Answer:
1. 1s² Grupo: 18 Periodo: 1
2. 1s²2s²2p⁶3s¹ Grupo: 1 Periodo: 3
3. 1s²2s²2p⁶3s²3p⁶4s² Grupo: 2 Periodo: 4
4. 1s²2s²2p⁶3s²3p⁶4s²3d¹ (electrones de valencia) Grupo: 3 Periodo: 4
5. 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p³ (electrones de valencia) Grupo: 15 Periodo: 4
Explanation:
La configuración electrónica de los elementos es la disposición de todos los electrones de un elemento en niveles y subniveles de energía (orbitales).
Hay 7 niveles de energía, numerados del 1 al 7, y en los que los electrones se distribuyen, lógicamente, en orden según su nivel de energía. Los electrones con menos energía girarán en el nivel 1. Cada nivel se divide en subniveles. Estos subniveles en los que se divide cada nivel pueden ser hasta 4. Estos 4 subniveles se denominan: s, p, d, f. En el subnivel s solo puede haber un máximo de 2 electrones, en p puede haber un máximo de 6 electrones, en el subnivel d 10 electrones y finalmente en el subnivel f puede haber un máximo de 14 electrones.
Por otro lado, los electrones de valencia son los electrones que se encuentran en la última capa electrónica (denominada orbitales de valencia) y tienen muchas posibilidades de participar en una reacción química.
En la tabla periódica, en cada período aparecen los elementos cuyo último nivel de su configuración electrónica coincide con el número del período, mientras que en cada grupo aparecen los elementos que presentan el mismo número de electrones en el último nivel ocupado o capa de valencia. Entonces:
1. 1s² Grupo: 18 Periodo: 1
2. 1s²2s²2p⁶3s¹ Grupo: 1 Periodo: 3
3. 1s²2s²2p⁶3s²3p⁶4s² Grupo: 2 Periodo: 4
4. 1s²2s²2p⁶3s²3p⁶4s²3d¹ (electrones de valencia) Grupo: 3 Periodo: 4
5. 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p³ (electrones de valencia) Grupo: 15 Periodo: 4
Science, Geology, Class 8
1. choose the correct answer ( CTCA )
a. what makes the soil fertile?
i. rock particles
ii. humus
iii. sand particles
iv. silt particles
Answer:
Humus
Explanation:
Also known as the uppermost layer of soil, that's for making soil more fertile due to its organic content.
What group of archaebacteria is both thermophilic and acidophilic?
Pyrogens
Methanogens
Thermoacidophiles
Halophiles
Answer:
Thermoacidophiles
All enzymes which catalyze the chemical reactions of a cell are
a. carbohydrates b. lipids c. long-chain fatty acids d. proteins e. ribonucleic acids no another by differences in
Answer:
I think the answer will be protein.
Answer:
the answer is carbohydrates
Which type of plate boundary would be most likely to lead to above-ground volcanic activity?
A . Subduction
B .divergent
C.collisional
D . Transform
Answer:
A.Subduction
Explanation:
In a subduction zone, one plate slides beneath another. This leads to friction that can melt the crust and result in volcanic activity
Where do convection currents occur atmophere
Answer:
Convection takes place in the atmosphere, in the oceans, and in Earth's molten subcrustal asthenosphere.
Explanation:
Why do plant cells have chloroplasts?
Answer:
The chloroplast has chlorophyll and the chloroplasts also helps with makes photosynthesis happen. It takes the suns energy and turns it into energy for the plant. So it uses solar energy and makes chemical energy.
Explanation:
What are the physical characteristics that all specimens have in common
The physical characteristics that all specimens have in common can be presence of cells, as there is no specimen given, let's take animals. A dichotomous key can be used to find the similarity.
What is a specimen?A specimen can be anything that is displayed regarding the subject. In labs the specimens can be chemicals, animals, plants, any objects, etc.
Specimens are displayed to learn about them, to see the actual version of that animal that can not be seen easily.
Thus, Because no specimen is provided, let's take animals as an example, the presence of cells is a trait that all specimens share. To find the similarity, a dichotomous key might be utilized.
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can you suggest me some biology experimental project work topics?
Answers:
1. General
2. Reproduction
3. Health
4. Genetic Engineering
5. Technical Experiments on Humans
6. Relationships and Media
7. War
8. Information and Communication Tech
9. Computer Science and Robotics
state te type of cell devision of cross section tips of onion root.
How are proteins and nucleic acids related?
Answer:
C) The structure of proteins is determined by nucleic acids.
Explanation:
Protein is a polypeptide-based molecule. Polypeptides are a type of biological molecule made up of chains of amino acids. Nucleic acid, which comprises deoxyribonucleic acid (DNA) and ribonucleic acid (RNA), is a family of macromolecules made composed of long chains of polynucleotides (RNA).
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Which of the following is an example of a physical change?
O A. A gas is given off when two substances are mixed.
B. A copper rod is hammered into a thin sheet.
C. A solid forms when two clear liquids are mixed.
O D. A matchstick changes color when it burns.
A gas is given off when two substances are mixed.
physical change: A copper rod is hammered into a thin sheet.
A solid forms when two clear liquids are mixed.
A matchstick changes color when it burns.
explanation
a physicals change vs chemical
physical change is like cutting, changing shape etc, it the molecules that make it and the chemicals of it stay same
chemical change when it chemically changed such as cooking meat
Which is a benefit of binomial nomenclature?
1.Fewer common names
2.Increased understanding and communication
3.Reduced plant-related poisoning
4.Better understanding of genetics of plants
We have all heard about earthquakes or the cyclones that attack the coastal regions. Think of as many different ways as possible in which people's health would be affected by such a disaster if it took place in our neighbourhood. (a) How many of these health -related events would occur long after the actual disaster, but would still be because of the disaster? (b) How can it affect the life of people if in case of a pandemic?
Answer:
The disease spread to the neighbourhood.
Explanation:
If the disaster such as earthquake and pandemic etc occurs in the neighbourhood so it also affected the health of the people of that region as well as the people that lives in the neighbourhood. In the case of pandemic, the disease spread to the neighboring area and affect the health of people while on the other hand, in earthquake the people of neighbourhood is also affected if the intensity of earthquake is higher.
Anthropologist have a keen interests in honey bees .why?
Answer:
But extrapolate to all the bees in a beehive and that singular moment is multiplied tens of thousands of times. ... The honey bee and flowering plants represent one of the most successful examples of mutualism in nature. Our food chain depends very heavily on the role of the bee as it pollinates.
what is nitrification? describe the role of nitrify bacteria in this process
Nitrification is a process that converts ammonia into nitrate by bacteria.
Role of bacteriaThe bacteria Nitrosomonas and Nitrococcus present in the soil convert NH3 to NO2-, and another bacterium, Nitrobacter converts NO2- to NO3-. These bacteria gain energy through these conversions.
If you have a measurement of 234.005 k, how many significant figures does it have
Answer:
It has 6 sig figs
Explanation:
235.005
Every digit is significant.
which type of scientific inquiry requires variables and control group
Answer:The correct answer will be options-a scientific question, a procedure and a conclusion
Explanation:
The scientific investigation is performed to answer, understand and explain the natural events or phenomenon. The scientific investigation is performed through one of the types of scientific investigation that is descriptive, comparative, and experimental.
The common components of all types of investigation are :
1. Scientific question: the question is asked on the basis of observation made which could be answered.
2. Procedure: the sequential steps are followed to answer and test the scientific question.
3. Conclusion: the main aim of the investigation is the conclusion or inference to the scientific question which is an explanation of the question.
Explanation:
Identify the four key concepts of Darwin's theory of natural selection. (2 marks)
Explain how Lamarck's theory was different and why it got rejected over time. (2 marks)
by which large pieces of food are cut and crushed into
smaller pieces is called
a. emulsification b. chemical digestion
c. absorption de mechanical d
5. The tube that connects the mouth to the stomach is the
a. esophagus. b.epiglottis
c. peristalsis. d. pancreas.
5. The hard, outer coating of the tooth is called
a, a molar.
b. enamel.
c. an enzyme. d. dentin
- The building blocks of proteins are
a. enzymes. b. minerals,
c. amino acids, d. molecules
5. Which of the following vitamins is made by the body?
a. vitamin D- b. vitamin A c. vitamin C d. vitamin B
. Having too little of the mineral iron can cause
a. rickets.
b. goiter.
c. anemia d. beriberi.
The wavelike motion that moves food through the digestive tract is called
a. emulsification b. digestion. c. oxidation d. peristalsis.
. The enzyme that digests proteins is called
a. gastric juice. b. pepsin. c. chyme. d. lipase.
Food leaves the stomach in a thick, liquid form called
a. chyme. b. bile с. pepsin.
d. saliva
The movement of food molecules from the digestive system to the blood is called
a. emulsification. b. chemical digestion. c. absorption d. peristalsis.
Gastric juice contains all of the following except
a. hydrochloric acid
b. mucus c. pepsin
d. bile
The process by which large food molecules are broken down into smaller food
molecules is
a. chemical digestion. b. oxidation c. mechanical digestion d. absorption
d. mouth
Fats are digested in the
a. large intestine b. small intestine. c. stomach.
Poor nutrition caused by an unbalanced diet is called
a. rickets. b. anemia. c. malnutrition
d. goiter.
The fingerlike projections on the lining of the small intestine are called
h cilia
d. villi.
c. bile
Answer:
by which large pieces of food are cut and crushed into
by which large pieces of food are cut and crushed intosmaller pieces is called:
d. mechanical digestion
5. The tube that connects the mouth to the stomach is the:
a. oesophagus
5. The hard, outer coating of the tooth is called:
b. enamel
- The building blocks of proteins are:
c. amino acids
5. Which of the following vitamins is made by the body?
a. vitamin D- b. vitamin A c. vitamin C
. Having too little of the mineral iron can cause:
b. goitre
The wavelike motion that moves food through the digestive tract is called:
d. peristalsis
Gastric juice contains all of the following except:
d. bile
The process by which large food molecules are broken down into smaller food
The process by which large food molecules are broken down into smaller foodmolecules is:
c. mechanical digestion
Fats are digested in the:
b. small intestine
Poor nutrition caused by an unbalanced diet is called:
c. malnutrition
The fingerlike projections on the lining of the small intestine are called:
b. villi
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Answer:
d. mechanical digestion
a. esophagus
b. enamel
c. amino acids
a. vitamin D
c. anemia
d. peristalsis
b. pepsin
a. chyme
c. absorption
b. mucus
a. chemical digestion
b. small intestine
c. malnutrition
b. villi
Not 100% sure on some of these but very positive on most of them :) Hope this helps.
Explanation:
State one reason why soil organisms need air
Answer:
Soil organisms need air because to release plants nutrition to soil .
why is the product MILO not a suitable for a vegan diet
MILO and MILO products may not be suitable for a vegan diet due to:
MILO and its products consist mainly of cocoa, malt barley, sugar, and milk powder. Milk powder essentially comes from animals.A vegan is a person whose lifestyles exclude animal products, especially when it comes to diets. A vegan diet primarily consists of plant and plant products.Hence, the fact that MILO consists of powder milk which is animal-based might make it unsuitable for a vegan diet.
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Answer:
Explanation:
VEGAN DIET
A Vegan diet refers to diet that contain food from plants such as maize , beans, rice, wheat e.t.c It is mainly plants source and does not contain animal source.
But MILO is also Plant based energy and it contains several vitamins and minerals to help grow a healthy body: It contain Vitamins B2 and B3 which help to support effecient energy release in the body. It contain Essential nutrients like iron, zinc which are very minute
in plant based diets. Milo contain milk which is of animal source.
Therefore, Milo product is not suitable for a vegan diet because it contains milk solids which is derive from animal source.
Need help someone knows the answer
Answer:
d. landfill materials
Explanation:
Produces proteins drop down menus
Explanation:
Ok, then what do you need explanation for that ??
Carbohydrates info
A. AKA:
B. Composed of:
C. Monomer:
D. Polymer:
E. Functions:
Look at the branching tree diagram below.
A slanting, horizontal line is shown. On the extreme left, there is a label that says Common Ancestor. Along the slanting, horizontal line there are five dots labeled from left to right with the following traits Four limbs, Amniotic egg, Fur, Shearing teeth, and Retractable claws. There is one vertical line between each of the consecutive five dots. The lines are labeled from left to right as Amphibians, Reptiles, Marsupials, Dogs, Cats.
Which group of organisms evolved after dogs?
Only cats
Only marsupials
Both cats and marsupials
Both amphibians and reptiles
Answer:
both cats and marsupials
Answer: Both Amphibians and Reptiles
Explanation: I took the test and got it, so.....
The human heart weighs how many pounds
After careful consideration your answer is...
Just about 1 pound
*Hope I helped*
~Alanna~
1 lb (pound)
Explanation:
it is the answer.
Why do doctors have to check what blood type a person has before receiving a
transfusion?
0
A. Different blood types have different antibodies that will be attacked by someone with
antigens against that blood type.
B. Different blood types have different antigens that will be attacked by someone with
antibodies against that blood type.
C. Your blood type doesn't matter as long as you get the correct amount of blood in a
transfusion.
O
D. They need to have the same blood type because their DNA must be similar enough to
blend or will cause side-effects and possibly be rejected.
Answer:
A. Different blood types have different antibodies that will be attacked by someone with
antigens against that blood type.
In a rainforest, there are trees of different sizes as shown in the figure below.
The trees in the UNDERGROWTH layer will probably face competition for which of the following resources?
a. Air
b. Water
c. Animals
d. Sunlight
Is a ping pong ball a nonliving or living thing and why
Answer:
A ping pong ball is nonliving because it does not have a brain or living cells. It is plastic.
Approximately how many mutations occur naturally in DNA per 10,000 bases?
A. 2
B. 2000
C. 200
D. 20
Explanation:
Modern methods indicate that the mutation rate is roughly one to two mutation per 10,000 genes per generation.
In human cells, approximately TWO (2) MUTATIONS occur naturally in DNA per 10,000 bases (Option A is correct).
The mutation rate (u) refers to the occurrence of new mutations in a given nucleotide sequence over time.In human cells, the mutation rate is approximately 10⁻⁴ per generation.Therefore, in a DNA sequence that has 10,000 base pairs of length, this value is equal to 2 mutations per generation (u = 2 / 10,000 = 10⁻⁴).In conclusion, approximately 2 MUTATIONS occur naturally in DNA per 10,000 bases (Option A is correct).
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