration
acid goes with A compound that increases hydrogen ions (H+) when it is dissolved in a solution
Explanation: i took the test and got it right
Which of these shows the common stages of growth for a flowering plant?
leaves, seed, shoot, root system, stem or trunk, flowers
stem or trunk, root system, seed, shoot, leaves, flowers
seed, shoot, root system, stem or trunk, leaves, flowers
flower, seed, shoot, stem or trunk, root system, leaves
Answers
Answer:
everything because every part are equally responsible for the growth of plant
water evaporates and becomes a gas when from the sun
Answers
Answer:
water vapour
Explanation:
water vapour condents to water/rain
When excess _____ flow into an aquatic ecosystem, a chain of events may take place which leads to a low dissolved-oxygen level in the water. This is called eutrophication.
Group of answer choices
nutrients
gas particles
water and sand
solid substances
Answers
Answer:
solid substances
Explanation: