Answer:
Subtract the number of electrons from the number of protons in an atom as a basic way of calculating the charge of the ion.
Explanation:
For example, if a sodium atom loses one electron, work out 11 - 10 = 1.
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.
"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?
Why do mammals require lungs? Provide 3 reasons.
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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whose main job is to break down sugar to release energy that a plant cell can use?
Answer:
The Mitochondria
Explanation:
Mitochondria are membrane-bound cell organelles that generate most of the energy required to power the cell's organic chemistry reactions. Energy created by the mitochondria is kept in a tiny molecule known as adenosine triphosphate (ATP).
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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How many elements, compounds and atoms are in CH3COOH
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]
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:
How many atoms of carbon (C) are in C6H1206?
Please give 1 answer.
A.
12
B.
3
C.
24
D.
6
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.
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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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 mass of 2409793.03 particles of N2?
what kind of chemical bond is established in hydrochloric acid?
Answer and Explanation:
HCl, also known as hydrochloric acid, has a covalent bond. The hydrogen (H) atom shares an electron with the chlorine (Cl) to form the bond.
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:
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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At about what temperature does the sample change phase? Justify your
answer based on the cooling curve shown above.
A student states, “When the alcohol sample was at a temperature of 500 K, all the particles were moving faster than any of the particles were moving at
400 K" Do you agree or disagree with this student's statement? Justify your
answer.
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
WILL GIVE BRAINIEST is C6H1005 + O2 → CO2 + H2O balanced?
Answer:
No! The balanced equation is given below:
C₆H₁₀O₅ + 6O₂ —> 6CO₂ + 5H₂O
Explanation:
C₆H₁₀O₅ + O₂ —> CO₂ + H₂O
The equation above is not balanced. It can be balance as illustrated below:
C₆H₁₀O₅ + O₂ —> CO₂ + H₂O
There are 6 atoms of C on the left side and 1 at the right side. It can be balance by 6 in front of CO₂ as illustrated below:
C₆H₁₀O₅ + O₂ —> 6CO₂ + H₂O
There are 10 atoms of H on the left side and 2 atoms on right side. It can be balance by 5 in front of H₂O as illustrated below:
C₆H₁₀O₅ + O₂ —> 6CO₂ + 5H₂O
There are a total of 7 atoms of O on the left side and a total of 17 atoms on the right side. It can be balance by 6 in front of O₂ as illustrated below:
C₆H₁₀O₅ + 6O₂ —> 6CO₂ + 5H₂O
Now, the equation is balanced.
Answer these three please! Thank you <3333
(I will give brainliest)
Answer:
Explanation:
21:B 22:B
Earth’s magnetic field is generated by a conducting fluid in its core. Explain why this is a theory.
Answer:
It's not a theory, The magnetic pull is from the core of the earth and pulls you down. example: I can jump and fall, Why? because of the core of the earth of me going p and then down. Why do you think that space doesn't have gravity? It's because it doesn't have a core, There are no planets that pull you down enough like earth.
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:
can you help me on this i neeed help
Answer:
cell,brain,tissue
Explanation:
WILL GIVE BRAINLIEST
Answer: pretty sure it B
Explanation:
Answer:
the answer is b hope this helps
Explanation:
ffffxxxjehejr
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
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
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
8. __H2 + __O2-> __H2O
9. __K2SO4 + __H2-> __H2SO4 + __K
10. __NO2 + __H2O-> __HNO3 + __NO
Anser:
Explanation:
hope this helps