Answer:
To mark the upper fixed point, the thermometer is placed in a hypsometer containing water as shown in the figure. The bulb of the thermometer should be outside the water. When the mercury level becomes stationary at a temperature of steam, the level is marked, which represents the upper fixed point of the thermometer.
Explanation:
NO LINKS
air contains about 78% nitrogen and 21% oxygen. Based on this information, one can conclude that air?
A.is a pure substance.
B. is a mixture of at least two gases.
C. consists of different states of matter.
D. consists of components that are chemically joined.
A rancher rode his horse around a piece of property for 6 hours to search for breaks in the fence, and then rode home. The diagram below shows the entire distance the rancher traveled.
Which of the diagrams is the correct model for the element beryllium?
Answer:
the second one is correct :)
Explanation:
beryllium has 4 protons, 5 neutrons, and 4 electrons
Which equation represents a fusion reaction?
Answer:
B
Explanation:
I took the test
The equation that represents a fusion reaction is ²₁H + ²₁H = ⁴₂He and the correct option D.
A fusion reaction is a type of nuclear reaction that involves the merging or combining of two or more atomic nuclei to form a heavier nucleus. This process releases a significant amount of energy.
In fusion reactions, the atomic nuclei overcome the electrostatic repulsion between positively charged protons and come close enough for the strong nuclear force to bind them together. This typically occurs at extremely high temperatures and pressures, such as those found in the core of stars or in experimental fusion reactors.
The most well-known fusion reaction is the fusion of hydrogen isotopes, deuterium and tritium, to form helium. This reaction is the primary process that powers the Sun and other stars, and it is also the focus of research efforts to achieve controlled nuclear fusion for practical energy production on Earth.
Thus, the ideal selection is option D.
Learn more about Fusion reaction, here:
https://brainly.com/question/28020465
#SPJ2
1. Explain the two processes that keep atmospheric oxygen and carbon dioxide at stable levels?
2. What do you think are two causes of the increase in carbon dioxide in the atmosphere?
Cellular Respiration and Photosynthesis. Photosynthesis is the process of when plants use sunlight to make foods from carbon dioxide and water, to later on make oxygen. Cellular respiration is the process through which cells convert sugars into energy.
We can drink water straight from the ocean without purifying it.
True
False
False. The water would be toxic without purifying it before drinking.
How many different elements are in this equation? NaCl + AgNO3 --> NaNO3 + AgCl
Answer:
5 elements
Explanation:
Na, Cl, Ag, N, O are all separate elements because the first letter of an element is always capital and the second one is lowercase
The different chemical elements present in this equation NaCl + AgNO₃ --> NaNO₃ + AgCl are Na, Cl, Ag, N, and O.
What are chemical elements?Chemical elements are pure substances that contain only atoms and have the same amount of protons in the nuclei.
There are a total of 118 elements are present in a periodic table.
The elements present in the given equation are:
Na- sodium, Cl-chlorine, Ag-silver, N-nitrogen, and O-oxygen.
Thus, the elements present in the equation are Na, Cl, Ag, N, and O.
Learn more about chemical elements:
https://brainly.com/question/24121804
The Koppen Classification System splits the world into 5 climate zones.
What was used to determine these 5 different zones?
There are 3 correct answers.
Vegetation
Temperature
Animal life
Precipitation
Water Quality
Answer:
animal life
temperature
vegetation
Explanation:
I believe this is right
What is coevolution? *
A. When two species evolve in response to each other
B. When 2 sub group of the same species evolve at the same time
C. When the environment and the animals within the environment evolve at the same time
Answer:C
Explanation:
Explain what happens to the amplitude of a wave when the energy to produce it is increased. in easy words
HELP ASAP PLZ I WILL MAKE YOU BRAINLIST IF YOU ANSWER RIGHT
Answer:
The amplitude of a wave is related to the amount of energy it carries.
Explanation:
please help answer both and ill give brainiest.
Answer the air mass in question 1 would be humid and hot shan owing that it is on the ocean
and the air mass in region 2 would be cold because of the mountains restricting the airflow causing it to be cold.
What is the SI unit for weight? NO LINKS I will give brainliest
(and no its not kg)
Answer:
I think it is Newtons.
Directions: I have attached a copy of some fun facts about each planet. This week we have been discussing facts about each planet as well through bell ringers. Please research and present during class time (MONDAY & WEDNESDAY) and ZOOM (TUESDAY & THURSDAY). You are to write a poem or song about the planets and the information you submit have to be true about each planet. HYBRID students will present and submit a copy on WEDNESDAY, VIRTUAL students will present and submit a copy via CANVAS. HAPPY WRITING!!!!!!
Answer:
Im going try and create a song, I am writing this so my notifications remind me of this.
Explanation:
Answer:
Mercury is hot, but not too hot for ice,
Venus doesn't have any moons, and we aren't sure why,
Mars had a thicker atmosphere in the past,
Explanation:
help pls nelp due tonight
please help! its science im stuck between two answers
BRAINLIEST IF RIGHT (links will be reported)
What do waves transfer from place to place?
Energy and matter
Energy, but not matter
Matter, but not energy
Neither energy nor matter
When you touch the screen of a smartphone, these receptors are sending messages to the brain.
pain receptors
thermoreceptors
proprioreceptors
mechanoreceptors
EXPLAIN
Answer:
Mechanoreceptors
Explanation:
If Propriorceptors are for sensing light, thermoreceptors are for decenting temperatures, and pain receptors are for detecting injury, then mechanoreceptors would be used for sensing touch, and in this case you are touching the iphone screen, so mechanoreceptors is the correct answer.
BRANILEST IF RIGHT
WAVE A OR B
What parts of the cell do an amoeba and a plant cell have in common?
Answer:
the nucleus and vacuole
Explanation:
plant and amoeba have a membrane-bound nucleus
Even more Punnett Squares.
Answer:
horns (25%) dominant (50%)
Explanation:
BRAINLIEST IF CORRECT (PLEASE HURRY)
As the mass of an object increases, what happens to the gravitational force created by that object?
Answer:
the gravitational force is proportional to the mass of both interacting objects, bigger objects will attract each other with a greater gravitational force. So the mass of either object increases, the force of gravitational attraction between them also increases.
Answer:
Since the gravitational force is directly proportional to the mass of both interacting objects, more massive objects will attract each other with a greater gravitational force.So the gravitational attraction between them also increases.
Explanation:
Based on the article, how would you define a heat sink?
here is the article
https://www.sciencenewsforstudents.org/article/buildings-may-be-chasing-las-fog-away
Which of these is an example of sexual reproduction, involving meiosis?
help pls due tonight
Leaf cuttings taken from one plant grow into new plants.
. Pollen from one flower fertilizes the egg cells of another flower.
A fungus produces genetically identical spores.
A bacterium splits in half, forming two new bacteria.
Answer:
A bacterium splits in half, forming two new bacteria
Explanation:
Meiosis is a process where a single cell divides twice to produce four cells containing half the original amount of genetic information
2P4O10 + 2H2O → 2H3PO4
Answer:
[tex] \huge\red{ \mid{ \underline{ \overline{ \tt ♡ FORMULA: ♡ }} \mid}}[/tex]
2P4O10 + 2H2O → 2H3PO4
Balanced Equation → P4O10 + 6H2O → 4H3PO4
Tetraphosphorus Decaoxide + Water → Phosphoric Acid
[tex]{\huge\pink{\fbox{{࿐REACTION࿐}}}}[/tex]
Reaction Type → Synthesis
PLZ HELP 30 PIONTSSSSS
The Great Lakes region has both biotic and abiotic components.
Abiotic components include water, temperature, rainfall, and geological features. Biotic components include all of the animal and plant species in the area.
The ecosystem of the Great Lakes includes _______.
a
all of the biotic and abiotic components of the Great Lakes region
b
only the plant and animal species that live in the Great Lakes region
c
only the abiotic components of the Great Lakes region
d
only the animal species that live in the Great Lakes region
Answer:
its a
Explanation:
The Great Lakes region has both biotic and abiotic components. Abiotic components include water, temperature, rainfall, and geological features. Biotic components include all of the animal and plant species in the area.
Answer:
a
Explanation:
an ecosystem consists of the living and nonliving factors in the area
Can someone please help me. T-T
More Punnett Squares.
Answer:
A. 2 genotypes
B. Bb ,bb.
PLZ HELP! WILL GIVE BRAINLIEST, 5 STARS, AND A THANKS!!
~Read the article excerpt then respond to the question below.~
"Scientists make synthetic substances by arranging atoms and molecules in the lab. They use what they know about different types of atoms and molecules to arrange them and make the kinds of substances they want.
Synthetic medicines aren’t any different at the atomic level from the natural medicines found in the rainforest. After all, molecules are just molecules—whether they’re made in nature or in a lab, the same types of atoms arranged in the same ways always form the same molecules that behave in the same ways."
At the atomic level, are synthetic medicines different from natural medicines?
Explain your thinking.
Although herbal medicines are less potent in comparison to synthetic drugs in some cases but still these are consider less toxic or having less side effect in contrast to synthetic drugs. The ultimate norm for any medicine (human made or natural) is their non-toxicity, effectiveness, specificity, stability and potency.
URGENT PLZ HELP Just give me two of each please. It can even be one if you can think of anymore. I’ll give brainlist. :)
Answer:
Extended Structure: Sodium chloride or diamonds.
The Same: Protons
Repeating: Atoms or series of atoms
Answer:
Extended Structure: Sodium, chloride, diamonds.
Same: Protons
Repeating: Atoms or series of atoms
Explanation: