Answers
Answer:
Potassium is an element, with the symbol K
Explanation:
An element is something that cannot be broken down any further, for example, calcium, its Ca.
A compound is when you bond two or more elements. Compounds can be broken down into its original elements, for example, H₂O, it contains two atoms of hydrogen and one atom of oxygen (both hydrogen and oxygen are elements).
Related Questions
Whats the correct answer ?
Answers
Can someone please help me with this, ill give you a heart, a five star rating, and the brainliest answer!
Answers
Answer:
A not
B yes
C yes
D yes
Explanation:
A 2C 6H but 10O and 7O so no
B 3C 6O 2Fe on each side so yes
C 4H 1S 6O 2Na so yes
D 2Ag 2Cl 1Ca 2N 6O so yes
Which statement is correct about the water cycle?
1)Precipitation is when water flows into the ground
2)Condensation is when liquid water becomes a vapor
3)The water that exists on planet Earth now is the same water that existed during the age of the dinosaurs
4)Transpiration is water running of the surface of the ground
Answers
Answer:
precipitation is when water flows into the ground
Explanation:
.................
Hello can someone pls help me with this question! (Please explain why)
QUESTION: How is an increase in surface area achieved?
A. increasing the size of the reactant particles
B. decreasing the size of the reactant particles
Answers
Answer:
letter A.
Explanation:
the rate of a chemical reaction can be raised by increasing the surface area of a solid reactant. this is done by cutting the substance into small pieces, or by grinding it into a powder.if the surface area of a reactant is inceased: more particles are exposed to the other reactant.
HOPE IT HELPS(◍•ᴗ•◍)❤
How do scientists think?
Answers
Answer:
hmmm
Explanation:
about cguro sa planethope nka tulong
How many moles in 58 grams of CO3 ?
Answers
Answer:
60.0089
Explanation:
Ammonium chloride, ammonium sulfate and ammonium nitrate are used in fertilisers.
Ammonia reacts with nitric acid to make ammonium nitrate.
NH3 + HNO3 → NH4NO3
Calculate the mass of ammonia required to make 5.0 g of ammonium nitrate.
relative formula mass of NH3 = 17
relative formula mass of NH4NO3 = 80
Answers
Answer:
1.0625 g
Explanation:
Number of moles in 5g of NH4NO3 = 5.0g/80g/mol = 0.0625 moles
Again the balanced reaction equation is;
NH3 + HNO3 → NH4NO3
So,
1 mole of NH3 yields 1 mole of NH4NO3
x moles of NH3 yields 0.0625 moles of NH4NO3
x = 0.0625 moles of NH3
Mass of NH3 = number of moles * molar mass
Mass of NH3 = 0.0625 moles * 17g/mol
Mass of NH3 = 1.0625 g
1. What organisms keeps the ecosystem going but you can't see them with the naked eye?
Answers
Answer:
The answer is bacteria (microorganisms)
Explanation:
Bacteria can't be seen with the naked eye but it's part of a species that make up the biodiversity.
I NEED HELP! :(
john runs 300 meters north towards school.He forgets his backpack and walks back 300 meters. He then walks 230 meters north and sees his buddy joh. He walks 250 meters east to say hi. He then walks to school which is another 200 meters north and 250 meters west. He does this in 60 seconds
Answers
Answer:
This is the answer if u are trying to figure out how far he walked
1530 meters
Explanation:
300+300+230+250+200+250=1530meter
Differentiate between molecule and mole.
Answers
Answer:
Explanation:
A molecule, for example of water, contains 2 hydrogen atoms and 1 oxygen atom chemically bonded together and is the smallest building block of the chemical water. ... A mole is a certain quantity of molecules, specifically 6.02 x 10^23.
Hope this helps!
Please help!! I'll name you brainliest!!
Answers
Answer:
Chlorine
Explanation:
Potassium needs to lose one electron Chlorine needs to gain 1 electron
Answer:
S (Sulfur)
Explanation:
hope this helps!
Why is wood harder to use as fuel than oil? It takes longer to grow wood that can produce large amount of energy. There is only limited number of energy available in wood. Energy from wood cannot be converted to usable energy. Energy from wood is harder to convert than oil.
Answers
Answer:
it takes longer to grow wood.
Explanation:
The lower the pH level, the more acidic the solution
True or False?
Answers
Answer:True
Explanation:
True or False: Photosynthesis can happen anytime, regardless of the amount of reactants present or the presence of sunlight.
Answers
Answer:
This is false
Explanation:
Im in bio and we just learned this lol
DONT HAVE MUCH TIME 4 MIN
21. The number of protons in an element is called the _______________ number.
22. Irene Curie used ___________________ as the source of alpha particles for her research.
23. Uranium goes through _____________ decay ____________ (a number) times to produce
Plutonium.
24. ________________ is a raw Uranium ore which was central to the discovery of radioactivity.
25. The ____________________ was cited in the letter signed by Einstein as having ore with
high concentrations of U-235.
Answers
Answer:
21. A to m i c number
22. P o l o n i u m
23. N e p t u n i u m -239, I don't know the second one
24. U r a n i n i t e
25. M a n h a t t a n Project
Explanation:
These are just my guesses, So some of them might not be correct.
Identify the type of reaction that will occur with these reactants:
Fe(NO3)3(aq)+CaSO4(aq)
- synthesis
- decomposition
- single replacement
- double replacement
Answers
Answer:
double replacement (Mutual exchange of ions)
Explanation:
GOOD LUCK FOR THE FUTURE! :)
is CuO a covalent or ionic bond?
The electronegativity is less than 1.7, which would make it a covalent bond. But I am still not sure..
Answers
Answer:
it would be ionic
copper forms a cation and oxygen forms an anion
those charges represent the e-s that are transferred during bonding
oxygen is -2 so will accept 2 e-s to achieve noble gas configuration
Explanation:
What does c represent in the carbon cycle diagram?
Answers
Answer:
carbon
Explanation:
I'm pretty sure if not
Answer:
The adjacent diagram shows the carbon cycle with the mass of carbon, in gigatons of carbon (Gt C), in each sink and for each process, if known. The amount of carbon being exchanged in each process determines whether the specific sink is growing or shrinking.
……….CO + ………H2 --> C8H18 + ……… H2O
Answers
Answer:
8CO + 17H2 = C8H18 + 8H2O
8, 17, 1, 8
GUYS QUICK HELP!
is a soda pop bottle a invention or an innovation?
Answers
Answer:
Invention
Explanation:
!Hope This Helps!
PLEASE HELPPPP!!! IM BEING TIMED
Based on Map 1, which statement describes the main cause of the
weather pattern known as the Arizona monsoon?
A)Much of the southwestern United States is desert.
B)Ocean water to the south of Arizona is warm.
C)Winds at this latitude tend to blow from west to east.
D)Land masses heat up more quickly than oceans.
Answers
Answer:
B)
Explanation:
This should be the correct answer, lmk if it's not
As in the given image, the weather pattern known as Arizona monsoon is caused by the winds at this latitude tend to blow from west to east. Thus, option C is correct.
What is Arizona monsoon?The Arizona Monsoon is a well-defined meteorological phenomenon that affects the southwest region of North America during the summer. It is scientifically referred to as a meteorological "singularity."
Arizona experiences its strongest wind flow during the winter months from the west or northwest, coming from California and Nevada. The winds change to a southerly or southeasterly direction as the summer months approach.
From the Pacific Ocean and the Gulf of Mexico, moisture moves northward. Statewide moisture conditions are drastically altered as a result of this alteration.
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A field of science that studies atoms and molecules is called _______
Answers
A field of science that studies atoms and molecules is referred to as chemistry.
What is chemistry?Chemistry is the discipline of science that examines the attributes, composition, and framework of elements and compounds, as well as the energy released or absorbed once they change.
Food, apparel, shelter, health, power, and clean air, water, and soil are all dependent on chemistry.
Chemical technologies improve our quality of life in a variety of ways by fixing issues in health, equipment, and energy usage.
Respiration, digestion, photosynthesis, cooking food, burning fuel such as coal and petroleum, cleaning garments and utensils, and many more are examples of chemistry in everyday life.
All of these activities occur in our daily lives and are subjected to chemical reactions.
Thus, chemistry is the field of science that studies atoms and molecules.
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Lithium hydroxide reacts with hydrobromic acid(HBr) to produce lithium bromide and water. If you
start with 3.00 moles of lithium hydroxide, how many moles of lithium bromide will be produced?
Answers
Answer:
3.00 moles of Lithium bromide will be produced
Explanation:
The reaction that takes place is:
LiOH + HBr → LiBr + H₂OBy looking at the reaction equation, we can see that the reaction of 1 mol of lithium hydroxide (LiOH) produces 1 mol of lithium bromide (LiBr). Thus, 3.00 moles of LiOH would conversely produce 3.00 moles of LiBr.
You do an experiment in which you need 0.25 mole of tyrosine (C,H11 NO3).
How many grams must you weigh out?
A). 45.3 g
B). 90.5 g
C). 181 g
D). 272 g
Answers
Answer:
B.90.5 g
Explanation:
not 100%sure hehe
Answer:
45.3
Explanation:
I got it wrong on my test and this was the only correct option for me.
Which type of fertilization is common with animals that live in the water?
1. external fertilization
2. sexual
3. internal fertilization
4. asexual
Answers
External fertilization in animals usually occurs in water or in damp areas in a process called spawning.
2. A book sits on a table. Which of the following is true?
a. The forces acting on the book are balanced.
b. The forces acting on the book are unbalanced.
C. Gravity is the only force acting on the book.
d. The net force acting on the book is 3N.
Answers
Answer:
hi
Explanation:
2 X(9) + Y (9) = 2XY (9)
A reversible reaction is represented by the equation above. The amounts of reactants and products at time 1 are shown in the particle diagram on the left. The particle diagram on the right shows the
amounts of reactants and products at time 2. Based on the diagrams, what can be inferred about the relative rates of the forward and reverse reactions between time 1 and time 2?
a. nothing can be inferred because the total number of X and Y atoms is the same
each diagram
b. Nothing can be inferred because the temperature of the system may have been changed
c. The rate of the reverse reaction is greater than the rate of the forward reaction
d. The rate of the forward reaction is greater than the rate of the reverse reaction.
Answers
Answer:
The answer is D. The rate of the forward reaction is greater than the rate of the reverse reaction.
Explanation:
The forward reaction rate was greater than the reverse reaction rate because more product is present at time 2. This is the answer from ap classroom.
The given reaction has been inferred the increased rate of forward reaction than reverse reaction. Thus, option D is correct.
The chemical reaction has been given by the combination of reactants for the formation of product. The reactants combine in the fixed proportion to form the product.
The rate of reaction has been defined as the rate of formation of product or the disappearance of reactants.
Rate of reactionThe forward reaction has been given as the rate of formation of product. The reverse reaction has been given as the rate of dissociation of product.
In the given condition, the number of reactant at time 1 are more than the reactant at time 2. This states that there has been increased formation of the product at time 2.
Thus, the given reaction has been inferred the increased rate of forward reaction than reverse reaction. Thus, option D is correct.
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Rocks created from the cooling of magma or lava are called
Group of answer choices
sedimentary
metamorphosis
igneous
metamorphic
Answers
Answer:
igneous rock
Explanation:
when magma or lava is erupted from earth crust (volcanic eruption) extrusive igneous rock is formed when the magma or lava cools down
9. Scientists are studying cellular respiration in a jungle ecosystem that has plants,
animals, and decomposers (which consume dead things). Which group or groups of
organisms in the jungle carry out cellular respiration?
plants
animals and decomposers
all organisms in the jungle
animals.
Answers
Answer:
all organisms in the jungle
Explanation:
Scientists are studying cellular respiration in a jungle ecosystem that has plants, animals and decomposers, so all organisms in the jungle carry out cellular respiration.
What is cellular respiration?Cellular respiration is a process in which organism use the oxygen molecule for the conversion of their food materials to get the chemical energy by the product of water and carbon dioxide.
This respiration process is done by all living organism like plants, animals, insects, bacteria, etc. to get energy for the other cellular functions. So, in the ecosystem of jungle plants, animals and decomposers all will perform cellular respiration.
Hence, option (c) is correct i.e. all organisms in the jungle.
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What is the electron configuration for Cl? orbital notation for Cl?
Answers
Answer:
Explanation:
Electron Configuration - [Ne] 3s² 3p⁵
Orbital Notation - Can't type that out, please see the image.