Answer:
Mass
Explanation:
What happens to the atoms that make up hydrogen fuel as it burns?
Answer:
When hydrogen fuel burns, its atoms combine with oxygen atoms in the air, which creates a chemical reaction that releases energy in the form of heat and light. The hydrogen atoms lose their outermost electrons, becoming positively charged ions (protons). These ions combine with the oxygen atoms to form water molecules (H2O), which evaporate into the air as steam. Therefore, the atoms that make up hydrogen fuel ultimately become part of water molecules during the process of combustion.
Explanation:
Which of the following problems would be a direct result of humans building along the ocean shore zone?
A. the erosion of the sand and soil from the shoreline
B. sand dunes and vegetation being disturbed
C. the movement of sand from one place to another
D. sand being washed away over long periods
Answer:
I think it is B.
Explanation:
The erosion of the sand and soil from the shoreline would be a direct result of humans building along the ocean shore zone. When humans build structures along the shoreline. This can lead to increased erosion of the shoreline and loss of the beach.
Building along the ocean shore zone can have several impacts on the natural environment. One of the direct impacts is the erosion of the sand and soil from the shoreline. This occurs because construction can disrupt the natural processes that maintain the beach, such as the movement of sand and the protection provided by vegetation.
For example, building seawalls or other structures can prevent the natural movement of sand and sediment along the beach. This can lead to erosion of the shoreline, as the sand is no longer able to accumulate in areas where it is needed to protect the shoreline. These plants help to hold the sand in place and protect the beach from erosion.
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how are thing measured using the metric system
Answer: The metric system is a system of measurement that uses the meter, liter, and gram as base units of length (distance), capacity (volume), and weight (mass) respectively. To measure smaller or larger quantities, we use units derived from the metric units.
help it is due tomorrow
Answer:
2 H atoms
1 Mg
5 total atoms
Explanation:
pls help por favor i dont understand
Answer:
It's C!
Explanation:
when the amplitude was doubled the energy went up 4x
PLEASE HELP
The chocolate chip cookie/ plum pudding model demonstrates that
Thomson discovered what about the atom?
Electrons were throughout the atom
The nucleus of the atom was positive
Protons and electrons had the same charge
Neutrons and protons had the same charge
Answer:
B??? sorry if im wrong
Explanation:
Consider the "Macro" part of Virtual lab to determine if each of the following statements is True or False *
Salt conducts electricity true false
Sucrose conducts electricity true false
Answer:
Salt does not conduct electricity because it is an insulator.
And the other is false
*I’m confused? Pls help, it’s due tmr*
Modeling Tool: Two Samples at the Atomic Scale
Goal: Create a model that represents a repeating group of atoms that could make up sample 2.
Answer:
PENTANE
Explanation:
Which of the following is NOT a scale used to determine an earthquake's strength?
Mercalli Scale
Earthquake Scale
Richter Scale
Moment Magnitude Scale
Answer:
The third one. (Richter Scale)
Which best explains how rotation affects the colors we see in the sky at dawn and dusk?
A. At dawn and dusk the rotation of Earth slows down so the light from the increased sunlight creates colors.
B. At dawn and dusk, Earth has rotated closer to the Sun, so the heat creates the colors in the sky.
C. At dawn and dusk, sunlight is closer to Earth’s curved surface, refracting in the atmosphere, creating colors.
D. As dawn and dusk, the light from the Sun is fading and phases through all the colors of a prism in a cycle.
Option (c) best describes about the rotation that, how it affects the colors we see in the sky at dawn and dusk.
What is dawn and dusk?'Dawn' is the early morning time or sunrise time and 'Dusk' is the twilight time or sunset time.
When earth is rotating at its own place, so at the dawn and dusk time sun is near to the horizon line and distance between the earths surface and sun is less as compared to the day time. And at that time red light travels much easily to the earth side due to long wavelength and blue color travels at the day time when distance is more. Due to scattering and refraction of light we are able to see colors.
Hence, at dawn and dusk, sunlight is closer to Earth’s curved surface, refracting in the atmosphere, creating colors.
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Which option is an example of a chemical property?
melting point
density
ability to decompose
color
The diagram above shows the repeating groups of atoms that make up two samples. Both samples are liquid at room temperature. Will the properties of the two samples likely be the same or different? (Examples of properties are smell, color, and the temperature at which a substance melts.)
Answer:
Different.
Explanation:
If you look at the bottom you can see that the bonds are in different cohesions and the molecules have a quad bond and not a tri bond. Atoms defuse ( the process in this photo is diffusion) and the smell, color, and temperature will change.
4. Which statement is true about scientific theories? A.Scientific theories are educated guesses that answer the question of an experiment. B.Scientific theories describe a limited group of observations. C.Scientific theories give cause-and-effect relationships between their parts. D.Scientific theories cannot be proven but they can be disproven.
Answer:
I believe it is D/ Scientific theories cannot be proven but they can be disproven
Explanation:
I choose it on a test I'm waiting for my result
Warm air from a large body of water rapidly moves into a land area of cold air. Which weather event is MOST LIKELY to occur were the two air masses meet?
Question 1 options:
(A) a clear sky
(B) a gentle wind
(C) low humidity
(D)a thunderstorms
Answer:
the answer is D) A Thunderstorm
Explanation:
when warm air and cold air interlope in the sky/clouds they create uneven air quality and a thunderstorm happens
PLEASE HELP ILL GIVE BRAINLIST‼️‼️‼️‼️
At the atomic level are synthetic medicines different from natural medicines? If so explain how they are different.
What internal physical structure protects the organs and supports the body of the animal? Fur Feathers Skeleton Skin
Answer:
Skeleton
Explanation:
Answer:
skeleton
Explanation:
How is density different from weight and mass?
Hello there!
How is density different from weight and mass you say? It's simple!
1. Unlike weight, density is composed of mass and volume.
2. By dividing the mass over the volume, you can determine an object's density, while weight is the product of mass and gravity.
Hope this helps :) if so, can I get Brainliest?
The students need to find out things like how much matter and energy are used to make the bottles and cans.
What are two other things the students should look at before evaluating which container is better for the environment? (2 points)
Answer:
make me brainliest pls hope it helps :)
Explanation:
dependant and independant variables
BRAINLIEST IF CORRECT (fill in the blanks)
The use of pesticides (blank) affect plant reproduction. This occurs because insects are important (blank) of plants. The loss of native insects (blank) a major problem in the United States and can even affect our food supply.
options for blank one: does or does not
options for blank two: pollinators, predators or consumer
options for blank three: is or is not
(please dont answer with stuff that doesn't make sense or "I needed points sorry")
Answer:
Blank 1: does
Blank 2: pollinators
Blank 3: is not
In what step do you perform the steps of your experiment?
What is NOT true about genes and chromosomes?
Genese are located on chromosomes
Chromosomes are in the nucleus
A single chromosome can contain hundreds of genes
All of these are true
Let us go option by option :
1) Genes are located in chromosomes. TRUE
Chromosomes are in cell nucleus. A chromosome contains hundreds and thousands of genes. A normal have 23 pairs of chromosomes, and a total of 46.
2) Chromosomes are the in nucleus.
TRUE
Chromosome is structure found in nucleus of the cell. It is made up of protein and DNA.
3) A single Chromosome can contain hundreds of genes.
TRUE
single Chromosome can contain hundreds of tgenes.
4) All of the above
TRUE
As all the statements above are true. The correct option is 4.
Answer:
all of them are true
Explanation:
this is because chromosomes contain genetic materials and it is present in the nucleus.
Therefore, the correct option is 4) all of these are true
no problem
Katrina is investigating the properties of volume for the different states of matter. First, she places a cube in a bowl of water and observes what happens. Next, she takes the cube out of the water and pours the water into a glass. Which statement describes the observations Katrina made of the cube and the water?
A: When the cube was placed in the water, the shape of the cube stays the same. When the liquid was poured from the bowl into the glass, the shape changed.
B: When the cube was placed in the water, the volume of the cube changed. When the liquid was poured from the bowl, the shape changed.
C: The volume of the cube and the water changed when the cube was placed into the water. The volume of the liquid changed when it was poured out of the bowl.
D: The shape and volume of the cube and the liquid changed when the cube was placed in the bowl. The liquid stayed the same when it was poured from the bowl.
The answer would be
B: When the cube was placed in the water, the volume of the cube changed. When the liquid was poured from the bowl, the shape changed.
Hope this helps
Neutron stars are incredibly dense. Describe a neutron star in terms of a sugar cube.
Scientists have discovered a colony of potential organisms on the Planet Moby and named them "Maxoids." Read the information below that scientists have gathered on Maxoids and decide whether Maxoids are living or nonliving things. Explain how you came to this conclusion.
Through testing and observation, scientists have recorded the following characteristics of Maxoids. Maxoids reproduce via sexual reproduction. One parent carries the Maxoid eggs for 12 weeks before they hatch. After hatching, juvenile Maxoids continue to grow for seven months. To acquire energy for growth, Maxoids consume a peculiar liquid substance native to the planet Moby. The Maxoids' cells use this energy, as well as large amounts of water, to carry out important functions. The Maxoids are sensitive to changes in internal temperature. Sometimes they dig holes and lay in them to cool down if they get too warm.
The Maxoids are living things because they possess the characteristics of living things.
What are living things?Living things are things which have life in them.
Living things are identified by the characteristics which make them living.
The characteristics of living things include:
Movement - living things are able to move all or parts of their bodyRespiration - living things are able to break down food substances to produce energyNutrition - living things are able to take in food substancesIrritability - living things are able to respond to changes around themGrowth - living things are able to increase in size and massExcretion - living things are able to remove waste substances from their bodiesReproduction - living things are able to produce new ones of their kindConsidering the Maxoids;
They are able to reproduceThey take food in the form of a liquid substanceThey are sensitive to changes in internal temperatureIn conclusion, the Maxoids are living things.
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Jennifer and Cody are mixing substances during a lab experiment. They observe the four effects listed below. Which of these effects indicates that a chemical reaction has taken place between two substances?
A pink powdered substance turns water pink when they are mixed together.
A piece of shiny metal begins to bubble when placed in a clear liquid.
A white solid disappears when mixed with water.
A clear, lemon-scented liquid continues to smell like lemon when it is mixed with water.
Answer:
number 2
Explanation:
To draw a Lewis structure for a polyatomic ion, begin by calculating A, the available electrons, and N, the needed electrons. What is N for CIO3-, the chlorate ion?
Answer:
N for chlorate ion is one
Explanation:
Because N is the number of electrons needed to form octet structure causing a negative charge of one, since it already has 25valence electrons
Answer: 26
Correct Answer
An atom tries to have the same number of protons and electrons
(True) or (False)
Answer: The correct answer is true, atoms have the same amount of protons and electrons
Answer:
True
Explanation:
An atom tries to have same number of protons and electrons is true answer
1. Using D10W and a vial of NaCl 4 mEq/mL, how many mL of NaCl are needed to prepare 250 mL of a
D10/NS solution?
a. 4.8mL
b. 9.6ml
c. 19.6mL
d. 154mL
To prepare 250 mL of a D10/NS solution using D10W and a vial of NaCl 4 mEq/mL, you would need 9.6 mL of NaCl. Normal saline (NS) contains 154 mEq/L of sodium chloride (NaCl). To prepare 250 mL of NS, you would need 250 mL * (154 mEq/L) = 38500 mEq of NaCl. Since the vial of NaCl contains 4 mEq/mL, you would need 38500 mEq / (4 mEq/mL) = 9625 mL = 9.6 mL of NaCl. So the correct answer is b. 9.6ml.
Do you think rayon when burnt will stick to the body like other synthetic fibers?
When the speed of the bottle is 2 m/s, the KE is kg m2/s2. When the speed of the bottle is 3 m/s, the KE is kg m2/s2. When the speed of the bottle is 4 m/s, the KE is kg m2/s2. When the speed of the bottle is 5 m/s, the KE is kg m2/s2. When the speed of the bottle is 6 m/s, the KE is kg m2/s2.
instructions
In this part of the experiment, you will be changing the speed of the bottle by dropping it from different heights. You will use the same mass, 0.250 kg, for each trial, so record this mass in Table B for each velocity. Then, calculate the expected kinetic energy (KE) at each velocity. Use the formula KE = mv2,
where m is the mass and v is the speed. Record your calculations in Table B of your Student Guide.
Answer:
Based on the given instructions, you need to calculate the expected kinetic energy (KE) at each velocity using the formula KE = mv^2, where m is the mass and v is the speed. The mass is given as 0.250 kg.
Table B: Calculation of Kinetic Energy (KE)
Table B: Calculation of Kinetic Energy (KE)
Speed (m/s)Mass (kg)KE (kg m^2/s^2)20.2500.50030.2500.75040.2501.00050.2501.25060.2501.500
To calculate the kinetic energy at each velocity, multiply the mass (0.250 kg) by the square of the velocity.
For example, when the speed of the bottle is 2 m/s: KE = (0.250 kg) * (2 m/s)^2 = 0.250 kg * 4 m^2/s^2 = 1.000 kg m^2/s^2
Perform similar calculations for the other velocities and record the results in Table B.
Answer:
Explanation:mass of the bottle in each case is M = 0.250 kg
now as per given speeds we can use the formula of kinetic energy to find it
1) when speed is 2 m/s
kinetic energy is given as
2) when speed is 3 m/s
kinetic energy is given as
3) when speed is 4 m/s
kinetic energy is given as
4) when speed is 5 m/s
kinetic energy is given as
5) when speed is 6 m/s
kinetic energy is given as