what is genetic tagging
Answer:
Genetic tagging, or the identification and tracking of individual animals using DNA, is a non-invasive method of conducting research that uses samples from shed hair, feathers, feces, or saliva. ... Genetic tagging approaches are complementary to traditional approaches and add a powerful tool to the ecologists' toolkit."
Explanation:
Wildflowers bloom earlier than large trees. This helps wildflowers compete for _____. water, light, food, or air
Answer: Light
Explanation:
The environment abiotic factors like sunlight, water, air, and soil are important for the growth of the plants. A wildflowers is a plant that grows in wild. It was not intentionally seeded or planted.
The light is one of the important environmental factor. As the wildflowers are blooming earlier than the large trees. Thus the wildflowers are receiving the light earlier than large trees.
What is the correct order of processes in the accretion of planetesimals?
Answer:
A). Collapse, condensation, accretion, clearing.
Explanation:
Planetesimals are described as the small solid astronomical objects which are the building blocks for the formation of solid planets. Accretion is described as the process in which the solid astronomical objects cluster to form larger objects that eventually leads to the formation of planets.
As per the question, the correct order of processes that are followed in this accretion process would be a collapse, condensation, accretion, clearing. First occurs the collapse of a nebula followed by condensation of cosmic dust grains. After this, the accession or accumulation of solid parts takes place to form larger objects and this is immediately followed by the clearing of debris and dust to allow planets to form. Thus, option A is the correct answer.
Answer:
a
Explanation:
Consider the following reversible reaction. CO(g)+2H2(g) CH3OH(g) What is the equilibrium constant expression for the given system?
Kc=28.7 is the equilibrium constant
How is the equilibrium constant 28.7 explain?
[CO]=26.7g(28.01g/mol)(5.25L)=0.182M
[H2]=2.33g(2.016g/mol)(5.25L)=0.220M
[CH3OH]=8.65g(32.04g/mol)(5.25L)=0.0514M
Kc= x/(0.182−x)(0.220−2x)2
= 0.0514/(0.182−0.0514)(0.220−2(0.0514))2
= 28.7
What is equilibrium constant?a number that expresses the relationship between the amounts of products and reactants present at equilibrium in a reversible chemical reaction at a given temperature.
So, this shows the equilibirum constant is 28.7
learn more about equilibirum constant here;
https://brainly.com/question/12958543
#SPJ2
Which is evidence that a chemical reaction has likely occurred?
a liquid slowly losing volume
the formation of a precipitate
boiling water releasing steam
a change in the shape of a solid
Answer:
The formation of a precipitate
Explanation:
took thecquiz on edge. got it correct
The formation of a precipitate is a evidence that a chemical reaction has likely occurred.
What is Chemical Reaction ?
A chemical reaction is a process in which chemical bonds between atoms to break and reorganize, to form other new substances.
Evidence of a Chemical Reactionformation of precipitate a change in colorformation of a gastemperatureodor changeNow lets check all option one by one
Option (A): a liquid slowly losing volume
Here change in volume occurred which is not a evidence of a chemical reaction.
So it is incorrect option.
Option (B): the formation of a precipitate
Here formation of precipitate is a evidence of a chemical reaction.
So it is correct option.
Option (C): boiling water releasing steam
Here formation of evaporation takes places which is not a evidence of a chemical reaction.
So it is incorrect option.
Option (D): a change in the shape of solid.
Here change in shape occurred which is not a evidence of a chemical reaction.
So it is incorrect option.
Thus, from we can say that the formation of a precipitate is a evidence that a chemical reaction has likely occurred.
Learn more about Evidence of chemical reaction here: https://brainly.com/question/16564188
#SPJ2
What is the molar mass of sulfur trioxide?
Answer:
80.07 g/mol
Explanation:
Sulfur's g/mol = 32.07
Oxygen's g/mol = 16.00
32.07 + 16.00(3) = 80.07 g/mol
Answer:
80.07 g/mol
Explanation:
Hydrochloric acid and sodium hydroxide can be combined to form sodium chloride and water. Which best explains the reaction? The mass of sodium hydroxide will result in the same mass of sodium chloride. The total mass of hydrochloric acid and sodium hydroxide will result in a lower total mass of sodium chloride and water. The mass of hydrochloride acid will result in the same mass of sodium chloride. The total mass of hydrochloric acid and sodium hydroxide will result in the same total mass of sodium chloride and water.
Answer:
The statement "The total mass of hydrochloric acid and sodium hydroxide will result in the same total mass of sodium chloride and water." is true due to the Law of Conservation of Mass which states that matter cannot be created nor destroyed.
The correct answer to the question is: The total mass of hydrochloric acid and sodium hydroxide will result in the same total mass of sodium chloride and water.
Chemical equation is backed up by the law of conservation of matter (mass) which states that matter can neither be created nor destroyed during a chemical reaction but can be transferred from one form to the other.
Thus,
The total mass of reactants is equal to the total mass of products.
For example: let us consider the reaction between hydrogen and oxygen to produce water
2H₂ + O₂ —> 2H₂OReactant:2H₂ = 2(2×1) = 2(2) = 4 g
O₂ = 2 × 16 = 32 g
Total mass = 4 + 32 = 36 gProduct:2H₂O = 2[(2×1) + 16]
= 2[2 + 16]
= 2[18]
Total mass = 36 gThus,
Mass of reactant = mass of productFrom the above illustration, we can conclude that the total mass of hydrochloric acid and sodium hydroxide will result in the same total mass of sodium chloride and water.
Learn more: https://brainly.com/question/9434062
Which reaction does not involve neutralization? A. H 2 SO 4 + 2NH 3 -------> (NH 4 ) 2 SO 4 B. H 2 SO 4 + BaCl 2 --------> BaSO 4 + 2HCl C. H 2 SO 4 + CuO -----> CuSO 4 + H 2 O D. H 2 SO 4 + 2NaOH ----> Na 2 SO 4 + 2H 2 O
Answer:
B. H2SO4 + BaCl 2 --------> BaSO4 + 2HCl
Explanation:
Neutralization reactions are characterized by their reactants of acids and bases reacting to form salt and water. All of the options except B, have formation of salt and water. Also, B is more likely a percipitation reaction (also a double displacement reaction) and not neutralization.
If the frequency of a wave is 68 hertz then the period of the wave is going to be
Answer:
0.01471 seconds
Explanation:
the period of a wave is given by 1/frequency.
1. Which of these show a diatomic element?
CO
H₂
He
SO₂
2. Which of these substances is an element?
Chlorine
Ice
Methane
Sodium chloride
3. When the elements lead and bromine combine together, the name of the substance formed is called .......
Lead bromate
Lead bromide
Lead bromite
Lead bromium
Answer:
1) H2
2) Chlorine
3) Lead bromide
Consider the word equation.
calcium hydroxide + hydrochloric acid → calcium chloride + water
Which is the corresponding formula equation?
A: CaCl2(1)→ Ca(s) + Cl2(g)
B: O CaO(s)+ H2O(1)>Ca(OH)2(aq)
C: NaOH(aq) + 2HCl(aq) → NaCl(aq) + 2H2O(1)
D: Ca(OH)2(S) + 2HCI(I) → CaCl2(aq) + 2H20(1)
The chemical equation for the given word equation is Ca(OH)[tex]_2[/tex](S) + 2HCI(I) → CaCl[tex]_2[/tex](aq) + 2H[tex]_2[/tex]0(1). Therefore, the correct option is option D.
Chemical equations are symbols or chemical formulas that depict a chemical reaction symbolically. With a plus sign separating the entities in the reactants and products, the reactant objects are listed on the left as well as the result entities are listed on the right.
An arrow indicating the reaction's direction points in the path of the products. The chemical formulas could be mixed, symbolic, or structural. The critical values of a stoichiometric figures are shown as coefficients beside the symbols as well as formulas of the various entities. The chemical equation for the given word equation is Ca(OH)[tex]_2[/tex](S) + 2HCI(I) → CaCl[tex]_2[/tex](aq) + 2H[tex]_2[/tex]0(1).
Therefore, the correct option is option D.
To learn more about Chemical equations, here:
https://brainly.com/question/28294176
#SPJ7
SO3 is an empirical formula for which of the following?
Answer:
what are the options
Explanation:
there are no options
SO₃ is an empirical formula for S₂O₆ and the correct option is option C.
The empirical formula of a compound represents the simplest, most reduced ratio of the atoms present in the compound. It shows the relative number of atoms of each element in the compound, without indicating the actual number of atoms. In other words, it gives the simplest whole number ratio of the elements in a compound.
To determine the empirical formula, the relative amounts of each element in the compound are expressed in terms of moles or mass. Then, the ratios of the moles or masses are simplified to their lowest whole number values.
Thus, the ideal selection is option C.
Learn more about Empirical formula, here:
https://brainly.com/question/32125056
#SPJ6
The complete question is -
SO₃ is an empirical formula for which of the following?
A. S₄O₂
B. SO₄
C. S₂O₆
D. S₂O₃
Complete the following ionic equation: [tex]Zn + 2Ag^{+} ---\ \textgreater \ ......... + ..........[/tex]
Answer: [tex]Zn+2Ag^+\rightarrow Zn^{2+}+2Ag[/tex]
Explanation:
Oxidation-reduction reaction or redox reaction is defined as the reaction in which oxidation and reduction reactions occur simultaneously and the number of electrons lost is equal to the number of electrons gained.
Oxidation reaction is defined as the reaction in which a substance looses its electrons. The oxidation state of the substance increases.
Anode : [tex]Zn\rightarrow Zn^{2+}+2e^-[/tex]
Reduction reaction is defined as the reaction in which a substance gains electrons. The oxidation state of the substance gets reduced.
Cathode : [tex]2Ag^++2e^-\rightarrow 2Ag[/tex]
Thus the complete ionic equation will be :
[tex]Zn+2Ag^+\rightarrow Zn^{2+}+2Ag[/tex]
Classify the changes involved in the following processes as physical or chemical changes: (a) Photosynthesis (b) Dissolving sugar in water (c) Burning of coal (d) Melting of wax (e) Beating aluminium to make aluminium foil (f) Digestion of food
Explanation:
a. chemical change
b. Physical change.
c. chemical change.
d. chemical change
e. Physical change.
f. chemical change.
Two compounds are standing at the same temperature. Compound "A" is evaporating more slowly than compound "B." According to the Kinetic Molecular Theory, which assumption can be made? A.) Compound B has a greater average kinetic energy. B.) Compound A has a greater average kinetic energy. C.) Compound A may have a lower molecular weight. D.) Compound B may have a lower molecular weight.
Answer:
Option D) Compound B may have a lower molecular weight.
Explanation:
Compound A and B are standing at the same temperature yet compound A is evaporating more slowly than compound B.
This simply indicates that compound B have a lower molecular weight than compound A.
This can further be seen when gasoline and kerosene are placed under same temperature. The gasoline will evaporate faster than kerosene because the molecular weight of the gasoline is low when compared to that of the kerosene.
What is the pH of a 0.45 M solution of hydrochloric acid
pH = 0.35
Explanation: hope this helps
Answer: 0.35
Explanation:
Why is corn considered a material resource and an energy resource?
Answer:
This is because Corn is grown on land and has important values to man .These values include as a source of food for man and animals. It is also used as raw materials for the production of certain goods such as flour etc.
It is an energy resource because fermentation of corn gives rise to ethanol fuel which is used as a source of power to run machines and other equipment.
compare the contrast the arrangment of elements in mendeleev prodic table and mordern prodic table
Answer: In Mendeleeve periodic table the elements are arranged in increasing atomic mass, whereas in the modern periodic table the elements are arranged in increasing atomic number. The further differences are as follows:
Explanation:
In Mendeleev periodic table there are 9 verticle columns, whereas in modern periodic table there are 18 verticle columns.
A group of nobel gases was not discovered in the Mendeleev periodic table, whereas the a nobel gas was placed separately in the modern periodic table.
Answer:
The elements are arranged in the growing order of atomic masses in Mendeleev's periodic table. On the other hand, the cells are placed in the modern periodic table in the vastly increased order of increasing atomic numbers that is a more fundamental characteristic than the orbital radius.
Explanation:
The stance of the elements throughout the Mendeleev periodic table was to comply with the atomic mass. The position of the elements in the modern periodic table is controlled by the electronic structure, which evaluates their characteristics. The place of isotopes in Mendeleev's periodic table was not justified. The category is based mostly on the number of atoms and not the molar weight in the periodic table of elements and thus is justified the location of isotopes. The periodic table provided by Mendeleev had some linguistic factors on the atomic mass. There have been no defects in current periodic law as regards atomic number. For example, potassium had a lesser height in Mendeleev's periodic table than argon. But this has been solved in the Modern periodic table. Argon supersedes phosphorus as atomic number 18 is argon, so potassium has 19. The periodic table on Mendeleev does not authors would like to thank why the characteristics of the components are replicated at frequent intervals of 2, 8, 18, and 32. That is paper outlines by the periodic table of elements. The periodic table of Mendeleev contains no clear cut components of different types of elements. There is a clear cut separation of different types of elements in the modern periodic table, like representative elements, oxygen atoms, affect consumers. The periodic table provided by Mendeleev is not easy to remember. The periodic table Traditional is easy to recall.an element p has atomic number 13 while q has the atomic 16..write down electric configuration of p and q
Answer:
P = 2,8,3
q = 2,8,6
Explanation:
Because the first shell contain 2 electron and the 2nd contain 8 electron and the last shell contain the electron which is left
Explanation:
p=1s^2,2s^2,2p^6,3s^2,3p^1
q=1s^2,2s^2,2p^6,3s^2,3p^4
the quantum numbers are used in my answer.
there are 4 quantum numbers.
1.principal quantum numbers
2.angular momentum quantum numbers
3.magnetic quantum numbers
4.spin quantum numbers
In this case,the angular momentum quantum numbers is being used.it describes the unique quantum state of an electron and is designated by the letter L.this behaviour manifests itself as the shape of the orbital.electron shells have distinct shapes denoted by letters,s,p,d,f.
l can be numbers like,0,1,2,3
the maximum electrons in each letter is,
s=2
p=6
d=10
f=14
the shapes of the sub_shells
s sub_shell is spherical
p sub_shell is two dumb_bells
d sub_shell is four dumb_bells
f sub_shell is eight dumb_bells
does the volume of a liquid change
Answer:
Yes it does change
Explanation:
Why is sodium stored in kerosene oil?
Answer:
Sodium is stored under kerosene because of its high chemical reactivity with almost all of other elements (for example oxygen from air which oxidizes it instantly). Kerosene and mineral oil are the only chemicals that make the sodium inert. Usually when Na reacts with a solvent it liberates hydrogen gas from its composition.
Explanation: Just saying , I want to be honest. I copied and pasted this from google
I NEED HELP PLEASE! :)
-Provide TWO math based “you solve it” questions with answers for EACH of the laws. Please be sure to explain in detail how to solve the problems.
Answer:
See below.
Explanation:
1. Newton's first law
(a) Problem 1
What is the net force required to keep a 500 kg object moving with a constant velocity of 10 m·s?
Answer: None.
Explanation: An object in motion stays in motion unless a net force acts on it.
The object will keep moving at 10 m/s.
(b) Problem 2
A force of 20 N acts on a 10 kg object from the left. A force of 30 N acts on it from the right. What is the net force required to keep the object moving with a constant velocity of 10 m/s?
Answer: 20 N
Explanation:
The net force is
30 N - 20 N = 10 N
You must apply another 10 N from the left. The net force is then:
30 N - 30 N = 0
If there is no net force, the object will keep moving at 10 m/s.
2. Newton's second law
(a) Problem 1
What is the net force needed to accelerate an object at a constant 5 m·s⁻²?
Answer: 5 N
Explanation:
F = ma = 1 kg × 5 m·s⁻² = 5 kg·m·s⁻² = 5 N
(a) Problem 2
A net force of 2 N acts on a 1 kg object. What is the magnitude and direction of the acceleration?
Answer: 2 m·s⁻²
Explanation:
F = ma
2 N = 1 kg × a
a = (2 N)/(1 kg) = (2 kg·m·s⁻²\1 kg) = 2 m·s⁻²
The direction of the acceleration is the same as that of the applied force.
2. Newton's third law
(a) Problem 1
A person with a mass of 58 kg is standing near you. Diagram and calculate the opposing forces.
Answer: 570 N up and down
Explanation:
See Fig. 1. The person's mass exerts a downward force on the floor.
F = mg, where g is the acceleration due to Earth's gravity
F = 58 kg × 9.8 m·s⁻² = 570 kg·m·s⁻² = 570 N
The floor exerts an upward force of 570 N.
(a) Problem 2
A teacher (mass 65 kg) pushes a cart (mass = 12 kg) of equipment (mass = 7 kg). Her foot applies a force of 150 N backward on the floor against a frictional force of 24 N. Diagram the opposing forces and calculate the net force available to move the cart.
Answer: 126 N
Explanation:
See Fig. 2 below. The teacher's mass exerts a downward force W on the floor, which exerts an equal reaction force R upward. The cart and equipment also exert a downward force on the floor, which exerts the same force upward. We can ignore these forces because they do not contribute to forward motion.
The teacher's foot exerts a backward force of 150 N on the floor, which exerts an equal force forward. However, a frictional force of 24 N opposes the forward force.
The net external force is the force of the floor minus the opposing frictional force. Thus,
F = 150 N − 24 N = 126 N
Which claim about cats is most likely based on science?
O A. Egyptian myths explain that the sun god, Ra, appeared in living
form as a cat.
O B. Fairy tales during the Middle Ages said that cats are evil and that
they spread plague.
C. Ancient Eastern cultures believed that cats should be held in high
regard.
D. Genetic data show that modern domestic cats are related to Near
Eastern wildcats.
Answer:D
Explanation:
The claim about cats is most likely based on science is Genetic data show that modern domestic cats are related to Near Eastern wildcats. The correct option is D.
What is a claim?A claim is a statement that is given by a person about his or her things, and they claim that the thing. It gives proof that a thing or house is a person's property.
Genetic data is the data of the genetic sequence of a person's genetic information. It is different for every person. So genetic data is very important.
So the scientific data will be the genetic data of cats that is claiming that domestic cats are related to Near Eastern wildcats. It is most likely a scientific claim.
Thus, the correct option is D. Genetic data show that modern domestic cats are related to Near Eastern wildcats.
To learn more about the claim, refer to the link:
https://brainly.com/question/14551819
#SPJ2
What causes the sea floor to move apart at a sea floor spreading center A density B continental drift C paleomagnetism D convection currents
Answer: D convection currents
Explanation:
The seafloor spreading is a phenomena that occurs due to liberation of heat from the convection currents generated in the mantle. It makes the earth crust more plastic and less dense. This happens at divergent plate boundaries. As the plates move apart, the less denser material rises. It leads to the formation of mountain and crust cracks.
A chemistry student in lab needs to fill a temperature-control tank with water. The tank measures 24.0 cm long by 21.0 cm wide by 13.0 cm deep.
In addition, as shown in the sketch below, the student needs to allow 2.0 cm between the top of the tank and the top of the water, and a round-bottom flask
with a diameter of 10.5 cm will be just barely submerged in the water.
Calculate the volume of water in liters which the student needs. Round your answer to the nearest 0.1 L. ol.2 cm
M
flask
OL
6
water
Answer:
The required volume of water the student needs is 4.9 litres of water
Explanation:
From the diagram related to the question, we have;
The dimensions of the tank are;
Length of tank = 24.0 cm = 0.24 m
Width of tank = 21.0 cm = 0.21 m
Depth of tank = 13.0 cm. = 0.13 m
Allowance provided between the top of the tank and the top of the water = 2.0 cm
Diameter of the round bottom flask, D = 10.5 cm = 0.105 m
Therefore, the radius of the round bottom flask, r = 0.105/2 = 0.0525 m
Therefore we have;
Depth of water in the tank = Depth of tank - Allowance provided between the top of the tank and the top of the water
∴ Depth of water in the tank = 13.0 - 2.0 = 11.0 cm = 0.11 m
Given that the flask is immersed in the water contained in the tank to raise the tank water level, we have;
Volume of water + Volume of flask in the tank = Length of tank × Width of tank × Depth of water in the tank
Volume of water + Volume of flask in the tank = 0.24 × 0.21 × 0.11 = 0.005544 m³ = 0.005544 m³× 1000 l/m³ = 5.544 l
The volume of the spherical flask = 4/3·π·r³ = 4/3·π·0.0525³ = 6.06×10⁻⁴ m³ = 6.06×10⁻⁴ m³ × 1000 l/m³ = 0.606 l
The required volume of water the student needs , V = Volume of water + Volume of flask in the tank - The volume of the spherical flask = 5.544 l - 0.606 l = 4.9 l.
which of these liquids is the least acidic?
Answer:
The answer is lemonade.
Weaker acids are those which tend to have a higher pH from 4 to at least 6 stronger acids have low pH from 2 and below that's from 2 to 0.
Hope this helps
Hope
If 0.360 J of heat is added to 0.7402 g of water, how much will the temperature increase?
Answer:
You are not supposed t9 be cheating
Explanation:
Answer:
ΔT = 0.116 °C
Explanation:
Using Formula
Q = mc ΔT
Where Q = 0.360, c = 4.184 and m = 0.7402
ΔT = Q/mc
ΔT = 0.360/ (4.184)(0.7402)
ΔT = 0.360 / 3.097
ΔT = 0.116 °C
So, The change in Temperature/Increase in Temperature is 0.116 °C
Why do reactions need to be balanced?
A. Because the reactants must be the exact same as the products
B. Because of the conservation of energy
C. Because the volume of reactants must equal the volume of
products
D. Because atoms are not lost or gained in a chemical reaction
Answer:
A part.
Explanation:
Because the reactants must be the exact same as the the products.
Mass box A = 10 grams; Mass box B = 5 grams; Mass box C—made of one A and one B
How many boxes of A would be required to make 30 grams of C?
Answer:
the answer would be 2
Explanation:
yoooo help me w this one
Answer:
0.84kg of gatorade powder
Explanation:
From the question given, we were told that 0.6kg of gatorade powder required 5 gallons of water.
To obtain the mass of gatorade needed for 7 gallons of water, we simply do the following:
0.6kg of gatorade powder required 5 gallons of water.
Therefore, xkg of gatorade powder will require 7 gallons of water i.e
xkg of gatorade powder = (0.6 x 7)/5
xkg of gatorade powder = 0.84kg
Therefore, 0.84kg of gatorade powder will be required.