Answer:
81
Explanation:
Answer:
81
Explanation:
Brainliest?
After you completed your serial dilution of the copper chloride waste, you are curious how these different concentrations of copper chloride would affect an aluminum washer. How should you set up your experiment?
Answer:
with the 22 acid just look it up it will say that
Explanation:
Irrigation is a method used to water farm land. Identify two effects irrigation has on the water cycle and environment. A Irrigation can decrease the Earth's temperature, B. Irrigation can produce run-off that pollutes streams and rivers with fertilizers, C. Irrigation can cause erosion and take nutrients from the soil or D. Irrigation can increase global winds.
Please help and explain well because I really don't understand.
Answer:
A and C
Explanation:
Tell me step by step how to do 3/5 divided by 5.
Answer:
3/25
Explanation:
3/5 divided by 5.
Flip the reciprocal of 5.
3/5*1/5.
3/25.
Hope this helps plz mark brainliest :D
Answer:3/25
Explanation:divide
Guillermo was finding it difficult to walk up the steps to his family’s apartment. His doctor thinks that his cells might not be getting enough oxygen or glucose Why does having low levels of glucose or oxygen in his cells make it difficult for Guillermo to walk up steps? (Sentence starter: It is difficult for Guillermo to walk up steps because...
Answer:
Without enough oxygenated blood cells, his brain isn't getting enough oxygen, making it harder for his brain to process movement.
Explanation:
When you don't have enough oxygenated blood cells, you aren't getting enough oxygen to your brain, making it harder for you brain too process movement.
please help !! thank you <3
Which is not needed for a hurricane to form?
Answer:
strong cold front
Explanation:
Which of the following is true for compounds?
a) They can be created by chemical reactions.
b) They can be separated into their component elements through physical means.
c) They all have the same properties regardless of their elemental composition.
d) They can consist of no more than two types of elements.
Answer:
Answer: The correct option is that the compounds are created by chemical reactions.
Explanation:
Option 1: Elements combine chemically in a specific ratio to form compounds. They can't be separated by physical methods like filtration. For example, is made up 2 H-atoms and 1 O-atom. When we filter water through normal filtration, we do not obtain H-atom and O-atom separately, but we get combined form of hydrogen and oxygen atom that is .
Option 2: Compounds are formed when two or more elements combine chemically.
Option 3: Compounds can have more than two types of elements. For example, In , 3 elements are present - Calcium(Ca), Carbon(C), Oxygen(O).
Option 4: Compounds formed have different properties from one another. There can be difference in physical properties as well as chemical properties. For example, (water) and (calcium carbonate) are two compounds. Water is present in liquid state and calcium carbonate is present in solid state. Hence, it showed that all the compounds cannot have same properties
The chemical compound can be created by chemical reactions. Therefore, option (A) is correct.
What is a Chemical compound?A chemical compound can be defined as a combination of two or more either similar or dissimilar chemical elements. A chemical compound is composed of many identical molecules containing atoms from more than one element held together by chemical bonds.
A molecule containing atoms of one element is therefore not a compound. A compound can be converted into a different substance by a chemical reaction, which can involve interactions with other substances. The chemical bonds between atoms may be broken or form new bonds.
Molecular compounds have covalent bonds, ionic compounds have ionic bonds, Metallic compounds have metallic bonds and coordination complexes have coordinated covalent bonds.
Therefore, compounds can be created by chemical reactions. They have different properties regardless of their elemental composition.
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i need help with this pls answer this asap
Please help me I will give you the brain thing and extra points. image below part 9
Answer:
I think D but dont count on me
Answer:B
Explanation:Factors that influence the reaction rates of chemical reactions include the concentration of reactants, temperature, the physical state of reactants and their dispersion, the solvent, and the presence of a catalyst.
Susanna was hiking in the mountains, and she discovered an interesting, shiny rock. She wondered if this sample was actually a rock or if it might be a mineral. As she observed it more closely, she noted that it was solid and naturally occurring, with a definite chemical composition. The sample did not appear to have a crystal structure.
Could Susanna have found a mineral? Explain why or why not.
please help me out
Answer:
Yes it is a mineral
Explanation:
Susanna has found a mineral because the five characteristics of a mineral are naturally occurring solid, crystal structure, forms by inorganic process, and definite chemical composition. Everything that was listed in the question describes the fact that its a mineral.
Brainliest would be appreciated :)
Answer: yes it is
Explanation: yes it is
1. Annotate the calendar below to show approximately when the four seasons occur during the year.
Answer:
p o i n t s
Explanation:
Answer:
Spring runs from March 1 to May 31
Summer runs from June 1 to August 31
Fall (autumn) runs from September 1 to November 30
Winter runs from December 1 to February 28 (February 29 in a leap year).
Explanation:
According to the meteorological definition, the seasons begin on the first day of the months that include the equinoxes and solstices:
Spring runs from March 1 to May 31;
Summer runs from June 1 to August 31;
Fall (autumn) runs from September 1 to November 30; and
Winter runs from December 1 to February 28 (February 29 in a leap year).
Calculate the estimated density of each ball. Use the formula
D = m/V
where D is the density, m is the mass, and V is the volume. Record your calculations in Table A of your Student Guide.
Given that the density of water is 1.0 g/cm3, make a prediction about whether each ball will float in water. Record your prediction in Table A.
What is the estimated density of the table tennis ball? Record your answer to the nearest hundredth.
_______g/cm3
What is the estimated density of the golf ball? Record your answer to the nearest hundreth.
________ g/cm3
Answer: table tennis ball: 0.07
golf ball: 1.37
Explanation:
must contain 2 decimal points.
If energy is released or absorbed during a chemical reaction, where is the energy going?
Answer:
reactants give energy and products, when the energy is absorbed to break bonds the energy will be released
Explanation:
Answer:
Due to the absorption of energy when chemical bonds are broken, and the release of energy when chemical bonds are formed, chemical reactions almost always involve a change in energy between products and reactants.
Explanation:
Which statement describes the condition in which diamonds form?
A. They grow underground, in most regions of Earth
B. They form as water evaporates on the shore any body of water
C. They form deep underground, in certain areas that are under a great deal of pressure
D. They form as water evaporates on the shores of very salty bodies of water
A map. The map shows the physical features of the Fertile Crescent. The Fertile Crescent begins at the northern end of the Persian Gulf, continues north and west following the Euphrates River and Tigris River, and narrows down the western coast of the Syrian Desert ending in Upper Egypt. The empires of Mesopotamia, Akkad, Babylonia, and Sumer are within the Fertile Crescent. East of Sumer are the Zagros Mountains. Use the drop-down menus to identify the physical features on the map. The area south of the Fertile Crescent is the . The body of water that crosses the Fertile Crescent is the . One body of water that borders the Fertile Crescent is the . One physical feature located east of the Fertile Crescent is the .
Answer:
The Persian Gulf and the Tigris and Euphrates
Explanation:
Answer:
It’s syrian desert, euphrates river, persian gulf and zagros mountains
Explanation:
i got it right
3. Sketch a simple model that shows why the constellations change over the course of a year. Then, annotate the model to explain why you see different stars throughout the year.
Which of the fallowing would be a good that could be scientifically investigated
Which of the following is the best example of erosion?
a Sediment piling up at the mouth of a river
b Plant roots growing through concrete and splitting it
c Waves carrying sand away from a beach
d A large rock splitting into pieces because of ice
Answer:
Option C
Explanation:
Remember erosion is the process of moving sediments to one location to another. In this case waves moving sand away from the beach and to another location is erosion which means your answer is option C. It's not option B because plant roots breaking apart concert is a example of weathering, and the same goes for option D.
Hope this helps.
Determine the number of atoms in the following chemical formulas. Make sure you list the elements, how many atoms of each element, and how many total atoms. Numbers 1 and 6 have been completed as examples.
8NaCl = 8+8=16 (To find the total number of atoms add the total number of atoms)
Na=1x8=8 (remember to multiply the subscript by the coefficient)
Cl=1x8=8
H₂SO₄ = _______
H=
S=
O=
4KNO₃ = _______
K=
N=
O=
CaCl₂ = _______
Ca=
Cl=
3C₂H₆ = _______
C=
H=
What is your "Resting Heart Rate" for 1 minute? (it will be a number)
Answer:
The average human heart rate goes from 60 to 100 beats in a minute, so that'll be the main averagepoint.
Explain why electrical charges flow from one atom to another?
Answer: the electron from one atom will be attracted to the next atom in the direction of the positive charge the atom will jump out of its orbit in its atom into the orbit of the next atom
Explanation:
To solve this we must be knowing each and every concept related to electrical charges. Therefore, to make a neutral molecule, electrical charges flow from one atom to another.
What is electrical charges?Electrons, like protons, are bonded in an atom, although not all electrons. Electrons placed further out from the nucleus could be taken from the atom.
Whenever some electrons are taken from the atom, the amount of protons surpasses the amount of electrons leading to an electron deficit. The electrically neutral substance becomes positively charged once electrons are removed. In the opposite instance, the body can obtain electrons from an external source. In this instance, the body's electron count rises resulting in it becoming negatively charged.
Therefore, to make a neutral molecule, electrical charges flow from one atom to another.
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PLEAS DO ASAP!!!!!!
An angiosperm is a plant that has flowers and fruits with _________
in them.
Answer:
Seeds
Explanation:
Took the test
An angiosperm is a plant that has flowers and fruits with seed in them.
What is an angiosperm ?Angiosperms are plants that produce flowers and seeds in the form of fruits. With approximately 300,000 species, they are the kingdom Plantae's largest and most diverse group. Angiosperms account for roughly 80% of all known living green plants.
Vascular plants are angiosperms. They are made up of stems, roots, and leaves. Angiosperm seeds, unlike gymnosperm seeds such as conifers and cycads, are found in a flower. Angiosperm eggs are fertilized and grow into seeds in an ovary, which is usually found in a flower.
Another similarity is their ability to produce secondary growth. Angiosperms produce flowers and fruit with seeds within ovaries, whereas Gymnosperms produce seeds in cones.
Thus, An angiosperm is a plant that has flowers and fruits with seed in them.
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Why New York City and Los Angeles do not experience sunrise at the same time?
Answer:
December solstice sunrise comes at the same time for St. ... But St. Augustine has an hour more of daylight than New York. ... Look above at the simulated view of Earth as the sun is rising ...
Answer:
The different sunrise and sunset times are caused by the cities being at different locations within a time zone. This causes both cities to have a different time at which solar noon occurs, and so will shift sunrise and sunset times either forward or backwards
As to daylight hours, theoretically they should be the same at both locations. However, in real life, the amount of daylight hours at both locations is slightly different because of when (solar time) the solstice occurs.
Please help me I will give you the brain thing and extra points. part 4 please hurry about out of time.
C6H12O6 + O2 = CO2 + H2O
Hope this helps! Please correct me if Im wrong :)
help me out hear ples
In two to four sentences, explain how you ranked the plants from most desirable to least desirable. Be sure to cite evidence from the data to support your rankings.
Answer:My plant rankings could protect the dunes because my plant rankings show most desirable plants and least desirable plants. Many people could use my plant rankings for saving dunes because when you look at the ranking and if you are trying to save a dune you would use the most desirable plants out of the seven plants.
Explanation:
Plant rankings, that include the best and least desired plants, might help to protect the dunes.
What do you mean by Dunes?A dune is a sand mound that the wind has created, typically near a beach or in a desert.
When wind drives sand into a protected region behind an obstruction, dunes are created. Sand particles build up, creating dunes. There is a slip face and a windward side to every dun.
Since you would use the top-ranked plants from the list of seven if you were attempting to save a dune, many people may benefit from using my plant rankings.
Sand that is carried inland and dumped above the high tide mark forms coastal sand dunes.
This is then contained by seaside objects, allowing specialised dune-building grasses to develop and ascend through further layers of sand.
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help please thank u !!
5. How does skin keep germs from getting in your body? (1 point) Cells have many layers to protect us.
6. How do the students enter the lower layers of Arnold’s and Pheobe’s skin? (1 point)
7. Your body is made of living cells that _________ and ________________. (2 points)
8. In which organ do the students discover that Sea Weedies are actually orange in color? (1 point)
9. The ________________ is the organ that absorbs all the good things and nutrients from the food we wat, and transports it to the blood stream. (1 point)
10. The __________, also made of cells, move food into the ________________________. (1 point)
11. What are some of the different types of body cells that Ms. Frizzle lists (at least 3)? (3 points)
12. As Ms. Frizzle says, “We are what we ____!” What does she mean by this phrase? (2 points)
13. Roughly how long would it take for new skin cells to regenerate and grow from the bottom layers, then reach the surface of the skin? (1 point)
Answer:
5. By having many layers of skin cells, you skin acts as a protective barrier to prevent unnecessary items from entering your body. It is your body’s first line of defense!
6. Through a hair follicle
7. grow and divide
8. inside the stomach
9. small intenstine
Explanation:
Which of the following is the best example of chemical weathering?
a Limestone rocks dissolving in water
b Plant roots growing through concrete and cracking it
c Waves carrying sand away from a beach
d A large rock splitting into pieces because of ice
Answer:
A
Explanation:
The other answers are talking about weathering and erosion
Which of these events leaves small pieces of rocks in new places?
a Deposition
b Weathering
c Erosion
d Oxidation
Answer:
c.
Explanation: