Answer:
its a or B
hope this helps
Explanation:
The chemical reaction of the rusting can be slowed down if the reactants decreased. Therefore, option (B) is correct.
What is a chemical reaction?A chemical reaction can be described as a process that brings the chemical transformation of one chemical substance to another chemical substance. The chemical reactions cause chemical changes that involve the rearrangement of electrons in order to form and break bonds between atoms.
The substances which are primarily used in a reaction are called reactants. Chemical reactions yield products, which possess properties different from the reactants.
Chemical reactions take place at a certain rate of reaction at a given temperature, pressure, and concentration. The rates of reaction increase with the increasing temperature of the reaction as more activation energy will be available for collisions.
The rusting of the iron in which iron oxide is formed will slow down if the reactants (iron or oxygen) decreased.
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jenny turned on the fan in her bedroom. what energy transformation took place when she turned on the fan
Answer:
Kinetic energy
Explanation:
Kinetic energy is energy when something is in motion
Which is the best way to define wind?
a
Wind is the movement of air from areas of low pressure to areas of high pressure
b
Wind is the movement of air to a colder area in the atmosphere.
c
Wind is the movement of air from areas of high pressure to areas of low pressure.
d
Wind is the movement of air pushed around and bouncing off Earth's surface.
A student used a portable electric drill to remove screws from a broken wooden table. He noticed that the screws holding the table together were warm to the touch after being removed from the wood. Which statement best explains this phenomenon?
A:Electrical energy from the drill was converted into chemical energy due to conductivity.
B:The process of removing the screw concentrated the thermal energy that was already present in the wood
Answer:
A.
Electricity can travel through metal, such as the screws, creating a conductor.
HELP PLS THIS IS DUE IN 15 MINUTES PLS PLS PLS!!! I WILL MARK BRAINLIEST IWTH THE BEST ANSWER!!!
List 2 Physical Changes & 2 Chemical Changes and explain why.
Answer:
A chemical change results from a chemical reaction, while a physical change is when matter changes forms but not chemical identity. Examples of chemical changes are burning, cooking, rusting, and rotting. Examples of physical changes are boiling, melting, freezing, and shredding.
Explanation:
Answer:
A chemical change results from a chemical reaction, while a physical change is when matter changes forms but not chemical identity.
physical changes are boiling, melting, freezing, and shredding.
Explanation:
The Same force is applied to a 300 kg go kart and 100 kg wagon at the beginning of the race. Which time is true about their acceleration
A. The go-kart and wagon will accelerate at the same rate
B. The go-cart and wagon will not accelerate
C. The wagon will accelerate at a faster rate
D. The go-cart with accelerate at a faster rate
Answer: Well!
Explanation: I was going to answer D but fverdell82156 got to it first! So I have to agree with him! It is D!
Uranium is a radioactive element that is highly unstable and it has a half-life of 4.5 billion years. Uranium comes in many different forms (shown below). Looking at the nuclear notations below, what is the neutron number of both of the elements below? What is the relationship of the two elements below?
A: U-235 has 235 neutrons, U-238 has 238 neutrons and they are isotopes of each other.
B: U-235 has 143 neutrons, U-238 has 146 neutrons and they are isotopes of each other.
C: U-235 has 235 neutrons, U-238 has 238 neutrons and they are ions of each other.
D: U-235 and U-238 have 92 neutrons and they are ions of each other.
Answer: c
Explanation:it just is
U-235 has 235 neutrons, U-238 has 238 neutrons and they are ions of each other. So the correct option is C.
What is uranium?Since more than 60 years ago, uranium, a heavy metal, has been employed as a plentiful source of concentrated energy. Uranium is as prevalent in the Earth's crust as tin, tungsten, and molybdenum, and it can be found in most rocks in quantities of 2 to 4 parts per million.
Seawater contains uranium, which may be extracted from the seas. German scientist Martin Klaproth made the discovery of uranium in the mineral pitchblende in 1789. Following the discovery of the planet Uranus eight years earlier, it was given that name.
In supernovae, uranium is thought to have been created around 6.6 billion years ago. Even though slow radioactive decay is uncommon in the solar system, it is the primary source of heat inside the Earth today, creating convection and continental drift.
Due to its great density, uranium is also used as radiation shielding, as counterweights for aviation control surfaces, and in boat keels. The melting point of uranium is 1132 °C. Uranium has the chemical symbol U.
Therefore the correct option is C.
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Which of the following is true with regard to sodium and potassium?
A
The both have three outer shell electrons.
B
They both have filled orbitals.
C
They tend to form anions.
D
They tend to form cations.
Sodium and potassium tend to form cations. Therefore, the correct option is option D among all the given options.
What is ions?An atom or molecule is said to be an ion if a number of the valence electrons have been acquired or lost, providing it a net negative or positive electrical charge. In other terms, a chemical species has an unbalanced ratio of protons (positive charge particles) to electrons (negatively charged particles).
Because there are more protons than electrons in a given species, cations are ions with a net positive charge. The equation for a cation is denoted by a superscript that includes the amount of the charge and the symbol "+" after the formula. If present, a number comes before the plus sign. If there is simply a "+" there, the fee is +1. Sodium and potassium tend to form cations.
Therefore, the correct option is option D.
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A scientist works for a drug company and runs experiments on their product with results that favor the company's product. This is an example of_________.
(A.) conflict of interest and confirmation bias.
(B.) getting the inside scoop about a product, buying company stock, and making a lot of money.
(C.) sound and reliable science practices.
(D.) all the above.
"A scientist works for a drug company and runs experiments on their product with results that favor the company's product. This is an example of conflict of interest and confirmation bias." Thus, option A is correct.
What is a conflict of interest?Conflict of interest has been defined as the situational circumstances where the individual or the company tries to get benefitted from the actions and behaviors that present the outcomes in favor of them. This includes manipulative strategies and steps.
The scientist manipulates drug experiments and their products to favor the company and shows biased investigations and methods that benefit the company by profiting and getting something from the official work.
Therefore, option A. conflict of interest is seen in the case.
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I need your help.
What is the basis of an organic molecule?
(A). The basic structure is the iron atom.
(B). The basic structure is the potassium atom.
(C). The basic structure is the carbon atom.
(D). The basic structure is a carbon monoxide molecule.
Answer:
I think c
Explanation:
Answer: C
Explanation: Its C because Life is based on carbon, organic chemistry studies compounds in which carbon is a central element. The properties of carbon make it the backbone of the organic molecules which form living matter. Carbon is a such a versatile element because it can form four covalent bonds.
AHHHH PLS HELP ME I BEG ILL DO ANYTHING
When going from a slower medium to a faster medium, light is bent _____.
A. toward the normal line
B. away from the normal line
Answer:
B. away from the normal line
Explanation:
"when light travels faster, it bends away from the normal, since it is entering a less dense medium. when light travels slower, it bends towards the normal, since it is entering a denser medium (Socratic)."
I hope this helps! :)))
Answer:
b. away from the normal line :) hope this helps <3
Explanation:
Help me guys plzlzlz
i think its d because 900+1200 is 2100, but im probably wrong for question 1
need help as soon as possible ill give brainliest!!!!!!!!!!!!!!!!
Answer:
The Answer is Magma
Isopropyl alcohol is a clear liquid with a density of 0.78 g/cm3. If the same small sphere (with a density of 0.88 g/cm3) is dropped in a beaker of isopropyl alcohol, predict whether the sphere will float or sink?
Which arrow or arrows represent reactions that demonstrate a conservation of mass and energy? Explain your answer
Answer:
i need a picture of ur question
Explanation:
determine the volume of a substance given that the density is 2.6 g/mL and its mass 5.5 g
Answer:
I am pretty sure the answer is 10g/cm3 .
Explanation:
There are 3 different answers you can pick from.
no coefficient
2
3
Which of the following statements is true?
a. An insulator speeds up the transfer of heat.
b. Radiation is the transfer of heat in solids.
c. All moving objects experience friction.
d. All work gains some energy as heat.
Answer:
C is correct
Explanation:
For example, you move your hands together you are creating friction.
If you have a parallel circuit with a battery (4 ohms), a light bulb (2 ohm), and a fan (3 ohms), how would you find the total resistance of the circuit?
Voltage is the same across each component of the parallel circuit. The sum of the currents through each path is equal to the total current that flows from the source. You can find total resistance in a Parallel circuit with the following formula: 1/Rt = 1/R1 + 1/R2 + 1/R3 +...
Answer:
resistance = 0.9230769230769231
Explanation:
The total resistance can be found by using the following equation:
1 / R = 1 / R1 + 1 / R2 + 1 / R3
Choose all the answers that apply.
The sun _____.
a. creates energy from fission reactions
b. creates energy through fusion reactions
c. transfers heat through radiation
d. is made of hydrogen and helium
e. uses its own mass to create energy
What’s the most historic thing that has happened in your lifetime?
Answer:
Uhh when I sleepwalk I guess I talk to my parents randomly and get in to stuff and I find it Hilarious what about u
Explanation:
Explain how scientist learned about the magnetic poles of the Earth.
Answer:
They learned because they keeped studying they would never give up and if they found something new or interesting they may have just studied it more.
Explanation:
Answer:
probably when something like a compass was accidentally invented Explanation:
Before you can solve a problem, the first thing you have to do is Question 2 options:
define the problem
build a prototype
design your solution
test your solution
What is a wet celled battery composed of? Give an example of a wet celled battery.
Answer:
A wet cell battery is a original type of rechargeable battery. an example for wet cell battery is a lead-acid battery
Which of the following statements is true based on an element with 7 valence electrons?
If you would like to view the Reference Material, click here.
The element is a stable metal.
The element is a reactive nonmetal.
The element is a stable nonmetal.
The element is a reactive metal.
Answer:
he element is a reactive nonmetal.
Explanation:
Who inspires you? Who do you aspire to be like?
Shark diving, bungee jumping, or skydiving?
What's your favorite cheesy pick-up line? Have you ever used it in real life?
What's your favorite Disney movie?
What is the weirdest scar you have and how did you get it?
Where did you and your best friend meet?
Which of your accomplishments are you most proud of?
What's the weirdest Wikipedia rabbit hole you've stumbled down?
Tell me about the best vacation you've ever taken.
What's your favorite physical attribute about yourself?
Friday night—would you rather stay in or go out?
Do you believe in ghosts?
What piece of art (book, music, movie, etc.) most influenced the person you are today?
Which would be harder for you to give up: coffee or alcohol?
What's the single best piece of advice you ever received?
Who's your best friend, and what do you love about him or her?
What's the greatest risk you've ever taken?
If you had 24 hours to do whatever you wanted in this city, what would you do?
What do you like about where you work?
What hobby have you always wanted to develop?
Answer: this seems like YOU need to answer on ur own.
Explanation:
What are some causes of climate change?
Compare and contrast the alkaline battery and a Zinc carbon battery. put in some other facts about them too. write somewhere around 2 paragraphs.
I'll mark brainlyest to whoever has the best answer and give them 50 points for helping me.
1. reaction that releases heat
outer ear
2. flow of electrons through a material toward a positive charge
compression
3. build up of electrons in a material
static electricity
4. part of the ear is responsible for capturing sound waves
exothermic
5. part of the sound wave where the molecules are pressed closely together
current electricity
calculate the density of an objects whose mass is 93.2 g and its volume is 4.67
Answer:
19.9571734475
Explanation:
Mass/Volume= Density
What is an important characteristic for chemicals released into the environment used to seed clouds?
Answer:
the rain
Explanation:
