7. What are the coefficients when the equation below is balanced?
CH4 + 02 → __CO2 + ____ H2O
A)1,2,1,2
B)1,3,4,1
C)1,2,3,4
D)2, 2, 1, 2
Answers
Answer:
A
Explanation:
Answer:
A
Explanation:
In order to balance an equation,the number of atoms of elements on the right side must equal the number of atoms of the same elements on the left side.After balancing the equation,C has 1 atom on both the left and right side,H has 4 atoms each on both sides of the equation and O has 4 atoms each on both sides of the equation,hence balanced.
Related Questions
Calculate the volume (in cm3
) of 54 g
of water at 1 ∘C
.
Express the volume in cubic centimeters to two significant figures.
Answers
How does an atom change if all of its electrons are removed?
p.s. I'll mark the first answer the brainliest if it is correct! ;)
a. The atom’s volume increases.
b. The atom’s mass increases.
c. The atom becomes positively charged.
d. The atom becomes negatively charged.
Answers
c. The atom becomes positively charged
if the electrons are removed it means theres no longer a negative charge to balance the positive charge of the protons in the atom
What is the series of energy transfers shown in the picture below?
A) chemical to mechanical to electrical to thermal
B) mechanical to chemical to thermal to electrical
C) electrical to thermal to mechanical to chemical
D) thermal to mechanical to electrical to chemical
Answers
Answer:
The correct answer is A.
How many sulfur atoms are generated when 9.42 moles of H2S react according to the following equation: 2H2S+SO2→3S+2H2O
A) 8.51 × 10^24
B) 3.78 × 10^24
C) 8.51 × 10^23
D) 9.42 × 10^23
Answers
Answer:
A) 8.51 × 10²⁴
Explanation:
1. Gather all the information
2H₂S + SO₂ ⟶ 3S + 2H₂O
n/mol: 9.42
2. Calculate the moles of S atoms
The molar ratio is 3 mol S:2 mol H₂S
\(\text{Moles of S} = \text{9.42 mol H$_{2}$S} \times \dfrac{\text{3 mol S }}{\text{2 mol H$_{2}$S }} = \text{14.13 mol S}\)
3. Calculate the atoms of S
\(\text{Atoms of S } = \text{14.13 mol S} \times \dfrac{6.022 \times 10^{23}\text{ S atoms}}{\text{1 mol S}} = \mathbf{8.51 \times 10^{24}}\textbf{ S atoms}\)
The sulfur atoms that should be generated is \(A) 8.51 \times 10^24\).
Given that,
9.42 moles of H2S reacted to the given equation.Also, 1 mole for the substance contains \(6.022 \times 10^23\) no of atoms & molecules. The calculation is as follows:\(= \frac{3\times 6.022\times 10^23\times 0.42}{2}\\\\= 85.0909 \times 10^23\\\\= 8.509 \times 10^24\\\\= 8.51 \times 10^24\)
Therefore we can conclude that the sulfur atoms that should be generated is \(A) 8.51 \times 10^24\).
Learn more: brainly.com/question/17127206
What kind of rocks would you expect to see on Mars? What evidence supports your response?
Answers
Why would leaves changing color be a chemical change and not a physical change
Answers
Answer:
Explanation:
Leaves changing color is a chemical change because it involves a transformation of the chemical composition of the pigments within the leaves. During this process, the green pigment chlorophyll breaks down, revealing other pigments such as carotenoids (which produce yellow, orange, and brown colors) and anthocyanins (which produce red and purple colors). These pigments undergo chemical reactions that change their molecular structures, resulting in new colors.
In a physical change, the substance itself remains the same, but its physical properties may change, such as its shape, size, or state (solid, liquid, gas). However, in the case of leaves changing color, the chemical composition of the pigments is altered, resulting in a new substance with different properties. Therefore, this process is considered a chemical change.
Answer:
Why would leaves changing color be a chemical change and not a physical change?
Well, a chemical change is when a new substance IS formed and a physical change is a type of change in which a new substance is NOT formed. So leaves changing color would be a chemical change because they involve chemical reactions to occur.
Explanation:
You're welcome
Which following statements is true?
Electrons contribute most of the mass of an atom.
Electron placement determines an atom’s reactivity.
Proton location determines properties such as luster.
Neutrons determine whether an atom is liquid at room temperature.
Answers
Answer:
first one
Explanation:
hope this helps
Fossils are the preserved remains or traces of an organism that used to be alive.
Answers
Answer:
This is True
Explanation:
A fossil is any remains or trace of an ancient organism. Fossils include body fossils, left behind when the soft parts have decayed away, as well as trace fossils
Which choice describes an organism found in the understory of a rainforest? Responses
A. Palms and other small trees
B. Very tall trees
C. Bacteria
D. Thick, woody vines
Answers
Answer: Palms and other small trees
Explanation:
Answer:
A. Palms and other small trees
Explanation:
Understory Layer
Located several meters below the canopy, the understory is an even darker, stiller, and more humid environment. Plants here, such as palms and philodendrons, are much shorter and have larger leaves than plants that dominate the canopy. Understory plants’ large leaves catch the minimal sunlight reaching beyond the dense canopy.
https://brainly.com/question/21423132
A dog is exposed to radiation and it caused damage to a cell’s DNA. This genetic change results in the controls on mitosis not working. Which one of the following is most likely to occur after this damage?
Responses
An infection in the blood spreads results in sepsis ,
A blood clot stops oxygen to the heart, causing a heart attack,
Cells produce new versions of a virus to allow it to spread throughout the body
The cell dividing rapidly and creating a cancerous tumor
Answers
I suppose the last option to be correct.
Answer:
The cell dividing rapidly and creating a cancerous tumor
Explanation:
What was one was one important impact of Supreme Court's ruling in Bush v. Gore
Answers
Answer: the answer is b or c
Explanation:
I took it
Study the graph about seismic waves.
Graph of P & S Wave Travel Times, showing Travel time in minutes across distance in kilometers for P and S waves. S wave starts at zero kilometers, zero minutes, and increases to 10,000 kilometers, 25 minutes. P wave starts at zero kilometers, zero minutes and increases to 10,000 kilometers, 13 minutes.
What does the graph show?
The S and P waves travel the same distance through Earth’s crust in the same amount of time.
The P wave travels through Earth’s crust more quickly than the S wave travels.
It takes the P wave 18 minutes to travel 6,000 km through Earth’s crust.
It takes the S wave 11 minutes to travel 8,000 km through Earth’s crust.
Answers
Answer:
siezmic waves increase
Explanation:
Answer:
B
Explanation:
i took edge 2020
when do scientists use models i will mark best one brainlest
Answers
A portion of the periodic table is shown below: A portion of the thirteenth and fourteenth columns of the periodic table is shown. Column 13 reads five boron 10.811 and 13 aluminum 26.982. Column 14 reads six carbon 12.011 and 14 silicon 28.086. Which element has the electron configuration 1s22s22p63s23p1? Aluminum (Al) Boron (B) Carbon (C) Silicon (Si)
Answers
Answer:
HEY SO LOOOK U NEED TO BE MORE DIRECT YOU FEEL ME SON SO ITS GONNA BE A
Explanation:
Answer:
it is Aluminum
Explanation:
just add the exponents
Write a three paragraph essay about being a scientist. Include the following: If you could be any kind of scientist, what kind would you be? Why? Describe what your life would be like as the scientist you imagine.
Answers
Answer:
the answer is a hope this hep;slms
Explanation:
betuase im write
Answer:
If I were to be a scientist, I'd be a botanist. A botanist is a scientist who studies plants. For example, they study many different aspects like their genetic, physical structure, and the distribution. They also study the relationship between plants and their different environments.
I would choose to be a botanist, because they help save our plants which are very important. They also help with telling others what exactly causes pollution and possible ways to stop it. Botanist also help with providing human resources like food. Without botanist, we would have a lot less of resources that we use in everyday life.
I can see my life as a botanist in many different ways. I might be put in the chemical based section or I might be put in the analysis of plants. Overall if I were to see myself as any kind of scientist, It would have to be a botanist.
Explanation:
Hope it helps, feel free edit whatever you'd like too
What might happen if there is excessive water removal from the Central Valley Aquifer in California?(1 point) Responses
A. It can cause severe weather changes in California.
B. It can cause severe weather changes in California.
C. It can transform California completely to a desert.
D. It can transform California completely to a desert.
Answers
Answer:
A
Explanation:
California is surrounded by the sea so it would never run out.
Do balanced or unbalanced forces make an object move?
Answers
Please help with questions 11-13! I’ll give brainliest
Answers
11- 3
12- 4
13- 2
11- 3
12- 4
13- 2 hope this helps
Someone please help me if right I’ll give you 5$
Answers
Answer:DId you even read it you have to that in your lab class and says you need other information aint no way i can answer that
Explanation:
Which object has the most kinetic energy?
A. a train that is stopped
B. a car moving at a slow speed
C. a train moving at a slow speed
D. a car that is stopped at the top of a hill
Answers
Explanation: kinetic energy means that the object is moving, automatically eliminating A and D since they are both stopped. The formula for kinetic energy is KE=1/2m(v^2) (m= mass and v= velocity). Since the train has more mass than the car, the train has more kinetic energy.
How does it change when it is brought inside a warm house?
Answers
The reader can infer from the article that __________.
A. Altaeros Energies and other companies must have their turbines approved before using them to generate electricity.
B. Fort Felker of the National Wind Technology Center is most concerned about flying turbines colliding with airplanes.
C. Adam Rein would probably advise Altaeros Energies to avoid using old technology used by the government.
D. Cristina Archer is doubtful that companies can solve the problems with tapping high-altitude winds for energy.
Answers
HELP PLZ
In your own words, explains why gravity does not pulls us all the way to center of the Earth
Answers
Answer:
Gravity is acting upon every object on the earth, and it is pulling everything towards its center. But everything does not collapse to its center because the surface on which the object stands provides the reaction force upward (away from the center) and balances the weight of the object.
Max and Jimmy want to jump on a trampoline. Max begins jumping in a steady pattern, making small waves in the trampoline. Jimmy starts jumping on the trampoline too. Suddenly, Max goes twice as high even though he did not put any extra effort into jumping.
What type of wave interaction is this? Explain how it occurred.
Answers
Because there is one wave interfering with the other. They are both separate waves with completely different patterns, and they are running into each other.
Hope this helps! :)
Answer: The wave interaction described in the scenario is known as constructive interference.
Explanation:
Constructive interference occurs when two waves meet and combine in such a way that their amplitudes add up, resulting in a larger wave. In this case, Max's steady pattern of jumping creates small waves on the trampoline, with a certain amplitude.
When Jimmy starts jumping on the trampoline, his waves combine with Max's waves. If the peaks and troughs of both waves align perfectly, they will add up, resulting in a wave with a larger amplitude. This alignment of peaks and troughs leads to constructive interference, causing Max to go twice as high without any additional effort.
The reason behind this phenomenon lies in the nature of waves. When waves meet, their amplitudes can either add up or cancel out, depending on their relative positions. In the case of constructive interference, the peaks of one wave align with the peaks of the other wave, and the troughs align with the troughs, resulting in an increased amplitude. Conversely, in destructive interference, the peaks align with the troughs, leading to a cancellation or reduction in amplitude.
So, in the scenario, Jimmy's waves align with Max's waves in such a way that their amplitudes combine constructively, resulting in Max going twice as high on the trampoline without exerting any extra effort.
G
A substance occupies one half of an open container. The atoms of the substance are closely packed but are still
able to slide past each other.
What is most likely the phase of the substance?
gas
liquid
solid and gas
O liquid and solid
Mark this and return
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Submit
Answers
Answer:
Solid and gas
Explanation:
A small gap is left between the rails in the railway track. Analyze the reason.
Answers
Answer:
There could be several possible reasons for a small gap between rails on a railway track, such as:
1. Expansion joints: Railways are designed to allow the tracks to expand and contract with changes in temperature. To accommodate this expansion, small gaps are left between the rail ends and filled with expansion joints or plates.
2. Wear and tear: Over time, the rails may experience wear and tear due to heavy loads, weather conditions, and other factors. As a result, small gaps can appear between the rails.
3. Maintenance: During maintenance activities, rail tracks may be adjusted or replaced, which could lead to small gaps between the rails.
4. Environmental factors: Environmental factors such as soil shifts, earthquakes or other natural disasters can also affect the alignment of the rails, leading to small gaps.
These are some of the possible reasons for a small gap between the rails on a railway track.
Answer:
The small gap left between the rails in a railway track is intentional and serves a specific purpose. This gap is known as the rail joint, and it allows for the expansion and contraction of the rails due to changes in temperature. When the temperature changes, the metal rails will expand or contract, and if they were joined together tightly, they could buckle or become deformed, which could be dangerous for trains passing over them. The rail joint allows the rails to move slightly and prevent damage to the track.
Additionally, the rail joint also allows for maintenance and repairs of the track. If there were no gap between the rails, it would be challenging to replace a damaged rail or perform routine maintenance, such as tightening bolts or lubricating joints. With the rail joint, maintenance personnel can easily access and work on the track.
Overall, the small gap left between the rails in a railway track is intentional and serves a crucial function in ensuring the safety and reliability of the track.
A student wants to determine the effect of mass on kinetic energy. She will drop two balls of the same size into a pool of water. Which investigation method should the student use?(1 point)
a. She should drop two balls of the same mass from different Hights.
b.she should drop two balls with different masses from the same Hights
c.she should drop two balls with different masses from different Hights
d.she should drop two balls of the same mass from the same Hights
Answers
which word describes the forces acting on the car?
inertial
balanced
buoyant
unbalanced
Answers
Answer:
inertial okokokok
The force acting on the car is unbalanced in horizontal direction. The force acting to the right is 5000 N and that to the left is 6000 N. So there will be a net force of 1000 N to the left side.
What is unbalanced force?Force is a vector quantity with a magnitude and direction. Force acting on a body able to deform it or to make a change in its state of rest or motion. The net force acting on an object depends on both the magnitude and direction of all kinds of forces acting on it.
If two forces are acting from the side, then the net force will be the sum of their magnitudes. If the forces are acting in the opposite directions, they will cancel each other or balanced.
In the given figure, the force acting upward and downward are equal in magnitude and will cancel each other. But, those acting to the left and right are not balanced and thus there will be a net force of 1000 N to the left.
To find more on unbalanced forces, refer here:
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Compare a heterogeneous mixture and a homogeneous mixture.
Answers
Answer:
A homogeneous mixture has the same uniform appearance and composition throughout. A heterogeneous mixture consists of visibly different substances or phases. The three phases or states of matter are gas, liquid, and solid.
Explanation:
Hope you will like it
Determine which reaction has the highest activation energy
Answers
Answer:
we need to look at what actually happens to reactant molecules during a chemical. in order for the reaction to take place , some or all of the chemical bonds in the reactants must be broken so that the new bonds, those of the products , can form.
Answer:
Graph 3
Explanation:
got it right.