Answer:
The answer is C. Convection.
C Covention hope it help
What is the molarity of 2.00 L of a solution that contains 14.6 g NaCl?
Thank you so much I am having a tough time with this one.
Answer: The molarity of the solution is 0.125 M
Explanation:
Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.
[tex]Molarity=\frac{n}{V_s}[/tex]
where,
n = moles of solute
[tex]V_s[/tex] = volume of solution in L
moles of [tex]NaCl[/tex] = [tex]\frac{\text {given mass}}{\text {Molar mass}}=\frac{14.6g}{58.5g/mol}=0.250mol[/tex]
Now put all the given values in the formula of molality, we get
[tex]Molarity=\frac{0.250mol}{2.00L}=0.125M[/tex]
Therefore, the molarity of the solution is 0.125 M
Plz answer very easy question
What are 2 facts about neon
If a reaction starts with 18.8 g of A and 9.4 grams of B, and 6 grams of C is produced, how many grams of D is made?
A+B --> C + D
Answer:
gis bdu sjfdj fbgd gadi besw ......c?●q
when u get ur answer what type of reaction is it?
-double replacement
-combustion
-synthesis
-decomposition
-single replacement
Answer: combustion reaction
[tex]C_{25}H_{52}+38O_2\rightarrow 25CO_2+26H_2O[/tex]
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side.
The balanced chemical equation is:
[tex]C_{25}H_{52}+38O_2\rightarrow 25CO_2+26H_2O[/tex]
The given reaction is a combustion reaction as in a combustion reaction , a susstaance is oxidized in the presence of oxygen to give carbon dioxide and water.
What is the molarity of a solution with a 10.0 g AgNO3 dissolved in 0.5 L of solution ?
How does mass affect potential energy?
What i would say: The amount of gravitational potential energy an object has depends on its height and mass. The heavier the object and the higher it is above the ground, the more gravitational potential energy it holds. Gravitational potential energy increases as weight and height increases.
Hope this helps! :)
Loren has the samples of elements that are listed below at room temperature. He exposes the samples to the same heat source until each sample reaches a temperature of 90.0°C. 10 g of Al(s) (C subscript p. = 0.897 J/(gi°C)) 10 g of Ag(s) (C subscript p.= 0.234 J/gi°C ) 10 g of Fe(s) (C subscript p. = 0.450 J/gi°C) 10 g of Zn(s) (C subscript p. = 0.387 J/gi°C ) From first to last, which lists the order in which these samples will reach 90.0°C? Al, Fe, Zn, Ag Ag, Zn, Fe, Al Al, Fe, Ag, Zn Ag, Al, Zn, Fe
The order in which the substances will reach 90.0°C is; Ag, Zn, Fe, Al.
What is specific heat capacity?The term specific heat capacity refers to the quantity of heat that is required to raise the temperature of an object by 1K. The higher the heat capacity, the greater the heat that is required for the object to reach 90.0°C.
The order in which the substances will reach 90.0°C is; Ag, Zn, Fe, Al. We can see that Ag has the lowest heat capacity and the first to reach 90° while All has the highest heat capacity and the last to reach 90°.
Learn more about heat capacity:https://brainly.com/question/13499849
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What must happen for heat to be transferred by convection?
Answer:
D.) The liquid or gas must circulate to move the heat
Explanation:
CHCl3 has how many double bonds?
Answer:
It has two sigma bonds ( the single bonds between each H and C) plus one pi bond and one sigma bond that consitute the double bond between C and O. It contains three covalent bonds, one . Hydrogen Bond Donor Count: 0: Computed by Cactvs 3.4.
Explanation:
Hope it helps you!
please if you know help
please
the formula of copper sulfate crystals is CuSo4.5H2O. 400ml of 0.02mol/l copper (ii) sulfate solution is needed to be prepered .
a. calculate the molar mass of the solute .
b. calculate the mass of the solute that sould be weighted to prepare this solution .
c. describe in details the steps of preperation of the solution
Answer: a. 249.5 g/mol
b. 1.996 g
c. Measure 1.996 g of [tex]CuSO_4.5H_2O[/tex] and dissolve in water until the volume is 400 ml
Explanation:
Molar mass is the sum of atomic masses of all the elements present.
Thus molar mass of [tex]CuSO_4.5H_2O[/tex] = 1(63.5)+1(32)+4(16)+5(18) = 249.5 g/mol
Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.
To calculate the number of moles for given molarity, we use the equation:
[tex]\text{Molarity of the solution}=\frac{\text{given mass of solute}\times 1000}{\text {Molar mass of solute}}\times \text{Volume of solution in ml}}[/tex]
[tex]0.02mol/L=\frac{x\times 1000}{249.5g/mol\times 400}[/tex]
[tex]x=1.996 g[/tex]
c. We need to measure 1.996 g of [tex]CuSO_4.5H_2O[/tex] and dissolve it in water to make the volume 400 ml.
what dose the atomic number of an element represent
Answer:
No. of electrons of the element
Pls help ASAP!!! 70 points for answer
Which of the following is an explanation of how the natural world works, based on experimentation? An analysis A law An opinion A theory
Answer:
A theory
Explanation:
Which is not an example of chemistry research in the field of energy?
a. producing hook-and-loop tape
b. developing rechargeable batteries
c. determining the usefulness of oil from soybean plants
d. studying the effects of insulation
Answer:
A.producing hook-and-loop tape
Explanation:
hope it's help..
Answer:
A) producing hook-and-loop tape
Explanation:
Match the term to its best description.
A. Bond in which one atom is much more
electronegative than the
other
B. Determines what type of
bond will form
Electronegativity
C. A type of covalent bond
D. Positive ion
1. Metallic
2. Ionic
3. Electronegativity
4. Cation
Answer:
A) 2
B) 1
C) 3
D) 4
i hope its right
When an atom of oxygen (O) forms an anion by gaining two electrons, what is the anion’s charge?
Answer:
Oxygen has an electron arrangement of (2, 6) and needs to gain two electrons to fill the n=2 energy level and achieve an octet of electrons in the outermost shell. The oxide ion will have a charge of 2− as a result of gaining two electrons
which changes of state require a decrease in energy
Answer:
freezing,
deposition
evaporation
Which of the following is NOT true about a space-based internet system?
Answer:
no questions and no list
A pitcher threw a baseball straight up at 35.8 meters per second. What was the ball’s velocity after
2.50 seconds? (Note that, although the baseball is still climbing, gravity is accelerating it downward.)
Answer:
9.8
Explanation:
Fill in the blanks and name the process.
What is the process of ____ reproduction where a cell makes ___ of itself?
HELPPPP A student has 32.3 g of carbon dioxide (CO2). How many moles of carbon
dioxide are contained in this sample?
Do you have the answers for this test ?!?Im taking it right now and grades are due this friday so I need to pass this test
How would adding the catalyst nitrogen monoxide (NO) affect this reaction?
2SO2(g) + O2(g) → 2SO3(g)
A.
NO increases the rate at which SO3 molecules are formed.
B.
NO reacts with SO3 to produce more SO2 molecules.
C.
NO decreases collisions between the SO2 and O2 molecules.
D.
NO increases the concentration of the SO2 and O2 molecules.
E.
NO increases the activation energy of the SO2 and O2 molecules
Answer:
C
Explanation:
Answer: A. NO increases the rate at which SO3 molecules are formed.
Explanation: I got this right on Edmentum.
How much will atmospheric carbon change in one year?
Answer:
Carbon dioxide is a greenhouse gas: a gas that absorbs heat. Warmed by sunlight, Earth’s land and ocean surfaces continuously radiate thermal infrared energy (heat). Unlike oxygen or nitrogen (which make up most of our atmosphere), greenhouse gases absorb that heat and release it gradually over time, like bricks in a fireplace after the fire goes out. Without this natural greenhouse effect, Earth’s average annual temperature would be below freezing instead of close to 60°F. But increases in g...
Explanation:
PLEASE HELP ASAP!!!!!!!!!! WILL GIVE BRAINLIEST TO CORRECT ANSWER!
Read the given chemical reaction.
C2H6 + O2 → CO2 + H2O
How many moles of H2O are produced during the complete combustion of 1.4 moles of C2H6?
A. 5.6 moles
B. 2.8 moles
C. 7.0 moles
D. 4.2 moles
What is the organelle that contains DNA?
golgi apparatus
ribosomes
endoplasmic reticulum
chromosomes
Give 3 examples of a solution
Answer:
Comrade, figures, and sad
Explanation
The solution of sugar, salt etc in water.
Sublimation of substances like iodine, camphor etc into the air.
Hydrated salts, mercury in amalgamated zinc,
Alcohol in water, benzene in toluene
Which is a renewable energy source?
a. Coal
b. Petroleum
c. natural gas
d. hydroelectric
Answer:
The answer is D. Hydroelectric
Answer:
natural gas
Explanation:
Explain the ways that carbon dioxide is added to the atmosphere. How is it removed? Does most carbon enter the atmosphere as carbon dioxide or is it in another form? How do increased levels of carbon dioxide in the atmosphere affect the earth?
Answer:
Carbon dioxide is added to the atmosphere by human activities. When hydrocarbon fuels (i.e. wood, coal, natural gas, gasoline, and oil) are burned, carbon dioxide is released. During combustion or burning, carbon from fossil fuels combine with oxygen in the air to form carbon dioxide and water vapor.Carbon moves from fossil fuels to the atmosphere when fuels are burned. When humans burn fossil fuels to power factories, power plants, cars and trucks, most of the carbon quickly enters the atmosphere as carbon dioxide gas. Each year, five and a half billion tons of carbon is released by burning fossil fuels.Carbon dioxide causes about 20 percent of Earth's greenhouse effect; water vapor accounts for about 50 percent; and clouds account for 25 percent.Likewise, when carbon dioxide concentrations rise, air temperatures go up, and more water vapor evaporates into the atmosphere—which then amplifies greenhouse heating
Please help!! A 22.4 L Sample of which of the following substances, at STP, would contain Avogadro’s number of particles?
A. Phosphorus B. Mercury C. Nitrogen
1. waves that use matter to transfer energy
2. rhythmic disturbance that carries
energy
3. waves in which matter in the medium
moves in the same direction as the wave
4. example of a compressional wave
5. example of a mechanical wave
6. The matter in the medium moves up
and down or back and forth at right
angles to the direction the wave travels.
7. waves that do not require matter
to carry energy
8. ripples on the surface of a pond
9.the matter though which a mechanical wave travels
10.vibration of vocal chords creates this
Definitions: a. Water wave
b. Compressional waves
c. Transverse wave
d. wave
e.mechanical wave
f. electromagnetic wave
g. Sound wave
h. medium
Please match all the terms in the right spot and btw you will be able to use the same term more then once’s
Answer:
1. e
2. d
3. b
4. g
5. g, a both work
6. c
7. f
8. a, d both work
9. h
10. g
Explanation: