Answer:
b. You should prolly know this tho lol
Explanation:
Help please! Its due in a few minutes!!
Mr. Rogers wanted to study the affect of different types of music would have on students ability to complete the IA. What is his dependent variable? What Is his independent variable ?
A. classrooms
B. types of music
C. IA scores
D. students
I NEED HELP ASAPPPPPPPPPPPPPPPP
Answer:
i wold think it is C
Explanation:
Answer:
c i want brainiest
Explanation:
Help me with an easy question worth 25 points
What makes a material dense if we are calculating the Speed of light in thousand miles per second.
Answer: Velocity
Explanation:
The density of a material affects the speed that a wave will be transmitted through it. In general, the denser the transparent material, the more slowly light travels through it. Glass is denser than air, so a light ray passing from air into glass slows down.
Answer:
C is most dense i think lol
Explanation:
Does an acidic solution contain hydroxide ions? Explain your answer.
Answer:
Yes but there are more hydrogen ions than hydroxide ions.
An acidic solution contains a large concentration of hydronium ions than hydroxide ions. Yes, an acidic solution contains hydroxide ions.
What are hydroxide ions?Hydroxide ions are produced from the ionization of water molecules carrying the positive charge on hydrogen.
A solution contains both the hydroxide OH⁻ and hydronium ions H⁺.
In order to make a solution acidic, a solution must contain more hydronium ions compared to hydroxide ions.
Yes, an acidic solution contains hydroxide ions.
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some students observe four different lab investigations. The students record their observations in a table.
Investigation
Observations
1
A beaker of water is
heated on a hot plate. Bubbles form in
the water, and steam is given off.
2
Oil is added to a beaker of water. Oil forms a layer on top
of the water
3
Sand and iron filings are mixed in a beaker. A magnet is
then used to separate the iron filings from the sand.
4
A piece of chalk is placed in a beaker of vinegar Bubbles
form as a gas is given off.
Which investigation most likely involved a chemical reaction?
Answer:
Number 4 is an example of a chemical reaction
Explanation:
heThe chalk is reacting with the vingear which is creating a new substance. The new substance is the gas that the reaction gives off.
Describe the concentration of hydronium ions and hydroxide ions when a base is added slowly to a white vinegar solution. The pH of white vinegar is 3.1.
Answer: as you add the base it added some PH. The Ph lever of white vinegar is2.4 - 3.4
The concentration of hydronium ion will decrease, and hydroxide ion will increase when a base is added to a white vinegar.
What is pH?pH is the measure scale of how acidic and basic the solution is.
The acid has low pH value and a base has high pH.
When a solution is basic, more hydroxide ion are present and when a solution is acidic, more hydronium ion are present.
Neutral solution will have equal amount of H+ ion and OH- ions.
A buffer neutralizes the pH of any solution.
Thus, the concentration of hydroxide ion will increase and the concentration of hydronium ion will decrease when a base is added to a white vinegar.
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Describe the concentration of hydronium ions and hydroxide ions when a base is added slowly to a white vinegar solution. The pH of white vinegar is 3.1.
Answer: as you add the base it added some PH. The Ph lever of white vinager is2.4 - 3.4
Helppppp please and I will give you a Brainliest
Answer:
1. Interpret Laws
3. Federal? I think...
5. Appointed by the president
6. Judicial review
8. Civil
9. Judicial review
11. The constitution does not allow it
Explanation:
Answer:
1.) enforce laws
2.)State court system
5.)D
6.)C
8.)civil
9.)jurisdiction
11.)A
Explanation:
how many joules would it take to raise 2 grams of AL 1 degree?
Explanation:
Air has a heat capacity of about 700 Joules per kg per °K and a density of just 1.2 kg/m3, so its initial energy would be 700 x 1 x 1.2 x 293 = 246,120 Joules
If a trait varies greatly within a pair of identical twins, it is most likely caused by what?
A.Genetics
B. Environment
C. Nutrition
D.inherited
True or False: Genetics and environment both are responsible for making you who you are.
A.true
B.false
Answer:
1. B. environment
2. A. true
Explanation:
If a trait varies greatly within a pair of identical twins, it is most likely influenced by the environment. Genetics and the environment both are responsible for human development.
What is Genetics?Genetics can be described as the study of genetic variation, genes, and heredity in organisms. It is a branch in biology because heredity is vital to organisms' evolution.
Trait and molecular inheritance mechanisms of genes are still primary principles of genetics and have expanded to study the function and behavior of genes.
Genetics has a number of subfields, including molecular genetics, epigenetics, and population genetics. Living organisms are studied within the broad field span the domains of life such as bacteria, archaea, and eukarya.
Genetic processes work with an organism's environment and experiences to influence behavior and development referred to as nature versus nurture. The extracellular or intracellular environment of a living organism can switch gene transcription on or off.
Therefore, the given statement is true.
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√225/√25 = ?? hurry please I'm stuck on it
Answer:
√225/√25 =3
The answer is 3
Explanation:
Answer:
The answer is 3
Explanation:
will give branliest
How could you possibly see the world in slow-motion
Answer: take out your phone, record things in slow motion mode, and watch it after?
or just try imagining it.
or tell everyone to walk slowly for scientific purposes
yeah thats all i have
Explanation:
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A disease caused by the inflammation of mucus membranes inside the bronchial tubes. There are more than 3 million U.S. cases a year.
Inflammation can have causes that aren't due to underlying disease. Examples include injuries such as sprains and strains, overuse, or insect bites.
ANSWER ALL OF THEM NOT PICKING
a. You have a 10 volt parallel circuit, with 2 resistors on it. What is the voltage across the first resistor? Across the second?
b. You have the same two resistors on a 10 volt series circuit. Will the voltage going into the second resistor be more, less, or the same as that going into the first resistor? Exact numbers aren’t needed!
c. You have a series circuit with a current of 6 amps and three resistors on it, with resistances of 10 ohms, 5 ohms, and 6 ohms, respectively. What is the voltage of this circuit? Show your calculation.
HURRY PLEASE
What forces act upon a maglev train? Select the THREE (3) that apply.
air resistance
air resistance
friction with the ground/track
friction with the ground/track
magnetic fields that attract and repel
magnetic fields that attract and repel
gravity
gravity
applied forces from other vehicles
Magnetic fields that attract and repel, gravity, and friction with the ground/track are the forces that act upon a meglev train.
What is maglev train?
A maglev train is a train that is propelled by the effect of magnets on both the train and the tracks.
Force that act upon maglev trainGravityFriction Magnetic fieldsThus, we can conclude that, magnetic fields that attract and repel, gravity, and friction with the ground/track are the forces that act upon a meglev train.
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Giving brainliest and thanks <3
:::::::::::::::
Answer:
B.
Explanation:
The closer the molecules are the easier they are to excite (heat up). So solids would be easiest to heat up since their molecules are so tightly packed.
A pea plant has the genotype Bb. What words describe this genotype?
why did Mendel become decide to become a teacher?
Answer:
he decided to become a teacher because he studied expertise and wanted to teach about early life
Explanation:
Answer:
While Charles Darwin's "The Origin of Species" was published in November 1859, a monastic priest and teacher named Gregor Mendel was in his third year experimenting with pea plants. His final results demonstrated principles of heredity that would eventually evolve into the new disciplines of genetics and molecular biology. His work not only helped solve the mysteries of diseases such as cystic fibrosis, Tay-Sachs disease, sickle cell disease, and hemophilia, it also and lay the foundation for the Human Genome Project.
Explanation:
Which of the following occurs when there is a chemical reaction? (Mark all that apply.)
a. the reactants don't change
b. bonds between atoms break
c. atoms rearrange
d. new bonds form
e. new substances form
f. there is no product
How does resource extraction affect local and national economies?
Answer:
The direct channels by which extraction can affect the economy are of particular interest. The development of mines or oil and gas fields can result in significant shocks to a regional economy, generating jobs and drawing in capital from other regions and countries.
Explanation:
Please help me ASAP!!!
Answer: Patrick was so sure he was a thief because why would you knock if it was your own room you would open the door. And he didn’t have a key to open the door.
Hope this helped
Explanation:
O 9 ? A B с The models above show particle arrangement. The following statements compare and contrast the models. 1. The substance in diagram A has the highest density. 2. The substance in diagram A has the highest energy. 3. The substances in diagrams B and C would flow freely. 4. The substance in diagram C has the lowest temperature. 5. The substances must undergo a chemical change to transform into a different model.
Answer: 2 The substance in diagram A has the highest energy
Explanation:
Answer:
On my test, I have to choose which of the 5 statements are correct. 1 and 3 are definitely correct. 5 is NOT correct as this is matter we are talking about. When matter changes that is a physical change and NOT a chemical change.
1 & 3 are your answers
( 15 points to whoever replies quickest no links pls ) a farmer has used a fertiliser containing ammonium nitrate, potassium nitrate and ammonium sulphate on his fields but some may have leached into a nearby river. If a sample of river water was tested, what colour would the flame be if there was fertiliser contamination
If water of the river was tested there would be orange color flame.
What is fertilizer?Millions of tons of air, natural gas, and mined ores are transformed into plant nutrition products based on the three crucial nutrients nitrogen, phosphorus, and potassium by the fertilizer industry.
The process begins by combining nitrogen from the air with hydrogen from natural gas at high temperature and pressure to produce ammonia, which is then used to make nitrogen-based fertilizers, the largest product category. Natural gas is used as a raw material for about 60% of the time, while the remaining 40% is used to power the synthesis process.
The nitric acid created from the ammonia is combined with it to create nitrate fertilizers like ammonium nitrate (AN). Urea can also be made by combining ammonia with liquid carbon dioxide. To create UAN (urea ammonium nitrate) solution, both of these products can be combined with water.
Therefore, If water of the river was tested there would be orange color flame.
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Define the following terms
Uniformitarianism
&
trace fossil
Answer:
Uniformitarianism- A theory that geologic process that occur today are similar to those that have occurred in the past
Trace Fossil- A fossil of a foot or trail or other travel of an animal rather than of the animal itself
What drives the movement of Earth's tectonic plates?
A the movement of air currents pushing on the plates
OB. the convection of magma under the plates pulling them
Cthe movement of Earth on its axis pulling on the plates
Dthe convection of ocean currents above the plates pushing them
Answer:
B or D
Explanation:
Explain: How does pH vary with hydronium ion and hydroxide ion concentrations in water?
Answer:
pH level varies in water for hydronium and hydroxyl ions. pH level is directly proportional to oo hydroxyl ions where as inversely proportional to the hydronium ions.
Explanation:
Answer:
pH is measured with the pH scale which is also known as universal indicator which is the colour combination of different acid base indicators it will indicate the pH level by different colour coding.
pH level varies in water for hydronium and hydroxyl ions.
pH level is directly proportional to oo hydroxyl ions where as inversely proportional to the hydronium ions.
when the concentration of hydroxyl ion increases PH value also increases but when the concentration of hydronium ion increases PH value decreases.
we can say that in this way PH value is related to hydronium and hydroxyl ions in water.
Explanation:
Ill give brainliest and a 5 star review for the best answer Do you think your town or neighborhood has an ecosystem? If you don’t think so, explain why not. If you do think so, what are the producers, consumers, and decomposers in the ecosystem? What roles do humans play in this ecosystem?
Answer: I do think that neighborhoods are an ecosystem
Explanation: a ecosystem contains living and non-living things, some examples are the people,plants,and pets are living organisms and the houses and the street lamps are non living. Therefore making a neighborhood a ecosystem
What determines a single inherited trait of an indiviual ?
a. one pair of many pairs of genes
b. a disrupted cell cycle
c. one half of the replicated DNA stand
d. amino acids joined to form proteins
Answer:
The answer is A.
The pair of genes from the parent determines what trait the offspring inherits.
Explain why there would be many more plants in an ecosystem than ape-x consumers. I NEED THIS PLS
Answer:
Biomass decreases with each trophic level. There is always more biomass in lower trophic levels than in higher ones. Because biomass decreases with each trophic level, there are always more autotrophs than herbivores in a healthy food web.
Explanation:
there's your answer.