Answer:
created or destroyed
Explanation:
The law of conservation of mass tells us that during a chemical reaction, matter is neither created or destroyed; it can change from one form to another but there will be no gain or loss of mass.
how many periods are there in the modern periodic table of elements?
Answer:
There are seven periods in the modern periodic table.
Answer:
Seven periods
Explanation:
There are seven periods in the periodic table, with each one beginning at the far left. A new period begins when a new principal energy level begins filling with electrons. Period 1 has only two elements (hydrogen and helium), while periods 2 and 3 have 8 elements.
Are viruses alive. What makes something alive?
Statement: No cell membrane or other organelles.
Statement: Most viruses do not have the fools to copy their own DNA
Statement: Outside of a host cell viruses do not use energy.
Statement: viruses don't appear to have active processes that respond to the environment
what
what is the substance that is formed when the acid react with bases in a neutralization reaction?
Answer:
Water and Salt
Explanation:
A neutralization reaction occurs when an acid and a base react to produce water and a salt, and it entails the formation of water from the mixture of H+ and OH- ions.
Answer:
NaCl and water is formed when acid reacts with base
Which component of the universe contains all of the other components listed below and would have the
greatest mass?
The galaxy is the component of the universe which contains all of the other components and would have the greatest mass.
What is a galaxy?A galaxy is a system of stars, stellar remnants, interstellar gas, dust, dark matter, bound together by gravity.The word is derived from the Greek galaxias , literally 'milky', a reference to the Milky Way galaxy that contains the Solar System. Galaxies, averaging an estimated 100 million stars, range in size from dwarfs with less than a hundred million stars, to the largest galaxies known – supergiants with one hundred trillion stars,each orbiting its galaxy's center of mass.
Most of the mass in a typical galaxy is in the form of dark matter, with only a few percent of that mass visible in the form of stars and nebulae. Supermassive black holes are a common feature at the centres of galaxies.
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Which of the following have London dispersion forces?
a. methane
b. carbon tetrachloride
c. bromine trifluoride
d. all of the above
SCIENCE ASSAP
Genetic Diversity
• The variation in genes that exists within a species
• Organisms with a large gene pool have a greater
chance of surviving and flourishing than a
population with limited genetic variability.
• Ex: resistance to disease, tolerance to cold
• Darwin termed this process "natural selection."
To the left you can see the variety of genes that exist
in types of fruit. Can you think of another species
that has similar variations?
Kesler Science, LLC
Answer:
Oranges
Explanation:
Oranges have a lot of genetic diversity within them, since oranges were already well versed in growing in winter months, oranges have gentically modified themselves through natural selection into be able to prouduce in warmer climates. Oranges also have changes in genetics which gives them a lot of gentic diversity that effects their, size, taste, texture, acidity and ability to reproduce.
A gas mixture contains oxygen, nitrogen, and carbon dioxide. It has a pressure of 250 mmHg. If the pressure of oxygen is 50 mmHg and the pressure of nitrogen is 175 mmHg then what is the pressure for carbon dioxide?
Answer:
[tex]P_{CO_2}=25mmHg[/tex]
Explanation:
Hello there!
In this case, according to the Dalton's law, which explains that the total pressure of a gaseous system equals the sum of the partial pressures of the gases composing, for the gaseous mixture composed by oxygen, nitrogen and carbon dioxide it would be possible to write:
[tex]P_{tot}=P_{N_2}+P_{O_2}+P_{CO_2}[/tex]
Now, given the pressure of the system and those of oxygen and nitrogen, we calculate that of carbon dioxide as shown below:
[tex]P_{CO_2}=P_{tot}-P_{N_2}-P_{O_2}\\\\P_{CO_2}=250mmHg-50mmHg-175mmHg\\\\P_{CO_2}=25mmHg[/tex]
Best regards!
List two of the kingdoms found in the Eukarya domain
Photo attached, can anyone help??? I need help with question 28
Answer:
so what it's saying is that chlorine has two atoms because diatomic means consisting of two atoms.
Explanation:
can I please have brainliest? :)
What factors are different in diagrams A and B?
Answer:
Acceleration Of B IS greater
Explanation:
F= mass x accelerarion
Acceleration of ( A) =20÷5 =4
Acceleration of (B) =5
Question 1
10 pts
In the reaction C3Hg + 502 — 3CO2 + 4H20, what is the ratio of moles of oxygen used to moles of H2O
produced?
O 5:3
04:5
0 3:5
O 5:4
Answer:
5:4
Explanation:
The equation given is balanced. There are 5 O2's on the left (reactant side) and then 4 H2O's on the right (product side). Thus, it's a 5:4 ratio.
balance the equation below SO2+O2>SO3
Explanation:
The balanced equation is 2SO2+O2→2SO3
Which of the following should
have the LOWEST dissolved
oxygen?
A. A lake with a waterfall
B. a swiftly-moving stream
C. a beach with heavy wave action
D. a small, calm pond
Answer:
warm water holds the least amount of dissolved oxygen, so I would assume the answer would be D. a small pond could heat up easily. in addition, the water is calm and not moving in a pond
How do we determine the number of electrons in a neutral atom?
this is the answer of your question .
Hope it helped you
The ______ of the particles themselves is much less than the space in between those particles
plz write question properly. Its not understandable.
#4 6th grade science
Answer:
Taxonomy
Explanation: Taxonomy formally names and classifies organisms by thier structure, function, and relationships
Calculate the Keq of the reaction CH4 + O2 ⇌ CO2 + 2H2O, given the following concentrations at equilibrium:
[CH4] = 0.37M [O2] = 0.25M [CO2] = 0.86M [H2O] = 0.44M
What will happen to a soccer ball that is rolling across a field if an unbalanced force of friction is acting on the soccer ball?
A. The soccer ball will gradually move slower and slower until it stops.
B. The soccer ball will continue to move at a constant speed.
C. The soccer ball will move at a constant speed for a while, then slow down and stop.
D. The soccer ball will slow down for a while and then move at a constant speed without stopping.
How many moles are 7.6 x 1024 atoms of Helium?
Answer:
3.88
Explanation:
Material
Mass
Tfinal
AT
Tinitial
min
(g)
O min
Water
200
Water
100
A solution's hydrogen ion concentration is 1 x 10-5M.
What is the pH?
Answer:
pH=5
Explanation:
-log(1 x 10-5)=5
Help please!!!!!!!!!!!!!!!!!!!!!!!!
How many joules are required to melt 100 grams of water? The heat of
fusion of water is 6.01 kJ / mole.
If greenhouse gases in the atmosphere act like a blanket around the Earth, how is this "blanket" being changed by human activities?
Answer:
c on edg
Explanation:
i dont know for sure so sorry if i am wrong.
and have a good day <3
CH4 + 2O2 → CO2 + 2H2O How many products are produced by this reaction?
A.4
B.2
C.3
D.1
Answer:
i think its 2 but I'm not sure
What causes a substance to be hydrophobic?
is Radon an elementary substance or a compound?
Answer:elementary substance
Explanation:
How many molecules are in 502.1 g of NaF?
Answer:
11.958129200057586 molecules
Explanation:
3. Explain why ionic compounds are "fixed" in their chemical composition.
Answer: Ionic compounds are "fixed" in their chemical composition as forces present between atoms of these compound are strong electrostatic forces of attraction due to which these compounds have fixed chemical composition.
Explanation:
Compounds formed by transfer of electrons from one atom to another are called ionic compounds.
For example, sodium atom on losing its one valence electron forms [tex]Na^{+}[/tex] ion and when a chlorine atom gains this electrons then it forms [tex]Cl^{-}[/tex] ion. These ions when come closer then an electrostatic force of attraction will pull them together forming NaCl compound.
Therefore, one atom of sodium is chemically combining to one atom of chlorine to form NaCl.
As the forces present between atoms of an ionic compound are strong electrostatic forces of attraction due to which these compounds have fixed chemical composition.
Thus, we can conclude that ionic compounds are "fixed" in their chemical composition as forces present between atoms of these compound are strong electrostatic forces of attraction due to which these compounds have fixed chemical composition.
Ionic compounds are formed when there is a donation of an electron from one element to another that receives the electron. This causes the donating atom to attain a positive charge and the receiving atom to attain a negative charge. The ions thus formed are held by strong electrostatic forces that hold them together.
Ionic bonds are formed through the transfer of electrons from one element to another which receives the electron.Positive and negative ionic charges are thus acquired by the respective elements. Strong electrostatic forces that act in all directions hold the ions together. This also gives them the fixed state that makes it more difficult to break them up when compared to the covalent bonds. So, the strong electrostatic forces cause the fixed state of ionic compounds.
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When an object is acted on by unbalanced forces, the object will -
Answer:
hope it helps and thank you for the points