Answer:
This is false.
Explanation:
This statement directly opposes the first law of thermodynamics which states that energy can neither be created nor destroyed, but can transfer from one source to another.
what does the zebra mussel do to affect the ecosystem
Answer:
The explanation of the type of situation would be characterized below.
Explanation:
Zebra mussels, therefore, have a direct as well as indirect (significant) impact on natural ecosystems. The much more significant impact is on the feed intake interaction including its mussel. Zebra mussels seem to be opportunistic feeders that analyze approximately one gallon of liquid or more per mussel.PLS HELPPP
why is CH3OH more polar than CH3CH2OH
Answer:
Explanation:
Polarity is about differencens in electronegativity. CH bonds have around the same electronegativity value so a CH bond is nonpolar. The more CH bonds there are in a molecule, the more nonpolar it is. Since CH3CH2OH has more carbon-hydrogen bonds than CH3OH, it is more nonpolar. With the same reasoning, since CH3OH has less CH bonds, it's more polar.
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Answer:
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What element is added to copper to make bronze? Why is this important for making bells?
Answer:
The correct answer is - tin.
Explanation:
Tin is the element that is mixed with copper to make bronze as bronze has many unique properties such as crisp sound quality and hardness. The hardness of the bronze allows them to make a good quality sound is come by adding tin to copper restricts the free flow of electrons of the copper atoms.
The pure metals have molecules present in an orderly manner and allow the electrons to free flow. This is why bell makers use bronze as it does not allow electrons to move freely which makes it hard and makes a good sound.
why is a moving car an example of kinetic energy
Answer:
the car is moving right so what does kinetic energy mean it means and object moving what is the car doing the car is MOVING
What is the purpose of a catalyst?
Answer:
option c
Explanation:
as catalyst increases the reaction while activation energy is inversely proportional to rate of reaction, so option c is correct
The purpose of a catalyst to lower the activation energy of a reaction.
What is catalyst?A type of chemical that, without becoming consumed by the process, speeding a chemical reaction or reduce the temperature as well as the pressure required to initiate one. The addition of a catalyst to speed up a reaction is known as catalysis.
What is activation energy?The bare minimum additional energy needed by a reactive molecule to transform into a product is considered as activation energy.
The purpose of a catalyst is to lower the activation energy of a reaction.
Therefore, the correct answer will be an option (C).
To know more about catalyst and activation energy.
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research the Greenhouse effect and how it relates to heat transfer.
Answer:
The greenhouse effect is a phenomenon of radiative transfer, the process by which the energy of light waves is exchanged in matter. Radiative transfer dictates what energy is reflected, absorbed, and emitted. The greenhouse effect: A summary of the heat transfer in the Earth's atmosphere
Explanation:
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which of these hypothesis is not falsifiable?
a. there is life on other planets.
b. our sun will burn out within the next billion years.
c. the universe is stagnant.
d. jupiter is the best planet in our solar system.
Answer: it is D
Explanation:its D cause that is a opinion it is not sientificly correct
Which choice is a biotic factor of an ecosystem?
A. sun
B. ants
C. air
D. soil
Why are liquids often dense?
Triphosphorous hexoxide formula
Answer:
P3O6
Explanation:
Tri=3 Hex=6
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How many molecules and atoms are in 0.5 moles of SO2?
Answer:
0.5 mole of a SO2 contains 3.01 into 10 ^23 molecules of So2.
Explanation:
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Based on what you have observed in the Gizmo, which of the following chemical equations represents photosynthesis?
A. Carbon dioxide plus water yields glucose (sugar) and oxygen.
B. Oxygen plus carbon dioxide yields water and glucose.
C. Glucose plus oxygen yields carbon dioxide and water.
D. Water plus glucose yields oxygen and carbon dioxide.
Answer:
A.....
Explanation:
Carbon dioxide plus water yields glucose (sugar) and oxygen.
based on the activity series, what are the predicted products of this reaction?
Pt (s) + H2O (l) ----->
Answer:
dk
Explanation:
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Which of the following is an example of a compound?
Select all that apply
H20
F2
C2H6
Ag
Is the answer H2O and C2H6?
Based on what you know, which element would you predict would most likely form an anion?
A. iron
B. tin
C. calcium
D. chlorine
Answer:chlorine
Explanation:
Anions are ions of non metals and the only non mental in that list is chlorine (group 7)
Based on what you have learned about currents, how do you think this mass of trash ends up in the Great Pacific Garbage Patch?
Looking at the map, what ideas do you have about why the trash is "trapped" in this location?
After which reaction. is there solid left in the reaction chamber
a)Sodium Azide
b)Ammonium Nitrate
c)Nitroglycerin
d)Both A & B
Answer:
B.
Explanation:
If we add more SO2 gas to the reaction chamber. To the left. The reaction would drive
backwards to re-establish equilibrium (more reactants made).
What is an algal bloom?
A. a growth of new algae
B. a type of floating algae
C. an overgrowth of algae
D.a type of flowering algae
Answer:
C im pretty sure. hope this helps
Give 2 reasons why is copper used for electrial wires
Answer:
Copper electrical wires are safer to use than wires made of most other conductive metals because they are resistant to heat. As you can see, copper is the preferred metal for electrical wires for several reasons. It has high electrical conductive; it's inexpensive; it's ductile; and it's thermal resistant.
You have 50 g of radioactive C-14. The half-life of C-14 is 5,730 years. How many grams would you have left after 5,730 years?
what is haber's process?
Answer:
method for procuring ammonia
Explanation:
In the Haber process, atmospheric nitrogen is converted to ammonia by reacting it with hydrogen (H2)
how many molecules are in 4 moles of He?
Answer:
⇒ n = 2.4088 × 10²⁴
- So, the no of atoms in 4 moles of helium is 2.4088 × 10²⁴.
Explanation:
What are the steps to naming an ionic compound with both a polyatomic ion and transition metal.
Answer:
Write the name of transition metal as shown on the Periodic Table. Write the name and charge for the non-metal. If you have a polyatomic ion, use the Common Ion Table to find and write the formula and charge.
Explanation:
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which of these is the smallest particle
Answer:
atom
Explanation:
A compound is atoms combined (or something combined) and a speck of dust is visible unlike the other two
Answer:
Atom
Explanation:
It would be the atom
If you took a spoonful of tea out of the cup, which would be more painful if it spilled on you? *
how does wind change the shape of earth surface?
Answer:
wind can cause rocks to erode and can expose more of the earth crust then before.
What is the purpose or role of the urinary and excretory systems?*
A. digest food materials that come into the body
B. filter and remove liquid and solid waste
C. transport wastes throughout the body. D.regulate the body using hormones
Explanation:
B. filter and remove liquid and solid waste
The red and yellow diamond in a NFPA sign represents what?
The red diamond tells how flammable the chemical compound is or how easily it catches fire.
The yellow diamond tells about reactivity how quickly the compound reacts with other materials.
If the spring constant is 12.6N/m and a spring is stretched by 0.25m, how much force has been applied?
Answer:
The magnitude of the applied force is 3.15 N
Explanation:
Hooke's law states that for small deformations, the change in dimensions, 'x', of an object is directly proportional to the force, 'F', of the acting load acting that bring about the deformation
Mathematically, Hooke's Law can be expressed as follows;
F = k·x
Where;
F = The applied load
k = The force constant of the object
x = The amount of deformation of the object
The given parameters are;
The spring's force constant, k = 12.6 N/m
The amount of stretching in the spring, x = 0.25 m
Therefore, we have;
The force applied, F = k·x = 12.6 N/m × 0.25 m = 3.15 N.