Answer:
O-18 is used as a tracer in many hydrologic studies. It is most often used as a component in a mixing-model and hydrograph separation, as O-18 acts conservatively and is applied naturally and uniformly over broad areas. O-18 can be used when different sources (old water/new water) have different isotopic values.
The force of gravity
1 point
a. is not related to the mass of the objects.
b. is only related to the mass of large objects.
c. is related to weight of the objects.
d. is related to the mass of the objects.
Explanation:
D No cap tell me if dis helped <3
Help please!!!!!!!!!!!!
Answer:
D
Explanation:
Gases have low densities. Density is the mass of an object divided by its volume. Mass of gases are quite small. Since the mass is related to mass of the particles itself. However the volume is great since the gases are far apart due to how weak the forces of attraction are ( gases take the shape of the container which means they take up a good bit of space which means greater volume). A small mass divided by a large volume gives a small value (small density).
Identify the limiting reactant when 24.5 g of H2 is made to react with 152.5 g of CO using the formula CO (g) +2H2 (g) --> CH3OH
Explanation:
1 mole of Carbon monoxide reacts with 2 moles of. Hydrogen gas ... use the mole ratio to determine the number of ... the coefficients of the balanced equation. 35.0 g Al mol Al. 26.98 g. Al.
What does MVLMEN stand for
He principal quantum number, n, represents the: a sub level of an electron b main energy level of a proton c main energy level of an electron d sub level of a proton
Answer:
c. main energy level of an electron
Explanation:
An atom can be defined as the smallest unit comprising of matter that forms all chemical elements. Thus, atoms are considered to be the building blocks of matter and as such defines or determines the structure of a chemical element.
Generally, atoms are typically made up of three distinct particles and these includes; protons, neutrons and electrons.
In Chemistry, electrons can be defined as subatomic particles that are negatively charged and as such has a magnitude of -1.
The principal quantum number, denoted by n, represents the main or overall energy level of an electron.
Basically, this property of an electron determines its energy level, as well as its distance from the nucleus of an atom of any chemical element. Also, as the distance of each orbital from the nucleus increases, the energy level increases respectively. Thus, sets of orbitals having the same principal quantum number (n) are generally referred to as an electron shell.
Why do atoms become anion and cations (remember the octet rule and how 8 is a very important number)?
Answer:
The atoms become cations because they have lost electrons and the atoms and has a positive charge then atoms become a ions because they have gained electrons from cations and has a negative charge
which statment explains the relationship between Earth's mantle and the outer core
A. the outer core is more dense and farther from the surface than the mantle
B. the outer core is more dense and closer to the surface the mantle
C. the outer core is less dense and closer to the surface than the mantle
D. the outer core is less dense and farther from the surface the. the mantle
Answer: A. the outer core is more dense and farther from the surface than the mantle
Explanation: There are two mantle‘s. But both of them are closer to the surface than the outer core. the outer core is the liquid layer outside of the inner core. The mantle is the next layer after the outer core. It goes: inner core, outer core, stiffer mantle, asthenosphere, ridged mantle, then the earth’s crust.
HS0, + NaOH
Na2SO, + 2H,0 is what type of reaction?
Double replacellent
Synthesis
Decomposition
Single replacement
Answer: Synthesis
Explanation: I think is suynthesis
write the conclusion of coin and feather experiment.
Answer: In a vacuum, the objects fall at the same rate independent of their respective masses. That means coin and feather both reach ground at same time in a vacuum. Larger objects experience more air resistance than smaller objects. Also, the faster an object falls, the more air resistance it encounters.
Explanation:
what is the ozone hole and how does it affect humans?
the equation 2Na + Cl2 ---> 2NaCl, 2 NaCl is a:
[tex] \huge\mathrm {Answer࿐}[/tex]
[tex] \mathrm{2Na + Cl_2 \rightarrow2NaCl}[/tex]
In the above equation, the product formed is :
[tex] \large\boxed{ \mathrm{NaCl}}[/tex]
_____________________________
[tex]\mathrm{ \#TeeNForeveR}[/tex]
How many oxygen atoms were used to write Felicia’s name?
Answer:
Explanation:
https://opentextbc.ca/introductorychemistry/chapter/molecules-and-chemical-nomenclature-2/
Define solubilty.
_________✰✰
Answer:
the ability for a given substance, the solute to dissolve in a solvent is solubility.
Answer:
the ability for a given substance, the solute to dissolve in a solvent is solubility.
how do you scale a recipe by changing the portion size
Answer:
You must change the size of each ingredient by the size of the product. Let's say my recipe calls for 1 bag of flower and 2 eggs. I want to double the amount of product that I make, so I must multiply each of my ingredients by 2. I would now use 2 bags of flower and 4 eggs.
how many grams of CaO will be made from 3 mol CaCO3 please help i’m marking brainliest!!!
Convert 0.00045 kg to mg.
Answer:
Hello There!!
Explanation:
The answer is 450,you times by a million to get this answer.
hope this helps,have a great day!!
~Pinky~
[tex]\huge{\textbf{\textsf{{\color{navy}{An}}{\purple{sw}}{\pink{er}} {\color{pink}{:}}}}}[/tex]
450 mg.
Thanks.Hope it helps.Does anyone know any top brainly users that are good at chemistry?
Answer:
yes
Explanation:
Answer:
These people were ranked best at chemistry
Explanation:
BRANLIEST NO EXPLANATION NEEDED.
When a cube of manganese oxide was added to a solution of hydrogen peroxide, water and oxygen were produced. Manganese oxide was not used up in the reaction. Which of the following is likely to increase the rate of the reaction? (5 points)
Reducing the mass of the cube
Using a smaller amount of solution
Smashing the cube into pieces
Chilling the hydrogen peroxide solution
Answer:
Smashing the cube into pieces
Explanation:
The reason for this is that if we were to smash the cube we would have a larger surface area which means more manganese oxide would be dissolving per second which means we would have a faster reaction rate where if we were to chill the peroxide it would dissolve slower which in turn slows the reaction. For example a spoonful of granulated sugar will react with water faster than a sugar cube.
The rate of the reaction is increased by smashing the cube into pieces. C is the correct answer.
What is the reaction rate?The reaction rate, also known as the rate of reaction, is the rate at which a chemical reaction occurs.
It is typically classified as proportional to the change in product concentration per unit time and the change in reactant concentration per unit time. Different chemical reactions have different reaction rates.
The amount of reactants, the temperature, and the catalyst all influence the reaction rate.
When a cube of manganese oxide was added to a solution of hydrogen peroxide, water and oxygen were produced, just as in the given reaction. The reaction did not deplete manganese oxide.
The reaction will be altered by smashing the cube into pieces as the it can boost appropriate conditions for the reaction.
Thus, C is the correct answer.
For more information on reaction rate, go to:
brainly.com/question/13440548
#SPJ2
Will give brainliest please help!!
Answer:
I think it's B so maybe
The alignment of the Sun, Earth and Moon can produce shadows on the Earth or Moon
resulting in:
very long nights
equinox
solar and lunar eclipses
longer seasons
Answer:
SOLAR AND LUNAR ECLIPSEHelp please with the 2 questions i will mark you brainliest
Answer:
The first one would be "Both Mixtures and Compounds", while the second one would be "Solution 2 - Because she used more salt".
Explanation:
An element is made up of atoms, but to make a mixture or compound you are combining multiple elements. And when look at the second question, assuming they have the same amount of water, there is a higher ratio of salt in the second one, which would make it more concentrated.
How many grams of neon does it take to make this peace sign holding 0.080 moles
of neon gas?
In triangle ABC,m angle C=90^ , m angle A=54^ , and CA = 10 centimeters . What is the length of overline AB to the nearest centimeter
Answer:
AB = 17 cm
Explanation:
NOTE: This is a mathematics question. Nevertheless, the answer to the question is given below
Please see attached photo for diagram.
The length of AB can be obtained as follow:
Angle A = 54°
Adjacent = 10 cm
Hypothenus = AB =?
Using the Cos ratio, we can simply obtain the length of AB as follow:
Cos A = Adjacent /
Cos 54 = 10 / AB
0.5879 = 10 /AB
Cross multiply
0.5879 × AB = 10
Divide both side by 0.5878
AB = 10 / 0.5878
AB = 17 cm
Water can form a solution by mixing with:
Gases only
Solids and gases
Solids only
Solids, liquids, and gases
Explanation:
Solid, liquids and gases
Answer:
Solid, liquids and gases
Explanation:
explain ocean acidification
Answer:
Ocean acidification refers to a reduction in the pH of the ocean over an extended period of time, caused primarily by uptake of carbon dioxide (CO2) from the atmosphere
Explanation:
Answer:
Ocean acidification affects marine life
Acidification reduces the availability of carbonate ions in ocean water, which provide the building blocks these organisms need to make their shells and skeletons, significantly reducing the chances for their offspring to survive.
Explanation:
Ocean acidification is the ongoing decrease in the pH of the Earth's oceans, caused by the uptake of carbon dioxide (CO. 2) from the atmosphere. The main cause of ocean acidification is the burning of fossil fuels.
use the following: Chlorine is used to bleach cloth. Excess Chlorine is destroyed by its reaction with Sodium Thiosulfate (Na2S2O3) according to the unbalanced equation Na2S2O3 + Cl2 + H2O → NaHSO4 + HCl.
How many moles of HCI can be formed from 0.25 moles of CI2?
A. 0.10 mol HCI
B. 0.20 mol HCI
C. 0.30 mol HCI
D. 0.40 mol HCI
E. 0.50 mol HCI
Answer:
Explanation:
Na₂S₂O₃ + 4Cl₂ + 5H₂O → 2NaHSO₄ + 8HCl.
4 moles 8 moles
4 moles of Cl₂ forms 8 moles of HCl
.25 moles of Cl₂ forms 8 x .25 / 4 moles of HCl
HCl formed = .50 moles .
E is the answer .
How many moles is 45g of KCl?
Answer:
60.36
Explanation:
Answer: 0,60 mol
Explanation:
Molar mass of KCl is M = (39.10 + 35.45) g/mol = 74,55 g/mol
amount of substance n = m/M = 45 g / 74.55 g/mol
Help me get it right and no links
What is the pH of .038 M HCI?
Answer:
is simple apply formula dude.
help me get this right no links
Answer:
the rise and fall is the tides.