It is impossible to generate or destroy matter. As long as nothing exits the system, the total mass determined at the beginning of the reaction will match the total mass determined at the conclusion of the reaction.
What is matter ?A material called matter is made up of several kinds of particles, occupies space, and has inertia. The many sorts of particles each have a unique mass and size according to the fundamentals of current physics. The electron, proton, and neutron are three examples of material particles that are most well-known.
Antoine Lavoisier discovered in 1789 that mass is neither generated nor destroyed in chemical processes, which led to the formulation of the Law of Conservation of Mass.
That is to say, the mass of any one element at the start of a reaction will be equal to that element's mass at the conclusion of the reaction.
However, mass may appear to change if the chemical reaction takes place in an open system.
Thus, It is impossible to generate or destroy matter.
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What does the little ‘2’ in 2O2 mean?
Answer:200
Explanation:
Which continents were most difficult to place? Why?
Answer:
Antarctica and Australia
Explanation:
Since both of these are furthest south it is more difficult to measure the correct distance between them.
The continents that were the hardest to locate were Antarctica and Australia because they are both the ones that are the furthest south, making it more challenging to calculate the proper distance between them.
A continent is a huge, continuous landmass on the surface of the Earth, typically divided by oceans or other major bodies of water. Africa, Antarctica, Asia, Europe, North America, Australia, and South America are the seven continents of the world. In terms of topography, climate, culture, and biodiversity, each continent is distinct. For instance, Asia is home to the Himalayas, the world's highest mountain range, while Africa is renowned for its huge savannas and diverse animals. While Australia is well known for its distinctive flora and wildlife, Europe is known for its historical sites and artistic creations.
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Find the number of moles of water that can be formed if you have 154 mol of hydrogen gas and 72 mol of oxygen gas.
Answer:
The answer is 144 mol.
Explanation:
"72 mol of oxygen will form only 144 mol of water, and 10 mol of hydrogen remain in excess, so the limiting reactant is oxygen and hydrogen is in excess."
two students are working together to build a birdhouse. Student 1 applies a force of 10 N to a wooden board in order to slide it across the table to student 2. If the force of fraction resisting the student ´s push is 4 N, what is the net force acting on the board?
Answer:
6
Explanation:
if there is 10n and the friction is 4n on the table then it is 6n.
i hope this helps you! :)
Certain gases in the atmosphere trap heat on Earth.
What is the name of this phenomenon?
cooling period
the greenhouse effect
global warming
glacial melting
if right i give brain thx and 5 star
Answer:
Greenhouse
Explanation:
Which of the elements below has the largest electronegativity? Na, Mg, S, P?
HURRY!!!
Answer:
Electronegativities generally decrease from top to bottom within a group due to the larger atomic size.
Of the main group elements, fluorine has the highest electronegativity (EN= 4.0) and cesium the lowest (EN=0.79).
Explanation:
Sulfur has the largest electronegative element. Therefore, option C is correct.
What is electronegativity?Electronegativity is a measure of an atom's ability to attract electrons toward itself in a covalent bond, and it generally increases as you move across a period from left to right in the periodic table.
The type of bond that exists between atoms will depend on the electronegativity of the system.
Out of the given elements, S (sulfur) has the largest electronegativity. Sulfur has an electronegativity value of 2.58 on the Pauling scale, while Na (sodium) has an electronegativity value of 0.93, Mg (magnesium) has an electronegativity value of 1.31, and P (phosphorus) has an electronegativity value of 2.19. Therefore, option C is correct.
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A balloon moves vertically upward at
5 m/s. This is an example of ?
A.speed
B. Velocity
C. Acceleration
D.Velocity and acceleration
Answer:
B. Velocity
Explanation:
The answer is Velocity because the def of velocity is the rate of constant speed in a given direction. I hope this helps, have a good night.
Which temperature represents the highest average kinetic energy of the particles in a sample of matter?
Answer:
41 Which temperature represents the highest average kinetic energy of the particles in a sample of matter? (1) 298 K (3) 27°C (2) 267 K (4) 12°C
Explanation:
highest average kinetic energy highest temperature
Answer:
the answer is 27
Explanation:
Which of the following elements is not a diatomic molecule?
O carbon
O nitrogen
O chlorine
O hydrogen
What evidence do you need to determine that two rocks have some similar minerals because the minerals from the original rock was eroded then it was later compressed with other minerals to form a different rock.
Answer:
It comes from same parent material.
Explanation:
The two rocks have some similar minerals which indicates that they are comes from the same parent material but with the passage of time it is mixed with other minerals due to which they are some different in composition from one another so we can conclude that they comes from the same parent material due to the presence of some similar minerals.
C3H8 + 502 -->3 CO2 + 4H20 In the equation, what is the mole ratio of reactants?
The piece of metal is magnetic
Answer:
Explanation:
Magnetic materials are always made of metal, but not all metals are magnetic. Iron is magnetic, so any metal with iron in it will be attracted to a magnet. Steel contains iron, so a steel paperclip will be attracted to a magnet too. Most other metals, for example aluminium, copper and gold, are NOT magnetic.
A person rides in an elevator.
What is the equal and opposite force for the Earth's force of gravity pulling down on the person as
described by Newton's third law?
Answer:
Normal force
Explanation:
normal force always perpendicularly points away from a surface
Normal force is the equal and opposite force for the Earth's force of gravity pulling down on the person as described by Newton's third law.
What is force?Force is defined as a cause which is capable of changing the motion of an object. It can cause an object which has mass to change it's velocity. It is also simply a push or a pull . It has both magnitude as well as direction.Hence, it is a vector quantity.
It has SI units of Newton and is represented by'F'.Newton's second law states that force which acts on an object is equal to momentum which changes with time. If mass of object is constant, acceleration is directly proportional to net force acting on an object.
The concepts which related to force are thrust and torque .Thrust increases the velocity of an object and torque produces change in rotational speed of an object.
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Explain how light is produced in neon signs.
Answer:
The energy that makes light is 'produced' when you pass a high-voltage alternating current through a low-pressure gas sealed in a glass tube.
Explanation:
What stage in the rock cycle is between metamorphic rock and igneous rock
Answer:
sedimentary rock
Explanation:
Because there are three stages, first igneous rock changes into either sedimentary rock or meatamorphic rock.
__ has mass and takes up ____ i need help pls
Answer:
Matter has mass and takes up space.
Explanation:
Matter is everything around you. Atoms and compounds are all made of very small parts of matter.
Mass is a measure of the amount of matter in an object.
A résumé should include your date of birth. True O False
Answer:
True a resume should i.
Answer:
The answer is false on edg
Is party mix a example of a mixture
Answer/Explanation:
Yes a party mix is an example of a mixture. Hence, the word party MIX. To be more specific it is a heterogenous mixture because its components are not evenly separated through out the substance.
Which body parts don’t fossilize because animals tend to consume them?
A.
bones
B.
muscles
C.
shells
D.
teeth
Answer:
b. muscles is the answer
Explanation:
muscles is a meat, animals eat meat
What is the empirical formula of a molecule containing 24% carbon (C), 6%
hydrogen (H), and 70% chlorine (CI)?
O A. CH3C1
B. C2H6Cl2
C. C24H6C170
O D. CHCI
SUBMIT
Answer:
Empirical formula is CH₃Cl.
Explanation:
Given data:
Percentage of hydrogen = 6%
Percentage of carbon = 24%
Percentage of chlorine= 70%
Empirical formula = ?
Solution:
Number of gram atoms of H = 6/ 1 = 6
Number of gram atoms of C = 24 /12= 2
Number of gram atoms of Cl = 70/ 35.45 = 2
Atomic ratio:
C : H : Cl
2/2 : 6/2 : 2/2
1 : 3 : 1
C : H : Cl = 1 : 3 : 1
Empirical formula is CH₃Cl.
Answer:
CH3Cl
Explanation:
a-p-e-x
Energy is defined as...
A.
the ability to do work.
B.
the ability to dissolve in water.
C.
the mass of a substance times its acceleration.
D.
how radioactive a substance is.
Answer:
A
Explanation:
the ability to dissolve in water
Answer: B.
Explanation: The ability to do work
Please help me vote you brainiest
Answer:
If two forces act on an object in the same direction, the net force is equal to the sum of the two forces. This always results in a stronger force than either of the individual forces alone
BRAINLIEST AWARD PLZ HELP :)
Answer:
babe give us our last brainliest lol
Explanation:
science stuff
what is the
formula and valency of
thiosulphate
A popular radio station broadcasts with a frequency of 94.7 MHz. What is the
wavelength of the broadcast? (1 MHz = 1x106 Hz).
Answer:
λ = 0.032×10² m
Explanation:
Given data:
Frequency of broadcasts = 94.7 MHz
Wavelength of broadcasts = ?
Solution:
Frequency of broadcasts = 94.7× 10⁶ Hz
Formula:
Speed of wave = frequency × wavelength
3×10⁸ m/s = 94.7× 10⁶ Hz × λ
λ = 3×10⁸ m/s /94.7× 10⁶ Hz
Hz = 1/s
λ = 0.032×10² m
Answer: FM: 3.17m Am: 3.66m
Explanation:
Wood and a cement block are considered to be transparent and are good conductors of electricity.
true or false?
Answer:
ITS FALSE electricity doesn't travel through wood same with cement!
Which metal would form a stronger metallic bond?
A.sodium
B.tungsten
C.strontium
D.lithium
Answer:
c
Explanation:
write the chemical reaction and return the chemical equation: Ammonia when it interacts with oxygen produces nitric oxide (II) and water
Answer:
NH3 + 02 > NO + H2O
Explanation:
Why is gunshot residue important for a forensic scientist? What are the potential complications with this type of evidence?
FORENSICS
Answer:
Gunshot residue is important to forensic scientists because it can help measure the firing distance of a weapon, or if someone has fired a weapon lately based on what's on their hands. The potential complications of this evidence include it being uncertain if the residue is from another firing. This type of evidence can also be uncertain in a courtroom when firing distance is drawn into question.
Explanation:
A triple bond has _____
shared electrons.
8
4
2
6
Answer:
8
Explanation: