Answer:
(4) sperm - transports genetic material
Explanation:
Which reproductive structure is correctly paired with its function'?
(1) uterus - usual site of fertilization
(2) testis - usual location for egg development
(3) ovary - delivers nutrients to the embryo
(4) sperm - transports genetic material
Solution:
The uterus (also known as the womb) is where the fertiled egg (foetus) stays until it is ready to be delivered. The usual site of fertilization is the fallopian tube.
The testis is responsible for the production of sperm and hormones. The uterus is where the egg development takes place.
The ovary is responsible for the production of egg and hormones. The embryo receives nutrient through the fetus.
The sperm transports genetic material to the ovum.
Answer:
4
Explanation:
because ovaries def do not deliver nutrients to the embryo thats the placenta and the testis are DEF not a site for egg development and the uterus is not where fertilization happens i believe its where the fetus is kept and therefore the only correct answer is 4 :)
hey what's the value of pi till
5 digits after decimal
Answer:
Pi to 5 decimals is 3.14159-
Brainlist pls!
P.S. It's a repeating number, but you can just put a (-), so that you don't have to type the whole thing out.
Answer:
sorry raaz report mat kerna
points collect kr rehe hai
Which of the following is an example of a chemical property?
a. color
b. density
c. phase
d. the ability to rust
PLZ HELP! THIS IS DUE IN A FEW MINS!
What would happen to work and power if the mass of the person walking was increased or decreased? EXPLAIN.
Answer:
work and power increases or decreases opposite of the mass
Explanation:
This Is beacuse Work is the product of Mass, Gravity, and Height
what is 4.9 + 3.822 is sig fig?
Answer: 4.9 + 3.822 = 8.7
Explanation: Hope this helps
Answer: 8.722
Explanation:
How is light energy converted to chemical energy?
Answer:
Photosynthesis is the process in which light energy is converted to chemical energy in the form of sugars. In a process driven by light energy, glucose molecules (or other sugars) are constructed from water and carbon dioxide, and oxygen is released as a byproduct.
Explanation:
Answer:
Photosynthesis is the process in which light energy
Explanation:
How do I know if something is either a nonpolar or polar substance?
Answer:Read explanation
Explanation:
A polar molecule has a net dipole as a result of the opposing charges (i.e. having partial positive and partial negative charges) from polar bonds arranged asymmetrically. Water (H2O) is an example of a polar molecule since it has a slight positive charge on one side and a slight negative charge on the other. A non polar substance we be the opposite of what I said
(HELP PLEASE )A solid is being cooled down.
What is happening to the particles of the solid?
Answer: the vibration becomes faster
Explanation:
Calculate the molarity of a solution prepared by dissolving 2.50 mol of KCl into 2.00 L of solution.
________ M
Answer:
1.25 M
Explanation:
The molarity is found dividing the moles of solute by the litres of solution.
2.50 mol ÷ 2 L = 1.25 M
The concentration terms are molality, normality and mole fraction. Molarity can be used to find out the ionic strength of any solution. Therefore, the molarity of a solution prepared by dissolving 2.50mol of KCl into 2.00 L of solution is 1.25 M.
What is molarity?Molarity can be calculated by dividing number of moles of solute by volume of solution in liter. Molarity is affected by temperature. Its unit is mole/liter. It measure the concentration of any solute in a solution.
Mathematically,
Molarity= number of moles of solute/volume of solution in liter
number of moles of solute KCl= 2.50 mol
volume of solution in litre = 2.00 L
substituting all the given values in the above equation, we get
Molarity= 2.50 mol ÷ 2 L
Molarity = 1.25 M
Therefore, the molarity of a solution prepared by dissolving 2.50mol of KCl into 2.00 L of solution is 1.25 M.
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HELPP ASAP PLEASE SEE IMAGES
Answer:
1st paragraph:
1.compound 2.physical 3.elements 4.water 5. gas 6.white 7. season 8.ratio 9.formula 10.elements 11.atoms 12.subscript 13.one
2nd paragraph
1.stable 2.many/reactive 3.eight 4.helium 5.seven 6.outer 7.one 8.level 9. compounds 10.reactive 11. seven 12. Eight 13.lose 14.gain 15. Share 16.compounds 17. atoms
Explanation:
I just did the 1st page. Gimme a min and I'll do the second.
How many grams do you have in: 5.3 moles of Zr(NO3)4
Answer:
1800 g Zr(NO₃)₄
General Formulas and Concepts:
Chemistry - Atomic Structure
Reading a Periodic TableUsing Dimensional AnalysisExplanation:
Step 1: Define
5.3 mol Zr(NO₃)₄
Step 2: Identify Conversions
Molar Mass of Zr - 91.22 g/mol
Molar Mass of N - 14.01 g/mol
Molar Mass of O - 16.00 g/mol
Molar Mass of Zr(NO₃)₄ - 91.22 + 4(14.01) + 12(16.00) = 338.26 g/mol
Step 3: Convert
[tex]5.3 \ mol \ Zr(NO_3)_4(\frac{339.26 \ g\ Zr(NO_3)_4}{1 \ mol \ Zr(NO_3)_4} )[/tex] = 1798.08 g Zr(NO₃)₄
Step 4: Check
We are given 2 sig figs. Follow sig fig rules and round.
1798.08 g Zr(NO₃)₄ ≈ 1800 g Zr(NO₃)₄
Plastic is used to cover the copper wire in the power codes of appliances because plastic differs from copper in _________
Answer:
in copper from different plastics because appliances of codes to power day in wire copper the cover to use to plastic
how dose the scientist know the substances goes through a change of state during the time period labeled B on the graph?
Answer:
The temperature remains constant
Explanation:
In a plot of temperature against time, it is easy to spot the points on the graph where a change of state is taking place.
During a change of state, the temperature does not not change with time. These are points that are plateaus on the temperature-time graph.
This is because, during phase change, the heat that is added is used in breaking intermolecular forces therefore a temperature change is not observed until the phase change is complete.
Which of the following electron configurations correspond to an excited state? Identify the atoms and write the full, ground state electron configuration where appropriate.
1s22s23p1
1s22s2sp6
1s22s22p43s1
[Ar] 4s23d54p1
Electron configurations correspond to an excited state is 1s₂, 2s₂, 3p₁.The electrical configuration 1s₂, 2s₂, 3s₁ demonstrates that the atom is in the excited state.
What is electronic configuration ?The distribution of an atom's or molecule's electrons in atomic or molecular orbitals is known as the electron configuration in atomic physics and quantum chemistry.
An electron is in an excited state when it momentarily possesses an energy level higher than its ground state. If an electron receives more energy, such as when it absorbs a photon, or packet, of light, or collides with an adjacent atom or particle, it can become excited.
The primary distinction between a system's ground state and excited state is that a system's ground state is any condition in which its electrons are at their lowest potential energy levels, whereas an excited state is any state in which they are at an energy greater than the system's ground state.
Thus option A is correct.
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The electron configurations [tex]\rm 1s^2\ 2s^2\ 3p^1[/tex], [tex]\rm 1s^2\ 2s^2\ 2p^4\ 3s^1[/tex], and [tex]\rm [Ar] 4s^2\ 3d^5\ 4p^1[/tex]
corresponds to excited states whereas [tex]1s^2\ 2s^2\ 3p^6[/tex] corresponds to ground state. The correct answer is option 2.
The electron configuration of an atom describes how its electrons are distributed among the various energy levels and orbitals.
The electron configuration [tex]\rm 1s^2\ 2s^2\ 3p^1[/tex] corresponds to an excited state. This configuration indicates that one of the electrons in the 2p orbital has been excited to a higher energy level.The electron configuration [tex]1s^2\ 2s^2\ 3p^6[/tex] is the ground state configuration of the noble gas argon (Ar).The electron configuration [tex]\rm 1s^2\ 2s^2\ 2p^4\ 3s^1[/tex]corresponds to an excited state. This configuration indicates that one of the electrons in the 3s orbital has been excited to a higher energy level.The electron configuration [tex]\rm [Ar] 4s^2\ 3d^5\ 4p^1[/tex]corresponds to an excited state. This configuration indicates that one of the electrons in the 4p orbital has been excited to a higher energy level.Therefore, the electron configurations [tex]\rm 1s^2\ 2s^2\ 3p^1[/tex], [tex]\rm 1s^2\ 2s^2\ 2p^4\ 3s^1[/tex], and [tex]\rm [Ar] 4s^2\ 3d^5\ 4p^1[/tex]correspond to excited states, while the electron configuration [tex]1s^2\ 2s^2\ 3p^6[/tex] is the ground state configuration of argon. Option 2 is the correct answer.
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What unit is mass generally measured in
Answer:
kilograms
Explanation:
hope this helps, pls mark brainliest :D
Answer:kilogram
Explanation:
I got the smarts
chemical formula for tin iv carbide
Answer:
Explanation:
Sn(WC)2
if it is tungsten carbide this should be correct but there are many versions of carbide
Sn(MC2)2
could also be possible
the 2 next to MC should be a subscript
A plant that has both male and female reproductive structures is able to.
A plant that has both male and female reproductive structures can self pollinate.
What is pollination?Pollination is the process in which pollen grains are being transferred from the male anther of a flower to the stigma of a female flower. Two forms of pollination include:-
Cross-pollination:- Pollen grains are transmitted from the stamen of one flower to the stigma of a flower on another plant of the same species in cross-pollination.
Self-pollination:- The process of transferring the pollen grains from the anther to the stigma of the same flower or the stigma of a flower on the same plant is called self-pollination.
Pollination by insects is called entomophily and pollination by birds is called ornithophily. Pollination by vertebrates is known as zoophily. Abiotic agents – Wind and water. Wind pollination is known as anemophily and pollination by water is called hydrophily.
Therefore, A plant that has both male and female reproductive structures can self pollinate.
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3 A student investigates how the concentration of an acid affects the speed of reaction with a 0.5
D filtration
mass of magnesium at 30°C.
The student has a beaker, concentrated acid, water and the apparatus below.
P a balance
Qa dock
R a measuring cylinder
S a thermometer
Which pieces of apparatus does the student use?
A P, Q and R only
B P, Q and S only
C Q, R and S only
DP, Q, R and S
Answer:
C Q, R and S only.
Thermometer: for measuring temperature.
Measuring cylinder: for measuring accurate volume used in standardization during determination of concentration.
dock: for holding solutions
What kind of material will reduce the flow of heat energy?
What type of chemical reaction is: CH4 + 202® CO2 + 2 H2O
Answer:
Incomplete combustion - carbon monoxide and water.
Explanation:
Which of the following is composed mostly of ice?
Asteroids
Gaseous planets
Comets
Meteorites
Stars
Answer: The answer is C- comets!
Explanation: Callisto is composed mainly of rock and water ice, although other ices like ammonia ice and carbon dioxide ice may be present. Water ice occurs at the surface of Callisto so it would be comets.
two answer multiple choice-- please help!
Study the reaction.
NH4+ + NO2– ⟶ N2 + 2H2O
The rate of this reaction is proportional to the concentration of ammonium (NH4+) and the concentration of nitrogen dioxide (NO2–).
What is the rate law of this reaction?
Rate = K[NH4+][NO2–]
Rate = K[N2][H2O] ^2
Answer:
Rate = K[NH₄⁺][NO₂⁻]
Explanation:
In kinetics studies of reaction, rate law is a mathematical expression that relates speed of reaction with concentrations of the reactants. For a reaction:
aA + nN → cC + dD
The rate law is expressed in terms of [A] and [B] as follows:
Rate = K[A]ᵃ[N]ⁿ
Where K is rate constant.
For the reaction:
NH4+ + NO2– ⟶ N2 + 2H2O
The rate law is:
Rate = K[NH₄⁺][NO₂⁻]As was said in the problem, the rate is porportional to [NH₄⁺] and to [NO₂⁻]
The atomic symbol represents the _____ of the element.
Protons
Explanation: the atomic number is the same as the number of protons
what is the mass of
22.4 litres of ammonia
Answer:
17g
Explanation:
Using the relation :
Volume = mass / molar mass
Volume of ammonia = 22.4 litres
Mole of gas at stp :
1 M of NH3 = 22.4 litres
Chemical formula for ammonia = NH3
The molar mass :
NH3 =14 + (1*3) = 14 + 3 = 17
Volume of ammonia = 1 M
Mass = volume * molar mass
Mass = 1 * 17
Mass = 17g
Help ASAP give brainest if right And please hurry
Answer:
Conduction
Convention
Radiation
in that order
Answer:
Conduction
Convention
Radiation
Explanation:
All atoms are positively charged, with the number of protons exceeding the number of electrons. negatively charged, with the number of electrons exceeding the number of protons. neutral, with the number of protons equaling the number of electrons.
Answer:
Yah, it's true.
because protons are represented as helium (²4He) which are positive.
electrons are represented as 0-1e which is negative
An ion of calcium has a charge of 2+. The ion contains 18 electrons. How many protons does a neutral atom of calcium possess?
18
20
36
2
2
Answer:
Explanation:
The ion and the neutral atom both contain 20 protons. Generally the protons stay in the nucleus forever.
Which change will decrease the electric force between two positively charged objects? moving them closer together moving them farther apart adding neutrons removing electrons
Answer:
Moving them farther apart
Explanation:
One can try to change the distance between the two positive charges in such a way that it increases the distance and decreased the electric force.
Answer:
moving them farther apart
Explanation:
aka B.
If you may, I don't know how to graph. Thanks~
Answer: you should use the platform desmos to help you if you put in all the information it will give you the graph then you can just copy it on to your graph.
Explanation:
What actions can you take to reduce your impact on society?
Answer:
Cut Down On Waste. One of the simplest ways you can reduce your impact on the planet is by cutting down on waste. ...
Support Sustainable Companies. ...
Limit Your Meat Intake. ...
Reduce Energy and Water Use. ...
Offset Your Carbon Emissions. ...
Re-purpose, Recycle, and Borrow.
Explanation:
Plz mark brainliest thanks
350 coulombs of charge flows through an iron in 70 seconds. What is the current flowing through the iron