Answer:
A)
Explanation:
Entre todos esas materias el hidrógeno es el más fuerte
How many elements, compounds and atoms are in CH3COOH
define the clinical thermometer
Answer:
a small medical thermometer with a short but finely calibrated range, for taking a person's temperature.
Answer:
Thermometer which are used in clinical to measure the temperature of human body is called clinical thermometer.
The creation of carbon monoxide is an effect. What is one cause?
A. the regrouping of the atoms in table salt
B.the burning of fossil fuels
C.cleaning swimming pools
D.operating a stove
Answer:
Your answer is going to be B. the burning of fossil fuels
Explanation:
This is because carbon monoxide is extremely toxic for us humans. An example of this could be pollution. Hope this helps! :)
can someone please help me solve this? i dont understand this problem :(
Answer:
–4020 KJ
Explanation:
The following data were obtained from the question:
H₂(g) + F₂(g) —> 2HF(g) ΔH = –536 KJ
Next, we shall determine the mass of H₂ that reacted from the balanced equation to produce –536 KJ of heat energy. This can be obtained as follow:
Molar mass of H₂ = 2 × 1 = 2 g/mol
Mass of H₂ from the balanced equation = 1 × 2 = 2 g.
Summary:
From the balanced equation above,
2 g of H₂ reacted to produce –536 KJ of heat energy.
Finally, we shall determine the heat change produced by the reaction of 15 g of H₂. This can be obtained as follow:
From the balanced equation above,
2 g of H₂ reacted to produce –536 KJ of heat energy.
Therefore, 15 g of H₂ will react to produce = (15 × –536)/2 = –4020 KJ of heat energy.
Thus, the heat change for the reaction is –4020 KJ
What three types of particles make up an atom? What are their charges?
Answer:
Protons, neutrons, and electrons are the three main subatomic particles found in an atom. Protons have a positive (+) charge. An easy way to remember this is to remember that both proton and positive start with the letter "P." Neutrons have no electrical charge.
Answer:
Protons, positive charge
Neutrons, neutral
Electrons, negative charge
Explanation:
Explain how to identify a starting position on a line.
Displacement is defined as the distance, in any direction, of an object relative to the position of another object. Physicists use the concept of a position vector as a graphical tool to visualize displacements. A position vector expresses the positionof an object from the origin of a coordinate system
Answer:
Pick a reference point on the line to be the zero position. Determine the direction and measure the distance from zero in standard units.
Explanation:
I Wanted to ask.. it's a weird question I know or maybe it's gonna get reported But
Why is my friend so irritating..
Answer:
if hyper its probaly because the have ADHD which is a type of drug that helps people with behavior disorders . the might have ticks wich is something that people can not control.
Explanation:
How is elevation shown on a topographic map?
O intermediate contours
O index contours
O contour intervals
Ocontour lines
Answer:
D. Contour lines.
Explanation:
The primary difference is that they show elevation in detail. Characteristics of topographic maps include: they show elevation using contour lines. Put simply, a contour line is a line which joins points of equal elevation above sea level.
Write the ionic equation, including state symbols, for the reaction between zinc and iron(II) sulfate
Answer:
Fe (s) + Cu^2+ (aq) + SO4^2- (aq) --> Cu (s) + Fe^2+ (aq) + SO4^2- (aq)
Explanation:
What is the ability for a substance to flow
The ability for a substance to flow is fluidity.
Which substances show flowing?Only liquid and gaseous substances have the ability to flow from one point to other as they have weak intermolecular force in it.
Fluidity is the quantity which gives idea about the ability of that substance to flow. At normal conditions at room temperature, any substance has the tendency to distort its shape in order to flow or take the shape of the container it is enclosed in.
Hence the ability for a substance to flow is fluidity.
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How many
How long does it take to go
from a new moon to a third
quarter?
Answer:
about three weeks
Explanation:
because after a full moon, which is about 21 days, it comes to a third quarter moon
what is cell explain in a paragraph
Answer:
Cells are the basic building blocks of living things. The human body is composed of trillions of cells, all with their own specialised function. Cells are the basic structures of all living organisms. Cells provide structure for the body, take in nutrients from food and carry out important functions.
5. Describe the effects of photons of light on an electron of the hydrogen atom
Answer:
How do atoms give off light?
Atoms emit light when they are heated or excited at high energy levels. The color of light that is emitted by an atom depends on how much energy the electron releases as it moves down different energy levels. ... It shows the electron moving down energy levels.
Explanation:
How many hydrogen atoms Is needed for C4H8 to become saturated
Answer:
2 atoms
Explanation:
Because it contain one double bond
Which feature does an iron metal have?
O electrons that transfer between atoms to make cations and anions
O a sea of electrons
O firmly bonded electrons
O electrons shared between single pairs of atoms
Answer:
a sea of electrons
Iron metal has a sea of electrons.
Iron metal is an element which possesses a sea of electrons as a result of it
containing cations which are usually surrounded by electrons which move at
a very fast pace .
This property makes Iron metal to be reactive when exposed to air( oxygen)
and it then forms various compounds such as Iron(II) oxide, Iron(III) oxide and
rust.
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under which conditions would the solubility of a gas be greatest
Answer:
when there is high pressure and low temperature then the solubility of a gas will be greatest.
Answer:
B
Explanation:
edg 2021
What is meant by the dual wave-particle nature of light?
Dual wave particle nature of light can be regarded as mechanism that says light and matter will also has the properties of waves as well as that of particles.
This concept is found in mechanics as it describes how light and matter also has the properties associated with waves as well as particles.The duality explained inadequacy of conventional concepts of both wave and particle so as to give explanation about behaviour of quantum objects.the dual nature of light made us to understand that light has wave properties and it also has particle properties.Some of the properties of wave that light has are:
wavelengthspeedTherefore, duality means have both characteristics of light and wave
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WILL GIVE BRAINLIEST
Answer: pretty sure it B
Explanation:
Answer:
the answer is b hope this helps
Explanation:
ffffxxxjehejr
One of the steps to sweeten sour gas using the Claus process is reacting
hydrogen sulfide gas with sulfur dioxide gas to produce water vapour and sulfur.
16 H2S(g) + 8 SO2(g) → 16 H2O(g) + 3 Sg(s)
8.56 kL of hydrogen sulfide at 175 kPa and 250 °C reacts with excess sulfur
dioxide. Calculate the mass, in kg, of sulfur produced.
The mass, in kg, of Sulfur produced : 2.072 kg
Further explanationGiven
V = 8.56 kL = 8560 L
P = 175 kPa = 1,73 atm
T = 250 + 273 = 523 K
Required
mass of Sulfur produced
Solution
mol of H₂S :
[tex]\tt n=\dfrac{PV}{RT}\\\\n=\dfrac{1.73\times 8560}{0.082\times 523}\\\\n=345.3[/tex]
mol of Sulfur based on mol H₂S as a limiting reactant( excess Sulfur dioxide)
From equation, mol ratio H₂S : S = 16 : 3, so mol S :
[tex]\tt \dfrac{3}{16}\times 345.3=64.74[/tex]
Mass S(Ar = 32 g/mol) :
= mol x Ar s
= 64.74 x 32
= 2071.68 g = 2.072 kg
Write one paragraph to summarize Strengths and Weaknesses of Acids and Bases.
Answer:
Explanation: I can't give you the answer you with the sentence but i will help you the best i can
One qualitative measure of the strength of an acid or a base solution is the pH scale A logarithmic scale that relates the concentration of the hydrogen ion in solution.
PLZ HELP!
Why do we use ramps (inclined planes) to help us move objects?
Plz nothing from the internet :D
Answer quickly plz. CO2 dissolving in bodies of water forms_____
which causes the pH to____? Fill in the blanks.
A. Carbonate Acid; decrease
B. Carbonic Acid; increase
C. Carbonic Acid; decrease
D.Carbonate Acid; increase.
CO2 dissolving in bodies of water forms carbonic acid which causes the pH to decrease.
Hope this helps! Please correct me if im wrong! :)
Answer:C. Carbonic Acid; decrease
Explanation:
Carbonic acid is formed and acid decrease pH
"Religion and culture are also affected by the climate and topographic diversity."
Justify this statement
Answer:
In a survey of a group of people, it was found that 60 0f them have
business, 45 have government jobs, 125 have farming, 27 have business
only, 15 have government job only, 10 have business and government
job only, 5 have government job and farming only.
i) How many people have all the profession?
ii) How many people were there in a survey?
Select the correct answer from each drop-down menu.
Researchers stationed at different areas on a mountain and in a tunnel midway through the mountain boiled water at the same time. Even though the water at every station was at the same temperature, the pot at the top of the mountain started boiling before the others. Why?
Water boils when the vapor pressure is
the atmospheric pressure. The atmospheric pressure
at the top of the mountain.
Water boils when the vapour pressure is least the atmospheric pressure.
The atmospheric pressure is equal at the top of the mountain.
What is atmospheric pressure?The air around you has weight, and it presses against everything it touches. That pressure is called atmospheric pressure, or air pressure. It is the force exerted on a surface by the air above it as gravity pulls it to Earth.
As we go up in altitude the air pressure becomes less. When the pressure decreases, it takes less energy to get the water molecules to escape the surface. So the temperature is less than it would be at sea level.
Air pressure is higher or greater at the bottom of a mountain. This is because the height of the air above that level is thicker than at the top.
Pressure is given by the equation, P=rho*g*h, where rho is the air density, g is the gravity value and h is the thickness of the air layer on top of the level where we are considering the pressure.
Therefore, as we can see, at the bottom of the mountain, the thickness h of air is greater, and so is the pressure.
Hence, water boils when the vapour pressure is least the atmospheric pressure and the atmospheric pressure is equal at the top of the mountain.
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Answer these three please! Thank you <3333
(I will give brainliest)
Answer:
Explanation:
21:B 22:B
As the first five elements in Group 14 are considered in order from top to bottom, there are changes in both the
A
electronegativity values and number of first shell electrons
B
electronegativity values and atomic radii
C
number of valence shell electrons and number of first shell electrons
D
number of valence shell electrons and atomic radii
Answer:
A
Explanation:
beacause in both the electronegativity values and number of first she'll electrons
In group 14 from top to bottom there are changes in both the electronegativity values and atomic radii changes.
What are groups?Groups in the periodic table are the columns in which elements are present which all are having same number of valence electrons.
On moving top to bottom in the 14th group of the periodic table:
Atomic size of the elements increases and electronegativity decreases.Number of electrons in the first shell of all elements will be same and in the outer most shell is also same.Hence electronegativity values and atomic radii changes.
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instructions for #4-5, balance each equation after substituting symbols and formulas for words, remembering to include abbreviations for the physical state.
For subscripts, just make sure the number is in the right location in the compound formula.
4. Iodine crystals react with chlorine gas to form solid iodine trichloride.
5. Solid sodium bicarbonate reacts with hydrochloric acid [HCl (aq)] to produce aqueous sodium chloride, water, and carbon dioxide gas.
Answer:
Ok:
Explanation:
4.
[tex]I_2_{(s)} + 3Cl_2_{(g)} => 2ICl_3{(s)}[/tex]
5.
[tex]NaHCO_3_{(s)} + HCl_{(aq)} => NaCl_{(aq)} + H_2O_{(l)} + CO_2_{(g)[/tex]
If it takes 5 hours to produce 8.0 kg of alcohol, how any days will it take to consume 1000 kg of glucose?
It takes 21.3 days
Further explanationGiven
5 hr = 8 kg Alcohol
Required
Days to consume 1000 kg of glucose
Solution
Alcoholic fermentation⇒ glucose produces ethanol and carbon dioxide,
C₆H₁₂O₆ → 2 C₂H₅OH + 2CO₂
mol ethanol :
[tex]\tt \dfrac{5000~g}{46~g/mol}=108.7~moles[/tex]
moles of glucose to produce 108.7 moles ethanol :
[tex]\tt \dfrac{1}{2}\times 108.7=54.35[/tex]
54.35 moles = 5 hours
moles of 1000 kg of glucose :
[tex]\tt \dfrac{10^6~g}{180~g/mol}=5555.5~moles[/tex]
So for 5555.5 moles, it takes :
[tex]\tt \dfrac{5555.5}{54.35}\times 5~hours=511.085~h=21.3~days[/tex]
Which statement about anabolism is true?
A. In anabolism, energy is released.
B. In anabolism, energy is absorbed.
C. In anabolism, energy is absorbed and then released.
O
D. In anabolism, energy is released and then absorbed.
Answer:
i would say B? Im sorry if im wrong
Explanation:
i think that because Catabolic reactions release energy, while anabolic reactions use up energy. Anabolism is the opposite of catabolism.
Answer:
B) In anabolism, energy is absorbed.
I don't really understand this worksheet question.
