Answer:
the divide through osmosis of mitosis or sum
Explanation:
Answer:
In multicellular organisms, cell division aids in the formation of gametes, which are cells that combine with others to form sexually produced offspring. For growth to occur in living organisms, the number of cells have to increase through cell division until it reaches its maximum size. The human body also repairs injuries by means of cell division.
I hope this answer helps you find your answer! Have a great day! :)
What is the process of separating liquids by boiling points?
Answer:
Fractional distillation (often shortened in high school to just distillation)
Explanation:
Some elements have different boiling points and can be separated by boiling one element out and condensing it. This is how sodium acetate is made, for example.
Hope this helped!
What is the general formula for a secondary anime?
A. RNH2
B.H2NRNH2
C.RN2H
D.R2NH
Answer:
D.R2NH
Explanation:
The general formula of a secondary amine is given as:
R2NH
Amines are organic compounds that show an appreciable basicity. They are regarded as the derivatives of ammonia where one or two of the three hydrogen atoms has/have been replaced by the alkyl or aryl groups.
In a secondary amine, two hydrogen atoms of ammonia have been replaced by alkyl and or aryl groups.
Answer:
d. R2NH
Explanation:
edge 2021
how can you describe energy? ( make it understandable )
In a given column of the periodic table the elements have _____.
a. similar properties
b. sequential atomic numbers
c. similar atomic masses
d. the same densities
Answer:
a. similar properties
Explanation:
In a given column of the periodic table, the elements have similar properties.
A column on the periodic table is known as a group or family. The group is a vertical arrangement of elements on the periodic table.
Elements in the same group have the same number of valence electrons after their group number.
For example, all the elements in group 1 have one valence electron. Those in group 2 have 2 valence electrons.
The valence electrons of an atom determines its chemical properties. So, all elements in the same group have the same chemical properties.
Answer: similar properties
Explanation:
Can someone please help me !!
5 meters= 0.005
3 grams= 300millgrams
7 meters= 700 cm
60 milligrams=6e-5
2.5 meters=2500
4.5 centimeter= 4.5e-5km
Scientist use alternative ways to seek out if a fault is active which one isn't include
Answer:
Geologists commonly consider faults to be active if there has been movement observed or evidence of seismic activity during the last 10,000 years. Active faulting is considered to be a geologic hazard - one related to earthquakes as a cause.
Explanation:
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An atom contains 8 protons, 8 neutrons and 10 electrons. A second atom
contains 9 protons, 10 neutrons and 10 electrons. What can be said about
these two atoms?
A. Both atoms are neutral
B. The atoms are isotopes of each other
C. Both atoms are ions
D. these atoms cannot exist in nature
Answer:
both atoms are ions
Explanation:
which of the following is an example of a longitudinal wave
Answer:
Examples of longitudinal waves include: sound waves. ultrasound waves. seismic P-waves.
Explanation:
A rectangle has a volume of 395cm3. It has a mass of 147g. What is its density? *
The density of a rectangle : ρ = 0.372 g/cm³
Further explanationGiven
The volume of rectangle : 395 cm³
Mass : 147 g
Required
The density
Solution
Density is a quantity derived from the mass and volume
Density is the ratio of mass per unit volume
Density formula:
[tex]\large {\boxed {\bold {\rho ~ = ~ \frac {m} {V}}}}[/tex]
ρ = density
m = mass
v = volume
Input the value :
ρ = 147 g : 395 cm³
ρ = 0.372 g/cm³
2. Calculate the mass of Al(SO), in 250 mL of solution if the concentration
is 0.48 N.
Answer:
s
Explanation:
Solving and balancing chemical equations
When 29 grams of sodium metal (Na) react with 49 grams of chlorine gas (C1), solid
sodium chloride (NaCl) is created in synthesis reaction. How much excess sodium OR
chlorine is left over?
Answer:
Explanation:
Na + Cl = NaCl
23 g 35.5 g
23 g sodium reacts with 35.5 g of chlorine
29 g of sodium reacts with 35.5 x 29 / 23 g of chlorine
= 44.76 g
So 44.76 g of chlorine reacts and 49 - 44.76 = 4.24 g of chlorine is left over .
All the sodium is used up in the reaction .
A delivery truck hits a parked car from behind. The mass of the car is 2550 kg. What force is exerted on the car if (a) the car is rigid and accelerates to 4.5 m/s in 0.20 s? (b) the car has crumple zones and accelerates to 4.5 m/s in 0.30 s?
Helpp meee........TT
Explanation:
Given parameters:
Mass of the car = 2550kg
Initial velocity = 0m/s
Solution:
First problem is to find the force exerted on the car;
Velocity = 4.5m/s
Time = 0.2s
Acceleration = [tex]\frac{final velocity - initial velocity }{time}[/tex] = [tex]\frac{4.5 - 0}{0.2}[/tex] = 22.5m/s²
Force = mass x acceleration = 2550 x 22.5 = 57375N
B. Force on the car with crumple zones
Acceleration = [tex]\frac{final velocity - initial velocity }{time}[/tex] = [tex]\frac{4.5 - 0}{0.3}[/tex] = 15m/s²
Force = 2550 x 15 = 38250N
a. The force when the car is rigid and accelerated is 57375N.
b. The force where the car should have crumple zones should be 38250N
Calculation of the force:
Since Mass of the car = 2550kg
Initial velocity = 0m/s
Here,
Velocity = 4.5m/s
Time = 0.2s
a.
Here force = mass * acceleration
= 2550 * (4.5 - 0/0.2)
= 2550 * 22.5
= 57375 N
b.
Here force is
= mass * acceleration
= 2550 * (4.5 - 0/0.3)
= 2550 * 15
= 38250 N
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How many grams are equal to 413 kg in scientific notation
Answer:
[tex]4.13[/tex] x [tex]10^{2}[/tex] = 413 kg
Explanation:
4.13 x 10 = 41.3 then we multiply 41.3 by 10 agian = 41.3 x 10 = 413
so, we multiplied ten two times that = [tex]10^{2}[/tex]
= 4.13 x [tex]10^{2}[/tex]= 413 kg
Given that 1 kilogram = 1000grams, the value of 413 kilograms in grams, using scientific notation is 4.13 × 10⁵g.
How many grams are equal to 413 kg in scientific notation?Note that;
1 kilogram = 1000grams
Given that;
Mass in kilograms = 413kgMass in grams = ?Since, 1 kilogram = 1000grams
413 kilograms = ( 413 × 1000 )grams
413 kilograms = ( 413000 )grams
413 kilograms = 4.13 × 10⁵ g
Given that 1 kilogram = 1000grams, the value of 413 kilograms in grams, using scientific notation is 4.13 × 10⁵g.
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help me with this science question for brainiest:)
Answer:
solid liquid and gas
Explanation:
Answer: Forms: Liquid water, solid water (ice) and gaseous water (water vapor)
Explanation:
Obviously liquid water comes from the sink, ice can be found in the freezer, and water vapor comes from boiling water, it is always in the air around us.
Liquid water is used for hydration or for food preparation. Ice is used to cool things down or in drinks, and water vapor isn't really used by humans. Rather, it serves as a natural greenhouse gas.
What is the molar mass of Sn(CO3)2?
Answer:
The molar mass and molecular weight of Sn(CO3)2 is 238.728.
Explanation:
Molar mass of any molecule can be calculated by adding mass of all individual atoms that comprises the compound. The Molar mass of [tex]Sn(CO_{3})_{2}[/tex] is 238.72g/mol.
What is molar mass?Molar mass is defined as mass of one mole of a molecule or compound. It's SI unit is g/mole. The other term that is used for molar mass is molecular weight, formula unit mass. Molar mass is extensive property as it depends on the mass of individual atoms that constitutes the molecule.
Mass of tin= 118.71 g.mol
Mass of Carbon=12g/mol
mass of Oxygen= 16g/mole
Molar mass of [tex]Sn(CO_{3})_{2}[/tex] = 1×mass of tin+2×mass of carbon+6×mass of oxygen
substituting all the values we get
Molar mass of [tex]Sn(CO_{3})_{2}[/tex] = 1×118.71+2×12g/mol+6× 16g/mole
Molar mass of [tex]Sn(CO_{3})_{2}[/tex] =118.71 +24+66
Molar mass of [tex]Sn(CO_{3})_{2}[/tex]=238.72g/mol
Therefore the Molar mass of [tex]Sn(CO_{3})_{2}[/tex] is 238.72g/mol
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Is oatmeal cookie an element compound or mixture
Answer:
oatmeal with raisins is a heterogeneous mixture. The raisins may be solid, but turn the bowl over and you will see the mixture as a whole most definitely acts like a liquid. Mud puddles are a heterogeneous mixture.
Explanation:
Answer:
An oatmeal cookie is a heterogeneous mixture, which contains multiple distinct components
How are subduction zones related to megathrust earthquakes
Answer:
Subduction zone megathrust faults host Earth’s largest earthquakes, along with multitudes of smaller events that contribute to plate convergence. An understanding of the faulting behavior of megathrusts is central to seismic and tsunami hazard assessment around subduction zone margins. Cumulative sliding displacement across each megathrust, which extends from the trench to the downdip transition to interplate ductile deformation, is accommodated by a combination of rapid stick-slip earthquakes, episodic slow-slip events, and quasi-static creep. Megathrust faults have heterogeneous frictional properties that contribute to earthquake diversity, which is considered here in terms of regional variations in maximum recorded magnitudes, Gutenberg-Richter b values, earthquake productivity, and cumulative seismic moment depth distributions for the major subduction zones. Great earthquakes on megathrusts occur in irregular cycles of interseismic strain accumulation, foreshock activity, main-shock rupture, postseismic slip, viscoelastic relaxation, and fault healing, with all stages now being captured by geophysical monitoring. Observations of depth-dependent radiation characteristics, large earthquake slip distributions, variations in rupture velocities, radiated energy and stress drop, and relationships to aftershock distributions and afterslip are discussed. Seismic sequences for very large events have some degree of regularity within subduction zone segments, but this can be complicated by supercycles of intermittent huge ruptures that traverse segment boundaries. Factors influencing variability of large megathrust ruptures, such as large-scale plate structure and kinematics, presence of sediments and fluids, lower-plate bathymetric roughness, and upper-plate structure, are discussed. The diversity of megathrust failure processes presents a suite of natural hazards, including earthquake shaking, submarine slumping, and tsunami generation. Improved monitoring of the offshore environment is needed to better quantify and mitigate the threats posed by megathrust earthquakes globally.
Explanation:
The effect on temperature on The rate of the reaction between marble chips hydraulic acid can be investigated by measuring The production of carbon dioxide
is it a b c or d
Answer:
D. Thermometer
Explanation:
The equipment used to measure the temperature of any reaction is the thermometer.
A thermometer is any device that has been specifically calibrated to measure the temperature values of reaction.
Temperature is the degree of hotness or coldness of a body. Cold bodies have very low temperature. Hot bodies have high temperatures. There are different types of thermometers in use for various purposes.Can you seperate Oxygen molecules from Hydrogen in water?
How are chemical reactions used in art
Answer:
Chemistry reactions are used in art for the following processes;
1) Analog photography
The photographic paper used in analog photography react when exposed to light such that the image on the film stains the photopaper
A series of chemicals are further used to develop the images now carried on the paper and water is used to rinse of the chemicals after the other chemical processes are complete
The photopaper, now bearing the developed photo is hung for it to be dried
2) Paint used for painting consists of several chemicals, including, minerals that serve as pigment, oils that serve as carrying agent, a thinner to prevent the paint from turning to solid
An artist therefore combines different chemicals for a given paint task
3) In the sculpting process
An original sculpture is produced by the artist with the aid of clay or plaster, from the original sculpture, on which wax coatings and chemicals are used to make a replica mold.
Copies of the sculpture can then be made by pouring material into the mold
Explanation:
covalent bonds always share electrons equally
A: True
B: False
I hope this helped! +*♡
Which pair of elements are in the same period on the periodic table?
А
Lithium & Sodium
B
Hydrogen & Potassium
C
Boron & Silicon
D
Sulfur & Argon
Explain why noble gases cannot participate in ionic bond formation.
Explanation:
Noble gases are odorless, colorless, nonflammable, and monotonic gases that have low chemical reactivity. The full valence electron shells of these atoms make noble gases extremely stable and unlikely to form chemical bonds because they have little tendency to gain or lose electrons. So, noble gases cannot participate in ionic bond formation.
Answer:
Because they can't!
Explanation:
For ionic bonds, ions are needed to be made which are made to form a stable outer shell octet of electrons of each atom to gain atomic stability. The noble gases don't need to form ions since they already have the octet of electrons in their outer shells. If they don't form ions, they don't form ionic bonds too.
This is one of the reasons why noble gases are unreactive.
#giveathanks
You have a 0.7 M solution. Your job is to produce 50 mL of a 0.4 M solution.
A. How much of the 0.7 M solution do you need to start with? (Show your work.)
B. How many moles of solute were in the 0.7 M solution? (Show your work.)
C. How much water do you need to add to the previous amount of the 0.7 M solution to dilute it to
0.4 M? (Show your work.)
D. A student decides to put double the amount of water calculated in Part C. Describe what effect this
will have on the overall concentration of the resulting solution. Justify your answer.
Answer: A. 28.6 ml of the 0.7 M solution we need to start with.
B. There are 0.02 moles of solute were in the 0.7 M solution.
C. Amount of water to be added is 21.4 ml
D. The resulting solution will have concentration of 0.28 M
Explanation:
According to the dilution law,
[tex]M_1V_1=M_2V_2[/tex]
where,
[tex]M_1[/tex] = molarity of stock solution = 0.7 M
[tex]V_1[/tex] = volume of stock solution = ?
[tex]M_1[/tex] = molarity of diluted solution = 0.4 M
[tex]V_1[/tex] = volume of diluted solution = 50 ml
Putting in the values we get:
[tex]0.7\times V_1=0.4\times 50[/tex]
[tex]V_1=28.6ml[/tex]
A. 28.6 ml of the 0.7 M solution we need to start with.
B. Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.
[tex]Molarity=\frac{n\times 1000}{V_s}[/tex]
where,
n = moles of solute
[tex]V_s[/tex] = volume of solution in ml
[tex]0.7=\frac{n\times 1000}{28.6}[/tex]
[tex]n=0.02[/tex]
Thus there are 0.02 moles of solute were in the 0.7 M solution.
C. Amount of water to be added = (50-28.6 ) ml = 21.4 ml
D. If water added is [tex]2\times 21.4=42.8 ml[/tex]
[tex]0.7\times 28.6=M_2\times 71.4[/tex]
[tex]M_2=0.28M[/tex]
If volume of concentrated solution will be more , the resulting solution will have lesser concentration of 0.28 M
For the cold pack shown below, the temperature on the outside surface has dropped considerably from its initial temperature of 25 °C. Which of the following provides the best explanation for this temperature decrease?
Answer:
The correct answer is D
Explanation:
In an endothermic process, energy travels from the surroundings into the system. The decrease in the temperature on the outside of the bag indicates that energy has moved from the surroundings into the system.
The other answers are incorrect. A bag cannot release “cold” into the surroundings since cold refers to the absence of heat. The surroundings become colder when heat is removed. Option B is incorrect because the cooling is due to the cold pack absorbing heat energy from its surroundings. Option C is incorrect because a cold pack absorbs heat energy from the surroundings, not vice versa.
The surroundings are losing energy and the thermometer is measuring the temperature of the surroundings as the cold pack shows an endothermic process. Therefore, Option (D) is correct.
What is an endothermic reaction?Endothermic reactions are those in which the reactants absorb heat energy from their surroundings to form products. Endothermic reactions reduce the temperature of their surroundings and create a cooling effect. Physical processes can be endothermic in nature as well, for example, ice cubes absorb heat from their surroundings to form liquid water.
Endothermic reactions include the making of chemical bonds through the absorption of energy from the surroundings. On the other hand, exothermic reactions are in which the liberation of heat energy is generated from bond breakage.
The temperature of the cold pack is lower than the temperature of the surroundings. So the heat energy will be traveled from the surroundings to the cold pack.
Therefore, the temperature of the surroundings will fall as heat transfers to the cold pack.
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A sample of gold has a volume of 2 cm3 and a mass of 38.6 grams. What is the density of this sample? HINT: Use the formula D=m/v
a student finishes an experiment and is left with three empty beakers that held liquids during the experiment .the best lab practice is to
Answer:
Rinse With distilled water
When I cut it a gas will irritate my eye. Sometimes when I'm cooking you might see me cry.
Answer:
Explanation:
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does anyone have the 2020 paper for chemistry
Answer:
Erm.......... can you clarify what "paper", you just said "paper" there's a lot.
Explanation:
