Answer:
The answer is B. base Have a great day!!!
The correct answers are:
1. Acid 2. Hydrogen ions 3. Hydroxide ions 4. The solution becomes neutral 5. base 6. acid.
The pH scale is the standard scale that specifies if an aqueous solution is acidic or alkaline/ basic. pH means the relative concentration of hydrogen ions, H+, and hydroxy OH- ions in the solution.
Lower pH values (0 - 7) exhibit more hydrogen ions which means the solution is acidic for instance Strawberry kool-aid add into the water strawberry kool-aid releases H+ ions in the solution.Hence strawberry kool-aid is an acid.
Higher values in the pH scale (7-14) are an indicator for the alkaline or base solution, Alka-seltzer changes pH from 5.4 to 8.3 which means the solution concentration of OH- ions increases and the solution becomes basic.Hence, the solution is basic and the Alka-seltzer gives hydroxy ions in the solution.
Given that baking soda is a strong base and hydrochloric acid is a strong acid, mixing both leads to salt and water as both have almost equal strengths of acid and base neutralization, therefore, the solution would be neutral or slightly acidicOn the basis of the given explanation, we can say that bleach is base as it has a pH value of 9.4 whereas coffee is acidic as pH value is 5.Thus, the correct answer is - 1. Acid 2. Hydrogen ions 3. Hydroxide ions 4. The solution becomes neutral 5. base 6. acid.
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During which era did the last tyrannosaurus live
Answer:
Cretaceous
rex live? T. rex lived about 66–68 million years ago during the Cretaceous Period in the western United States, including Montana and Wyoming.
Explanation:
Answer:
super man
Explanation:
super man
Matthias Schleiden and Theodor Schwann looked at plant and animal cells. Schwann wrote the first part of what is known as the cell theory. Which statement did he write?
A.
All organisms are composed of one or more cells. All cells come from existing cells.
B.
All organisms are composed of one or more cells. The cell is the basic unit of life in all living things.
C.
All cells come from existing cells. The cell is the basic unit of life in all living things.
D.
All cells are microscopic in size. All cells come from existing cells.
If a certain organism is a secondary consumer, what best explains its position in the food web?
X, because organism X feeds on producers
Y, because organism Y feeds on producers
X, because organism X feeds on a carnivore
Y, because organism Y feeds on a herbivore
Answer:
Y because organism y feed on herbivore
Explanation: using process of elimination this one makes sense and i got it right on the test.
how does sequencing genes provide evidence for evolution
Answer:
how does sequencing Gene's brain function as an instrument for me and my
As the ability to sequence the nucleotides making up DNA has improved, it also has become possible to use genes to reconstruct the evolutionary history of organisms. Because of mutations, the sequence of nucleotides in a gene gradually changes over time.
What is the definition of malignant?
Answer:
Malignant cells can invade and destroy nearby tissue and spread to other parts of the body.
Answer:
(of a disease) very virulent or infectious. a
Explanation:
(of a disease) very virulent or infectious.
Does the stratosphere have a high or low temperature also what is the temperature
Answer:
Explanation:
The stratosphere is the second-lowest layer of Earth’s atmosphere, starting at 10 kilometers above the surface. Unlike the troposphere, the temperature in the stratosphere increases with altitude. At the top, the temperature is around 32°F – almost 100 degrees higher than the bottom.
Jenna is helping her family decide which water filtration technology they should install in their house. Which of these provides the correct reasoning for method Jenna and her family should choose?
A.reverse osmosis because it requires no filters, and removes all contaminants such as bacteria and chemicals
B.ultraviolet radiation because it requires no filters, and removes all contaminants such as bacteria and chemicals
C.ultraviolet radiation because it requires no energy, and removes all contaminants such as bacteria and chemicals
D.reverse osmosis because it requires low maintenance, and removes all contaminants such as bacteria and chemicals
Answer:
B
Explanation:
The water filtration technology they should install in their house is reverse osmosis because it requires low maintenance, and removes all contaminants such as bacteria and chemicals.
Reverse Osmosis Systems have a totally excessive effectiveness in doing away with bacteria (for example, Campylobacter, Salmonella, Shigella, E. coli); Reverse Osmosis Systems have a totally excessive effectiveness in doing away with viruses (for example, Enteric, Hepatitis A, Norovirus, Rotavirus).
How does reverse osmosis work ?Reverse osmosis works through shifting water via a semipermeable membrane to filter and flush away any contaminants. Reverse osmosis structures are quality appropriate for home use and offer a surprisingly green manner to purify your ingesting water at home.
Thus it is well explained.
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How do animals add carbon dioxide to the atmosphere?
A. breathing
B. evaporation
C. cellular respiration
D. transpiration
equation of cellular respiration
C6H12O6+6O2--->6CO2+6H20
from this equation we can see that co2 is a product so the answer is C
PLEASE HELP IM TIMED.
Both an electric motor and a generator spend an electromagnet inside of a permanent magnet. However, the input and output energies are different. Explain the differences.
Answer:
An electric motor converts electricity into mechanical energy, providing a power source for machinery. A generator does the opposite of this, converting mechanical energy into electricity.
Explanation:
Why is unlined landfill a point source pollution
PLEASE HELP
Answer:
Septic systems is the BEST example of a non-point source of water
pollution.
Explanation:
Residue from inappropriately oversaw building destinations, harvest and woods terrains, and disintegrating streambanks. Salt from water system practices and corrosive seepage from surrendered mines. Microbes and supplements from domesticated animals, pet squanders and broken septic frameworks. Residue from inappropriately oversaw building locales, harvest and woods grounds, and disintegrating streambanks.
For separate ecosystems to be classified as the same type of biome they must
Answer: It should be C.
Explanation:
For separate ecosystems to be classified as the same type of biome, they must —
x have deciduous forests .
x be located along the equator .
√ have similar organisms and climates .
x be at least one hundred square meters in area.
For a biome to be of the same type they have to possess features such as
same organisms and climates.
A biome is a large area which is characterized by different features such
as vegetation, soil, climate, and wildlife. A biome being of the same type
must have the same features listed above.
There is the marine and grassland biomes which consists of the same
organisms and climatic conditions.
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Marshes, deltas, beaches, and barrier islands are created when sediment is dropped off by agents like waves, wind, and rivers. What process is responsible for the formation of these environments?
Weathering
Deposition
Erosion
Stratification
Answer:
Deposition
Explanation:
Deposition is the geological process by which material is added to a landform or land mass. Fluids such as wind and water, as well as sediment flowing via gravity, transport previously eroded sediment, which, at the loss of enough kinetic energy in the fluid, is deposited, building up layers of sediment.
PLEASE I NEED HELP NOW!! this is from a Gizmo//Mutation and Selection, Compare the fitness to percentages to the insect colors. How does fitness relate to the color of the insects
Based on the data, what is the probability a randomly chosen cell will be observed undergoing cell division? You may use the calculator. A.15% A. 15% B.18% B. 18% C.30% C. 30% D.85% D. 85%
Answer:
A
Explanation:
The active state of cell division covers the prophase, metaphase, anaphase, and telophase. The total number of observed cells that were undergoing cell division can, thus, be calculated by adding the number of cells in each stage of the cell division.
Total number of cell in division = 20+4+2+4
= 30
Probability that a randomly chose cell will be undergoing cell division = number of cells in division/total number of cells
= 30/200
= 0.15 or 15%
The correct option is, therefore, A.
Which statements best describe shared characteristics? Select two options.
a. Shared characteristics always exist in the common ancestor and in the modern organism
b. Shared characteristics never exist in the common ancestor or in the modern organism.
c. The more characteristics organisms share, the more closely related they are.
d. The fewer characteristics organisms share, the more closely related they are.
e. Shared characteristics can exist among organisms that belong to different species.
f. Shared characteristics only exist among organisms that belong to the same species.
What is the starting point for an argument?
a
Counterclaim
b
Bridge
c
Claim
d
Support
Answer:
i think its c
Explanation:
Answer:
c
Explanation:
claim
What is the name of length of time needed for us to pay back our oxygen debt?
O2 oxygen debt time may vary from individual to individual, but the average is 2 minutes for normal individuals.
What is O2 Oxygen Debt?Oxygen debt is a physiological phenomenon that occurs when someone consumes oxygen at a faster rate than it can be replaced, leading to an oxygen deficit that causes increased respiration as the body tries to replace used oxygen.
With this information, we can conclude that the time of o2 oxygen debt can vary from individual to individual, but the average is 2 minutes for normal individuals.
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how are the genetics of people and the corona different?
Answer:
biology
Explanation:
A cross between a white rooster and a black hen results in 100% blue offspring. When two of these
blue offspring are mated, the probable phenotypic ratio seen in their offspring would be
A) 1:1:2 B) 3:1 C) 1:2:1
D) 2:1:1
Answer:
c
Explanation:
they each contain a gene from their father, their mother, and themselves, since they are both blue there will be 2 blue genes, 1 black and 1 white
A cross between a white rooster and a black hen results in 100% blue offspring, so when two of these blue offspring are mated, the result is 1:2:1, which is option c, as 1 is white, 2 are blue, and 1 is black.
What is the significance of the genetic crossing?Due to incomplete dominance, genetic crossing occurs between two animals, such as one black hen and one white rooster, and the offspring are blue. When these two heterozygous blue birds cross, a total of four hens and roosters offspring are formed: 1 is black, 1 is white, and 2 are blue and this genetic crossing can also increase genetic diversity within a population due to meiosis.
Hence, a cross between a white rooster and a black hen results in 100% blue offspring, so when two of these blue offspring are mated, the result is 1:2:1, which is option c, as 1 is white, 2 are blue, and 1 is black.
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how much force would is required to stop a 1200kg car in 2 seconds if the car is traveling at 22 m/s
The force required to stop the car is 13200 N.
We have car of mass 1200kg.
We have to determine how much force is required to stop this car in 2 seconds.
What is Force ?
Force is defined as the product of mass and acceleration. Mathematically-
F = ma
According to the question -
Using first equation of motion -
v = u + at
0 = 22 + a x 2
-22 = 2a
a = -11 m/s².
The force required to stop the car = M x a = 1200 x |a| = 1200 x 11 =
13200 N
Hence, the force required to stop the car is 13200 N.
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In 5-7 sentences, briefly define evolution and natural selection, then analyze the differences between the two concepts.
Answer:
evolution is change over a period of time
how do the geocentric and heliocentric models of the solar system differs?
Answer:
The main difference is that the geocentric has the Earth at the center, and the heliocentric has the sun at the center.
Answer:
The geocentric has the Earth at the center while the heliocentric has the sun at the center.
Explanation:
:)
Myosin is plentiful in muscle cells, but is not found at all in lens cells. Lens cells contain large amounts of crystallins, which are not found in muscle cells. Why do some proteins appear in one type of cell but not in another?
What do tissues working together form?
Organisms
Organ systems
Organs
Cells
Answer:
Groups of tissues working together form organs, which work together in systems. specialized cells, they can only do so much on their own. Tissues working together overcome this limitation to form organs. An organ is made up of different tissues working together to perform a specific task.
Explanation:
Hope this helps!
Matthias Schleiden and Theodor Schwann looked at plant and animal cells. Schwann wrote the first part of what is known as the cell theory. Which statement did he write? A. All organisms are composed of one or more cells. All cells come from existing cells. B. All organisms are composed of one or more cells. The cell is the basic unit of life in all living things. C. All cells come from existing cells. The cell is the basic unit of life in all living things. D. All cells are microscopic in size. All cells come from existing cells.
Answer:
B. all organisms are composed of one or more cells. the cell is the basic unit of life in all living things.
Explanation:
This is the first part of the cell theory.^-^
.
One of the main functions of the semi-permeable cell membrane is to maintain homeostasis for the cell. Semi-permeable means that only some molecules are allowed to cross the membrane and others are not.
What molecule enables large molecules to cross the membrane?
Answer:
Due to the semi-permeability of cell membrane, the molecules that allow large molecules to cross the membrane are proteins, specifically membrane integral proteins.
Explanation:
Membrane integral proteins are protein molecules that are part of the cell membrane, pass through it and cannot be separated from it. These molecules allow the passage of polar molecules and large molecules.
The channels and transporters are structures formed by integral proteins, which facilitate the passive and active transport of macromolecules, respectively.
The cell membrane is a lipid bilayer whose hydrophobic nature allows the passage of some substances and prevents the passage of others, which can pass through the membrane by using channels and protein transporters.
Fermentation is a process where
organic compounds are broken down in the presence of oxygen
most of the ATP is made in cellular respiration
sugars are created in photosynthesis
organic compounds are broken down in the absence of oxygen
Answer:
organic compounds are broken down in the absence of oxygen
Explanation
for example alcoholic fermentation done by Saccharomyces Cerevisae
C6H12O6-->2CO2+2C2H5OH
How are the reactions of photosynthesis and Cellular respiration interconnected?
The reactions of photosynthesis and cellular respiration are interconnected, as the glucose produced by photosynthesis is consumed by animals in cellular respiration.
What is cellular respiration?Cellular respiration is a process of breaking down of food material into simpler forms in releasing energy.
Because oxygen and glucose are produced during photosynthesis from carbon dioxide and water, while water and carbon are produced during cellular respiration, the reactants of photosynthesis and cellular respiration are linked.
The ATP, which is energy transferred as a result of that process, results in the transmission of both water and carbon as byproducts.
Therefore, as the glucose created by sunlight is used by animals during cellular respiration, the reactions of photosynthesis and cellular respiration are interrelated.
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A. How do the oxygen (O2) and carbon dioxide (CO2) levels change over time?
Answer: How does CO2 level affect oxygen production? increasing CO2 production increases oxygen production. ... Greater flow of oxygen corresponds to a higher rate of photosynthesis.
Explanation:
Oxygen ( O₂ ) and carbon dioxide ( CO₂ ) levels change over time ;
Due to man-made and natural processes
Natural processes such as Photosynthesis and the storage of carbon in the biosphere and hydrosphere. cause a varying change in the levels of CO₂ present in the atmosphere because during photosynthesis CO₂ is used by green plants while the amount of stored carbon in the hydrosphere affects the level of available carbon in the atmosphere in general.
Man-made processes which includes the burning of fossil fuels and the release of CFC's into the atmosphere through gas flaring also the indiscriminate burning of bushes contribute immensely to the levels of carbon found in the atmosphere.
Hence we can conclude that Oxygen ( O₂ ) and carbon dioxide ( CO₂ ) levels change over time ; Due to man made and natural processes
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The deforestation of rainforests in South America is an example of what specific type of
threat to biodiversity?
Answer:
habit destruction
Explanation:
deforestation gets rid of homes to the animals.