Answer:
C
Explanation:
All of the other options fall under either history or subjective opinion, and C is the only one which refers the actual properties of the planet itself.
balance the following chemical equations
Answer:
2N2 + O2 ⇒ 2N2O
Explanation:
Since I cannot see the product's of the second chemical equation I will only solve the first one.
In order to balance a chemical equation you need to make sure that the atoms on both sides are equal.
In this case we have...
N2 + O2 = N2O
N = 2
O = 2
N = 2
O = 2
Change the coefficient:
N2O = 2N20
2 × 2 = 4
1 × 2 = 2
2N2 + O2 ⇒ 2N2O
Hope this helps.
ILL GIVE YOU BRAINLIEST AND A 100 POINTS PLEASE HELP ... Dont answer if you dont know
Observe the substances in the test tubes for 15 minutes. In the table, describe what’s happening in each test tube, including any evidence of a chemical reaction.
Remember that evidence of chemical reactions can include change in color, change in smell, change in temperature, formation of a solid, or formation of bubbles. If there’s no observable change in a test tube, write “no reaction.”
pretty sure no reaction if it is wrong id like to give you back your points i can make up a question for u
how do you solve this ?
Answer: go to demos.scientific.com and type each answer if it marches with the question it is the correct answer
Explanation:
H2(g) + I2(g) → 2HI(g)
A student makes the following statements:
Hydrogen always has the same oxidation number, so it has an oxidation number of +1 in both the reactant H2 and product HI.
Iodine is in Group VIIA, so it has an oxidation number of –1 in both the reactant I2 and product HI.
Neither hydrogen nor iodine changes oxidation states, so the reaction is not a redox reaction.
In three to five sentences, describe the mistake that the student made, and determine whether or not the reaction is a redox reaction. Explain your answer.
This problem is providing statements whereby an student is pretending to explain a wrongly-classified non-redox reaction via the change in the oxidation numbers the elements undergo as it takes place. It is asked to report where the student went wrong and to determine whether the reaction is redox or not.
In such a way, we can start by saying that the student was right about the +1 on H and -1 on I but just on HI, not on the diatomic gases too, because when the elements act alone in a chemical equation, their oxidation states must be 0 as they are not forming any ions.
Next, we can go over the identification of the reaction as redox, by writing the correct oxidation numbers in the considered chemical equation:
[tex]I_2^0(g)+H_2^0(g)\rightleftharpoons 2H^+I^-(g)[/tex]
Which exhibits an oxidation half-reaction for hydrogen because it changed from 0 to +1 and a reduction half-reaction for iodine because it changed from 0 to -1, and thus, when the oxidation numbers change, we say the reaction is redox.
Learn more:
(Balancing redox) https://brainly.com/question/8344408List three things you wonder about bath bombs
Almost all bath bombs contain sodium bicarbonate and citric acid. These two ingredients combine to create that fizzing sensation bath bombs are famous for. More than that, though, they clean, deodorize, and repair skin, and strengthen blood vessels. These two main ingredients leave you with healthier, younger looking ...
Where can electrons be found?
HELP ME PLEASE!
What information in a balanced chemical equation shows how many moles of a reactant are involved in the reaction?
A. The superscripts in a formula tell the number of moles of the molecule.
B. The oxidation states of atoms in a molecule tell the number of moles.
C. The coefficient in front of the molecule tells its relative number of moles.
D. The subscript in a formula tells the number of moles of that molecule.
The information in a balanced chemical equation shows how many moles of a reactant are involved in the reaction is,
The coefficient in front of the molecule tells its relative number of moles.So, option C is correct one.
What is chemical equation?The symbolic representation of chemical reaction is called chemical equation.There are three parts of in chemical equation,first reactant from where reaction is started, second product the final result and arrows between reactant and product which shows conversion.The reactant part given in left hand side and product part is given in right hand side in chemical equation.What is balanced chemical equation?The chemical equation in which number of each type of atom is equal in both side of the arrow is called balanced chemical equation.
To learn more about chemical equation here.
https://brainly.com/question/12047033
#SPJ2
A decomposition chemical reaction can be compared to
Select one:
a.
eight couples doing a square dance.
b.
a dancing couple breaking up.
c.
two dancing couples switching partners.
d.
two single people joining for dance.
Answer:
I think is letter D
Explanation:
sana makatulong
Answer:
b. a dancing couple breaking up
Explanation:
Decomposition Reaction :
It is a type of reaction in which one reactant breaks out i.e decomposes into two or more products
eg : [tex]H_{2}CO_{3} - >[/tex][tex]CO_{2} + H_{2}O[/tex]
Therefore,
Just like a reactant splits or breaks into two or more products in a decomposition reaction the dancing couple in option b are also breaking up whereas no such split or breakup is mentioned in other options.
Learn more about Decomposition Reaction here:
https://brainly.com/question/27300160
#SPJ2
Calculate the molar concentration of the acid if "50.6 mL" of hydrochloric acid was required to neutralize 45.0 mL of 0.345 M "calcium hydroxide".
The molar concentration of the acid, HCl required for the reaction is 0.614 M
We'll begin by writing the balanced equation for the reaction. This is given below:
2HCl + Ca(OH)₂ —> CaCl₂ + 2H₂O
The mole ratio of the acid, HCl (nA) = 2
The mole ratio of the base, Ca(OH)₂ (nB) = 1
From the question given above, the following data were obtained:Volume of acid, HCl (Va) = 50.6 mL
Volume of base, Ca(OH)₂ (Vb) = 45 mL
Molarity of base, Ca(OH)₂ (Mb) = 0.345 M
Molarity of acid, HCl (Ma) =?MaVa / MbVb = nA/nB
(Ma × 50.6) / (0.345 × 45) = 2
(Ma × 50.6) / 15.525 = 2
Cross multiply
Ma × 50.6 = 15.525 × 2
Ma × 50.6 = 31.05
Divide both side by 50.6
Ma = 31.05 / 50.6
Ma = 0.614 MTherefore, the molar concentration of the acid, HCl is 0.614 M
Learn more: https://brainly.com/question/18997524
The molar concentration of the acid is 0.614 mol/L
The balanced chemical reaction for the reaction is
Ca(OH)₂ + 2HCl → CaCl₂ + H₂O
Using CV/C'V' = n/n' where C = molar concentration of hydrochloric acid, V = volume of hydrochloric acid = 50.6 mL = 0.0506 L, n = number of moles of hydrochloric acid = 2, C' = molar concentration of calcium hydroxide = 0.345 M = 0.345 mol/L, V' = volume of calcium hydroxide = 45.0 mL = 0.045 L, n' = number of moles of calcium hydroxide = 1.
Making C subject of the formula, we have
C = nC'V'/n'V
Substituting the values of the variables into the equation, we have
C = nC'V'/n'V
C = 2 × 0.345 mol/L × 0.045 L/(1 × 0.0506 L)
C = 2 × 0.345 mol/L × 0.045 L/0.0506 L
C = 0.03105 mol/0.0506 L
C = 0.614 mol/L
So, the molar concentration of the acid is 0.614 mol/L
Learn more about titration here:
https://brainly.com/question/17779099
17. kilometer
Meaning
Kilometer is a unit which is used for measuring the length or distance between 2 things / places. It's abbreviated as 'km'.
For example, the distance from California to Hawaii using the shortest route (air travel) is about 3,976 km.
________
RainbowSalt2222 ☔
5. When moving down a group on the periodic table,
which two atomic properties follow the same trend?
A. atomic radius and ionization energy
B. ionic radius and atomic radius
C. ionization energy and ionic radius
D. ionic radius and electronegativity
In the modern periodic table, the properties of elements are a
periodic function of their atomic numbers.
TRUE
FALSE
Answer:
true
Explanation:
Which action occurs at an electrode of a galvanic cell?(1 point) plz helpp
anion flow
anion transfer
electron flow
electron transfer
Electron flow is the action which occurs at the electrodes of galvanic cells.
A galvanic cell comprises of the electrolyte and electrodes. There are two
types of electrodes called the cathode and anode.
The cathode is the positive electrode found in electrochemical cells and
electrons flow from it to the anode. Negatively charged ions flow to the
cathode and reduction takes place in it.
The electrons from the cathode are then passed to the anode (negative
electrode) which gets oxidized and we can infer that oxidation takes place in
the anode. The flow of electrons helps to generate electricity.
Read more on https://brainly.com/question/25606478
Why cant you just add up the average masses, divide by three and get an atomuc mass?
Answer:
Differences are particle, nor does it measure their total mass as you did. particles and their relative abundances. It does not count each individual A mass spectrometer yields only information about the masses of atomic They are equal.
Explanation:
HOPE IT HELPS
Various methods of aquaculture can be used to grow species of marine fish. Consider the figure below, which shows one way that an aquaculture system can be
designed to allow water to flow freely through the net. Explain whether this represents an open or closed system and one benefit of using this type of system.
2015. SeaChoice org
Answer:
This is an open system, and one benefit is that it does not require as much filtration and maintenance.
Explanation:
the products of the acid catalyzed hydrolysis of a fat are
The acid catalysed hydrolysis of fats yields fatty acids and glycerol which are the constituents of the fatty acid.
Fats are composed of triglycerides. Trigycerides are formed from fatty acids and propane - 1,2,3 - triol. Triglycerides are essential components of the human body.
Hydrolysis involves the breaking up of a substance into its constituents owing to the addition of water, acid or base. The acid catalysed hydrolysis of fats yields fatty acids and glycerol which are the constituents of the fatty acid.
Learn more: https://brainly.com/question/6284546
I DON'T UNDERSTAND! PLEASE HELP.
Answer:
A would be the lowest, then C, and B would be the highest.
Explanation:
Elements tend to become more reactive as you move down the periodic table. This happens because the atoms become progressively larger and lose their hold on the outer eletrons more easily.
what is the source of energy that provides the boost for electrons during photosynthesis
Answer:
The sun
Explanation:
The sun is the source of energy that provides the boost for electrons during photosynthesis
How did the Coronaviridae family get its name?
In what type of hybrid car do both the gasoline and electric motors run the car?
series
parallel
Explanation:
Series Hybrid:
Under this type of hybrid car, the Series Hybrid also employs both the petrol internal combustion engine as well as the electric motor. However, the internal combustion engine does not propel the car, instead it generates electricity to recharge the battery pack.
Answer:
Parallel
Explanation:
If you were to compare the function of a cell to the function of a city , which of the following organelles would be the city’s power plant
Answer:
Mitochondria
Explanation:
The mitochondria is the powerhouse of the cell
How many total atoms of Oxygen (O) are represented below?
1 Na3C2(01H1)1
Answer:
1
the coefficient for the whole thing is 1
the subscript of O is 1
the subscript of (O1H1) is 1
Which organelle acts like a screen door, separating its contents from the outside world?
capsule
mitochondria
plasma membrane
endoplasmic reticulum
Answer:
Plasma Membrane
Explanation:
Its the outer wall of a cell
Answer:
The answer is plasma membrane took the k12 test
Explanation:
Explain what a valence electron is. Using the atomic structure above (#4) give the number of valence electrons.
Answer:
valence electrons are the electrons in the outermost shell and there are 6 valence electrons in sulfur
WILL GET BRAINLIEST!!!! Please Help
describe the sharing of electrons in polar covalent bonds and nonpolar covalent bonds
identify five negative effects of acid precipitation
What is the oxidation state of a lone element?
A. It is the same as in a compound.
B. It is always 1.
C. It is its most likely oxidation state.
D. It is always 0.
*** its D ***
Answer:
i think the answer is b or c
b) What type of bond is formed between the atoms of this type of compound?
Answer: Covalent bond involves a pair of electrons being shared between atoms.
Explanation:
Many communities rely on solar energy for daily life uses.
Suppose the Moon was twice its size and cast a bigger shadow on Earth
during a solar eclipse, causing the light from the Sun to be blocked for
days. How would this affect the communities who rely on solar energy?
Answer:
This would affect the communities that use solar energy greatly, in a negative way.
Explanation:
If the moon were twice its size, and cast a larger shadow on Earth, the shadow would black out the earth to an almost night time, during the day. We would have a 24+ hour night, and communities relying on nothing but solar energy would be out of power until the sun was out again.
ASAP HELP FOR BRAINLIST
The mass of a bowling ball is 3629 g and volume is 5280 ml. Find the density of the bowling ball and determine if it will sink or float in water?
Question 16 options:
Density of the bowling ball is 1.7 x 107, so it will sink in water as its density is greater than the density of water.
Density of the bowling ball is 1.7 x 107, so it will float in water as its density is lower than the density of water.
Density of the bowling ball is 0.688 g/ml, so it will float in water as its density is lower than the density of water.
Density of the bowling ball is 0.688 g/ml, so it will sink in water as its density is greater than the density of water.
Answer:
Option 3
Hope this helps!
