Answer:
The oxidation number of metallic copper is zero. In its compounds, the most common oxidation number of Cu is +2. Less common is +1. Copper can also have oxidation numbers of +3 and +4
Explanation:
Giving brainliest please help with this question
Answer:
B! Hope this helps! :)
Explanation:
2. Which pair of elements would have the greatest difference in electronegativities? *
Answer:a
Explanation:
what is the mass of of 3.20 X 10^23 particles of Co2?
Answer:
Mass = 23.36 g
Explanation:
Given data:
Number of particles of CO₂ = 3.20 ×10²³
Mass of CO₂ = ?
Solution:
1 mole contain 6.022×`10²³ particles,
3.20 ×10²³ particles × 1 mol / 6.022×`10²³ particles
0.531 mol
Mass of CO₂:
Mass = number of moles × molar mass
Molar mass = 44 g/mol
Mass = 0.531 mol× 44 g/mol
Mass = 23.36 g
What shapes do s, p, d represent?
The Earth’s inner core is made mostly of ____.
A) magma
B) halite
C) iron
D) diamond
Answer:
iron and nickel
______________
In an unexpected temperature change,
what causes the temperature change?
Answer:
WEATHER!
Explanation:
Weather can cause an unexpected temperature change! :) Hope this helps!
What is the valency of argon?
Answer:
0 electrons in outermost shell as it is a noble gas
Answer:
the valency of argon is 0
since it has complete valence shells , so it doesn't react with any other element
Can someone figure this out for me thank you
Why can small perennial weeds and grasses not serve as pioneer species during primary succession?
Answer:
because
Explanation:
because
If a 10 kg stone falls from a height of
30 m, what is the velocity of the stone
as it hits the ground?
Answer:
26.32 because z easy
Explanation:
Answer:
26.32 because z easy
Explanation:fds
Answer:
26.32 becfdseefdause z easy
Explansefdsefdsefdsenfuystyegfsvfgvsfhs76ieu4fguyhgvrykes4rjehrfgehg4fuebecause z easy
Explanasetion:sf
26.32 because z easy ef
Explanation:
Answer:ds
26.32 because z easy
Explanation:
hbdshfiushyAnswer:
26.32 because z easy
Explanation:
Answer:
26.32 because z easy
Explanation:fds
Answer:
26.32 becfdseefdause z easy
Explansefdsefdsefdsenfuystyegfsvfgvsfhs76ieu4fguyhgvrykes4rjehrfgehg4fuebecause z easy
Explanasetion:sf
26.32 because z easy ef
Explanation:
Answer:ds
26.32 because z easy
Explanation:
hbdshfiushy
Define the problem: How do the structure and properties of foods change as
their components change?
Part 1 - Research Baking Substitutes
Prepare a pamphlet about baking with substitutions for people with allergies or health
concems. Research the role that a common ingredient found in baked good plays in
creating the expected texture and structure Choices could include eggs, baking
powder, oil, milk, or sugar Describe an ingredient that could be used as a substitute for
the ingredient you have chosen
Include answers to questions such as the following in your leaflet
1. SEP Obtain Information What type or types of molecules or compounds are in
the ingredient?
Answer:
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Which describes a similarity between abiotic and biotic Which describes a similarity between abiotic and biotic factors?
A.They may include things that were once living.
B.They are both necessary for organisms to survive.
C.They are not usually important parts of the environment.
D.They can be easily replaced if they are used or destroyed.factors?
option A is correct.biotic is a nother word for living
Answer:
option A would be the correct answer for the question below.
Explanation:
Which describes a similarity between abiotic and biotic factors?
The ability of iron to conduct electricity is a physical property of iron. *
True
False
Answer:
True
Explanation:
A physical property is a property that can be measured without changing the chemical composition of the substance.
The chemical composition of iron does not change when it conducts electricity so conductivity is a physical property.
Hope that helps.
Atoms of different element can not have same atomic number because only same type of atoms combine to form element. Atoms belonging to different element can have different atomic number. Therefore, the given statement is true.
What is element?Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same. Two or more than two atoms with different physical or chemical properties can not combine together to form an element.
A physical property is a property that can be measured without changing the chemical composition of the substance. So, ability of iron to conduct electricity is a physical property of iron
Therefore, the given statement is true.
To know more about element, here:
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In addition or subtraction, the result carries the same number of decimal places as the quantity carryi
the fewest decimal places.
Click Oil Basics to explore the natural resources needed for the production of plastics. Use the information to answer the question. Which of these ingredients is important in making plastics? carbon dioxide particulate matter natural gas plant liquids volatile organic compounds
Answer:
natural gas plant liquids
Explanation:
The ingredients that are important for the production of plastics are natural gas and plant liquids. The correct options are c and d.
What is plastic?Polymers are the primary component of a wide variety of synthetic or semisynthetic materials known as plastics. Due to their versatility and importance to civilization, plastics are a very important material. This is due to the fact that plastics can be bent and molded into a variety of objects, from plates to phones.
Radiation is to blame for this becoming possible. People who manufacture plastics can heat polymers sufficiently to allow them to bend by employing radiation. They can then be formed into a variety of things when this occurs.
Plastics are made from natural gases and liquids obtained from plants.
Therefore, the correct options are c, natural gas, and d, plant liquids.
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Which of the elements has the same Lewis dot structure as calcium (Ca)?
A.Barium (Ba)
B.Potassium (K)
C.Germanium (Ge)
D.Argon (Ar)
Answer:
[tex]\boxed {\boxed {\sf A. \ Barium (Ba)}}[/tex]
Explanation:
Lewis dot structures illustrate the valence electrons in an element.
Valence electrons are the outermost electrons in an atom that bond with other atoms by accepting or releasing electrons. The groups, or columns, of the Periodic Table have the same number of valence electrons.Calcium is in group 2.
The other elements in this group are:
Beryllium, Magnesium, Strontium, Barium, and RadiumSo, all these elements have the same lewis dot structures because they have the same number of valence electrons.
Based on the answer choices, choice A is correct.
Help!!!! What type of compound is N2O3? And what is its name?
Explanation:
Dinitrogen trioxide is a nitrogen oxide. Nitrogen trioxide appears as a blue liquid with a sharp, unpleasant chemical odor.
Description: Dinitrogen trioxide is a nitrogen oxide.ChEBINitrogen trioxide appears as ...
Synonyms: Dinitrogen trioxideNITROGEN TRIOXIDENitrogen oxide (N2O3)10544-7...
Molecular Formula: N2O3
Molecular Weight: 76.012 g/mol
How many moles of oxygen are required to produce 12 moles of water?
Answer:
6 moles of Oxygen required
Answer:
6
Explanation:
I hope this helps with your question :)
Which is true of scientific questions?
A. Few scientific questions lead to useful investigations.
B. Scientific questions are answered by doing experiments.
C. Many scientific questions are too complex to be tested.
D. Scientific questions are biased by the opinions of scientists.
ALL I ask is you answer correctly I'm having a bad day ! :(
Jimmy Fallon was playing with acids and bases and was trying to determine how many grams of Copper (I) Hydroxide he would need to create 48.76 grams of Copper (I) Phosphate when reacting it with Phosphoric Acid.
Answer:
i have no clue whats going on here but imma act like i do.....
Explanation:
BRAINLIEST !!! HELP PLZ
Answer:
Hcl Answer
Explanation:
may be this helpful!
How many moles are in 3.63 x 1023 atoms of Mn?
Answer:
0.603 molesExplanation:
To find the number of moles in a substance given it's number of entities we use the formula
[tex]n = \frac{N}{L} \\[/tex]
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
[tex]n = \frac{3.63 \times {10}^{23} }{ 6.02 \times {10}^{23} } = \frac{3.63}{6.02} \\ = 0.60299...[/tex]
We have the final answer as
0.603 molesHope this helps you
Please HELP!! Which best describes CO2?
1)This is an ionic compound; it is named carbon
dioxide.
2)This is a covalent compound; it is named
carbon oxide.
3)This is an ionic compound; it is named carbon
oxide.
4)This is a covalent compound; it is named
carbon dioxide.
What is oxydation number of s for H2S ? ( hydrogen sulphide )
Answer:
the oxidation number is zero because H=+1. S=-2
Explanation:
so two hydrogen and one sulphur so total no is zero
hi someone help me pls
Answer:
c
Explanation:
chemical change results from a chemical reaction where nothing is change example of chemical changes burning, cooking, rotting and rusting
Answer:
IM LOOKING FOR POINTSSSSS
Explanation:
PLS HELP
S
S
S
S
S
S
S
S
S
S
SS
SS
S
When an electron moves from a lower energy level to a higher energy level, the atom:
A. absorbs light
B. gives off light
C. becomes a new isotope
Answer:
A. absorbs light
Explanation:
For an electron to move from a lower energy level to a higher energy level, energy needs to be added to the atom.
In most cases this required energy will be light: The electron of the atom will absorb the energy of the light and move to a higher energy level.
When said electron comes back to the lower energy level, the atom will conversely give off light.
What are all the elements in a column called? NO LOOKING IT UP and if u do put it in ur words
Answer:
There have been seven horizontal rows of elements are called phases in the periodic table of elements. Groups, or families, are called vertical columns of elements. Metals, – anti, and metals are the most common ways of classifying the periodic table.
Explanation:
A solution is saturated in CO2 gas and KNO3 at room temperature. What happens when the solution is warmed to 75°C?
solid KNO, precipitates out of the solution
gaseous CO2 bubbles out of the solution
solid KNO, precipitates out and gaseous CO2 bubbles out
nothing happens; both CO2 and KNO3 remain in solution
Answer:
gaseous CO2 bubbles out of the solution
Explanation:
We already know that the dissolution of a gas in water is exothermic. Hence, when the temperature of a solution containing a gas is increased, the solubility of the gas decreases and the gas bubbles out of the solution.
Similarly, the dissolution of KNO3 in water is endothermic. This implies that the solubility of the solid increases with increasing temperature.
Thus the solid becomes more soluble at 75°.
When the solution is warmed to 75°C ; ( B ) gaseous CO₂ bubbles out of the solution
When a solution is saturated with CO₂ ( gas ) and KNO₃ ( s ) has its temperature increased above the room temperature to about 75°C the solubility of the gas CO₂ will decrease, because the solubility of gas in a solution decreases with an increase in temperature while the solubility of a solid increases with increase in temperature.
Since the solubility of the gas decreases the gas will escape as bubbles ( CO₂ bubbles ).
Hence we can conclude that When the solution is warmed to 75°C ; ( B ) gaseous CO₂ bubbles out of the solution.
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What element was most recently discovered?(2010 A.D.)
Tennessine (Ts)
Element #117
Discovered: April 5, 2010
13. Think about the noble gases.... *
Answer:
Its C - He
Explanation:
