Answer: We are given:
Mass of solvent (water) = 100 grams
Mass of solute (NaCl) = 20 grams
Mass of the Solution:
Mass of Solution = Mass of Solute + mass of Solvent
100 + 20 = 120 grams
Mass Percent of NaCl:
We know that
mass percent of NaCl = (Mass of NaCl / Mass of Solution) * 100
replacing the variables
Mass% of NaCl = (20 / 120)*100
Mass% of NaCl = 100 / 6
Mass% of NaCl = 16.67%
Explanation:
n the experiment "What Effect Does Vinegar Have on Plant Growth?" some plants were given only water, some were given only vinegar, and the others were given various mixtures of water and vinegar. Which of the following groups is the control group in the experiment?
50% water and 50% vinager
100% water
100% vinager
or 25% vinager and 75% water
50% water and 50% vinager
What are P waves and S waves? How are they recored?
Answer:
A P wave is a wave that is Shaped kinda like a P that is where it gets its name.
Same with the S wave. You measure them with a Therosimias meter.
Explain how a mutation has caused the Lactase Persistence gene in some people and not in others.
Answer:
It is a case of human niche construction
Explanation:
Lactase is an enzyme of mammals which is required to digest lactose. In humans (like in other mammals), lactase activity decreases during mid-childhood; although there are individuals which are still capable of producing this enzyme even during adult life, a trait known as 'lactase persistence'. Different mutations in the coding region of the lactase gene have been associated with lactase persistence in European, African and Asian populations. On the other hand, the niche construction theory states that the organisms, through their activities and choices, actively modify their own local environment by introducing novel selection pressures. Some examples of niche construction include, among others, alternation of nutrient cycling by plants or lactase persistence in humans. Lactase persistence can be defined as a case of niche construction because this trait was not only genetically inherited but also culturally transmitted through local environments shaped by ancestral populations, i.e., generated by niche construction or ecological inheritance.
(GIVING BRAINLIEST!!)
James made the following table to compare the common characteristics of planets. Which of the following would best replace X?
A) Asteroids
B) Comets
C) Moons
D) Stars
Answer: moons
Explanation:
Mars and Neptune both have moons
Answer:
hi answer is moons
Explanation:they have moons :)
2x+3y=12
x-5y=-7
solve simultaneously
Which of the following is NOT a description of ASTRONOMY edpuzzle
what is the problem with organizing organisms taxonomically purely based on their physical traits
Answer:
See the answer below
Explanation:
The problem with grouping organisms together taxonomically based on their physical traits is that organisms that not genetically or evolutionally similar would be grouped together. Grouping would be based entirely on superficial similarities instead of combining different features such as genetics, nutrition, the complexity of bodies, etc.
Based on physical traits, for example, all flying organisms will be grouped together. Birds, flying insects, bats, etc. would be grouped together, whereas, they are quite different from one another when it comes to the complexity of bodies and other features. Even though some insects have wings and can fly like birds, insects have exoskeletons and birds do not, the body of birds is more complex than that of insects, and evolutionally, birds are more advanced than insects.
Hence, grouping organisms based on their physical traits only would be too superficial and not reflect the true relationships between organisms.
Each trait of a plant is determined by
one gene
one dominant gene
a pair of genes
an allele
Answer: an allele .
Explanation:
Which best describes the two types of shared characteristics?
A 1 - characteristics that remain in the common ancestor and the modern organism
2 - characteristics that are new and have been modified from what was found in the
common ancestor
B 1 - characteristics that are new in the common ancestor and the modern organism
2 - characteristics that have been modified from what was found in the common
ancestor
C 1 - characteristics that have been modified in the common ancestor but not in the
modern organism
2 - characteristics that are new in both the common ancestor and the modern
organism
D 1 - characteristics that remain in the common ancestor and the modern organism
2 - characteristics that are new in both the common ancestor and the modern
organism
Answer:
characteristics that remain in the common ancestor and the modern organism. 2 - characteristics that are new and have been modified from what was found in the common ancestor. 1 - characteristics that remain in the common ancestor and the modern organism. ...Mar 11, 2020
Answer:
the answer is c
Explanation:
In a species of flowers, red petals (R) are dominant to orange petals (r). If two plants that are heterozygous for red petals are crossed, what are the possible genotypes of the offspring?
Answer:
RR, Rr, rr
Explanation:
PLEASE MARK ME AS BRAINLIEST
the biotic factors of each land biome are determined by its ___
climate
organisms
location
size
Answer:
climate
Explanation:
I want to give people some points so my question is...
IS THE SKY BLUE?
Answer:
yeah, common sense when its raining it isn't it is grey, when its sunny it is sky blue
Explanation:
Put the following in the correct order from smallest (#1) to largest (9)
Organ
[ Select ]
Tissue
[ Select ]
Atom
[ Select ]
Organelle
[ Select ]
Macromolecule
[ Select ]
Cell
[ Select ]
Organ system
[ Select ]
Molecule
[ Select ]
Organism
Answer:
atom
Explanation:
Viruses, unlike bacteria, are not living organisms. Based on the information in the table, which of the following provides evidence to support this statement?
Explanation:
1.) Unlike bacteria,virus cannot survive without a host.
2.)Virus are not made out of cells
3.)They lack means of reproduction outside the host cell.
Which statement about convection is correct?
A.
This transfer of heat can occur in gases.
B.
This transfer of heat can only occur in solids.
C.
This transfer of heat can only occur in gases and liquids.
D.
This transfer of heat can only occur in liquids.
Cellular respiration is a biological process in which glucose is broken down to form energy in the form of ATP. The reactants have a starting energy of 3564 kilojoules of energy, and the products have a resulting 2878 kilojoules of energy.
Which best describes cellular respiration?
It is an exothermic reaction because energy is lost.
It is an exothermic reaction because energy is gained.
It is an endothermic reaction because energy is lost.
It is an endothermic reaction because energy is gained.
Answer: (It is an endothermic reaction because energy is gained.)
It converts energy in food into a more usable form.
Answer:
d
Explanation:
NEED HELP
1. Prokaryote is a simple cycle compared to eukaryotic. The prokaryote is a
simple cycle because of three reasons.
A.
B.
C.
Answer:
A. Small size.
B. A single cell or unicellular.
C.it has one chromosome which is not true and it is called plastid.
Explanation:
This is because prokaryote are unicellular organisms that lack nucleus and membrane bound organelles. The are smaller in size compare to eukaryotic, which have large surface to volume ratio. They lack mitochondria, Golgi apparatus, endoplasmic recticulum, e t.c. They have only one chromosomes which is not even a true one and it is called plastid. Examples of prokaryote include bacteria.
I couldn’t fit the whole question in so the last two options are
-Natural disasters are so rare that they have not affected human population very much
-Natural disasters are a concern for human, life and property, but there is nothing we can do to predict them or prepare for them
Thank you! Will mark brainliest
Answer:
how natural disasters are a concern for human, life and property
Gravitational force multiple choice
Answer:
Option B. The force would be quartered (factor of 1/4).
Explanation:
The gravitational force between two objects can be expressed with the equation:
By analyzing the equation, we can see that if we multiply both m1 and m2 by 1/2, the resulting new F would be lower by a factor of 1/4 (as 1/2 times 1/2 equals 1/4).
Thus the correct answer is option B.
What are three differences between rocks and soil
Answer:
Rocks are made of one or more minerals. based on the way the rock was formed: sedimentary metamorphic and igneous Soil is formed of fine rock particles mixed with air, water and particles from dead plant and animal matter.
The tendency for a body at rest to remain at rest is known as
A. inertia.
B. torque.
C. momentum.
D. acceleration.
E. force.
Answer:
A. Inertia
Explanation:
Answer:
A. inertia.
Explanation:
Newton's Law of Inertia: Inertia is the tendency of an object to remain at rest or remain in motion.
During which cell cycle stage is a cell plate Present and what is its purpose
!!pls help!!
taj incorrectly states that autographs are also known as consumers that need to feed on other organisms, including plants and animals, to gain energy. which of the following best describes consumers that feed on other organisms such as plants and animals for energy?
A. carnivores
B. trophic levels
C. heterotrophs
D. herbivores
Herbivores best describes consumers that feed on other organisms such as plants and animals for energy.
What do you mean by herbivores?A herbivore is an animal anatomically and physiologically adapted to eating plant material, for example foliage or marine algae, for the main component of its diet.
Many herbivores have large, dull, flat teeth. These teeth are excellent for chewing and breaking down tough plant material. Carnivores have sharp, narrow teeth that are better for biting and tearing flesh. However, some herbivores also have strong, sharp teeth.
Examples of large herbivores include cows, elk, and buffalo. These animals eat grass, tree bark, aquatic vegetation, and shrubby growth. Herbivores can also be medium-sized animals such as sheep and goats, which eat shrubby vegetation and grasses.
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The curving of Earth's planetary winds is due to:
A)the Coriolis Effect.
B)Earth's tilt on its axis.
C)density differences.
D)gravity.
Answer:
It is due to the coriolis effect
Explanation:
Why are viruses considered nonliving but bacteria are considered living? Give two reasons.
Not a long life story but a simple two reasons.
Answer:
1-Viruses also lack the properties of living things: They have no energy metabolism, they do not grow, they produce no waste products, and they do not respond to stimuli.
2-They also don't reproduce independently but must replicate by invading living cells.
Codons is a set of three nucleotides that can code for multiple different proteins.
True
False
Ninety nine percent of the atmosphere is composed of _____ and _____.
Answer:
Ninety nine percent of the atmosphere is composed of Nitrogen and Oxygen
Answer:
78% nitrogen and 21% oxygen
Explanation:
What increases as you move from the surface to the interior of the Earth?
Answer:
Heat/temperature
Explanation:
"There are three main sources of heat in the deep earth: (1) heat from when the planet formed and accreted, which has not yet been lost; (2) frictional heating, caused by denser core material sinking to the center of the planet; and (3) heat from the decay of radioactive elements." These give the core and a few of the outer layers of the earth more and more heat.
Florida has many different land and water ecosystems.
TRUE
FALSE
Answer: That would be true.
biological macromolecules are organized into four main categories. What type of macromolecule contains phosphorus as part of a phosphate group?
1.) lipids
2.) proteins
3.) nucleic acid
4.) carbohydrates
Answer:
3.) nucleic acid
Explanation:
Biological macromolecules can be defined as a very large molecule (structure) that comprises of covalently bonded organic atoms and smaller molecular structures (monomers).
Biological macromolecules are organized into four main categories and these includes;
I. Lipids: these categories of biological molecules is mainly made up of fats and it is responsible for providing the body with long-term energy.
II. Carbohydrates: it is contained in energy-giving foods and it aids the functioning of the muscles, nervous system and other organs found in the body.
III. Proteins: it contains amino acids and it is responsible for maintaining the functioning of the body system.
IV. Nucleic acid: it comprises of deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) which are the genetic codes (blueprints) for living organisms.
Hence, the type of macromolecule that contains phosphorus as part of a phosphate group (sugar 2-deoxyribose) is nucleic acid.
From the biological macromolecules, Nucleic acids contains phosphorus as part of a phosphate group.
Nucleic acids are biopolymers, macromolecules, crucial for all known types of life. Nucleotides, which are the monomer components, make up their structure. a sugar with five carbons, a phosphate group, and a base with nitrogen. Deoxyribonucleic acid and ribonucleic acid are the two main types of nucleic acids.
Deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) are two types of nucleic acids that carry genetic information that is read by cells to create the RNA and proteins that allow living things to function.
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