40 g of magnesium and 40 g of oxygen react in a chemical reaction in a close system which of the following must result
Answers
Answer:
Option "D" is the correct answer to the following question.
Explanation:
According to The law of conservation of mass, in a chemical reaction mass neither created nor destroyed.
So,
Total product = Mass of magnesium + Mass of oxygen
Total product = 40 gram + 40 gram
Total product = 80 gram
Therefore, option "D" is the correct answer
Related Questions
Describe 3 factors an engineer should take into consideration when choosing material for building the pipes in a pipeline
Gr. 8
Think it has something to do with Viscosity, Density, and Pressure but not sure what
Answers
Answer: 1. Material being transported 2. The temperature of the material being transported 3. How long the pipes will be there (lifespan)
Explanation: 1. - The pipe builder should consider the material being transported to choose the correct material of the pipes to use, so they last long and can hold the material.
2. - Similar to 1, the pipe builder should consider the temperature of the material to choose the correct material of the pipes to use, so the pipes don’t break and function properly.
3. - If the pipe builder uses a material that can hold the material, that’s great! If that material will last a short time, it would not work if the pipes were to be used for a long time.
The things you said before about viscosity, density, and pressure are also correct. The correct answers are mainly talking about factors of the material being used in the pipes.
hope this helped :)
Which of the following forces has not changed Earth's surface?
folding
erosion
weathering
gravity
Answers
Answer:Gravity is the force among the options listed that has not directly changed Earth's surface.
Explanation:
Gravity is a fundamental force that acts on all objects with mass, including the Earth itself, but it does not cause changes or modifications to the Earth's surface features. Instead, gravity influences the movement of materials and the shape of the Earth's surface by exerting a pulling force on objects. On the other hand, folding, erosion, and weathering are all processes that directly contribute to shaping
If the earth were less massive, what effect might that have on the gravitational attraction between the earth and the people on its surface? Support your answer with evidence from the text.
Answers
Answer:
if the earths mass were to spontaneously decrease, and the mass of its inhabitants were to stay the same, then the gravitational attraction between the 2 would be less.
Explanation:
cant provide evidence because you didn't include any text.
If the earth would have been less massive the gravitational attraction of the planet would change.
The strength of the gravitational force depended on the mass and distance. The gravitational attraction of the elements on the earth's surface would also be less and would tend to have no balance.The greater is mass the greater is gravity.
Learn more about the massive, what effect might that have on the.
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What do radio waves and microwaves have in common?
Both are at the side of the spectrum that has the highest frequency.
Both have shorter wavelengths than visible light.
Both have lower frequencies than visible light.
Both have radiant energy than visible light.
Answers
Answer:
I Will say the Answer is A
Explanation:
Hopefully this helps if not i’m sorry
The industry that provides the service of people's experience,
knowledge, or skills is known as the tertiary or
Services industry.
Answers
Answer:
Explanation:
true
The industry which provides service to the experience, knowledge or skill of the people is known as tertiary or service industry. This statement is True.
What is Service industry?Tertiary industry provides services to its consumers which is also known as service industry/sector which is also known as service industry/sector.
This sector includes a wide range of activities ranging from commerce to administration, transportation, financial and real estate activities, business and personal services, education, health and social work.
Companies within a service industry provide specific products or services that satisfy a need or are otherwise useful to customers such as manufacturing or production, service industries do not rely on the sale of goods or physical products that they otherwise provide to the public. provide essential services.
Thus, the industry which provides service to the experience, knowledge or skill of the people is known as tertiary or service industry. This statement is True.
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Which effect is created when two sound waves that are close in pitch
interact?
O A. Echoes
O B. Loudness
C. Beats
O D. Intensity
Answers
Answer:
C. Beats
Explanation:
When waves are interfering with each other, the sound is louder in some places and softer in others. As a result, we hear pulses or beats in the sound.
Answer:
beats
Explanation:
got it right
Please can someone help me need help with these 5 questions!! and QUICK!
I need it done REALLLLLYYYYY soon!! (more like now but-)
(20 points for the answer to all of them)
Answers
Answer:
10. dependent as a change has occurred which has affected something else which is measurable.
11. dependent as a change is made to the environment this is why some species cannot live there as they have adapted to the climate.
12. Dependent due to change occurring it has resulted in the population decreasing which is measurable.
13. Dependent as the animal's and plants' survival is reliant on the environment.
14. Dependant as the plants require sunlight for photosynthies
Answer:
All are dependent
Explanation:
BRAINLIEST
Now that you have done
some research, write a
hypothesis based on the
relationship between zinnias
and the sun. Write it as an
“If ________, then__________”
statement.
Answers
Answer:
If zinnias are exposed to direct sunlight for a sufficient amount of time each day, then they will grow and bloom more successfully compared to those that do not receive adequate sunlight.
Hope my answer helps you ✌️
Mark BRAINLIEST
What type of presentation us easier to plan using a site map?
A. a presentation that lets users link our from a “home” page or slide
B. an animation created digitally using a program like Flash
C. a slide show that starts on slide one and goes slide by slide to the end
Answers
Answer:
I believe that the answer would be A
Explanation:
because there is all of the examples I found online have a home page.
A. a presentation that lets users link our from a “home” page or slide
If someone lifts less weight than you, explain why that person could be considered more powerful.
Answers
Answer:
there faster
Explanation:
stronger,wiser,better,THEY ARE BETTTEEEEEEEERRRRRRRR
Answer:
they're so strong that they don't need to lift heavy weights anymore because they're experts (slay lol). so they just have a simple daily workout.
Which of the following organelles is in plant cells, but not animal cells?
Answers
Answer:
plastids and cell membrane is the answer.
Pls answer I'm giving brainliest to the person with the best answer
Answers
Answer:
you would measure the mass and volume of the two balls.
Answer:
THE FOOTBALL IS BIGGER IN LENGTH BUT SHORTER IN SIZE
Explanation:
why you delete my answer bro :l
As you know bone marrow makes red blood cells, white blood cells, and platelets and as you grow it begins to store fat. What do you think a bone marrow transplant will allow the recipient to do?
Answers
Answer: A bone marrow transplant can allow the recipient to produce healthy blood cells if their own bone marrow is damaged or not functioning properly.
Helppppp pleaseeee!!!!!!!!!!!!!!!!!!!!!!!!!
Answers
Answer:
2. B is correct
1 Part A = Most mass
1. Part B= Least Mass
Explanation:
If you add thermal energy, what happens to the particles?
Answers
Answer:
When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. The motion and spacing of the particles determines the state of matter of the substance. The end result of increased molecular motion is that the object expands and takes up more space.
Explanation:
Answer:
the particles move faster
Explanation:
When a substance is heated, it gains thermal energy. Therefore, its particles move faster and its temperature rises. When a substance is cooled, it loses thermal energy, which causes its particles to move more slowly and its temperature to fall.
Why would observe the Sun “move” across the sky during the day support early astronomers' belief in the geocentric model?
Answers
What are some ways to block fear from back tumbling?
Answers
Answer:
to trust your yourself and fundamentals! It's all mental just need a little more confidence.
Explanation:
You got this!
Help me out with this stuff
Answers
Answer:
just try
Explanation:
just tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryvjust tryjust tryjust tryjust try just tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust tryjust try
Answer:
there is a reason why g o o g l e was made you know.
Explanation:
help me please 35 points and mark brainliest
Answers
1. The kinetic energy of the truck is 1959940.8 J
2. The kinetic energy of the car is 463037.04 J
1. How do i determine the kinetic energy of the truck?The kinetic energy of the 6000 Kg truck can be obtained as follow:
Mass of truck (m) = 6000 KgVelocity of truck (v) = 92 Km/h = 92 / 3.6 = 25.56 m/sKinetic energy of truck (KE) =?KE = ½mv²
KE = ½ × 6000 × 25.56²
KE = 1959940.8 J
Thus, the kinetic energy is 1959940.8 J
2. How do i determine the kinetic energy of the car?The kinetic energy of the 6000 Kg truck can be obtained as follow:
Mass of car (m) = 1200 KgVelocity of truck (v) = 100 Km/h = 100 / 3.6 = 27.78 m/sKinetic energy of car (KE) =?KE = ½mv²
KE = ½ × 1200 × 27.78²
KE = 463037.04 J
Thus, the kinetic energy is 463037.04 J
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Compare the series of events that led to people going into outer space with the series of events that led to Curiosity landing on Mars.
Answers
Answer:
The Mars Science Laboratory and its rover, Curiosity, were launched from Earth on November 26, 2011. As of May 15, 2021, Curiosity has been on the planet Mars for 3119 sols (3204 total days; 8 years, 282 days) since landing on August 5, 2012. (See Current status.)Prelaunch (2004–2011)
Cruise stage is tested in 2010.[1]
In April 2004, the United States National Aeronautics and Space Administration (NASA) called for scientific experiments and instruments proposals for the Mars Science Laboratory and rover mission.[2] Launch was proposed for September 2009.[3][4] By December 14, 2004, eight proposals were selected, including instruments from Russia and Spain.[2][4]
Testing of components also began in late 2004, including Aerojet's monopropellant engine with the ability to throttle from 15 to 100 percent thrust with a fixed propellant inlet pressure.[2] By November 2008 most hardware and software development was complete, and testing continued.[5] At this point, cost overruns were approximately $400 million.[6] In December 2008, lift-off was delayed to November 2011 due to insufficient time for testing and integration.[7][8][9]
Between March 23–29, 2009, the general public ranked nine finalist rover names (Adventure, Amelia, Journey, Perception, Pursuit, Sunrise, Vision, Wonder, and Curiosity)[10] through a public poll on the NASA website.[11] On May 27, 2009, the winning name was announced to be Curiosity. The name had been submitted in an essay contest by Clara Ma, a then sixth-grader from Kansas.[11]
Explanation:
Evidence for atmospheric loss
On April 8, 2013, NASA reported that much of the atmosphere of Mars has been lost based on argon isotope ratios studies.[89][90]
On July 19, 2013, NASA scientists published the results of a new analysis of the atmosphere of Mars, reporting a lack of methane around the landing site of the Curiosity rover. In addition, the scientists found evidence that Mars "has lost a good deal of its atmosphere over time", based on the abundance of isotopic compositions of gases, particularly those related to argon and carbon.[91]
Match the following activities.
Answers
How do we know there has not been an increase in the number of earthquakes? Officials from the U.S. Geological Survey, the government agency that keeps track of earthquakes, point to statistics. On average, there have been no more earthquakes so far in 2010 than there were in previous years.
What Happens During Earthquakes?
In reality, it's not the number of quakes that has gained our attention, but the devastating impact quakes can have. Earthquakes are very natural—it's inevitable that they'll happen because of the way the planet works. The earth's surface is made up of tectonic plates that fit together like puzzle pieces and are always moving past each other. When two of the plates' edges get caught, stress builds up at the fault line—the crack between the plates. When the plates are finally able to break free of each other, the stress is released, and an earthquake occurs. Earthquakes of varying strengths happen every day, usually at fault lines. Some of these quakes have a high magnitude, while others are relatively weak. But it's often where an earthquake takes place that determines whether it will be something that goes largely unnoticed, or a disaster that affects thousands of people.
What Is Changing?
In the past, earthquakes were not as much of a problem because Earth's population was smaller, and cities were less populated.
"Look at some of the big [earthquakes] recently," said Debarati Guha-Sapir of the World Health Organization. Guha-Sapir cited some earthquakes that took place in areas where the population had increased in recent years, making the quakes more serious. "Had the Izmit or Bhuj quakes [of 1999 and 2001] happened 30 years ago, the events would have been relatively insignificant, as the [populations] of these cities were a third of what [they were when the earthquakes happened]. Increasing population density makes a small event into a big one."
Some of the earthquakes that took place in early 2010 occurred in highly populated areas, as well. More people are moving into megacities that happen to be built on fault lines—and many cities are on fault lines. Of the 130 cities with more than one million people, more than half are in earthquake zones, making them more prone to earthquakes.
In many of these cities, officials have drawn up laws requiring that buildings be designed and constructed to endure earthquakes. But some cities, particularly those in developing countries, lack the resources to do this. There, people are rapidly putting up substandard buildings that can't withstand the force of the shaking earth. For example, the Haiti earthquake took place near the nation's crowded capital. There was a great deal of destruction because there were "too many people crammed into a city that wasn't meant to have that many people and have an earthquake," said University of Miami geologist Tim Dixon.
Another reason quakes seem worse is that we're paying more attention. Everyone noticed when the Haiti earthquake was quickly followed by the Chile earthquake. Many people watched the news and the Internet for updates on these disasters, unable to believe that they were seeing two major earthquakes in such a short period of time. But eventually, the earth will have a period when earthquakes are minor or in unpopulated areas. Then people won't notice quite so much anymore.
"People are paying attention to the violent planet we've always lived in," said Dennis Mileti, a seismic researcher. "Come back [at a time when] there have been no [noticeable] earthquakes, [and] most people will have forgotten [about them] again."
According to the article, what is one reason why it seems as if the world is experiencing more earthquakes than usual?
Answers
Answer: because there has not been one in years
Explanation: there was not on now 2023, 2022, 2021, 2020, and 2019
Answer:
The number of earthquakes has not increased because earthquakes didn't happen in the USA for a while.
Explanation:
A meteor falls toward Earth's surface. Given that the acceleration due to
gravity is 9.8 m/s^2, what is the meteor's potential energy if it has a mass of 10
kg at an altitude of 400 m?
O A. 408 J
O B. 7,840,000 J
O C. 2J
O D. 39,200 J
Answers
Answer:
39,200J
Explanation:
just took the test
The meteor's potential energy if it has a mass of 10kg at an altitude of 400 m will be 39200 J
What is potential energy ?Potential Energy that depend upon the relative position of various parts of system . It is an energy possessed by an object by virtue of its position or configuration.
mass(m) = 10kg
g (acceleration due to gravity) = 9.8m/s^2
altitude(height (h)) = 400m
Meteor's Potential energy = m * g * h
= 10 * 9.8 * 400 = 39200 J
correct option will be a) 39200 J
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Please help me find the correct words that go with the definition due TONIGHT!!!
Answers
Match the numbers to the answer below
Answers
2. Isobar
3. Cold Front
4. Air mass
5. Weather maps
Where are the reproductive parts of a plant located?
Leaves
Flower
Roots
Stem
Answers
Answer:
FlowerExplanation:
The flowers are the reproductive parts of a plant. Stamens are the male reproductive part and pistil is the female reproductive part.I WILL BRAINLIST!!! BRAINLIST!!!!!!!!
It is often said that the basic physical needs of humans are warmth, food, and shelter. Everything else we have maybe things we want without necessarily being needs. Think about this carefully and then make the following lists.
Make a list of twenty things in your home that are things you need. These should be things related to supplying you with warmth, food, and shelter, but make your own judgments about this.
Answers
Answer:
1) clothe
2) pillow
3) wood
4) shoes
5) quilt
6) seeds
7) water
8) bed
9) utensils
10) chair
11) umbrella
12) socks
13)comb
14)gloves
15)handkerchief
16)oil
17)sugar
18)salt
19)vegetable
20)fruits
Explanation:
mark me brainliest
What is something that is artificially pressurized to to outside air pressure, no links.
Answers
The anwser is a plane because it protects pilot, crew and passengers from hypoxia.
What would happen to the digestion process if enzymes were not present
Answers
Answer: It would take 2.3 billion years for the biological reaction without the presence of enzymes. It’s because, without them, your body can’t break down foods so that nutrients can be fully absorbed. Every organ, every tissue, and every 100 trillion cells in our body rely upon the reaction of metabolic enzymes and their energy component.
Explanation:
I hope this helps
Without enzymes, the body would not be able to break down complex carbohydrates, proteins, and fats into their component molecules. This means that these nutrients would not be absorbed by the body and would be excreted as waste.
Additionally, the lack of enzymes would make it difficult for the body to digest and absorb vitamins and minerals. This could lead to malnutrition and other health problems over time.
Overall, the absence of enzymes from the digestive process would severely impair the body's ability to extract nutrients from food and could have negative consequences for overall health and well-being.
What is the answer to mgh =1/2 mv^2 + 1/5 mv^2 ???
Answers
Answer:
v = sqrt((10/7)gh)
Explanation:
The given equation is:
mgh = (1/2)mv^2 + (1/5)mv^2
To solve for v, we can start by simplifying the right side of the equation:
mgh = (7/10)mv^2
Dividing both sides by (7/10)mv^2, we get:
mgh / (7/10)mv^2 = 1
Multiplying both sides by (10/7)m/gh, we get:
v^2 = (10/7)gh
Taking the square root of both sides, we get:
v = sqrt((10/7)gh)
Therefore, the solution for v in terms of m, g, h is:
v = sqrt((10/7)gh)