Answer:
B. Isopropyl alcohol will have a lower boiling point than water
because the forces between the molecules are smaller.
D. Isopropyl alcohol will have a flatter meniscus than water because
the forces between the molecules are smaller.
Explanation:
Isopropyl alcohol will have a lower boiling point than water because the forces between the molecules are smaller. Isopropyl alcohol will have a flatter meniscus than water because the forces between the molecules are smaller. Hence, options B and D are correct.
What is surface tension?Surface tension is the force that acts parallel along the surface of a liquid which in turn makes the surface of the liquid behaves like an elastic material.
Surface tension, as the name implies, acts on the surface of a liquid giving it some elastic properties; it is a product of the inherent properties of the molecules of the liquid.
For example, water possesses surface tension which is why when a pin or a needle is gently placed on the surface of the water it floats. Surface tension also accounts for the fact that some insects can walk on water.
Hence, options B and D are correct.
Learn more about surface tension here:
https://brainly.com/question/11348644
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please answer the question
this is a very hard question
How can a charged balloon attract a wall without any contact?
A) The positive charges of the uncharged wall move to the outside.
B) The wall changes shape and the positive charges move to the inside.
C) The negatively charged balloon repels and moves away from the wall.
D) A positive charge in the balloon attracts the negative charges in the wall.
Explain 1 difference between Prokaryotic and Eukaryotic cells. plz plz plz plz plz help me plzzzzzzzzzzzzz all my points this due today
Answer:
Prokaryotes are organisms made up of cells that lack a cell nucleus or any membrane-encased organelles. Eukaryotes are organisms made up of cells that possess a membrane-bound nucleus that holds genetic material as well as membrane-bound organelles.
Explanation:
Answer:
Prokaryotic cells do not have membrane bound organelles such as mitochondria, nucleus, etc. Eukaryotic cells consist of membrane bound organelles which are tiny compartments in the cell designed for a specific purpose such as the nucleus, mitochondria, etc.
Henry touched a hot plate and immediately moved his finger away from it.
Which best explains the integumentary system’s role in this reaction?
a. Oil in the skin sensed the temperature difference.
b. Nerve endings in the skin responded to the heat.
c. Some hairs stood up when the fingers touched the plate.
d.His nails absorbed heat and moved his finger away from the plate.
Answer:
b. Nerve endings in the skin responded to the heat.
Explanation:
hope this helps
Answer:
B. Nerve endings in the skin responded to the heat.
Explanation:
Nerve endings are what sense something, sends a message to the brain, the brain would read and respond.
Hope that helps and have a great day!
Which organisms are primary consumers in a temperate coniferous forest? (Select all that apply.)
yellow-bellied marmots
weasels
birds
mice
Answer:
birds
Explanation:
also yellow bellied marmots
Giving brainliest for first right answer
Answer:
b.
Explanation:
hheeeeeeeeeeeeellllllllllllllp
The diagram shows different forms of thermal energy transfer.
What do the flames below the pot represent?
a
conduction
b
convection
c
insulation
d
radiation
THX TO EVERBODY WHO HELPED ME PASS TODAY
Answer:
i didnt help but thanks for the points
and good job
Explanation:
the graph represents the decay curve of a radioactive isotope called strontium 90 what is the half life of this isotope
A. 8 years
B. 25
C. 50
D75
The half-life of strontium has been 25 years. Thus, option B is correct.
The half-life has been given as the amount of time required for an element to be reduced to half of its initial concentration. The half-life of the element has been given as:
[tex]A=\AA\;\dfrac{1}{2} ^\dfrac{t}{t1/2}[/tex]
Where, the initial concentration of sample, is given by [tex]\AA[/tex]
The final concentration of the sample is given by, A
The time of the reduction is given by t.
The half-life of the sample has been given by, t1/2
In the given graph, the initial concentration of the sample has been 100 grams. The time at which the concentration has been halved i.e. 50 grams is found after 25 years.
Thus, the half-life of strontium has been 25 years. Thus, option B is correct.
For more information about the half-life, refer to the link:
https://brainly.com/question/24710827
1a) Three groups of students investigate the reactions of magnesium with two different acids. They label their acids Acid A and Acid B. The concentration of both acids is the same. Their method and results are given below. Which groups results were not repeatable? *
1 point
Captionless Image
Group 1
Group 2
Group 3
Answer:
i dont see the image but from what i see on the question i think its group 2
Explanation:
A praying mantis eats a bee.
Tell which type of relationship it is: mutualism, predation, parasitism, competition, or commensalism. Give details on why.
Try for 2 sentences:
I think a praying mantis eating a bee is an example of....
I think this because...
Answer:
I think a praying mantis eating a bee is an example of predation. I think this because the praying mantis stealthily hunts its preys, like the bee, in order to kill eat for food.
Explanation:
"Predation" refers to the killing of another living organism in order to prolong the life of the "predator" (hunter) and to end the reproductive life of the "prey" (the one being consumed). The praying mantis is popularly known for being a deadly predator because it feeds on several insects (as its prey), including the bees. They are said to also feed on wasps, moths, mice, frogs, rodents and even snakes.
It kills the bees in order to consume them so it can prolong its reproductive life. It then stops the reproductive life of the bees. Clearly, the type of relationship here is "predation."
I think a praying mantis eating a bee is an example of predation.
I think this is because the praying mantis which is a predator consume the prey which is the bee most times in a defensive manner.
Predation is a biological relationship in which a predator kills or consume it's prey.
It's occur majorly in canivorous animals that consume flesh or other animals.
The predators consume the prey as food and as a form of defensive means from been attacked by the prey.
In this relationship, energy is transfered from the prey which is the bee to the praying mantis.
Therefore, the relationship that occur between praying mantis and bee is predation.
What’s the answer ?
True or false: An atom with 6 protons and 6 neutrons is an isotope. Answer correctly i will give brainliest
Answer:
True
Explanation:
Please tell me if it is wrong!
I would appreciate a brainliest because I need some to get to next rank.
Strawberry plants can reproduce both sexually and asexually. Strawberry farmers use both kinds of reproduction, depending on the desired outcome. In which of the following situations would a farmer most likely want the strawberry plants to reproduce sexually?
A when developing new varieties of fruit
B when making identical copies of a plant
C when producing fruit that is all the same size
D when growing many new plants from cuttings
Answer:
When developing new varieties of fruit
Explanation:
I TOOK THE ANSWER OFF QUIZIZZ FOR YOU <3
Which is not one of the benefits of biodiversity?
Economic value
Uniform genetics in a species
Survival of species in the ecosystem
Cultural value
In total honesty I'll say economic value
Answer: Uniform genetics in species
Explanation:5 of the benefits of biodiversity is economic value,ecological life support, cultural value , recreational value, scientific value
A and D are out and c is the same thing as ecological life support.
PLEASE HELP MEEEEEEEEEEEE
Answer:
i agree what is that hot mess'
Explanation:
Which of the following is an example of variation?
A)A wolf species that has different lengths of fur
B)A frog that has changed over time to hop faster
C)A lake that has become more clear with new environmental protection
A because B is evalution and C is change
Have a good day
Answer:C
Explanation:
Please help! Can someone give me answers for 2.08 Graded Assignment: Boiling and Melting Points Exploration for 8th grade science
Here are the questions
(I couldn't make the graph)
1. Looking at the line plots on your graph, describe how boiling point and melting point vary with respect to atomic number.
2. Now look at the segment of the graph between the two data points marked with black squares. Describe how the boiling point and melting point plots behave between these points. Be as specific as possible.
3. On your graph, the data points between the black squares are data for elements with atomic numbers 3 through 9. Locate these elements on your periodic table. What term or description would you use to identify these elements with respect to the periodic table?
4. Now look at the green lines you created by connecting the three boiling point data points and the three melting point data points. For each of these lines, describe any trends you see.
5. Locate the elements on your periodic table that you circled in green on your graph. What term or description would you use to identify these elements with respect to the periodic table?
6. After reviewing your answers to questions 2 and 4 above, would you define boiling point and melting point as a periodic table family trend (vertical groups), period trend (horizontal rows), or neither? Explain your answer.
7. Using the room temperature line (orange line) and your periodic table, make lists that identify the state of matter (gas, liquid, or solid) in which each element you plotted exists at room temperature. Explain your answers.
Answer:
Explanation:
Please help! Can someone give me answers for 2.08 Graded Assignment: Boiling and Melting Points Exploration for 8th grade science
Here are the questions
(I couldn't make the graph)
1. Looking at the line plots on your graph, describe how boiling point and melting point vary with respect to atomic number.
2. Now look at the segment of the graph between the two data points marked with black squares. Describe how the boiling point and melting point plots behave between these points. Be as specific as possible.
3. On your graph, the data points between the black squares are data for elements with atomic numbers 3 through 9. Locate these elements on your periodic table. What term or description would you use to identify these elements with respect to the periodic table?
4. Now look at the green lines you created by connecting the three boiling point data points and the three melting point data points. For each of these lines, describe any trends you see.
5. Locate the elements on your periodic table that you circled in green on your graph. What term or description would you use to identify these elements with respect to the periodic table?
6. After reviewing your answers to questions 2 and 4 above, would you define boiling point and melting point as a periodic table family trend (vertical groups), period trend (horizontal rows), or neither? Explain your answer.
7. Using the room temperature line (orange line) and your periodic table, make lists that identify the state of matter (gas, liquid, or solid) in which each element you plotted exists at room temperature. Explain your answers.
Repost:
What is weathering?
Match the definitions below with the correct component of the scientific method:
1.
Analyze your data and relate it back to your hypothesis.
2.
Define a problem to focus the goal of your experiment.
3.
Obtain information while conducting your experiment.
4.
Make a prediction about the outcome of your experiment
5.
Use your senses to gather information around you.
6.
Design an experiment and conduct trials to assess your hypothesis.
a.
Make observations
b.
Conduct testing
c.
Collect data
d.
Draw conclusions
e.
Ask questions
f.
Form a hypothesis
Answer:
F and 4
D and 1
E and 2
A and 3
C and 5
B and 6
Explanation:
Science Fair platform
Explain the symbiotic relationship of a coyote that eats a rabbit.
A coyote eating a rabbit is an example of....
I think this because..
Which organisms are producers in a temperate coniferous forest? (Select all that apply.)
grasses
evergreen trees
marmots
apple trees
Answer:
evergreen trees and grasses
Explanation:
Answer:
Evergreen Trees and Grasses.
Explanation:
This is the answer because Yellow-Bellied Marmots and Mice cannot eat Marmots, and Non-Carnivorous Birds are Omnivores but do not like to feed on Mammals nor Apple Trees.
I hope this helped!
What best describes the physical property of solubility?
A The ability of a substance to float.
B The ability of a substance to mix into or dissolve in a liquid.
C The inability of a substance to change states.
D The ability of a substance to separate easily.
Answer:
b
Explanation:because substance that mix or dissolve it explain better.
Answer:
B is what I would choose
Which organisms are secondary consumers in a temperate coniferous forest? (Select all that apply.)
moose
lynx
wolf
elk
Answer:
Lynx and wolf
Explanation:
The steps in an investigation between two negatively charged objects are listed below.
Step 1: Rub a cloth on two uncharged balloons to make them negatively charged.
Step 2: Bring the two negatively charged balloons together.
Step 3: Observe the repulsion between the two objects.
Which statement is true?
An object changes its charge when placed near another charged object.
Bringing two positively charged objects close together would result in attraction.
The two balloons do not have to touch for repulsion to be observed.
Two negatively charged objects will attract each other when they touch.
Answer:
The two balloons do not have to touch for repulsion to be observed.
Explanation:
They don’t have to touch for them to repel. Hope this helps! ;)
The two balloons do not have to touch for repulsion to be observed. Repulsion is a force between two or more similar or like charges.
What is repulsion ?Charges that are distinct from one another one positive and one negative will attract one another, but charges that are identical either both positive or both negative will repel one another.
Repulsion is a force between two or more similar or like charges, whereas attraction is a force between two or more different or unlike charges or poles. Two magnets that are in close proximity to one another either attract or repel one another.
A molecule's electronic state in a repulsive state according to quantum mechanics is one for which the potential energy is not at a minimum. Since the potential energy steadily declines with the interatomic distance and the atoms repel one another, this indicates that the state is unstable and unbound.
Thus, option C is correct.
To learn more about repulsion follow the link below;
https://brainly.com/question/19339318
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What type of relationship is pollination of flowers?
Tell which type of relationship it is: mutualism, predation, parasitism, competition, or commensalism. Give details on why.
I think that animals pollinating flowers is an example of....
I know this because.
Answer:
yogert flower
Explanation:
dont mind me im not a geat speller
What are some of the possible solutions for solving air pollution issues?
Answer:
Conserve energy - at home, at work, everywhere.
Look for the ENERGY STAR label when buying home or office equipment.
Carpool, use public transportation, bike, or walk whenever possible.
Follow gasoline refueling instructions for efficient vapor recovery, being careful not to spill fuel and always tightening your gas cap securely.
Consider purchasing portable gasoline containers labeled “spill-proof,” where available.
Keep car, boat, and other engines properly tuned.
Be sure your tires are properly inflated.
Use environmentally safe paints and cleaning products whenever possible.
Mulch or compost leaves and yard waste.
Consider using gas logs instead of wood.
Explanation:
Answer:
Make more earth-friendly ways to create energy using natrual resorces instead of fossil fuels releases greenhouse gases into the atmosphere and that causes the levles of Co2 and other gasses.
Example: Solar Energy, Wind Energy, Hydropower, etc.
Explanation:
help--? im so bad at science ugh
Answer:
a volcano is convergent
Explanation:
CONTACT FORCES
The force applied by a magnet on an iron nail.
The force applied by a student on a door to open it.
NON-CONTACT FORCES
The force applied by an electromagnet on a wire.
The force applied by the planets on each other.
Which statement best explains why the table is incorrect?
A. Magnetic force is a force acting at a distance
B. The student applies a non-contact force on the door
C. Electromagnets use contact force
D. Gravitational force acts between planets only when they are in contact.
Answer:
C. Electromagnets use contact force