Answers
Answer:
I think u are supposted to find out the are the missing things
Explanation:
Related Questions
Thomas thinks that acceleration means “speeding up.” Explain why this is incorrect.
Answers
Answer:
Explanation:
Thomas is incorrect because acceleration is a vector quantity that is defined as the rate at which an object changes its velocity. An object is accelerating if it is changing its velocity.
Which set of coefficients would balance the following equation?
Mg + AlCl3 → Al + MgCl2
A. 2Mg + AlCl3 → Al + 2MgCl2
B. 3Mg + 2AlCl3 → 2Al + 3MgCl2
C. Mg + 2AlCl3 → 2Al + MgCl2
D. 3Mg + 4AlCl3 → 4Al + 3MgCl2
Answers
Explanation:
Reactants side Products side
Mg - 3 Mg - 3
Al - 2. Al - 2
Cl - 6 Cl - 6
The chemical equation which is balanced according to law of conservation of mass is 3 Mg + 2 AlCl₃ → 2 Al + 3 MgCl₂.
What is chemical equation?Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.
A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .
The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.
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CH4 + __O2 → CO2 + ___H2O
balance this equation
Answers
Explanation:
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Answer:
CH4+2O2→CO2+2H2O
Explanation:
Start with the least common atoms and leave things like H and O to the end.
You need to have the same number of methane reactants as carbon dioxide products because there is one carbon in each. I’ll set them both to 1 for now. O see two things with oxygen on the product side so we will have to juggle numbers a bit to figure out those. There is only H in the water so we’ll go there next. One CH4 gives 2 water molecules so we have that done now. At last we can tackle the O atoms. In two waters there are 2 and in the CO2 there are two more so a total of 4 O atoms in the products so we need two O2 molecules in the reactant side.
Hope this is useful.
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Which of the following statements is TRUE regarding air resistance?
A fast-moving object experiences more air resistance than a slow-moving object
A slow-moving object experiences more air resistance than a fast-moving object
Answers
A fireman feels the heat from a fire before he even gets up to it. This is caused by ___.
a conduction
b convection
c radiation
Answers
Answer:
C. Radiation
Explanation:
Radiation is waves or particles going through space, so you would feel heat
A boat is traveling to the right at 300 N, the current is going to the left at 600N. What is the net force and direction?
Answers
Match the following items with the correct descriptions.
1. releases hydrogen ions
base
2. accepts hydrogen ions
eight
3. poor conductor of electricity
metal
4. shiny and lustrous
nonmetal
5. maximum number of electrons in first shell
acid
6. maximum number of electrons in second shell
two
Answers
Answer:
1.releases hydrogen ion acid
2.accepts hydrogen ion base
3. poor conductor of electricity non metal
4. shiny and lustrous metal
5. maximum number of electrons in first shell
two
6. maximum number of electrons in second shell
eight
The shape of the illuminated portion of the Moon as seen by an observer, usually on Earth:
1. Lunar Eclipse
2. Solar Eclipse
3. Moon Phases
4. The Sun
Answers
Answer:moon phases
Explanation:
Moon phases because the moon phases changers every day
a
a decrease in the number of zebra mussels along the waterways
b
an increase in the number of zebra mussels along the waterways
c
no effect because more time is needed to determine an outcome
d
no change in the number of zebra mussels infecting the waterways
Answers
Could you add a screenshot so we know what's being asked please?
The invention of the _____________ was considered the critical invention for easily classifying and organizing Stars by brightness, color, and temperature
Radio Telescope
HR Chart (Hertzsprung- Russell)
Infra red Camera
Nasa Star Modeling Programs
Answers
Answer:
radio telescope
Explanation:
We use radio telescopes to study naturally occurring radio light from stars, galaxies, black holes, and other astronomical objects. We can also use them to transmit and reflect radio light off of planetary bodies in our solar system.
How is salinity affected?
(a) evaporation increases
(c) freezing increases
(d) melting increases
(e) precipitation increases
Where does the energy that causes evaporation come from?
What role does gravity play in the water cycle?
Describe the flow of one molecule of water through the water cycle, beginning in the ocean.
Answers
Answer:
A and E.
Explanation:
When water evaporates, it leaves the salt. When rain falls, the salt is diluted. The sun causes the evaporation. The also the sunlight is the energy source, the greatest force propelling the water cycle is gravity. Gravity is the force of attraction between two objects, and Earth’s gravity pulls matter downward, toward its center. It pulls precipitation down from clouds and pulls water downhill. Gravity also moves air and ocean water. Also Water travels in a continuous path through Earth called the water cycle. The journey starts in the Earth's oceans. As the Sun heats the ocean, the water evaporates into a gas. The gas meets cooler air, and the gas changes into droplets of tiny water molecules. This process is called condensation. Little droplets of water fall back down to Earth again as precipitation. The precipitation fills up the rivers and various other things and the cycle begins all over again. Now with this being said, there is much more than just this!
Good luck!
Fill in the chart to describe and give examples of physical changes.
Answers
Answer:
here are some examples of physical change!!!
Explanation:
-An ice cube melting into water in your drink.
-Freezing water to make ice cubes.
-Boiling water evaporating.
-Hot shower water turning to steam.
-Steam from the shower condensing on a mirror.
Answer:
Examples:
Melting an ice cube.
Boiling water.
Mixing sand and water.
Breaking a glass.
Dissolving sugar and water
Drinking water has two sources. It can come from surface water, such as reservoirs or rivers. Or it can come from groundwater where it either naturally surfaces in a spring or where it must be pumped to the surface from a well. Where does your drinking water come from?
Answers
82% of drinking water supplies in Ireland are sourced from surface water (rivers and lakes) and 18% comes from groundwater - it depends where you live (quick g00gle search should answer you question)
Our drinking water comes from the underground sources like wells, hand pumps, etc.
What are the sources of water?Sources of water are the places from where the water comes to earth for the uses.
In our houses drinking water comes from the underground sources, through the wells, hand pumps, etc. From that source we get natural water for the drinking purposes.
Hence we get water from underground sources.
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Which of the following would not be restricted (limited) by low levels of ATP?
Answers
need help on queston 4 and 5
Answers
5) basic
b. acidic
Match the following vocabulary words with the correct definitions.
1. amount of matter in an object
matter
2. anything which has mass and occupies space
molecule
3. measurement of the pull of gravity on an object
atom
4. molecule with different atoms chemically united
mass
5. chemical combination of two or more atoms
weight
6. smallest unit of matter
compound
Answers
2. Matter
3. Weight
4. Compound
5. Molecules
6. Atom
What is unique about obtaining water from an artesian well?
The water is heated by magma or hot rocks.
The water is found in an impermeable layer.
The water is under pressure naturally and no pump is needed.
A mechanical pump must be installed to bring water to the surface.
Answers
Answer:
The water is under pressure naturally and no pump is needed.
Explanation:
C
The water in artesian wells is under natural pressure and requires no pump.
What are artesian wells?They are wells that contain water that is under natural flowing pressure. Thus, there is no need of using artificial pumps in order to get the water to the surface.
Artesian wells are dug on lands with special geological features that enable the water to flow out under natural pressure.
Artesian wells differ from other types of wells that require mechanical or electric pumps before the water can get to the surface.
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Can yall please help me with this
Answers
Answer:
option D
Explanation:
option D is the correct answer.
mechanical energy = kinetic energy + potential energy
mechanical energy = 40+ 60 = 100 joules .
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What type of eclipse is pictured below?
Answers
Help its for science ill give brainilest.
Answers
Answer:
This equation reveals that the kinetic energy of an object is directly proportional to the square of its speed. That means that for a twofold increase in speed, the kinetic energy will increase by a factor of four.
Explanation:
2. Calculate: For each object, substitute the values you know into the gravitational potential energy equation to solve for weight. Record each object's weight in the fourth (science)
Answers
Answer:
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Explanation:
In an exothermic reaction, chemical energy is converted to _____.
1.thermal
2. mechanical
Answers
Because exothermic is having to do with energy
The chemical reactions are generally of many types. The exothermic and endothermic reactions are important among them. In an exothermic reaction the chemical energy is converted to thermal energy. The correct option is 1.
What is exothermic reaction?The chemical reactions which proceed with the evolution of heat energy are defined as the exothermic reactions. The chemical reactions which proceed with the absorption of heat energy are called endothermic reactions.
In an exothermic reaction, system loses heat to surroundings. Since heat is given out in exothermic reactions, the enthalpy of the products will be less than that of the reactants.
In exothermic reaction, q will be negative and the enthalpy change will be also negative. In this reaction chemical bonds are broken and new bonds are formed. The chemical energy is converted to kinetic energy which is released as heat.
Thus exothermic reaction releases thermal energy.
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Scientists approximate that there are 20 billion stars like our sun in the Milky Way.
Why does the sun appear to be brighter than any other star in the Milky Way?
A.the sun is older than all of the other stars in the Milky Way
B.the sun is closer to the earth than any other star in the Milky Way
C.the sun is hotter than any other star in the Milky Way
D.the sun has more energy than any other star in the Milky Way
Answers
Answer: B.) the sun is closer to the Earth
Answer:
C
Explanation:
the sun is really hot so that is why
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What would u write in a THESIS for Piney Woods?
GIVING BRAINLIST WHO EVER ANSWERS WITH PARAGRAPHS!
Answers
Answer:
Your thesis statement belongs at the end of your first paragraph, also known as your introduction. Use it to generate interest in your topic and encourage your audience to continue reading.
Explanation:
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Answer:
There is not a wrong answer for creating a thesis. The thesis reflects the many opinions you have towards the particular script. Use what you have learned from reading this and create a morale. If you have an opinion about it, try clearly stating it. Anything works. Just think of it as a bridge. Can it support the many ideas you have? REMEMBER stay on track and dont over think it!
Explanation:
When potassium metal is added to water, a violent reaction occurs that releases a tremendous amount of light and thermal energy. This is an example of an _________ reaction.
1). endothermic
2). exothermic
Answers
Answer:
An Exothermic reaction.
Explanation:
An exothermic reaction produces heat, while endothermic reactions absorb heat
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Are beaches made from erosion or deposition?
Answers
Answer:
Desposition
Explanation:
Answer:
Deposition
Explanation:
Beaches are wave-deposited accumulations of sediment.
How would the amount of force needed to keep the kite in the air change if it were made out of a heavier material instead of a lighter material?
(A)The amount of force needed would be greater.
(B)The amount of force needed would be the same.
(C)The amount of force needed would go up and down with the kite.
(D)The amount of force needed would be smaller.
Answers
Plz helpppp
1. What causes a delta to form at the mouth of the river?
A. Wind
B. Water
C. Ice
2. A cliff forms by the ocean. (Erosion)
A. Wind
B. Water
C. Ice
Answers
Answer:
Water
Water
Explanation:
Answer:
1 Water 2 wind
Explanation:
is the answer
The wastewater in your home goes to one of three places. It can run into a home septic system, it can go to a centralized sewage treatment plant, or it might be directly discharged into a body of water. Where does your water go after it goes down the drain?
Answers
Answer:
Sewage Treatment
Explanation:
I am sorry if I got this wrong but if I did please correct me!
How does this evidence help explain why the skin cancer rate is higher in Australia than in Brazil, even though the two countries get the same amount of sunlight?
Answers
Answer:
The Ozone layer
Explanation:
Ozone in the atmosphere can absorb ultraviolet light, which stops the light from reaching Earth’s surface, so people absorb less of it. Australia has less ozone than other places, like Brazil, and this is why Australia gets more ultraviolet light.