Concentration is the amount of a substance in a given volume.
True or False
Answer:
True?
Explanation:
Answer:
i think its true but im not to sure
Explanation:
The concentration of a substance is the quantity of solute present in a given quantity of solution. Concentrations are usually expressed in terms of molarity, defined as the number of moles of solute in 1 L of solution.
Which of the following is an example of chemical weathering?
a Frost wedging
b Animal activity
c Plant growth
d Acid rain
Answer:
d acid rain
Explanation:
plz mark brainlyst
Help Please! Thanks!
Answer:
a
Explanation:
it would be the most reasonable
How do weathering and erosion differ?
a Weathering breaks down rocks; erosion moves them.
b Weathering has to do with air; erosion has to do with rocks.
c Weathering occurs only in winter; erosion occurs year-round.
d Weathering can be chemical or physical; erosion is only chemical.
Answer:
cl0wngvtz is correct.
Explanation:
Their answer is correct. :)
Which of the following is an example of physical weathering?
a frost wedging
b Acid rain
c Oxidation
d Carbonic acid
Guillermo was finding it difficult to walk up the steps to his family’s apartment. His doctor thinks that his cells might not be getting enough oxygen or glucose Which body systems should the doctor test in order to find out whether Guillermo’s cells are getting enough oxygen and glucose and why? (Sentence starter: The body systems Guillermo should have tested are...
Answer: circulatory and respiratory systems.
Explanation:
Dr. Grey performed an experiment to test how temperature affects activity levels in mice. She put one group of mice in a cold environment and another group of mice in a hot environment. Everything else about the two environments was the same, including the type and amount of food and water. She allowed the experiment to last for a few generations of mice and tested the activity levels of the different groups. There was no change in the activity levels of the mice, but she noticed that the mice in the cold environment had much darker, thicker fur than the mice in the hot environment. What scientific question could she ask based on her results? A. Does temperature have an effect on fur color and thickness in mice? B. Do the mice in the cold environment run faster than the mice in the hot environment? C. Which group of mice is the most attractive? D. Does food type have an effect on fur color and thickness in mice?
In two to four sentences, explain how you ranked the plants from most desirable to least desirable. Be sure to cite evidence from the data to support your rankings.
Answer:My plant rankings could protect the dunes because my plant rankings show most desirable plants and least desirable plants. Many people could use my plant rankings for saving dunes because when you look at the ranking and if you are trying to save a dune you would use the most desirable plants out of the seven plants.
Explanation:
Plant rankings, that include the best and least desired plants, might help to protect the dunes.
What do you mean by Dunes?A dune is a sand mound that the wind has created, typically near a beach or in a desert.
When wind drives sand into a protected region behind an obstruction, dunes are created. Sand particles build up, creating dunes. There is a slip face and a windward side to every dun.
Since you would use the top-ranked plants from the list of seven if you were attempting to save a dune, many people may benefit from using my plant rankings.
Sand that is carried inland and dumped above the high tide mark forms coastal sand dunes.
This is then contained by seaside objects, allowing specialised dune-building grasses to develop and ascend through further layers of sand.
To learn more about Dunes, refer to the below link:
https://brainly.com/question/13717067
# SPJ2
i need help with this pls answer this asap
Irrigation is a method used to water farm land. Identify two effects irrigation has on the water cycle and environment. A Irrigation can decrease the Earth's temperature, B. Irrigation can produce run-off that pollutes streams and rivers with fertilizers, C. Irrigation can cause erosion and take nutrients from the soil or D. Irrigation can increase global winds.
Please help and explain well because I really don't understand.
Answer:
A and C
Explanation:
Determine the number of atoms in the following chemical formulas. Make sure you list the elements, how many atoms of each element, and how many total atoms. Numbers 1 and 6 have been completed as examples.
8NaCl = 8+8=16 (To find the total number of atoms add the total number of atoms)
Na=1x8=8 (remember to multiply the subscript by the coefficient)
Cl=1x8=8
H₂SO₄ = _______
H=
S=
O=
4KNO₃ = _______
K=
N=
O=
CaCl₂ = _______
Ca=
Cl=
3C₂H₆ = _______
C=
H=
Israel observed a bolt of lightning during a storm. Which form of energy does a bolt of lightning produce?
A. light C. nuclear
B. mechanical D. potential
Answer:
A. Light
Explanation:
LIGHTning
U answered your own question
If energy is released or absorbed during a chemical reaction, where is the energy going?
Answer:
reactants give energy and products, when the energy is absorbed to break bonds the energy will be released
Explanation:
Answer:
Due to the absorption of energy when chemical bonds are broken, and the release of energy when chemical bonds are formed, chemical reactions almost always involve a change in energy between products and reactants.
Explanation:
Calculate the estimated density of each ball. Use the formula
D = m/V
where D is the density, m is the mass, and V is the volume. Record your calculations in Table A of your Student Guide.
Given that the density of water is 1.0 g/cm3, make a prediction about whether each ball will float in water. Record your prediction in Table A.
What is the estimated density of the table tennis ball? Record your answer to the nearest hundredth.
_______g/cm3
What is the estimated density of the golf ball? Record your answer to the nearest hundreth.
________ g/cm3
Answer: table tennis ball: 0.07
golf ball: 1.37
Explanation:
must contain 2 decimal points.
Guillermo was finding it difficult to walk up the steps to his family’s apartment. His doctor thinks that his cells might not be getting enough oxygen or glucose Why does having low levels of glucose or oxygen in his cells make it difficult for Guillermo to walk up steps? (Sentence starter: It is difficult for Guillermo to walk up steps because...
Answer:
Without enough oxygenated blood cells, his brain isn't getting enough oxygen, making it harder for his brain to process movement.
Explanation:
When you don't have enough oxygenated blood cells, you aren't getting enough oxygen to your brain, making it harder for you brain too process movement.
what are at least 6 compounds of potassium ?
Answer:
nitrate, carbonate, chloride, bromide, cyanide, and sulfate.
Explanation:
Answer:
Chloride CL, Potassium hydroxide KOH, Potassium chloride KCI, Potassium nitrate KNO3, Potassium carbonate K2CO3, Sulfate SO²⁻ ₄
Explanation:
The diagram below shows part of the rock cycle. (4 points)
Rock cycle with a volcanic eruption at the top. Moving counterclockwise, there is an arrow pointing to Rock B. From Rock B there is an arrow labeled sediment and compaction pointing to Rock C. From Rock C there is an arrow labeled heat and pressure pointing to Rock A. From Rock A there is an arrow labeled magma pointing back to volcanic eruption.
Which type of rock does B represent?
Answer Choices
1)Igneous rock
2)Metamorphic rock
3)Rock formed by compaction
4)Rock formed by heat and pressure
Answer:
1
Explanation:
Answer:
1. heat and pressure
sedimentary to metamorphic is heat and pressure
2. compaction and cementation
sediment to sedimentary rock is compaction and cementation
3. weathering and erosion
igneous rock to sediment is weathering and erosion
Which material absorbs the MOST solar radiation? a.Sand b.Grassy Field C.Fresh snow d.Forest
Forest absorbs most of the solar radiation. Therefore, option (d) is correct.
What are solar radiations?Solar radiation can be described as electromagnetic waves coming from the sun and comes in three major types: visible light, infrared light, and ultraviolet light.
The electromagnetic spectrum has seven different types of light, listed from lowest frequency to highest: radio waves, microwaves, IR light, visible light, UV light, X-rays, and gamma rays. Solar radiation is light from the sun that can be categorized by its frequency and wavelength.
Solar irradiance can be described as the power per unit area received from the Sun in the form of radiation in the wavelength range and is measured in watts per square meter.
This may be measured in space or at the surface of the earth after atmospheric absorption and scattering. The forests have plants and trees which absorb the most solar radiation.
Learn more about solar radiation, here:
https://brainly.com/question/307832
#SPJ2
I'm in need of help! Thanks.
Which statement describes the condition in which diamonds form?
A. They grow underground, in most regions of Earth
B. They form as water evaporates on the shore any body of water
C. They form deep underground, in certain areas that are under a great deal of pressure
D. They form as water evaporates on the shores of very salty bodies of water
Which is not needed for a hurricane to form?
Answer:
strong cold front
Explanation:
Based on the results of your investigation,make a claim about how changing the size or shape of an object affects its density?
Answer:
It can affect it by taking away mass and volume. Mass and Volume are the two factors that calculate and make up density
Explanation:
Mass/Volume =Density
If you were to change the mass or volume by changing the size or shape of an object, then this would affect the density.
TRUE OR FALSE 3 QUESTION If the statement is true, write true. If the statement is false, change the capitle word to make the statement true.
1) Cell growth and production of new organelles and enzymes are
characteristics of PROPHASE.
2) It would take FIVE cell divisions for one original cell to produce 128 new cells.
3) he two rod-like parts that make up a chromosome are called
CHROMATIDS.
1) This statement is False.
2) This statement is False.
3) This statement is True.
Cell growth and production of new organelles and enzymes are characteristics of Interphase, which is the resting phase between 2 successive cell divisions. Prophase is the first stage of mitotic division.
One original cell will take seven cell divisions to produce 128 new cells. Cell division is the process by which one original cell divides into two daughter cells.
The rod-like parts that makeup chromosomes are called chromatids. Each chromatid contains a double helix of DNA.
To learn more about Mitotic Division,
https://brainly.com/question/28754554
To learn more about Chromatids,
https://brainly.com/question/14412812
What is a doldrum?
a. a calm area of sinking air
b. when wind blows East to West
c. a calm area of rising air
D. When wind blows West to East
Answer:
A
Explanation:
Which wave has a wavelength that is most likely seen as red light?
Answer:
D
Explanation:
Red wavelenghs are usually around 620-750 nm
Answer:
D
Explanation:
ape x
Please help me I will give you the brain thing and extra points. image below part
Answer:
The answer is D, when H2S gas is bubbled into a lead acetate soulution, a precipitate forms
Explanation:
This is because a physical change is when it changes but doesn't turn into a new substance. A chemical change is when it transforms into a completly new substance. Hope this helps!!! :)
5. How does skin keep germs from getting in your body? (1 point) Cells have many layers to protect us.
6. How do the students enter the lower layers of Arnold’s and Pheobe’s skin? (1 point)
7. Your body is made of living cells that _________ and ________________. (2 points)
8. In which organ do the students discover that Sea Weedies are actually orange in color? (1 point)
9. The ________________ is the organ that absorbs all the good things and nutrients from the food we wat, and transports it to the blood stream. (1 point)
10. The __________, also made of cells, move food into the ________________________. (1 point)
11. What are some of the different types of body cells that Ms. Frizzle lists (at least 3)? (3 points)
12. As Ms. Frizzle says, “We are what we ____!” What does she mean by this phrase? (2 points)
13. Roughly how long would it take for new skin cells to regenerate and grow from the bottom layers, then reach the surface of the skin? (1 point)
Answer:
5. By having many layers of skin cells, you skin acts as a protective barrier to prevent unnecessary items from entering your body. It is your body’s first line of defense!
6. Through a hair follicle
7. grow and divide
8. inside the stomach
9. small intenstine
Explanation:
Zamir and Talia raced through a maze. Zamir walked 2 m north, 2 m east, 4 m south, 2 m east, 4 m north, 2 m east, 3 m south, 4 m east and 4 m north. Talia walked 2 m north, 6 m east, 3 m south, 4 m east, and 4 m north. Compare their displacements: Zamir’s displacement is Talia’s displacement.
add then compare the two
Answer:
equal to
Explanation:
There are many ways that you can tell whether a chemical change has occurred. Which of the following is NOT a sign of chemical change?
-presence of bubbles
-liquid boiling
-change in color
-a release of an odor
Answer:
liquid bolling
Explanation:
because it just using heat.
If a solution contains all the solute it can hold at a given temperature, it is said to be ________________
A.) dilute
B.)saturated