Answers
Answer:
A
Explanation:
Answer:
B
Explanation:
In a chemical reaction, the number of each element should be equal on both the reactant and product side.
Related Questions
Please Explain the Cell Cycle From 7th grade Iraq science.
Answers
Answer:
A cell cycle is a series of events that takes place in a cell as it grows and divides. ... The cell then leaves interphase, undergoes mitosis, and completes its division. The resulting cells, known as daughter cells, each enter their own interphase and begin a new round of the cell cycle.
Explanation:
what is the difference between fermentation and alcohol
Answers
Answer:
Unlike lactic acid fermentation where-in the end product is lactic acid, the 'waste' material in an alcohol respiration is ethanol (an alcohol) and CO2 (carbon dioxide). Human beings have already perfected the use of this process for commercial purposes like in the production of beer, wine and bread
Explanation:
In alcoholic fermentation, pyruvate changes to alcohol and carbon dioxide. This type of fermentation is carried out by yeasts and some bacteria.
Water is heated to boiling and water vapor (steam) is released. Chemical change or physical change?
Answers
Outline the two main observations that led Wegener to propose the theory of continental drift.
Answers
Answer:
for continental drift included the fit of the continents; the distribution of ancient fossils, rocks, and mountain ranges; and the locations of ancient climatic zone
Explanation:
Hydrogen is considered to be a (metal, non-
metal) of relatively (high, low) electronega-
tivity.
1. nonmetal; low
2. nonmetal; high
3. metal; low
4. metal; high
Answers
Answer:
the answer is 1. nonmetal; low
difference between molar mass and molecular mass?
Answers
Answer:
In chemistry the substance is usually measured using molecular mass and molar mass. They are very important concepts in chemistry. Expression of molar mass is grams per mole.
...
Molar mass:
Difference between Molar mass and Molecular mass
Measurement given to compounds, atoms or molecules Determined only in molecules
Explanation:
hope the answer was helpful
Examine the diagram of a cell. Which accurately labels the lysosome? W X Y Z
Answers
Answer: all of them
Explanation:
Answer:
The answers X i just took the test
Explanation:
How many neutrons does the isotope Nn have
Answers
Answer:
N have 8 13 neutrons.
Explanation:
Nitrogen-15 Nitrogen-20
8 13
Explain in words or using your diagrams how beryllium atoms would react with fluorine atoms.
Show clearly the outcome of the reaction and state the formula.
Answers
Explanation:
To delineate the the nature of the bonds that would be formed between the two elements, let us first write the electronic configuration of the two species;
Be = 2, 2
F = 2, 7
Beryllium is a metal with two valence electrons whereas fluorine is a halogen with seven valence electrons.
When Be loses two electrons it becomes isoelectronic with He;
Be → Be²⁺ + 2e⁻
Also, when fluorine gains an electron, it becomes isoelectronic with Ne;
F + e⁻ → F⁻
This loss and gain of electrons between the two elements creates an electrostatic attraction them and they enter into an electrovalent bond.
Hence;
Be²⁺ + 2F⁻ → BeF₂
If the earth's mantle were completely solid,__________ plates could not move around.
Answers
Answer:tectonic
Explanation:
Answer:
TECTONIC
Explanation:
what is the total number of electrons found in the valence shell of noble gas in the ground state?
Answers
Answer:
eight
Because the noble gases are the least reactive of all elements, their eight valence electrons are used as the standard for nonreactivity and to explain how other elements interact.
Explanation:
what does buffer do?? (Chemistry)
Answers
Answer:
C, It resists a change in pH when H+ or OH is added to a solution.
Explanation:
a p e x
Date
Page
1. An organic compound is found to contain the
following constituents :
C = 33.8%. H = 4.7%., N - 13:2%, Cl= 33.4%
and rest is Oxygen. Determine its empirical mass?
Answers
Emperical formula
C₃H₅NClO
Further explanationThe empirical formula is the smallest comparison of atoms of compound =mole ratio of the components
The principle of determining empirical formula
Determine the mass ratio of the constituent elements of the compound. Determine the mole ratio by by dividing the percentage by the atomic massmole ratio :
C[tex]\tt \dfrac{33.8}{12}=2.82[/tex]
H[tex]\tt \dfrac{4.7}{1}=4.7[/tex]
N[tex]\tt \dfrac{13.2}{12}=1.1[/tex]
Cl[tex]\tt \dfrac{33.4}{35.5}=0.94[/tex]
O[tex]\tt \dfrac{14.9}{16}=0.93[/tex]
we divide by the smallest mole ratio (0.93)
C : H : N : Cl : O =
[tex]\tt \dfrac{2.82}{0.93}\div \dfrac{4.7}{0.93}\div \dfrac{1.1}{0.93}\div \dfrac{0.94}{0.93}\div \dfrac{0.93}{0.93}\\\\3\div 5\div 1\div 1\div 1[/tex]
Emperical Formula :
[tex]\tt C_3H_5NClO[/tex]
another term sometimes used for the celsius scale
Answers
Answer:
Explanation:
Centigrade
Order the following wavelengths from longest to shortest
Answers
Radio waves
Microwaves
Infrared Rays
Visible Light
Ultra Violet
X-Rays
Gamma Rays
*Shortest*
Hope this helps
Which term represents a phase change?
Answers
Answer:
melting and solidification
Answer: MELTING
Explanation:
which reaction is faster?why?
Answers
Answer:no answer
Explanation:
Temperature. Usually reactions speed up with increasing temperature. Physical state of reactants. Powders react faster than blocks - greater surface area and since the reaction occurs at the surface we get a faster rate.
There are five objects (a pink object, a yellow object, a white object, a gray object, and a violet object). Each object has a different mass (28.7 g, 41.6 g, 8.7 g, 30.4 g, and 76.9 g) and a different volume (11.6 cubic cm, 57.4 cubic cm, 14.9 cubic cm, 29 cubic cm, and 57 cubic cm). The masses and volumes listed above are not in any particular order, they are listed randomly. Use the clues below to figure out the mass, volume, and density of each object. Construct a table to display your data. 1. The volume of the yellow object is not 29 cubic cm and it is also not 57.4 cubic cm. 2. The white object has a greater mass than the pink object. 3. The gray object has a density of 1.349 grams per cubic cm and a mass of 76.9 g. 4. The density of water is 1.0 gram per cubic cm. If the white object was placed in water, it would sink. 5. The density of water is 1.0 gram per cubic cm. If the yellow object was placed in water, it would float. 6. The density of aluminum is 2.7 grams per cubic cm. The violet object is more dense than aluminum. 7. One object has a volume of 57.4 cubic cm and a density of 0.5 grams per cubic cm. 8. The volume of the violet object is not 11.6 cubic
Answers
What evidence supports a scientist's conclusion that fossil B is older than fossil A? (4 points)
a
Fossil A and fossil B were both found at the same depth below Earth's surface.
b
Fossil B was found at a depth of 185 meters below Earth's surface, while fossil A was found at a depth of 50 meters below Earth's surface.
c
Fossil B was found at a depth of 50 meters below Earth's surface, while fossil A was found at a depth of 185 meters below Earth's surface.
d
Fossil A was found below Earth's surface, while fossil B was found at surface level.
Plz help need this fast!
Answers
Answer:
Choice B, as time goes on the surface level rises and stuff buried underground gets further and further below surface level.
6 . Label the illustration below.
A
D
С
У
X
B
A
B.
C
Answers
Answer:
Where is the illustration?
Explanation:
Abase may be defined as a
Answers
Answer:
A base is a salt which has a oh above 7
Explanation:
Which of the following is a chemical property?
A:
mass
B:
oxidizes in air
C:
boiling point
D:
solubility
Answers
Fill in the blanks. SPELLING COUNTS!!
Types of Forces
A
repel
is a force that causes an object to move away from the thing pushing it.
A
magnet
is a force that causes an object to move toward the thing pulling it.
Motion is caused by familiar
like a push, pull, friction, gravity, and magnetic attraction.
is a force which resists motion and can also create heat.
Magnetism is a force that can
(pull) and
(push).
Gravity
is a force that pulls objects toward the Earth’s center.
Please answer the blank question or answer all for brainliest
Answers
Answer:
cocooooooooooooooooooooooooooo
Explanation:
3n\hj 3ihhjcvyh 6]0u70-uh]h ]]huc7]]uh uhu-hu -u h-u7-u37-]u3- -7u7uh5h57h0u70y c0yuuh-u-]u]3u3 cuyuycuy0nuy0yc6udy8056uy08
If an object has a volume of 3 cm3 and has a density of 9 g/cm3. What is the mass of the object?
3 grams
6 grams
27 grams
81 grams
Answers
Answer:
The answer is 27 gramsExplanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volume
From the question we have
mass = 9 × 3
We have the final answer as
27 gHope this helps you
Why do atoms tend to be bonded to other atoms?
A. Atoms would lose their electrons if they didn't form bonds.
B. Atoms could not exist without a full octet of valence electrons.
C. Atoms are often more stable when bonded to other atoms.
D. Atoms form bonds to make the neutrons more stable.
Answers
Answer:
Atoms are often more stable when bonded to other atoms
Explanation:
Like for example let's say ionic bonds..... Since one atom has to lose specific electrons to be stable and the other needs the electrons from the other atom to be stable.....
Answer:
C. Atoms are often more stable when bonded to other atoms
Explanation:
bonding is the joining of two atoms of the same or different elements to form a molecule with the help of forces of attraction.when the atoms join they gain stable electronic configuration .
PLEASE HELP WILL GIVE BRAINLY IF UR CORRECT
Answers
Answer:
eon,era,period,epoch,and age
Explain how blocks of the periodic table are related to the electron configuration of an element.
Answers
Answer:
that is simple
electronic configuration s,p,d,f
we know that it's represented element
thus block also represented by s,p,d,f
same
Explanation:
that how it's are related are in the periodic table .
Answer:
Explanation:
The electronic configuration of an element is related to its position on the periodic table.
The links are:
the number of circles in the electronic configuration of an element is represented in the periodic table as the period number that element is situated in
the number of electrons in the outermost shell of an element is represented in the periodic table as the group number that element is situated in
the number of electrons in all shells of an element is represented in the periodic table as the element's atomic numbe
which has a greater atomic size carbon or boron
Answers
Answer: Boron
Explanation:
hope this helps
Answer: Boron.
Explanation: The trend of atomic radius increases as we go from right to left on a periodic table, so since Boron is further left, Boron has a slightly larger radius.
Which Anion would have 16 protons?
Answers
Answer:sulfur
An atom of sulfur contains 16 protons, because its atomic number is 16, and 16 electrons, in order to be net-neutral.
Explanation:
Buckets of paint can be classified as what type of mixture?
Answers
Answer:
Homogeneous
Explanation:
Homogeneous mixtures are uniform in composition. They have the same proportion of components throughout. Homogeneous mixtures are called solutions. Sugar, paint, alcohol, gold are all examples of homogeneous mixtures because they look the same throughout.
