Answers
Answer:
A chemical change happens when one chemical substance is transformed into one or more different substances, such as when iron becomes rust. Chemical changes occur through the process of chemical reactions, and the resulting substances have different properties because their atoms and molecules are arranged differently.
Explanation:
A chemical change happens when one chemical substance is transformed into one or more different substances, such as when iron becomes rust. Chemical changes occur through the process of chemical reactions, and the resulting substances have different properties because their atoms and molecules are arranged differently.
Related Questions
which is a reactant in the cellular respiration reaction
Answers
Answer: Oxygen and glucose are both reactants in the process of cellular respiration.
Explanation: Oxygen and glucose are both reactants in the process of cellular respiration. The main product of cellular respiration is ATP; waste products include carbon dioxide and water.
Answer: B or Oxygen
Explanation:
Edge 2021
A chemical change always involves a change in the ____ of matter
Answers
Here you go rats....
Answers
Answer: Why exacly am i a rat
Explanation:
,....
but thanks
Answer:
what!!!??????
Which lists the fractions 4/7 5/9 and 2/3 in order from least to greatest
Answers
As long as the question ask u from the least to the greatest
So imagine urself going up by a stairs so u will start from the bottom the smallest number which is 4/7 to the largest 2/3
Fakeium has four isotopes found on Earth but they’ve only been recently discovered. Do your part as a scientist and calculate the average atomic mass for fakeium so it can be added to the periodic table.
Fa - 85 is 31% of all the isotopes found.
Fa - 86 is 12% of all the isotopes found.
Fa - 87 is 38% of all the isotopes found.
Fa - 88 is 19% of all the isotopes found.
CHOICES:
84.65 g
87.00 g
87.50 g
86.45 g
Answers
Answer:
86.45 g
Explanation:
Given data:
Percent abundance of Fa - 85 = 31%
Percent abundance of Fa - 86 = 12%
Percent abundance of Fa - 87 = 38%
Percent abundance of Fa - 88 = 19%
Average atomic mass of Fa = ?
Solution:
Average atomic mass = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass)+ (abundance of 3rd isotope × its atomic mass) + (abundance of 4th isotope × its atomic mass) / 100
Average atomic mass = (31×85)+(12×86) +(38×87)+(19×88) /100
Average atomic mass = 2635 +1032 +3306 +1672 / 100
Average atomic mass = 8645 / 100
Average atomic mass = 86.45
3.
Which statement(s) is/are TRUE for all chemical reactions?
Answers
Answer:
the statement is or are true for all chemical reaction is false
Explanation:
if you think the answer is correct then mark me as brain list
what causes the lithospheric plates to move
Answers
Answer:
The heat from the Earth's cores radioactive process makes the lithospheric plates move sometimes away or toward each other.
Hope it helps :)
Answer:
convection currents in the mantle
Explanation:
Convection currents in the mantle are always moving, and make the plates move too. The plates are resting on top of the mantle, which is where the convection currents are, which make them move along with the magma.
Explain the differences between an element, a compound, and a mixture – how many different types of atoms can be found in each? How are the atoms arranged?
Answers
Answer:
An element is something sound in nature a compound is something with more then one specific atom and can be made or found in nature, and a mixture is a few different atoms that can be separated from each other
How many significant figures are in 15200 mL
Answers
Answer:
3
Explanation:
The zeros after 152 are not significant.
Where does the carbon that you breath out as carbon dioxide come from? How does the Carbon enter your body?
Answers
Which statement best describes a physical property?
A physical property can be measured without changing the chemical makeup of the material
A physical property describes the product of a reaction between two substances.
A physical property describes the substance in terms of energy content.
A physical property of a substance varies from sample to sample
Answers
what is the democritus findings?
Answers
nvm
nvm
nvm
nvm
nvm
nvm
nvm
How are nymphs different from adult insects?
Answers
Answer:
Explanation:
the nymph looks like a smaller version of the adult insect, & it also has no wings & molts.
1.
Sabrina was asked by a classmate why she would place hydrogen in the first column of the periodic tab le. Which of the following reasons could she give as a response?
1. Hydrogen combines with chlorine in the same atomic ratio as sodium.
II. Hydrogen is a gas at room temperature.
III. Hydrogen forms diatomic molecules.
А A
I and II
B. Oll and III
COI only
D. Ill only
Answers
Answer:
The correct option is;
C. I only
Explanation:
Given that in a chemical reaction, the number of valence electrons in the outermost shell of an atom determines the ratio in which the atom combines with other atoms to have the stable 8 (octet) valence electrons in their outermost shell, we have that atoms in a group combines with atoms in other groups, where possible, in the same ratio.
Therefore, sodium, which is in the first column (group I) combines with atoms of elements in other groups, in the same ratio as atoms of the other elements of the column 1
Since hydrogen combines with chlorine in the same ratio as sodium which is from the first column, hydrogen is also an element from the first column.
Help!
The quantity of matter anything contains.
A. weight
B. mass
C. volume
Answers
Answer: B. Mass
Explanation: The quantity of matter anything contains is called mass.
How is eight molecules of Sulphur written
8S8 or 8S
Answers
8S8 does not make senes
Beside, is this element is existed.
It means that u have 64 molecules of Sulphur.
To solve this we must be knowing each and every concept related to molecule. Therefore, eight molecules of Sulphur is written as S[tex]_8[/tex].
What is molecule?A molecule is an electrically neutral collection of two or more atoms linked together by chemical bonds. Here are several instances of molecules, as well as an explanation of the differences between particles, compounds, and ions.
An atom is indeed the element's smallest unit. A single element's atoms all have the same amount of protons. Atoms cannot be separated further using any chemical process. A molecule, on the other hand, is the basic unit of such a pure material. Eight molecules of Sulphur is written as S[tex]_8[/tex]. 8s is wrong representation.
Therefore, eight molecules of Sulphur is written as S[tex]_8[/tex].
To know more about molecule, here:
https://brainly.com/question/14130817
#SPJ2
9.Which part of the conductivity apparatus should you never touch
Answers
Answer:B- Leads
Explanation:
just did the quiz and got it right
what property of does honey possess that makes it resist from flowing
Answers
in form of solid form honey possess
Answer:
Honey
Explanation:
Honey is an ancient remedy for the treatment of infected wounds, which has ... The antimicrobial properties of honey have been known to humans for ...
Abstract
Introduction
Composition
Honey production and ...
Physical properties of honey
Honey as food
Microbes in honey
Doctors are seeing an alarming increase in the number of cases of tuberculosis (TB) that is resistant to drugs commonly used to treat the disease. TB is difficult to pass to other people without prolonged contact, but it is often fatal if it is not treated.
How will doctors most likely respond to someone who has an active case of drug-resistant tuberculosis?
Answers
Answer:
Doctors will use other drugs that are known to be able to treat TB, even if they are less effective than the common drugs.
Explanation:
When a case of drug resistance is established, the doctor has to change the prescription and give other drugs that are also known to be effective against the organism.
Bacterial drug resistance is a common clinical experience. Many established drugs have been found to be ineffective in treating common infections leading to the continuous quest for improved antibiotics that are active against most organisms.
When doctors discover that someone who has an active case of drug-resistant tuberculosis, the doctor may need to change the prescription to other drugs that are also known to be effective against Mycobacterium tuberculosis, the causal agent of tuberculosis.
Learn more: https://brainly.com/question/2124849
give me the if, then statement to the picture below.
I NEED HELP ASAPPPP
Answers
Answer:
if we take away the web, we can slide down
Explanation:
HELP ASAP PLEASE!!!! i really need help! :( Please help me this is due at 8:45 pleaseeeee!!! show all work!!
Answers
The photoelectric effect is an electron coming out of a metal because of electromagnetic radiation
One type of electromagnetic radiation is light
Frequency (f): the number of waves / second
Can be formulated :
[tex]\tt v=\lambda\times f[/tex]
v=fast wave propagation ⇒ speed of light =3.10⁸ m/s
λ= Wavelength
The energy can be formulated as
E = h x f
Where
E = energy of light, J
h = Planck's constant (6,626.10⁻³⁴ Js)
f = Frequency of electromagnetic waves, Hz
1. λ = 4.82 x 10⁻¹⁰ m
the frequency =:
[tex]\tt f=\dfrac{v}{\lambda}=\dfrac{3.10^8}{4.82\times 10^{-10}}=6.22\times 10^{17}[/tex]
2. The energy
[tex]\tt E=6,626.10^{-34}\times 6.22\times 10^{17}=4.12\times 10^{-16}~J[/tex]
3. λ = 4.32 x 10⁻⁷ m
[tex]\tt f=\dfrac{3.10^8}{4.32\times 10^{-7}}=6.94\times 10^{14}\\\\E=6.626\times 10^{-34}\times 6.94\times 10^{14}=4.598\times 10^{-19}~J[/tex]
When energy changes from one form to another, it is called energy
A.radiations
B.transmissions
C.solutions
D.transformations
Answers
Answer:
(see below)
Explanation:
Using the process of elimination:
It's not energy radiations because radiation is a way energy is transferred.
It's not energy transmissions because that's the transfer of energy from one medium to another, like the sun to a black construction paper through radiation. There are three ways of transmission: radiation, convection, and conduction.
It's not solutions because a solution is a homogenous mixture where it is uniform in composition and appearance throughout. Also, the term "energy solutions" makes no sense whatsoever.
It's most likely energy transformations because energy transformation, also called energy conversion, is the process of changing energy from one form to another.
Which is a form of matter?
A. electricity
B. energy
C. light
D. water
Answers
Answer:
D
Explanation:
Water is a liquid
Answer:b energy
Explanation: i hope its right
(15 Points!) Match the electron configurations with the correct element name.
[tex]1s^22s^22p^63s^23p^63d^74s^2[/tex]
[tex]1s^22s^22p^63s^23p^63d^{10} 4s^24p^64d^15s^2[/tex]
[tex]1s^22s^22p^63s^23p^63d^{10}4s^24p^64d^{10}4f^45s^25p^66s^2[/tex]
[tex]1s^22s^22p^63s^23p^63d^{10}4s^24p^2[/tex]
Choices:
Cobalt (Co)
Germanium (Ge)
Yttrium (Y)
Neodymium (Nd)
Answers
Answer:
Using a lil common sense bcz I have no book sense on this...
Explanation:
Cobalt (Co) - 1
Germanium (Ge) - 4
Yttrium (Y) - 2
Neodymium (Nd) - 3
I Just looked at which comes before which in the periodic table and obv the one with less length from (1-4) is the lowest in the periodic table continuing... yah digg... lol
Arrange following steps of the Scientific Method into the proper order.
11. State the Problem
2. Conclusion
1 3. Data analysis
14. Hypothesis
15. Research
1 6. Experiment/data collection
Answers
-state the problem
-hypothesis
-experiment/data collection
-data analysis
-research
-conclusion
Hope this helps, I’m pretty positive this is correct as I just recently completed lab reports lol
Concentrated hydrochloric acid has a molarity of 12.0 mol/L. What volume of it do you need to
make 1.5 L of a 0.50 mol/L solution?
Answers
Answer:
0.063 L
Explanation:
The dilution formula is M₁V₁ =M₂V₂, where M is mol/L and V is L.
We need to find V₁ so our equation is V₁ = M₂V₂ / M₁.
[tex]V1 = \frac{0.50M*1.5L}{12.0M} = 0.0625 L[/tex]
Round to the lowest significant figures = 0.063 L
How many protons electrons and neutrons does an atom with atomic number 50 and mass number 125 contain
Answers
Answer:
A.
Explanation:
50 protons,50 electrons, 75 neutrons.
Hope this helped!
May I get brainliest I need to rank up :)
125-50=75
50 protons
50 electrons
75 neutrons
(First to answer gets some good) Order the following components of the universe from largest to smallest: Moon, planet,universe,star,galaxy,nebula,comet!
Answers
Answer:
Universe, galaxy, solar system, star, planet, moon and asteroid.
Explanation:
You're welcome!
Ionic solids have high values of enthalpy of fusion. Why?
Answers
Which involves a chemical change?
1.separating hydrogen and oxygen from water
2.evaporating sugar from sweetened water
3.filtering sand from water
4.distilling pure water from salt water
Answers
Answer:
1
Explanation:
because you are changing the chemical makeup of the water by pulling out the two chemicals