ANSWER I think its B
Explanation:
It is based on the size of seimetic waves
Answer:
b
Explanation:
when the subscript is present it is implies to which element
Answer: The element in front of the subscript is what it applies to!
Explanation:
write an essay on the importance of our cultural heritage
Answer:
write the essay
Explanation:
Scientists have categorized trees based on whether they keep or lose their leaves each year. Another logical way to categorize trees is based on the
A O types of nutrients needed to grow.
amount of oxygen that is released into the air.
B
c. O color of leaves that are produced.
DO type of fruit that is produced.
Answer:
D
Explanation:
I think but it is an better attempt than the other guy answer.
Scientists have categorized trees based on whether they keep or lose their leaves each year. Another logical way to categorize trees is based on the type of fruit that is produced.
What is fruit ?In blooming plants, the structure that contains seeds after flowering is called a fruit. Flowering plants disperse their seeds through their fruits.
A fruit is a mature, ripened ovary, along with the contents of the ovary. The ovary is the ovule-bearing reproductive structure in the plant flower. The ovary serves to enclose and protect the ovules, from the youngest stages of flower development, until the ovules become fertilized and turn into seeds.
The Latin word fructus is where the term "fruit" originally came from. This was derived from the verb fruit, which means "to enjoy." Almost anything that could be cultivated from the ground was considered "fruit" when it first entered the English language.
Thus, option D is correct.
To learn more about fruit, follow the link below;
https://brainly.com/question/1621791
#SPJ2
The smallest part of a compound that still has the physical and chemical properties of the compound is a
Answer:
atom
Explanation:
Which of the following is an example of an element:
A) H₃O
B) He
C) Ca₂CO₃
D) CaCl₂
PLEASE ANSWER QUICKLY
Answer:
He(HELIUM)
Explanation:
He (Helium) is an element as it is pure and cannot be broken into simpler substances.
Hope this helped!
~AH1807
Answer:
He (Helium)
Explanation:
its second element in periodic table.
it has two electrons in outer shell.
Explain how humans acquire the energy to function.Explain the process of cellular respiration and how we obtain this energy.
Answer:
energy = heat = producers = consumer animals =
decomposers = heat
Explanation:
this is the best
I'll give brainliest
Answer:
Number one is f 2 is c number 3 is c
Explanation:
Those are the answers
Answer:xmnjjnnnnnnnnnnnnnnnnnnnnnnxxxxxxxxxxxxxxxxxxxxxhn cfghjnbvghjmnbvghmkjhbnmjhb mjhgvbnmkjyokonownndjnxjnjdndlnjbkxnlknsjcnldx bExplanation:
first will get brainliest, thanks
Answer:
Explanation:
Because it could burn
Where is the change in the electron configuration for Na when in an
excited state? *
W
O A change in the last shell
O A change in the second and third shell
O A change in the first second and third
O No change at all
Answer: A change in the first second and third
Explanation:
An electron in the lowest energy state is called as ground state and is also known as stable energy level. An electron in the upper energy state is called as excited state and is also known as unstable energy level.
Electronic configuration represents the total number of electrons that a neutral element contains. The electrons are filled according to Afbau's rule in order of increasing energies. As the atomic number of sodium is 11. The electronic configuration of sodium will be represented in ground state as:
[tex]Na:11:1s^22s^22p^63s^1[/tex]
Thus any electron if occupies a higher shell, the atom is said to be in excited state.
first correct will get brainliest
Answer:
? I am confused. What is the question?
Explanation:
22. Wildcats, such as the lynx, are predators of rabbits. Which will MOST likely occur if a new, aggressive species of
wolf is introduced into the ecosystem that is a predator of the lynx?
A. The new species population will consume the food that the rabbits eat.
B. The population of the rabbits in the ecosystem will increase.
C. The new species population will be consumed by the lynx.
D. The population of the lynx in the ecosystem will increase.
Answer:
did you post all of the questions in the packet
Explanation:
Wildcats, such as the lynx, are predators of rabbits. The population of the rabbits in the ecosystem will increase if a new aggressive species of wolf is introduced into the ecosystem that is a predator of the lynx. Therefore, option B is correct.
What is ecosystem ?An ecosystem is a geographical area in which plants, animals, and other organisms, as well as weather and landscape, coexist to form a life bubble. Ecosystems contain both biotic (living) and abiotic (nonliving) components. Plants, animals, and other organisms are examples of biotic factors.
When there are too many predators and not enough prey, predators starve and die because they cannot find enough food. Too much prey and not enough predators leads to disease spread and resource depletion for prey species and others who live in their habitat.
Predator-prey numbers interact due to: food availability, which increases predator numbers when it is abundant but decreases them when it is scarce; concealment, which means that some prey avoid predators by hiding.
Thus, option B is correct.
To learn more about the ecosystem, follow the link;
https://brainly.com/question/13979184
#SPJ6
Which of the following questions may best be answered by studying an organism's
chromosomes?
O What sex is the organism?
O Is the organism endangered?
O Where is the organism's ecosystem?
O How does the organism obtain its food?
Nuestion
Answer:
D
Explanation:
The study of an organism's chromosomes helps in the identification of the sex of the organisms. Thus, option A is correct.
Chromosomes have been tightly bonded DNA with the genetic information of the organism. Eukaryotic humans have consisted of 23 pairs of chromosomes.
The study of chromosomes helps in the determination of the genes types and the study of genes will be related to the traits and phenotype of the organism. Among the 23 pairs of chromosomes, one pair of chromosomes has been the sex chromosome that helps in the determination of the sex of the organism.
Thus, the study of an organism's chromosomes helps in the identification of the sex of the organisms. Thus, option A is correct.
For more information about chromosomes, refer to the link:
https://brainly.com/question/1596925
How many grams of neutral salt will be obtained in the reaction of calcium oxide with 200 cm 3 of phosphoric acid solution whose concentration is 0.3 mol / dm 3
Answer:
9.3 g of Ca3(PO4)2
Explanation:
We'll begin by writing the balanced equation for the reaction. This is illustrated below:
3CaO + 2H3PO4 —> Ca3(PO4)2 + 3H2O
Next, we shall determine the number of mole of H3PO4 present in 200 cm³ of 0.3 mol/dm³ phosphoric acid (H3PO4) solution. This can be obtained as follow:
Molarity of H3PO4 = 0.3 mol/dm³
Volume = 200 cm³ = 200 cm³/1000 = 0.2 dm³
Mole of H3PO4 =?
Molarity = mole /Volume
0.3 = mole of H3PO4 /0.2
Cross multiply
Mole of H3PO4 = 0.3 × 0.2
Mole of H3PO4 = 0.06 mole
Next, we shall determine the number of mole of the salt, Ca3(PO4)2, obtained from the reaction. This can be obtained as shown below:
3CaO + 2H3PO4 —> Ca3(PO4)2 + 3H2O
From the balanced equation above,
2 moles of H3PO4 reacted to produced 1 mole of Ca3(PO4)2.
Therefore, 0.06 moles of H3PO4 will react to produce = (0.06 × 1)/2 = 0.03 mole of Ca3(PO4)2.
Thus, 0.03 mole of Ca3(PO4)2 is produced from the reaction.
Finally, we shall determine the mass of Ca3(PO4)2 produced as follow:
Mole of Ca3(PO4)2 = 0.03 mole
Molar mass of Ca3(PO4)2 = (40×3) + 2[31 + (16×4)]
= 120 + 2[31 + 64]
= 120 + 2[95]
= 120 + 190
= 310 g/mol
Mass of Ca3(PO4)2 =?
Mole = mass /Molar mass
0.03 = mass of Ca3(PO4)2 / 310
Cross multiply
Mass of Ca3(PO4)2 = 0.03 × 310
Mass of Ca3(PO4)2 = 9.3 g
Thus, 9.3 g of Ca3(PO4)2 was obtained from the reaction.
4. Paper by itself catches fire easily whereas a piece of paper wrapped around an aluminium pipe does
not. Why?
Answer:
Paper by itself catches fire easily whereas a piece of paper wrapped around an aluminium pipe does not. The ignition temperature of paper is less, so it catches fire easily. It does not catch fire when wrapped around aluminium pipe because aluminium absorbs the heat, so paper does not attain its ignition temperature.
What's the volume ratio of two KOH solutions with conentrations of 10^-2M and 10^-4M to obtain a solution with a pH=11?
I care more about how it's solved
We know, pH + pOH = 14
pOH = -log[OH⁻]
11 = -log[OH⁻]
log[OH⁻] = -11
[OH⁻] = 10⁻¹¹ M
For 10⁻⁴ M of solution, volume required is :
10⁻⁴ × 1 = 10⁻¹¹ × V₁
V₁ = 10⁷ units.
Similarly for 10⁻² M :
10⁻² × 1 = 10⁻¹¹ × V₂
V₂ = 10⁹ units.
Therefore, the ratio of volume is 10⁷/10⁹ = 10⁻² units.
Why is the SI unit for force Newton's?
Answer:
The newton (symbol: N) is the SI unit of force. It is named after Sir Isaac Newton because of his work on classical mechanics. A newton is how much force is required to make a mass of one kilogram accelerate at a rate of one metre per second squared.
An engineer thinks that changing the catalyst used in a chemical reaction will
increase the rate of the reaction. This is an example of which step in the
engineering process?
A. Manufacture and test a prototype.
B. Identify solutions to the problem.
C. Plan a detailed design.
D. Research the problem.
Answer:
B. Identify solutions to the problem.
Explanation:
In the case described above, the engineer has already designed and attempted to manufacture a prototype for the process. The design of the process must have also been carefully researched and planed.
However, he identified the problem of low yield and is now working towards identifying solutions to the problem. One option he seeks to explore according to the question is to change the catalyst used in the reaction.
True or false? Buildings that are right on top of seismic waves that have really short wavelengths experience the least damage than buildings that are on top of seismic waves with long wavelengths.
Answer:
Your answer is false
Explanation:
957 8339 9168 I’d
972205 passcode
Chemistry class
Answer:okay
Explanation:
I need help with these two please!!!!!
Answer:
First one c for the second one i think is c sorry if wrong hope this help
Explanation:
The work needed to operate a machine is called work output
O True
O False
Hurry up i'm being times shdsy93u20
The chart shows masses and velocities of four objects.
A 3-column table with 4 rows titled Motion of 4 Objects. The first column labeled Object has entries W, X, Y, Z. The second column labeled Mass (kilograms) has entries 12, 15, 18, 28. The third column labeled Velocity (meters per second) has entries 5, 8, 2, 10.
Which lists the objects in order, from least to greatest momentum?
A. W, X, Y, Z
B. Z, Y, X, W
C. Z, X, W, Y
D. Y, W, X, Z
Answer:
its D
Explanation:
Took test 2021 edge
Answer:
The correct answer is D: Y, W, X, Z.
Explanation:
The correct answer is D: Y, W, X, Z.
Oxygen and sugar is transported to cells by the what system
1. Excretory system
2. Nervous system
3. Circulatory system
Answer:
the circulatory system
A force of 20N acts on an object. It causes a displacement of 500 cm in the direction of force. What would be the work done in Nm on the object?
Answer:
500/100=5m
W=F*D
W=20*5=100Nm
Explanation:
The work done in Nm on the object is 100 Nm
Calculation of the work done:
Since A force of 20N acts on an object. It causes a displacement of 500 cm in the direction of the force.
Since the displacement is in cm
So, in meters, it should be like
= 500 / 100
= 5 m
Now we know that
Work done = force * displacement
= 20N * 5
= 100 Nm
hence, The work done in Nm on the object is 100 Nm
Learn more about force here: https://brainly.com/question/21535944
A student described two properties of a substance as shown.
Properties of Substance
Property Description
X The substance catches fire easily.
Y A substance spontaneously explodes when exposed to other substances.
Which of the following is true about the two properties described in the table?
Both are physical properties.
Both are chemical properties.
X is a chemical property and Y is a physical property.
X is a physical property and Y is a chemical property.
Answer:
X is a chemical property and Y is a physical property.
Explanation:
i did it.
The branch of science which deals the chemicals is called chemistry.
The correct answer of the following is B.
The compound has the different properties that are:-
Chemical Physical.According to the question, the X is the substance that catches fire easily which shoes the physical nature of the substance, and the Y is the substance that explodes when it reacts with some other compound. This signifies its chemical property as a reaction is chemical in nature.
Hence, the correct option is B.
For more information, refer to the link:-
https://brainly.com/question/25026730
7. This value tells the number of protons that are in an atom *
atomic mass
atomic number
mass number
Answer:
Explanation:
55 newtons
True or false
The maximum number of electrons in the second energy level of an
atom is 4.
What is the outre layer and large part of the sun´s atmosphere
Answer:
Our Sun. Corona – The outer layer of sun's atmosphere. Sunspot – A dark area of gas on the sun's surface that is cooler than surrounding gases. Prominence – A huge, reddish loop of gas that protrudes from the sun's surface, linking part of sunspot regions.
Limescale removers contain sulfamic acid, H3NSO3, which reacts with minerals in hard water
stains such as calcium carbonate: 2H3NSO3 +CaCO3 + Ca(SO3NH2)2 + CO2 + H2O.
How many moles of calcium carbonate will react with 0.75 moles of sulfamic acid?
Answer:
0.375 moles of CaCO₃ are required
Explanation:
Given data:
Number of moles of sulfamic acid = 0.75 mol
Number of moles of calcium carbonate required = ?
Solution:
Chemical equation:
2H₃NSO₃ + CaCO₃ → Ca(SO₃NH₂)₂ + CO₂ + H₂O
Now we will compare the moles of H₃NSO₃ and CaCO₃ .
H₃NSO₃ : CaCO₃
2 : 1
0.75 : 1/2×0.75 = 0.375 mol
Thus, 0.375 moles of CaCO₃ are required.
The moles of the product and the reactant in the reaction is given by the stoichiometric law. The moles of calcium carbonate in the reaction is 0.375 mol.
What is a stoichiometric law?The stoichiometric law defines that the moles of the reactant and the product in the reaction is equivalent to the stoichiometric coefficient in the balanced chemical equation.
From the given balanced chemical equation, 1 mole of calcium carbonate reacts with 2 moles of sulfamic acid.
The moles of calcium carbonate react with 0.75 moles of sulfamic acid is:
[tex]\rm 2\;mol\;H_3NSO_3=1\;mol\;CaCO_3\\0.75\;mol\;H_3NSO_3=\dfrac{1}{2}\;\times\;0.75\;mol\;CaCO_3\\ 0.75\;mol\;H_3NSO_3=0.375\;mol\;CaCO_3[/tex]
The moles of calcium carbonate in the reaction will be 0.375 mol.
Learn more about moles reacted, here:
https://brainly.com/question/24817060
1) What is bioluminescence?
