Cell division resulting in two new nuclei having the same number of chromosomes as the
original nucleus is called mitosis
why should bunsen burners not be used when heating organic materials?
Answer:
Many organic compounds are very flammable.
Explanation:
Because we do not want to inadvertently ignite chemicals and cause a fire or explosion. Most organic chemicals are incompatible with inorganic chemicals, and certain mixtures can cause violent reactions.
1 L, 1000 mL, and 1000 cm are considered to be
EQUIVALENT or NON EQUIVALENT UNITS.
Answer:
equivalent
Explanation:
hope it works
differentiate between nuclear charge and effective nuclear charge
hope it helps ..............
2. 31.5 g NH4Cl (s) is dissolved in 500. mL H20, initially at 23.0 °C. Determine the final
temperature of the resulting solution.
Answer:
the temp of nitrogen is the answer
help plss——————
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tác giả văn bản mẹ tôi là ai ?
Answer:
Tác giả văn bản ' Mẹ tôi ' : Edmondo De Amicis ( 1846-1908 ) là nhà văn người Ý ( I-ta-li-a )
A spiracle ball of lead has a diameter of 3.5 cm. What is the mass of the sphere if lead has a density of 11.34 g
Answer:
mass = volume x density
volume = πr²
since Diameter = 3.5 cm
then radius = 1.75cm
∴ volume = π x (1.75cm)³
≈ 16.8369731 cm³
Thus mass = 16.8369731 cm³ x 11.34 g / cm³
= 190.93 g
Which quantity determines how two atoms bond? (1 point)
O the difference in the number of valence electrons
o their total number of valence electrons
o the sum of their electronegativities
O the difference in their electronegativities
The quantity which determines how two atoms bond is; The difference in their electronegativities.
The electronegativity value of an element is a measure of its electron affinity. In essence, the electronegativity value of an element determines if the element is an electron donor or acceptor.Ultimately, the difference between the electronegativities of two atoms determines how the atoms bond.
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chemical properties of Carbon iv oxide
Explanation:
Carbon Dioxide is a colorless, odorless, incombustible gas resulting from the oxidation of carbon. Carbon dioxide appears as a colorless odorless gas at atmospheric temperatures and pressures. Heavier than air and may asphyxiate by the displacement of air.
Hạt tạo thành khí oxi có mấy nguyên tử oxi liên kết với nhau?
Answer:
hạt tạo thành khí oxi có 2 nguyên tử O liên kết vơi nhau ; kí hiệu là O₂
Explanation:
Aeration basins increase the rate of bacteria working to break down the organic matter in wastewater. True or False?
Answer:
it is true
Explanation:
Aeration basins increase the rate of bacteria working to break down the organic matter in wastewater is true.
What is aeration basins?Aeration basins is defined as the biomass consumes both oxygen and organic pollution, resulting in net microorganism growth and carbon dioxide release.
It can also be defined as the process of introducing air into wastewater in order to allow aerobic bio-degradation of pollutant components.
Aeration is frequently used to reduce the amount of carbon dioxide released by a treatment process.
It is the best methods for waste water treatment .
The main disadvantage of the aeration process is that too much oxygen is absorbed and the water becomes corrosive.
Thus, aeration basins increase the rate of bacteria working to break down the organic matter in wastewater is true.
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How does avogadro relate to Mole Day.
Answer:
How is Avogadro constant related to mole?
One mole of a substance is equal to 6.022 × 10²³ units of that substance (such as atoms, molecules, or ions). The number 6.022 × 10²³ is known as Avogadro's number or Avogadro's constant.
Explanation:
What pressure is required to achieve a CO2 concentration of 0.0620 mol L−1 at 20∘C?
Considering the definition of ideal gas law, a pressure of 1.5 atm is required to achieve a CO₂ concentration of 0.0620 mol L⁻¹ at 20°C.
An ideal gas is a theoretical gas that is considered to be composed of point particles that move randomly and do not interact with each other. Gases in general are ideal when they are at high temperatures and low pressures.
An ideal gas is characterized by three state variables: absolute pressure (P), volume (V), and absolute temperature (T). The relationship between them constitutes the ideal gas law, an equation that relates the three variables if the amount of substance, number of moles n, remains constant and where R is the molar constant of the gases:
P×V = n×R×T
So the pressure is calculated as:
[tex]P=\frac{n}{V}xRxT[/tex]
In this case, you know:
[tex]\frac{n}{V} = 0.0620 \frac{mol}{L}[/tex]R= 0.082 [tex]\frac{atmL}{molK}[/tex]T= 20 C= 293 KReplacing:
P=0.0620 [tex]\frac{mol}{L}[/tex]× 0.082 [tex]\frac{atmL}{molK}[/tex]× 293 K
Solving:
P= 1.489612 atm≅ 1.5 atm
Finally, a pressure of 1.5 atm is required to achieve a CO₂ concentration of 0.0620 mol L⁻¹ at 20°C.
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Which, if any, of the substances had resonance structures? How many resonance structures did each substance have?
SO2, NO2- and CO2 all have resonance structures among all the other species that were mentioned in the question.
The question is incomplete, the complete question is;
Which if any, of the substances had resonance structures? How many resonance structures did each substance have?
CCl4 ,H2O, CO2 ,H2O ,CH4 ,C2H4 ,CH2O ,CH3OH ,CH3NH2 ,NF3 ,[NH4]+ ,[NO2]- ,SO2 , OF2 ,H2S ,SF6 , ICl5
Resonance is an idea introduced by Linus Pauling to explain the bonding in compounds where a single Lewis structure can not fully account for the bonding in the molecule. In such compounds, no single Lewis structure satisfactorily explains all the properties of the molecule.
Among the options listed, the following molecules exhibit resonance;
SO2 (two resonance structures)NO2- (two resonance structures)CO2 (three resonance structure)Learn more: https://brainly.com/question/8483218
Which statement best describes the effect of radioactive decay on a nucleus?(1 point)
The resulting nucleus is more stable than the original nucleus. The nucleus must be of the same element as the original.
The resulting nucleus is more stable than the original nucleus. The nucleus can be of a different element than the original.
The resulting nucleus is less stable than the original nucleus. The nucleus can be of a different element than the original.
The resulting nucleus is less stable than the original nucleus. The nucleus must be of the same element as the original.
Which phrase best describes nuclear fusion?(1 point)
a series of reactions in which particles from one reaction trigger the next reaction
the process by which small nuclei combine into a larger nucleus
the spontaneous emission of radiation from an unstable nucleus
the process by which a large nucleus is divided into smaller nuclei
Plss help
thx
Answer: There you go.
Explanation:
These types of decay involve the nuclear capture of electrons or emission of electrons or positrons, and thus acts to move a nucleus toward the ratio of neutrons to protons that has the least energy for a given total number of nucleons. This consequently produces a more stable (lower energy) nucleus.
When radioactive decay occurs, the original nucleus splits into daughter nuclei and the resulting nucleus is more stable than the original nucleus. The nucleus can be of a different element than the original.
Unstable nuclei often undergo radioactive decay. In a radioactive decay, the unstable nucleus is broken up into other nuclei. Usually, the nuclei formed during radioactive decay are smaller in mass compared to the original nucleus.
Also, the resulting nucleus is more stable than the original nucleus. The nucleus can be of a different element than the original.
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2. Why do researchers need a lot of data to monitor a species population? What trends can
you see in the data that you would have missed otherwise?
Science
To study the population of a species we have to collect many data regarding the factors affecting the growth of the species and those which adversely affects their survival.
What is population monitoring?A key element of conservation practice and policy is species population monitoring, which is defined here as the regular, systematic gathering of data to detect long-term changes in the populations of wild species.
To examine regional, chronological, taxonomic, and methodological patterns in global species monitoring, we built a database of over 1200 programs .
Through standardized web searches, an online stakeholder survey, thorough national searches in a selection of nations, and a review of international biodiversity databases, we discovered monitoring systems.
Most taxonomic groups continue to have scant and poorly coordinated monitoring, and the majority of the data produced are elusive and unlikely to contribute to larger processes for biodiversity conservation.
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Consider the molecule below. Determine the molecular geometry at each of the 2 labeled carbons. HELP ME PLEASE ASAP
C1 = trigonal planar, C2 = bent
B
C1 = trigonal planar, C2 = tetrahedral
C
C1 = bent, C2 = trigonal planar
D
C1 = tetrahedral, C2 = linear
The hybridization state of the atom determines its shape in the molecule. C1 is sp2 hybridized and has trigonal planar geometry while C2 is sp3 hybridized and has a tetrahedral geometry.
The shape of a molecule or a moiety in a molecule is determined by the number of electron pairs that are present on the valence shell of the central atom in the molecule.
The hybridization state of the atom also determines the shape of the atom. In the compound, the carbon atom labelled 1 is sp2 hybridized so it will have a trigonal planar geometry. The carbon atom labelled 2 is sp3 hybridized hence it is tetrahedral.
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PLEASE HELP
ONE WRITTEN QUESTION
NO LINKS!!!!!!!!
- Using the graph above, describe the connections between temperature of a solvent and the solubility of a solute that is a solid.
Answer: The higher the temperature the easier a solid will dissolve.
Explanation: This is because the heat 'excites' the solvent making it easier for it to break apart/ split away from each other
Question 5 of 5
A student is making a model of the famous Giza pyramid,
which has four triangular sides and a square base. The
scale of the model is 1:1,000.
How many sides should the model pyramid have?
A. 6
B. 4
O
C. 12
O D. 3
Could you guys help me pls
Order the following phases of matter from the phase with the most space between the
atoms to the least space between the atoms.
Answer:
Gas>Liquid>Solid
Explanation:In a gas state, molecules are allowed to move freelyand rarely collide into nearby particles. In a liquid state, the molecules are contained within the liquid and occasionally bump into each other. now in a solid state the atoms arrange themselves into a structure that the atoms sit very tightly next to each other, sometimes vibarating
An icecube is placed in the sun. Later there is a puddle of water. Later still the puddle is gone
Answer:
That's called an physical change which is an change in the state of matter
Explanation:
Physical changes are changes affecting the form of a chemical substance, but not its chemical composition. Physical changes are used to separate mixtures into their component compounds, but can not usually be used to separate compounds into chemical elements or simpler compounds.
Calculate the relative formula mass for KMnO4
Explanation:
please mark me as brainlest
Most scientist believe the Big Bang Theory explain which of the following statements?
Answer: 1. How our universe began. 2. Fred Hoyle.
Explanation: Hope this helps
Most scientist believe the Big Bang Theory explain how our universe began and is denoted as option B.
What is Big bang theory?This theory talks about how a single point began to expand which resulted in the formation of the universe.
It was coined by Fred Hoyle thereby making it the most appropriate choice in this scenario.
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nyatakan maksud bagi kation
lanuage ? lanuage ? lanuage ?
What is the maximum numbers of orbitals in the p sublevel
Answer:
3
Explanation:
hope the picture helps you to understand :)
A train travels 18 kilometers in 12 minutes. At this rate, how far does the train travel in 1 minute?
[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]
Distance covered in 12 minutes = 18 km, now
Unit rate is equal to :
[tex] \dfrac{18}{12} [/tex][tex] \dfrac{3}{2} [/tex][tex]1.5 \: \: \: km \: \: per \: \: minute[/tex]The train travels 1.5 km in 1 minute time interval.
Answer:
[tex]\huge\boxed{\sf 1\ minute = 1.5\ kilometers}[/tex]
Explanation:
12 minutes = 18 kilometers
Divide both sides by 12
12/12 minutes = 18/12 kilometers
1 minute = 3/2 kilometers
1 minute = 1.5 kilometers
[tex]\rule[225]{225}{2}[/tex]
Hope this helped!
~AH1807
why are ionic solids brittle
Answer:
-The ionic solids are hard and brittle because the ions in ionic solids are held in a lattice due to the electrostatic forces of attraction in cations and anions as well as the repulsion with the like charges. ... Because the ionic solids are localized, these solids tend to be stiff and brittle like covalent solids.
Explanation:
what did werner heisenberg discover about the atom
what are x and y in the reaction shown?
ammonium chloride + solution x - alkaline gas y
Answer: im not sure rlly what u mean but x is the answer?
Explanation:
NEED HELP ASAP!!!!!!!!!!!!