Which of the following is NOT evidence of a chemical reaction
A. rotting food
B. wax burning in a candle
C. Bubbles forming when Alka Seltzer is placed in water
D. Steam from your shower condensing into water droplets on your mirror

Answers

Answer 1

Answer:

a I believe

Explanation:

Have a good day


Related Questions

middle one! please help. i’ll do anything.

Answers

Answer:

I believe the answer would be weathering

Answer:

Erosion

Explanation:

Because....

Deposition is the action of deposing someone, especially a monarch.

weathering is the process of wearing or being worn by long exposure to the atmosphere.

What is the relationship between temperature and reaction rate?​

Answers

Explanation:

Temperature has a direct relationship with reaction rate. The higher the temperature the faster the rate of reaction of a system.

For every 10°C rise in temperature above the room temperature, it has been found that reaction rates becomes double or triple. When the temperature of a reacting system increases, the kinetic energy of each of the reacting particles increases. The frequency of collision and effective collision also increases per unit of time. Many of the reacting particles will acquire an energy greater than or equal to the activation energy of the reaction.

PLZZZ I NEED HELP THIS IS DUE AT 4:00 PM


Shane can run the length of a football field (100 yards) in 12 seconds. What is Shane’s speed?

Answers

Answer:

speed = distance/time

100 yards =91.5 metres

=91.5/12=7.625m/s

Answer:

17.05 MPH or 7.62 MPS

Explanation: I am not sure what one you are wanting, either in miles per hour or meters per second

Which law tells us that the youngest sedimentary layers are on the top and the oldest are on the bottom? None of the above The Law of Superposition The Law of Horizontal Originality The Law of Vertical Position​

Answers

Nolur acil lütfen yalvarırım sana

How many
particles would
be found in a
2.1 mol sample
of Aluminum
phosphate?

Answers

I have no idea  but but whats your lucky number

How do young predators learn how to hunt?

by strengthening their jaws

by playing with each other

by developing keen vision

by being fed by their mothers

-

pls help im on an exam--

Answers

Answer:

by playing with each other

Explanation:

the play fight and stuff so when the get older the hunt and stuff yk

Answer:

Playing with each other

Explanation:

Kinda like bear Cubs they play rough but if I’m wrong it gonna be by being fed by their mothers if I’m wrong

What do you have to do to change an atom labeled + ion or - ion into a neutral atom?

Answers

Answer:

to change an atom labeled + ion or -ion into a neutral atom, an electron is either added or removed from it

Hans observed properties of four different waves and recorded observations about each one in his chart.

A 2-column table with 4 rows. The first column labeled Wave has entries W, X, Y, Z. The second column labeled Observations has entries scatters through a small opening to form a ray of light, bounces off a mirror, changes colors as it passes through a crystal, bends as it passes through an object.

Which statement is best supported by the table?
Wave W is being reflected, Wave X is being refracted, and waves Y and Z are being diffracted.
Wave X is being diffracted, Wave Z is being reflected, and waves Y and W are being refracted.
Wave X is being reflected, Wave Z is being refracted, and waves Y and W are being diffracted.
Wave W is being diffracted, Wave X is being reflected, and waves Y and Z are being refracted.

Answers

Answer/Explanation:

Wave W is being diffracted, Wave X is being reflected, and waves Y and Z are being refracted.

Classify each of the following reaction as one of the 5 types: 2 Mg + O2 + 2 MgO O double replacement O decomposition O synthesis combustion O single replacement​

Answers

Answer:

Synthesis

Explanation:

 The reaction:

                 2Mg + O₂   →   2MgO

This reaction above is a synthesis or combination reaction. In such reaction, several products combines to give a single product.

The formation of a single product from two or more reactants is classified under this type of reaction

The driving force for this reaction type is the large and negative heat of formation of the product.

In which part of the plant does photosynthesis occur? ​

Answers

Answer:

Photosynthesis takes place in the chloroplasts of the plant!!

Explanation:

I hope this helps!

Answer:

In plants, photosynthesis takes place in chloroplasts, which contain the chlorophyll. Chloroplasts are surrounded by a double membrane and contain a third inner membrane, called the thylakoid membrane, that forms long folds within the organelle.

Explanation: oh oh i know this!!!!

pls help
Beryllium has a specific heat of 1.825 J/(g . °C). How many joules of heat energy are required to raise the temperature of 2.300 grams of beryllium from 22.00 to 60.00°C?

Answers

Heat required to raise the temperature = 159.505 J

Further explanation

Given

c = specific heat of Beryllium = 1.825 J/g C

m = mass = 2.3 g

Δt = Temperature difference : 60 - 22 = 38 °C

Required

Heat required

Solution

Heat can be formulated

Q = m.c.Δt

Input the value :

Q = 2.3 x 1.825 x 38

Q = 159.505 J

does energy transfer always result in phase change

Answers

These energy exchanges are not changes in kinetic energy. They are changes in bonding energy between the molecules. "If heat is coming into a substance during a phase change, then this energy is used to break the bonds between the molecules of the substance.

Which elements families are most likely to react with one another?

Answers

:

alkali metals will

Pollute means “to make impure.” Pollution is “the act of polluting.” If the suffix -ant means “something that performs an action,” what is a pollutant?

Answers

Answer:

something that makes another thing impure

Explanation:

B. Organic sedimentary rock
C. Chemical sedimentary rock
6. What type of sedimentary rock is fossiliferous limestone?
A. Clastic sedimentary rock
B. Organic sedimentary rock
C. Chemical sedimentary rock

Answers

Answer:

A. Clastic sedimentary rocks

Explanation:

Chemical form = CaCO3

Clastic sedimentary rocks form from the accumulation and lithification of mechanical weathering debris. Examples include: breccia, conglomerate, sandstone, siltstone, and shale.

Hope this helps! :)

After a certain pesticide compound is applied to crops, its decomposition is a first-order reaction with a half-life of 56 days. What is the rate constant, k, for the decomposition reaction?

Answers

The rate constant, k, for the decomposition reaction :  k = 0.0124 / days

Further explanation

Given

The half-life of 56 days

Required

The rate constant, k

Solution

For first-order, rate law : ln[A]=−kt+ln[A]o

The half-life :  the time required to reduce to half of its initial value.

The half life :

t1/2 = (ln 2) / k

k = (ln 2) / t1/2

k = 0.693 / 56 days

k = 0.0124 / days

The rate constant for the decomposition reaction has been 0.0124/days.

The rate constant has been given by;

log [Final concentration] = kt + log [Initial concentration]

k has been the rate constant, and t has been the time.

The initial concentration has been 1, after the half life period the concentration  has been half i.e. 0.5 .

The given half life has been 56 days.

The rate constant can be calculated as:

log 1 = k(56) + log 0.5

k(56) = 0.693

k = 0.0124/days.

The rate constant for the decomposition reaction has been 0.0124/days.

For more information about the rate constant, refer to the link:

https://brainly.com/question/23184115

What is the fancy psychological term for "mental process"?
computation
cognition
telecommunication
ESP

Answers

Answer:

cognition

Explanation:

give me brainliest pls

how much energy would be lost by 23 g of water if it was heated until it was 78 degrees celsius and then allow to cool down to 27 degrees celsius

Answers

Answer:

Q = -4903.14 j

Explanation:

Given data:

Mass of water = 23 g

Initial temperature = 78°C

Final temperature = 27°C

Heat lost = ?

Solution:

Specific heat capacity of water is 4.18 J/g.°C

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT =  27°C - 78°C

ΔT = -51°C

Q = 23 g × 4.18 J/g.°C  × -51°C

Q = -4903.14 j (negative sign shows heat is released)

Am I the only one who waits for a weird question to pop up and answer it?

Seriously, let me know.

Answers

Answer: those are the best questions to answer kfnmbysjghfbs they are literally so unnecassary, but the teaaaaaaa

Explanation:

what element is [Kr]5s24d105p2

Answers

Iodine would be your answer!!!

[Kr]5s²4d10⁵p² represents iodine element. The fundamental components of matter are thought to be the elements.

What is element?

A material is considered an element if it cannot be divided into two or even more simpler compounds by any kind of chemical process, including the use of light or warmth. For instance, when melting the chunk of gold, it nevertheless melts but remains as the precious metal element. 

The fundamental components of matter are thought to be the elements. There are currently 118 known elements, 94 of which are found in nature while the remaining 24 are created artificially. [Kr]5s²4d10⁵p² represents iodine element.

Therefore,  [Kr]5s²4d10⁵p² represents iodine element.

To know more about element, here:

https://brainly.com/question/29792173

#SPJ2

What is the best description of the role of decomposers in the carbon cycle?


They release the carbon that remains in the bodies of dead organisms.


They absorb carbon from carbon dioxide in the atmosphere.


They change carbon dioxide into a form that organisms can use.


They prevent carbon from escaping into the atmosphere.

Answers

Answer:

A

Explanation:

I got done taking the quiz If I could Show U I would but the answer is a

Answer:

The answer is "They release the carbon that remains in the bodies of dead organisms.".

Explanation:

Calculate the mass of 4.60 x 10^25 atoms of neon?

Select one:
a. 0.264 g
b. 5.54 x 10^2 g
c. 1.54 x 10^3 g
d. 0.0382 g

Answers

I think it’s B 5.54 x 10^2g

1.54 x [tex]10^3[/tex] g is the mass of 4.60 x [tex]10^{25}[/tex] atoms of neon.

What are moles?

A mole is defined as 6.02214076 × [tex]10^{23}[/tex]of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.

1 mol of atoms = 6.02214076 × [tex]10^{23}[/tex]

Moles of neon in 4.60 x [tex]10^{25}[/tex] atoms = [tex]\frac{mass}{molar \;mass}[/tex]

[tex]\frac{4.60 X 10^{25}}{ 6.02214076 X 10^{23}}[/tex]

0.7638479709 = 76.38 mol

The molar mass of neon is 20 g/mol

76.38 mol x 20 g/mol

1.54 x [tex]10^3[/tex] g

Learn more about moles here:

https://brainly.com/question/8455949

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NEED HELP ASAP, how many molecules are in 4nh3​

Answers

Answer:

maybe 16?

Explanation:

IF CORRECT ILL GIVE BRAINLIEST

all the drop boxes say compound & element. pick either or for each one.

Answers

Answer:

Hydrogen = element

Carbon dioxide = compound

Water = compound

Zinc = element

Nitrogen = element

Salt = compound

Helium = element

Carbon monoxide = compound

Explanation:

An element and a compound are different when it comes to the types of atoms they possess. An element has only one type of atom while a compound has two types of atoms. For example, Hydrogen is an element because it has two atoms of the same type and that is, the "Hydrogen atom."

On the contrary, Carbon dioxide has one carbon atom and two atoms for Oxygen. Therefore, it is a compound because it has two types of atoms: Carbon atom and Oxygen atom.

Water has two atoms of Hydrogen and one atom of Oxygen. Therefore, it is a compound because it has two types of atoms: Hydrogen atom and Oxygen atom.

need to turn this in, in 10
mins please what’s the answer...thank you

Answers

Answer:

21 oxygen atoms

Explanation:

I think it is 7 but i am not sure

Explanation:

What is the main factor that determines how well two substances mix together?

Answers

Answer:

I believe it is density.

Explanation:

Hope this helps!

Why are the bacteria in a termite’s stomach considered mutualistic and not parasitic?

Answers

In commensalism the smaller partner benefits from the relationship, with no fitness effect on the host. There are fitness gains for both partners in mutualism, and a parasite benefits by exploiting but not directly killing its host.

hope this helps ^^

Help if u good at science lol:)

Question 11 of 35
What does a meteoroid become when it enters Earth's atmosphere?
O
A. A comet
O
B. A moon
O
C. A meteor
D. An asteroid

Answers

Answer:

D is your answer

Explanation:

Answer:

C:  a meteor

Explanation:

Compare the amount of copper predicted in part A with the amount measured in part B. What percentage of the predicted amount was obtained? Why aren’t these values the same?

Answers

Answer:

Explanation:

Because the experiment has an different independent and dependent variable and each part has  a different result of what type of copper or what  type of control you are using for you experiment.

PLS MARK BRAINLIEST IF CORRECT I WORKED HARD ON THIS ANSWER,HAVE A NICE DAY/NIGHT <3

Answer:

Because the experiment has a different independent and dependent variable and each part has a different result of what type of copper or what type of control you are using for your experiment.

ipt Which most likely determines the shape of an ionic compound's crystals?
O A. the compound's melting point
O B. the compound's boiling point
O C. the electronegativity of the compound's elements
O D. the ratio and size of the compound's ions

Answers

Answer:

d. the ratio and size of the compound's ions

Explanation: The crystal structure of an ionic compound depends on the sizes of the cations and anions.  and  ratio of cations to anions.

HOPE THAT HELPS

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