Answer:
n
Explanation:
nn
Which of the following are simple molecular ions? NH4+ NaCl NO3- CO3 2-
Answer:
[tex]NH_{4} ^{+}, NO_{3} ^{-}, CO_{3} ^{2-}[/tex]
Explanation:
A molecule is a chemical species containing at least two chemically-bonded atoms while an ion is a charged chemical species.
Hence, a molecular ion must be a molecule and must carry a charge (positive or negative).
Given the two criteria above, then [tex]NH_{4} ^{+}, NO_{3} ^{-}, CO_{3} ^{2-}[/tex] are all molecular ions. [tex]NaCl[/tex], although a molecule, is not a molecular ion because it is not charged.
The following are simple molecular ions NH₄⁺, NO₃⁻, and CO₃²⁻. The correct options are a, c, and d.
What are molecular ions?Molecular ions are the name given to molecules and elements that are charged either positively or negatively. Many elements participate in chemical reactions and form bonds with each other's atoms. Those elements that have a charge on them are known as molecular ions.
These elements or compounds taking part in bond formation are called ions because when they donate or get electrons, they acquire a charge, positive or negative.
In the following, NH₄⁺, NaCl, NO₃⁻, and CO₃²⁻. All are simple molecules, but NaCl is not considered an ion because it does not contain any charge. So this will not be an ion.
Thus, the options are a. NH₄⁺, c. NO₃⁻, and d. CO₃²⁻.
To learn more about molecular ions, refer to the below link:
https://brainly.com/question/17122791
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what are the two main a biotic factor that affect organisms in a marine ecosystem
Answer:
one of these a or b i know that much
Explanation:
my bad
Answer:the answer will be ----------- B oxygen level and water temperature
Explanation:
njsdnjcnjncds just know ;)
What industry was created when people suddenly had more time and money available?
A plant grows faster and fuller due to large amounts of fertilizer. If the plant cross-pollinates with another plant later, how will the use of fertilizer on the parent plant affect the plant’s offspring?
Answer:
The answer is "C" because nothing that your parents do, unless it directly affects/changes the gametes, will pass down to the offspring. Fertilizer is like food, how much your parents have eaten in their childhoods will have no effect on if you are under or over weight. (Unless their weight was by a genetic cause, that might have been passed on to you.)
Explanation:
will give BRAINLIEST, if explanation is good and answer is correct. Explain how dead plants can be formed into fossil fuels
Answer:
they can be formed into fossil fuels by breaking down.
Explanation:
Fossil fuels are formed when organic matter that has been buried deep within the earth are subject to heat and pressure over millions of years. ... In both cases, the dead organisms are buried over time and the extreme heat and pressure converts these dead organisms into either coal, natural gas, or oil.
Carly has wavy hair. Her father has straight hair, and her mother has curly hair. Which type of inheritance pattern is responsible for Carly’s wavy hair?
A.
codominance
B.
dominant
C.
incomplete dominance
D.
polygenic
E.
recessive
Answer:
Incomplete Dominance
Explanation:
The radius of the Crab Nebula is approximately 5.225 × 1013 kilometers. Use the conversion factor 1 light-year = 9.5 × 1012 kilometers to find the radius in light-years.
Answer:
Using the above conversion
9.5 x 10 ^12kilometers = 1 light year
Therefore 5.225 x 10^13 will be
5.225 x 10^13/ 9.5 × 10^12 × 1 light year
= 5.5 light years
The radius of the Crab Nebula is
5.5 light years.
Hope this helps
Answer:
Plato says 5.5 ly
In medels experiment, why did wrinkled seed shown up in the F2 generation, even though they were not present in the F1 generation
a person who is more than 2o percent heavier than the average person of the same sex and height is said to be
Answer:
overwieght
Explanation:
Through advancements, we are now able to classify
organisms into three domains by analyzing the______. Fill in the blank.
Answer:
rRna
Explanation:
Answer:
by analyzing the Ribosomal RNA
Explanation:
took the test :)
A plant has two alleles for color. The red allele is recessive, and is represented by q. The purple allele is dominant, and is represented by p. If 59 of 100 organisms are red, what is q? P^2 2pq q^2=1
Answer:
q is 0.7681
Explanation:
The red allele is recessive, and is represented by q.
If 59 of 100 organisms are red meaning the frequency of the recessive genotype of red is 59/100 = 0.59 represented by q².
Thus q would be to find the square root of q². Where q is the frequency of the recessive allele in the population
Thus, q = √q² where q² = 0.59
q = √0.59
q = 0.7681
.
1. What is a fuel?
3. Define carbonisation.
5. What is the black gold?
Ans
E. Answer the following questions in one word or a single sentence.
2. Name the type of coal which contains minimum carbon content.
4. Which gas is also known as the town gas?
6. Name the constituents of petroleum used to make road surfaces.
Explanation:
1.fuel is a material such as coal, gas, or oil that is burned to produce heat or power.
3. it is defined as partial oxidation of tissue hydrocarbon compounds if the temperature exceeds 200°C and the tissue is within an oxygen-containing atmosphere.
5.Black gold is an informal term for oil or petroleum—black because of its appearance when it comes out of the ground, and gold because it made everyone involved in the oil industry rich.
2.Lignite: Lignite coal, aka brown coal, is the lowest grade coal with the least concentration of carbon.
4.Town gas Also known as coal gas, and contains hydrogen (H2), carbon monoxide (CO), carbon dioxide (CO2), methane (CH4), nitrogen (N2) and volatile hydrocarbons. It is made by blowing air and steam over an incandescent fuel bed, usually of coke or coal.
6.Bitumen is the petroleum product which is used for surfacing of roads and paints these days.
Which table shows two steps of DNA replication?
Answer:
The 2nd Table
Explanation:
DNA Polymerase is used in DNA replication and attaches Adenine to Thymine and Cytosine to Guarine (Remember it is always A to T and C to G). The 3rd table would be incorrect because cytosine doesn't attach to thymine. The 1st table would be incorrect because Uracil is used in RNA replication, not DNA replication.
DNA replication is the process by which DNA makes a copy of itself during cell division.
Table 2 shows the two steps of DNA replication, DNA polymerase matches adenine to thymine and cytosine to guanine and two identical DNA double-helical, are produced.
Replication occurs in three major steps:
The opening of the helix and separation of the DNA strands. The priming of the template strand, and therefore the assembly of the new DNA segment.
During separation, the 2 strands of the DNA helix uncoil at a selected location called the origin.
Therefore, table 2 shows the two major steps of DNA replication.
Learn more about DNA replication here:
https://brainly.com/question/9076432
How do animals get rid of excessive nitrogen?
Answer:
Animals get rid of nitrogen by converting it int urea uric, acid and ammonia.
Explanation:
Answer:
adding c02
Explanation:
Question 5 of 10
2 Points
To test how fertilizer affects tomato plants, a farmer divided a field of young
tomato plants into 10 plots of equal size. The farmer then put fertilizer on half
of the plots and no fertilizer on the other half of the plots. The control group
in this experiment was:
A. all the plots in the field.
B. the tomato plants in all the unfertilized plots.
C. all the tomatoes planted in the field.
a
D. the tomato plants in all the fertilized plots.
Answer:D
Explanation:
Answer:
B. the tomato plants in all the unfertilized plots.
Explanation:
hope it helps .
what is measurement
Measurement is defined as the act of measuring or the size of something. An example of measurement means the use of a ruler to determine the length of a piece of paper. An example of measurement is 15" by 25".
Answer:
This is the act of measuring something or the act of taking the length, weight or height of something,e.t.c.
Explanation:
What is the number of this particle in a phosphorus atom?
Ap ex
Answer:
Fósforo
Símbolo P, número atómico 15, peso atómico 30.9738. El fósforo forma la base de gran número de compuestos, de los cuales los más importantes son los fosfatos. En todas las formas de vida, los fosfatos desempeñan un papel esencial en los procesos de transferencia de energía, como el metabolismo, la fotosíntesis, la función nerviosa y la acción muscular. Los ácidos nucleicos, que entre otras cosas forman el material hereditario (los cromosomas), son fosfatos, así como cierto número de coenzimas. Los esqueletos de los animales están formados por fosfato de calcio.
Cerca de tres cuartas partes del fósforo total (en todas sus formas químicas) se emplean en Estados Unidos como fertilizantes. Otras aplicaciones importantes son como relleno de detergentes, nutrientes suplementarios en alimentos para animales, ablandadores de agua, aditivos para alimentos y fármacos, agentes de revestimiento en el tratamiento de superficies metálicas, aditivos en metalurgia, plastificantes, insecticidas y aditivos de productos petroleros.
De casi 200 fosfatos minerales diferentes, sólo uno, la fluoropatita, Ca5F(PO4)3, se extrae esencialmente de grandes depósitos secundarios originados en los huesos de animales y que se hallan en el fondo de mares prehistóricos, y de los guanos depositados sobre rocas antiguas.
La investigación de la química del fósforo indica que pueden existir tantos compuestos basados en el fósforo como los de carbono. En química orgánica se acostumbra agrupar varios compuestos químicos dentro de familias llamadas series homólogas.
Esto también puede hacerse en la química de los compuestos de fósforo, aunque muchas familias están incompletas. La familia mejor conocida de estos compuestos es el grupo de cadenas de fosfatos. Las sales de fosfatos constan de cationes, como el sodio, junto con cadenas de aniones, como (PnO3n+1)(n+2)-, que pueden tener de 1 a 1 000 000 de átomos de fósforo por anión.
Los fosfatos se basan en átomos de fósforo rodeados en una disposición tetraédrica por átomos de oxígeno, el miembro más pequeño de la familia es el anión simple PO3-4 (el ion ortofosfato). La familia de las cadenas de fosfato se basa en hileras alternadas de átomos de fósforo y oxígeno en que cada átomo de fósforo permanece en el centro de un tetraedro de cuatro átomos de oxígeno. Hay también una familia estrechamente relacionada de fosfatos cíclicos.
Una característica estructural interesante de muchos de los compuestos del fósforo conocidos es la formación de estructuras tipo jaula. Ejemplos de estas moléculas son el fósforo blanco, P4, y uno de los pentóxidos de fósforo, P4O10. Las estructuras tipo red son comunes; por ejemplo, los cristales de fósforo negro en que los átomos están enlazados unos con otros.
En la mayor parte de sus compuestos, el fósforo está enlazado químicamente a cuatro átomos inmediatos. Hay gran número de compuestos en los que uno de los cuatro átomos está ausente y en su lugar hay un par de electrones no compartidos.
Hay también unos cuantos compuestos con cinco o seis átomos unidos al fósforo; son muy reactivos y tienden a ser inestables. Durante los años 60 y 70, se prepararon muchos compuestos orgánicos de fósforo. La mayor parte de estas estructuras químicas incluye tres o cuatro átomos enlazados al fósforo, pero existen también estructuras con dos, cinco o seis átomos unidos a cada átomo de fósforo.
Casi todo el fósforo utilizado en el comercio está en forma de fosfatos. La mayor parte de los fertilizantes fosfatados constan de ortofosfato diácido de calcio u otofosfato ácido de calcio muy impuros, Ca(H2PO4)2 y CaHPO4. Estos fosfatos son sales del ácido ortofosfórico.
El compuesto de fósforo de mayor importancia biológica es el adenosintrifosfato (ATP), que es un éster de la sal, el tripolifosfato de sodio, muy utilizado en detergentes y ablandadores de agua. Casi todas las reacciones en el metabolismo y la fotosíntesis requieren la hidrólisis de este tripolifosfato hasta su derivado pirofosfato, llamado adenosindifosfato (ADP).
Efectos del Fósforo sobre la salud
El Fósforo puede ser encontrado en el ambiente más comúnmente como fosfato. Los fosfatos son substancias importantes en el cuerpo de los humanos porque ellas son parte del material de ADN y tienen parte en la distribósforo que es conocida. Cuando el fósforo blanco ocurre en la naturaleza este puede ser un peligro serio para nuestra salud. El fósforo blanco es extremadamente venenoso y en muchos casos la exposición a él será fatal. En la mayoría de los casos la gente que muere por fósforo blanco ha sido por tragar accidentalmente veneno de rata. Antes de que la gente muera por exposición al fósforo blanco ellos a menudo experimentan náuseas, convulciones en el estómago y desfallecimiento. El fósforo blanco puede causar quemaduras en la piel, dañar el hígado, corazón y riñones.
Efectos ambientales del Fósforo
Answer:
Name: Phosphorus
Symbol: P
Atomic Number: 15
Atomic Mass: 30.974 atomic mass units
Number of Protons: 15
Number of Neutrons: 16
Number of Electrons: 15
Melting Point: 44.1° C
Boiling Point: 280.0° C
Density: 1.82 grams per cubic centimeter
Normal Phase: Solid
Family: Nonmetals
Period: 3
Cost: $4 per 100 grams
Origin of Name From Greek words phos, meaning light and phoros meaning bearer
Date and Place of Discovery In 1669 in Germany
Discovered by Hennig Brand
Explanation:
1 2 3 4 5 6 7 8 9 10
TIME REMAINING
52:11
Environmental factors can influence natural selection because they can increase or decrease
the number of chromosomes in an individual.
the number of chromosomes in a population.
the amount of genetic variation in an individual.
the amount of genetic variation in a population.
Answer:
49 sec
because you have never seemed yet 59 hour instead 12 hour.
but 24 hour also.
Major difference between messaging via the nerves and hormones
Answer:
the nerves produce immediate but short-living responses while hormo nes produce slow but short-living responses
Explanation:
i hope this will help you
Which term identifies the cell’s ability to maintain its internal conditions? transport diffusion osmosis homeostasis
Answer: Homeostasis
Explanation: The process of homeostasis is when self-regulation occurs in order to keep balance while adapting to changes.
Answer:
homeostasis
Explanation:
I got the question right
11. List two physical properties of soil.
list three conditions necessary for the germination of seed.
E.P BETHEL INTERNATIONAL SCHOOL- ACCRA NEWTOWN
END OF SECOND TERM EXAMINATION- 2020
INTEGRATED SCIENCE-JHS ONE
SECTION B (ESSAY) 6OMARKS
Answer any four questions in this section. Each complete question carries 15 marks.
2. a. i. State the reasons why some seeds are nursed.
(3mar
(2mar
(1x3.
(2mc
(2m
b. I. List three (3) conditions necessary for the germination of seed.
ii. State two functions of roots.
'c. (1) What is dispersal of seeds?
(11) State two characteristics of seeds dispersed by wind.
3. a. Apiece of stone has a mass of 360g. When it is put into water in a glass,
the level of water rises from 60.0cm to 90.0cm.Calculate the density of
(3r
(5
the stone.
b. i. List three benefits of vegetables to humans.
ii. Give two reasons why soil air is important.
c. 1. Define the term soil profile.
ii. State two ways in which soil profile is important in crop production
Answer:
Number 11 is the soil color and the soil texture.
Number 2.a.i. is to protect the seeds from harsh weather conditions e.g. sunlight rainfall etc.
b. water, oxygen and warmth
c.1) Seed dispersal is the scattering of seeds from a mother plant to new areas.
11) Seeds dispersed by wind have wing like structures.
Seeds dispersed by wind are light.
3a. Density=Mass/Volume
=360g/60cm³ then cancel zero and zero then cancel by 6 once by 36÷6 we get 6g/cm³
3bi)Vegetables are a source of food to humans.
Vegetables provide herbal medicine to humans.
ii)Plants require oxygen for germination.
Organisms in soil require air to breathe.
3c)Soil profile is the verticle arrangement of layers from top to bottom.
3d)It helps a farmer to know the fertility of the soil.
Explanation:
In which life stage can butterflies reproduce?
Answer:
Explanation:
All butterflies have "complete metamorphosis." To grow into an adult they go through 4 stages: egg, larva, pupa and adult. Each stage has a different goal - for instance, caterpillars need to eat a lot, and adults need to reproduce.
Describe the coastline and the features of the Pacific Ocean
Answer:
Coastline has lots of beaches and is an area for breeding for many sea animals.
Explanation:
idk
One of the most important factors in the rapid spread and dispersal of zoonotic diseases in the modern world is : a. increased demand for meat b. improved transportation including high-speed rail and air lines c. wind dispersal d. none of the above
Answer:
a. increased demand for meat
Explanation:
Zoonotic diseases refers to those diseases that are transferred to human host from an animal carrier. Zoonotic diseases can be transmitted when a living host is bitten by an animal or insect, eats a contaminated food and more. Examples of zoonotic diseases are; rabies, bird flu, anthrax, ebola etc.
Among the causes of zoonotic diseases, one of the most significant factors in the rapid spread and dispersal of zoonotic diseases in this modern world is the increase in demand for meat. Considering that eating contaminated and infected food from an animal can transfer the disease, an increase in demand for meat is one factor to look into regarding why zoonotic diseases are proliferating.
What is thought to bring different organisms such as fish and dolphins to have evolved a similar body plan?
Answer:
their very similar environments.
Explanation:
The type of evolution that is referenced here actually has a name -- convergent evolution. It's when two types of organisms/species have nothing in common ancestor-wise but still evolve similarly due to their similar environments. The similar body plan the question is referencing could include fins and other "fish features" as well. :-)
Question 2 of 10
2 Points
A small number of finches live in a protected bird sanctuary. Natural selection
is least likely to occur in this population if:
O A. the population has a low rate of mutation.
B. the population reaches carrying capacity.
O c. the finches use up all of their resources.
D. the finches are all genetically similar.
SUBMIT
Answer: b
Explanation:
A and D are incorrect because without mutation all animals would be genetically similar and that would affect the animals ability to evolve and cause them to go extinct. C is wrong because if they use all of their resources they can't live.
Answer:
The poputation reaches carrying capacity.
Explanation:
A PEX
If there is a high death rate and large amount of _______,
populations will likely decrease
Answer:
emigration
Explanation:
Which two planets have 53 moons? 1)Earth and Mercury 2)Jupiter and Saturn 3)Mercury and Mars 4) Neptune and Jupiter
Answer:
Jupiter and Saturn
Explanation:
Answer:
Saturn and Jupiter
Explanation:
Saturn has 82 moons, but 53 officially named
Jupiter has 79 moons, but 53 officially names.
Other than this, no other have exactly 53 in any way.
Hope this helps
What are 10 thing that classify as a second succession?
1. An area of growth.
2. A disturbance, such as a fire, starts.
3. The fire destroys the vegetation.
4. The fire leaves behind empty, but not destroyed soil.
5. Grasses and other herbaceous plants grow back first.
6. Small bushes and trees begin to colonize the public area.
7. Fast-growing evergreen trees and bamboo trees develop to their fullest, while shade-tolerant trees develop in the understory.
8. The short-lived and shade-intolerant evergreen trees die as the larger deciduous trees overtop them. The ecosystem is now back to a similar state to where it began.
I will give the brainiest
The brain sends messages
to the muscles through the
A)motor nerves.
B)eyes.
C)blood vessels.