Answer:
ANIMAL CELL
Animal cells are generally small in size.
They don't have a cell wall
Except the protozoan Euglena, no animal cell possesses plastids.
Vacuoles in animal cells are many, small and temporary.
Animal cells have a single highly complex and prominent Golgi apparatus.
Animal cells have centrosome and centrioles.
PLANT CELL
Plant cells are larger than animal cells.
The plasma membrane of plant cells is surrounded by a rigid cell wall of cellulose.
They have Plastids
Most mature plant cells have a permanent and large central sap vacuole.
Plant cells have many simpler units of Golgi apparatus, called dictyosomes.
Plant cells lack centrosome and centrioles.
Hope this helps!
Answer: Differences between animal and plant cells :
Animal cell :- Animal cells are generally small in size. Cell wall is absent. Except the protozoan Euglena, no animal cell possesses plastids. Vacuoles in animal cells are many, small and temporary. Animal cells have a single highly complex and prominent Golgi apparatus. Animal cells have centrosome and centrioles. Plant cell :- Plant cells are larger than animal cells. The plasma membrane of plant cells is surrounded by a rigid cell wall of cellulose. Plastids are present. Most mature plant cells have a permanent and large central sap vacuole. Plant cells have many simpler units of Golgi apparatus, called dictyosomes. Plant cells lack centrosome and centrioles.
Explanation:
Pedro is heating sugar to make caramel for an investigation. As the sugar is heating, he is looking for evidence of a chemical change. Select the observation that Pedro made about the chemical change.
Answer:
The sugar atoms formed new atoms after caramelization.
Explanation:
When sugar is heated to a certain temperature, it becomes caramel. Te formation of caramel from the sugar is a chemical process.
In the context, Pedro is doing an investigation by heating sugar to make caramel. Burning of the sugar crystal is a chemical change as different chemicals are present in both. The caramel formed cannot be revered back to sugar crystal, this also proves the chemical change of caramelization of sugar cubes. Sugar consists of carbon, oxygen and hydrogen atoms. It reacts with atmospheric oxygen atoms to form new groups of atoms and forms caramel.
i will give brainliest
Which statement best describes the direction of force shown by the magnetic
field lines around a bar magnet?
A. Away from both the magnet's north and south poles
B. Toward both the magnet's north and south poles
C. From the magnet's north pole to its south pole
D. From the magnet's south pole to its north pole
Answer:
I believe the amswer is a hope this helps
Answer:
c
Explanation:
hope you can redo it to get it right
1. Does elevation play a factor? If so, can the elevation be changed to protect the homes? 2. Could the residents build a structure that would prevent a tsunami from reaching the community? What would this structure look like? How would the residents build it? 3. What could limit the erosion of the beach?
Answer:
Yes.
Explanation:
Yes, elevation play a great role and has the ability to protect homes from natural disasters such as flood and tsunami etc. The residents build a hard structure of wall along the beach that would prevent a tsunami from reaching the community and also built homes at higher elevation. The residence built it with the help of government and this wall is also effective in reducing the erosion of the beach.
Answer:
1. Yes elevation does play a factor if the house was higher i feel like it wouldnt get as damaged
2. Yes they could build a high enough wall that it would take most of the impact away from the houses, you would build it with the thickest peice of wood that you could find and use long screws and cement the wood into the ground.
3. The wall will also help from erosion
Explanation: i got it right on my project.
find the mass of electron
Answer: mass of electron is
9.10938356 × 10^-31 kilograms
Explanation:
As the amplitude decreases in a wave, the energy increases.
Lesson 4.07
Question 6 options:
True
False
Answer:
False
Explanation:
The relationship between energy and amplitude can be written as eαa^2
This means that the energy of a wave is directly proportional to the square of the amplitude.
Need help fast please!
Find the mass of 4.56 mols of LaPO4
Answer:
Mass = 1080.26 g
Explanation:
Given data:
Number of moles of LaPO₄ = 4.56mol
Mass in gram = ?
Solution:
Formula:
Number of moles = mass/molar mass
Molar mass of LaPO₄ = 236.9 g/mol
by putting values,
4.56 mol = mass/ 236.9 g/mol
Mass = 4.56 mol × 236.9 g/mol
Mass = 1080.26 g
How many valence electrons does Florine have?
O 5
O 7
3
9
Answer:
When forming ions, elements typically gain or lose the minimum number of electrons necessary to achieve a full octet. For example, fluorine has seven valence electrons, so it is most likely to gain one electron to form an ion with a 1- charge
Explanation:
Answer:
7
Explanation:
a-P-e-X
4 gramos de cafe soluble, 20 gramos de azucar y agua hasta completar 200 ml, Calcula la concentración (%m/v) de todas las sustancias que forman el refresco
Answer:
2 % de cafe, 20% de azucar, 100% de agua.
Explanation:
Un clásico problema de soluciones:
- Nuestros solutos son 4 g de cafe y 20 g de azúcar.
- en 200 mL de agua
Podemos asumir que los 200mL es el volumen de solución.
%m/v es un tipo de concentración que señala los gramos de soluto en 100 mL de solución.
% m/v de cafe → (4/200) . 100 = 2 %
% m/v de azucar → (20/200) . 100 = 20 %
Si tomamos al agua como sustancia que forma parte de la solución sería
(200/200) . 100 = 100 %
Lo que podríamos leer 100 g de agua en 100 mL de agua, dado que la densidad del agua es 1 g/mL
Which of the following have metallic bonding? 1. Magnesium chloride 2. Hydrogen chloride. 3. Magnesium. 4. Chlorine
Explanation:
Magnesium chloride has Ionic bonding.
Hydrogen chloride has Covalent bonding.
Chlorine has Covalent bonding.
Only Magnesium has metallic bonding (3).
A nuclear reaction in which the nuclei of atoms join together is called nuclear fission.
true or false
Answer:
That is true!
Explanation:
a)Calculate the mass of NaNO3 that heated strongly and produced 4.5 dm3(cubic decimeter) of O2 gas.
The chemical equation for a chemical reaction is given below (2)
2NaNO3 ---> 2NaNO2 +O2
b) Calculate the concentration of HCl solution formed by dissolving 200 g HCl in 300 CM3 of water.(2)
Answer:
a) 34 g
b) 18.33 moldm^-3
Explanation:
a) The equation of the reaction is;
2NaNO3----------> 2NaNO2 + O2
Let us recall that 1 mole of a gas occupies 22.4 dm^3. Since 1 mole of O2 is produced in the reaction, we can write;
2 moles of NaNO3 yields 22.4 dm^3 of O2
x moles of O2 yields 4.5 dm^3 of O2
x = 2 * 4.5/22.4
x = 0.4 moles of NaNO3
But number of moles = mass/molar mass
molar mass of NaNO3 = 85 g/mol
Mass of NaNO3 = 0.4 moles * 85 g/mol
Mass of NaNO3 = 34 g
b)
Number of moles in 200g of HCl = mass/molar mass
molar mass of HCl = 36.5 g/mol
Number of moles = 200g/36.5 = 5.5 moles
From;
Number of moles = concentration * volume in dm^3
concentration = Number of moles/ volume in dm^3
But volume = 300 cm^3 or 0.3 dm^3
concentration = 5.5/0.3 = 18.33 moldm^-3
Paper for my last question
Please help I’m desperate giving 50 points and brainliest
Answer:
check explaination
Explanation:
Q. 4:
a) 7 ml
b) 9 ml
c) volume of rock = volume of column (with rock in it) - volume of column (without rock)
= 9-7
= 2 ml
d) density = mass ÷ volume
therefore, mass = volume × density
= 2 × 3 => 6 g
Q. 5:
1st has the highest density
this is because, density = mass ÷ volume
as volume is constant , density is directly proportional to mass
as image 1 has more number of molecules, it's mass will be maximum.
therefore, 1st image will have maximum density
calculate the mass in gram of binormal solution in NAOH
Answer:
80 grams
Explanation:
Normality is one of the units of concentration and it is derived by dividing the gram or mole equivalent of the solute in a solution by the volume (in liters) of the solution.
The equivalent weight of NaOH is derived by dividing the molecular weight of the compound by 1. Hence, the equivalent weight of NaOH in 1 normal solution is 40/1 = 40 g.
If 1 normal NaOH solution contains 40 g of NaOH in 1 liter of the solution, then a binormal (2 normal) solution of NaOH would contain;
2 x 40 = 80 g of NaOH.
pls help me with science
What is the electron configuration for zirconlum?
Answer:
1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^2 4d^2
Explanation:
Can a larger, cooler object have more TOTAL kinetic energy than a smaller, warmer object?
Answer:Hotter objects have a higher average kinetic energy and a higher temperature ; cooler objects have a lower average kinetic energy and a lower temperature.
Explanation:
which model best shows the movement of oxygen during photosynthesis
A jeweler heated a sample of silver from 22.0°C to 46.0°C. The specific heat of silver is
0.235 J/gºC. If the silver absorbed 26.0 J of heat, what is the mass of the silver?
please help me!
The mass of the silver : 4.6 g
Further explanationHeat can be calculated using the formula:
Q = mc∆T
Q = heat, J
m = mass, g
c = specific heat, joules / g ° C
∆T = temperature difference, ° C / K
∆T = temperature difference :
[tex]\tt 46-22=24^oC[/tex]
The specific heat of silver is 0.235 J/gºC
Q = heat = 26 J
The mass :
[tex]\tt mass(m)=\dfrac{Q}{c.\Delta T}\\\\m=\dfrac{26}{0.235\times 24}\\\\m=4.6~g[/tex]
PLEASE HELP!!!! 60 points
Answer:
Have a nice Day , I would appreciate it if you could mark my answer brainliest
if 1 teacher cant teach all subjects how come 1 student can learn all subjects ?
Answer:
d
d.d.d.d.d.d..d.d.d.d.d.d.d.d..d.d.d.d.d.d.d
Explanation:
A person who is recessive for eye color is crossed with a person who is also recessive for eye color.
What is the probability of them having a child who is dominant for eye color?
0%
0%
25%
25%
50%
50%
75%
75%
100%
How do unbalanced forces cause a change in speed, direction, and position of an object?
Answer:
But its motion is not changing. This is because the forces acting on it from opposite sides are exactly the same size. An unbalanced force can change an object's motion. ... An unbalanced force acting on a moving object could make the object change direction, change speed, or stop moving.
The unbalanced forces are unequal in magnitude. They change the state of motion of the object. The pushing or pulling of an object can generate unbalanced forces and cause change in the direction, and position of an object.
What is an unbalanced force?The two forces of unequal magnitudes and they act on an object simultaneously such that the net force is not zero are defined as the unbalanced forces. The body acted upon by the unbalanced forces changes its state of motion.
The unbalanced forces are the opposite of a balanced force. An unbalanced force causes a change in motion, speed, direction, or movements. Because of unequal force or strength which is applied to one side of an object.
In the case of unbalanced forces, one side has more energy than the other. Opposite sides have forces acting against them.
Thus the unbalanced forces are out of balance and are not equal, it causes body's position to change.
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Fission U235 can produce what?
A Krypton
B Strontium
C Barium
D Xeonon
E All of the above
Answer:
A. krypton
Explanation:
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Which phrase justifies why the theory of evolution is a theory and not a law?
1. Describes the relationship between an organism and its environment
2. Makes accurate predictions based on only a small amount of empirical evidence
3. Explains diversity based on the principle of natural selection
4. Cannot be modified with the discovery of new evidence
Answer:
2. Makes accurate predictions based on only a small amount of empirical evidence
Explanation:
For a phrase or scientific finding to be considered a law, there has to be clear evidence and facts to support that specific finding. In the case of the evolution theory, the evidence is not clear enough to make it a law
Answer:
2. Makes accurate predictions based on only a small amount of empirical evidence
Explanation:
Help with this question
Answer:
So the number of protons equals the number of electrons.
Explanation:
Ionic bond, also called an electrovalent bond, type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound. Such a bond forms when the valence (outermost) electrons of one atom are transferred permanently to another atom.
A species of kangaroo has a diploid chromosome number of 16. After meiosis, to develop the kangaroo’s sperm or egg, the haploid number would be
. When fertilization occurs, the zygote would again have 16 chromosomes.
Answer:
Just to prove that the persons answer on top of mine is correct :D
Explanation:
Answer:
Explanation:
8
how many protons neutrons and electrons does Francium have?
Question 2
How does an object become negatively charged
Answer:
It gains electrons.
Explanation:
Got it right on a quiz.
When electrons are added to or taken away from an object, an electrical charge is produced. An object acquires a negative charge when electrons are introduced to it because electrons have a negative charge. An object acquires a positive charge when its electrons are removed.
When a thing picks up electrons, it becomes negatively charged. Non-metals gain electrons at the atomic level to fill their outer electron orbitals. An atom that is negatively charged and has more electrons than protons is said to be an anion.
Some atoms have the ability to draw in more electrons, making them negatively charged. Ions are defined as atoms that are not electrically neutral.
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What elements does lithium resemble when it loses 1 electron?
Answer:
helium
Explanation:
By losing an electron, they look like the noble gas that immediately precedes them on the periodic table.
What is another name for the galvanic cell?
O A. The voltaic cell
O B. The salt bridge
O C. The potential cell
O D. The redox cell
Answer:
The Voltaic Cell
Explanation:
Answer: A
Explanation: i just took the test :)
What is the name of this atom's model that is commonly used by
Chemistry students to show the basic structure of an atom?
"Plum Pudding model" by JJ Thomson
"Bohr's Model" by Neils Bohr
"Rutherford's Model" by Ernest Rutheforf
Answer:
It is the "Bhor's Model"
Explanation:
Nearly two-thirds of the students ranked the electron cloud and Bohr-model as their two most preferred representations. Students invoked ideas from classical mechanics to interpret the electron cloud model and used probabilistic language to describe the Bohr model of the atom.
