Answer: 236.588
Explanation:
Answer:
8.000 fl = 236588.2375ml
Increasing the temperature of a particular liquid from 298 K to 318 K causes its vapor pressure to double. What is the enthalpy of vaporization of this liquid
Answer:
27.3 kJ/mol
Explanation:
Step 1: Given data
Temperature 1 (T₁): 298 KVapor pressure 1 (P₁): P₁Temperature 2 (T₂): 318 KVapor pressure 2 (P₂): 2 P₁Step 2: Calculate the enthalpy of vaporization of this liquid
We will use the Clausius–Clapeyron equation.
ln (P₂/P₁) = -ΔHvap/R × (1/T₂ - 1/T₁)
ln 2 = -ΔHvap/(8.314 J/K.mol) × (1/318 K - 1/298 K)
ΔHvap = 2.73 × 10⁴ J/mol = 27.3 kJ/mol
An atom is to a mole as A.A dozen is to an egg B.An egg is to a dozen C.A goose is to a gaggle D.Both B and C
Answer: The correct option is D) Both B and C.
Explanation:
Mole is defined as the measurement of a substance that contains [tex]6.022\times 10^{23}[/tex] a number of particles (atoms, molecules, ions, etc..)
A dozen simply means that there is 12 number of articles like eggs, bananas, etc..
A gaggle is known as the collection of goose.
When an atom is compared with a mole, then an egg will be compared with a dozen, and a goose will be compared with a gaggle.
Thus, an atom is to a mole as an egg is to a dozen and a goose is to a gaggle.
Name the following ketone:
a solution that contains a large amount of solute would be described as what
Answer:
A concentrated solution is one that has a relatively large amount of dissolved solute. A dilute solution is one that has a relatively small amount of dissolved solute.
Which type of scientist would most likely investigate how to synthesize
materials found in plants?
O A. A geologist
O B. A biologist
O C. A chemist
OD. A physicist
Answer:
Biologist
Explanation:
Not sure, but I think that is right
1,500 grams is equal to:
1.5 kg
1.5L
1.5 cm
all of the above
A sample of nitrogen dioxide gas is confined at 127°C and 2.5 atm what would be the pressure of the sample at 27°C?
Explanation:
T1= 127°C=400k
T2=27°C=300k
P1=2.5atm
P2=?
.... Is this question complete?
When Justin added deionized water to the volumetric flask, he accidentally filled the flask so that the water level was slightly above the mark. He still assumed that the flask was holding 100.0 mL when he calculated the density of the solution, however. How will this procedural error affect his calculated density value
Answer:
The actual value of density will be less than the calculated value of density
Explanation:
Density is defined as mass per unit volume. This means that the value of the density of the substance depends on both its mass and its volume.
Since the volume of the water used in the experiment is greater than the required 100mL yet a volume of 100mL was used in the calculation, the actual density of the substance is less than the calculated value of density.
Which is the correct Lewis structure for carbononitridic chloride (CNCl)?
Answer:
A.
Explanation:
Hello there!
In this case, according to the given information, it turns out possible for us to figure out the correct Lewis dot structure, by realizing chlorine has seven valence electrons, carbon has four of them and nitrogen five, it means that C and Cl form a single a bond and C and N form a triple bond for allowing the three of them to complete the octet; it means Cl remains with three lone pairs, N with one lone pair and C with no lone pairs; therefore, the answer is A.
Regards!
The limiting reactant in a chemical reaction is the reactant __________ Select one: A. for which you have the lowest mass in grams. B. which has the lowest coefficient in the balanced equation. C. which has the lowest molar mass. D. which is left over after the reaction has gone to completion. E. None of the above.
Answer:
i think its A
A solid cylinder having a diameter of 1.50 cm and a height of 5.15 cm has a mass of 95.56 g. Show the equations needed to calculate the density of a solid.
Answer:
you can solve the rest of the equation. I only reduced it to that much to show you how to derive it
The density of the solid cylinder given the data from the question is 10.5 g/cm³
What is density?The density of a substance is simply defined as the mass of the subtance per unit volume of the substance. Mathematically, it can be expressed as
Density = mass / volume
How to determine the volume of the cylinderDiameter = 1.50 cm Radius (r) = Diameter / 2 = 1.5 / 2 = 0.75 cmPi (π) = 3.14Height (h) = 5.15 cmVolume (V) = ?V = πr²h
V = 31.4 × 0.75² × 5.15
V = 9.1 cm³
How to determine the density
Mass = 95.56 gVolume = 9.1 cm³Density =?Density = mass / volume
Density = 95.56 / 9.1
Density = 10.5 g/cm³
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If 0.5 L of O2(g) reacts with H, to produce 1 L of H2O(g), what is the volume of
H2O(g) obtained from 1 L of O2(g)?
-
0.5 L
2.5 L
2 L
1.5 L
Answer:
2 L
Explanation:
We'll begin by writing the balanced equation for the reaction. This is given below:
2H₂ + O₂ —> 2H₂O
From the balanced equation above, we can see clearly that 1 L of O₂ reacted to 2 L of H₂O.
This implies that 2 L of H₂O can be obtained by the reaction of 1 L of O₂.
Thus, option 3 gives the correct answer to the question.
What is reduction potential?
The degree of ionization of a weak acid ________ I. varies with the concentration of the acid. II. depends on which weak acid it is. III. is 100%. IV. is greater than 50% but less than 100%.
Answer: The degree of ionization of a weak acid is greater than 50% but less than 100%.
Explanation:
An acid which dissociates partially or weakly when dissolved in water is called a weak acid.
For example, acetic acid [tex](CH_{3}COOH)[/tex] is a weak acid.
Hence, the degree of ionization of a weak acid is greater than 50% but less than 100%.
Thus, we can conclude that the degree of ionization of a weak acid is greater than 50% but less than 100%.
A rod “X”, has a positive charge of 5. An otherwise identical rod, “Y”, has a negative charge of 12.
The rods are touched together and then separated.
a) When they touched, what particles moved between them?
b) Did the particles move from “X” to “Y” or from “Y” to “X”.
Answer:
a) electrons
b) from Y to X
Explanation:
positive protons are the cores of atoms in relative to electrons very, very heavy.
the outer electrons of atoms can move, under certain conditions, away from the atom, leaving it electrically unbalanced -> positively charged
there can also be a surplus of electrons on many surfaces, leading to a static negative charge. you know this when you are charged and you discharge with an object or another person, electrically balancing the two bodies charge.
electrons are also much smaller. they are the "things" to move, let it be trough the air or trough a wire, while the heavy protons will stay in place (unless the materials is melted of course, extreme heat brakes the bounds between atoms relatively well)
To make a 0.500 M solution, one could take 0.500 moles of solute and add Group of answer choices enough solvent to make 1.00 kg of solution. enough solvent to make 1.00 L of solution. 1.00 L of solvent. 1.00 kg of solvent.
Answer: The correct option is enough solvent to make 1.00 L of solution
Explanation:
A solution consists of solute and solvent. A solute is defined as the component present in a smaller proportion while the solvent is defined as the component that is present in a larger proportion.
Molarity is defined as the amount of solute expressed in the number of moles present per liter of solution. The units of molarity are mol/L. The formula used to calculate molarity:
[tex]Molarity=\frac{Moles}{Volume}[/tex] .......(1)
We are given:
Molarity of solution = 0.500 M
Moles of solute = 0.500 moles
Putting values in equation 1, we get:
[tex]0.500mol/L=\frac{0.500mol}{\text{Volume of solution}}\\\\\text{Volume of solution}=\frac{0.500mol}{0.500mol/L}=1.00L[/tex]
Hence, the correct option is enough solvent to make 1.00 L of solution
The element tin has the following number of electrons per shell: 2, 8, 18, 18, 4. Notice that the number of electrons in the outer shell of a tin atom is the same as that for a carbon atom. Therefore, what must be true of tin
The question is incomplete, the complete question is:
The element tin has the following number of electrons per shell: 2.8. 18, 18, 4. Notice that the number of electrons in the outer shell of a tin atom is the same as that for a carbon atom. Therefore, what must be true of tin? Tin is a polar atom and can bind to other polar atoms. Tin has a high molecular weight to give tin-containing molecules greater stabilty. All of the above Tin conform single covalent bonds with other elements, but not double or triple covalent bonds Tincan bind to up to four elements at a time
Answer:
Tin can bind to up to four elements at a time
Explanation:
Certain important points were made in the question about tin and one of them is that tin is an element in the same group as carbon hence it has the same number of valence electrons as carbon.
Carbon is always tetra valent. The tetra valency of carbon is the idea that carbon forms four bonds.
If tin has the same number of valence electrons as carbon, then, tin can bind to up to four elements at a time
Given the balanced reaction: Zn + 2HCl → H2 + ZnCl2
If 5 grams of each reactant are available for the reaction and HCl is known
to be the limiting reactant, which of the following is correct?
O Both reactants will be completely used up.
O There will be excess of both reactants remaining.
O HCl will be completely used up while Zn will remain in excess.
O Zn will be completely used up while HCl will remain in excess.
Answer:
O HCl will be completely used up while Zn will remain in excess.
Explanation:
Zn + 2HCl → H₂ + ZnCl₂In reactions involving two reactants, if one of them is the limiting reactant then the other one has to be the reactant in excess.
Meaning that in this case, the reaction will proceed until HCl is completely used up, and a certain amount of Zn will remain (thus being the reactant in excess).
What is the limiting reactant for the following reaction given we have 2.6 moles of HCI and 1.4 moles of
Ca(OH)2?
Reaction: 2HCI + Ca(OH)2 → 2H2O + CaCl2
gress.
Newton's third law of motion
Is the following statement true or false?
When a large truck pushes a small car with a given force, the small car is applying an equal and opposite
force on the truck.
Choose 1 answer:
True
False
Answer:
true
Explanation:
the small car also has gravity making it heavy
An elementary step is defined as a chemical collision in a reaction mechanism. A collection of different types of collisions makes up the reaction mechanism, so elementary steps provide a molecular view of the overall reaction.
a. True
b. False
whats the process by which a substance changes from a gaseous state???
PLS HELPPPP!!!!!!!! THANK YOU
Answer:
The process by which a substance changes from gas to liquid is Condensation
Answer:
the process is called 'condensation'
What is the mass, in grams, of 0.125 L of CO2 at a temperature of
273 K and a pressure of 760 torrs?
Answer:
0.25 g
Explanation:
We'll begin by writing the number of mole of CO₂. This can be obtained as follow:
Volume (V) = 0.125 L
Temperature (T) = 273 K
Pressure (P) = 760 torr = 1 atm
Gas constant (R) = 0.0821 atm.L/Kmol
Number of mole (n) =?
PV = nRT
1 × 0.125 = n × 0.0821 × 273
0.125 = n × 22.4133
Divide both side by 22.4133
n = 0.125 / 22.4133
n = 0.0056 mole
Finally, we shall determine the mass of 0.0056 mole of CO₂. This can be obtained as follow:
Number of mole of CO₂ = 0.0056 mole
Molar mass of CO₂ = 12 + (2×6)
= 12 + 32
= 44 g/mol
Mass of CO₂ =?
Mass = mole × molar mass
Mass of CO₂ = 0.0056 × 44
Mass of CO₂ = 0.25 g
Thus, the mass of CO₂ is 0.25 g
PLEASE HELP‼️‼️
A
B
C
D
an atom has 31 electrons 39 neutrons and 31 protons. it follows that its mass number is
Answer:
mass no = 70 amu
mass no = neutrons+ protons
pls mark me as the brainliest
Explanation:
if the radius of a potassium atom is 2.27 x 10-7 mm what is the radius in μm
Explanation:
the answer is in the Image above
The radius of the potassium atom is [tex]2.27\times 10^{-4} \mu m[/tex].
Explanation:
Given:
The radius of potassium atom =[tex]2.27\times 10^{-7} mm[/tex]
To find:
The radius of potassium atom in micrometers.
Solution:
The radius of potassium atom =[tex]2.27\times 10^{-7} mm[/tex]
In 1 millimeter there are 1000 micrometers.
[tex]1 mm = 1000 \mu m[/tex]
Then in [tex]2.27\times 10^{-7} mm[/tex]:
[tex]=2.27\times 10^{-7} \times 1000\\=2.27\times 10^{-4} \mu m[/tex]
The radius of the potassium atom is [tex]2.27\times 10^{-4} \mu m[/tex].
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5
The
(1 Point)
can change when describing motion. It is just the chosen starting point.
displacement
distance
reference point
speed
At 258C, Kp 5 2.9 3 1023 for the reactionNH4OCONH21s2m 2NH31 g21 CO21 g2In an experiment carried out at 258C, a certain amount of NH4OCONH2 is placed in an evacuated rigid container and allowed to come to equilibrium. Calculate the total pressure in the container at equilibrium.
Answer:
0.27 atm
Explanation:
At 25ºC, Kp = 2.9 x 10⁻³ for the reaction NH₄OCONH₂(s) ⇌ 2 NH₃(g) + CO₂(g). In an experiment carried out at 25ºC, a certain amount of NH₄OCONH₂ is placed in an evacuated rigid container and allowed to come to equilibrium. Calculate the total pressure in the container at equilibrium.
Step 1: Make an ICE chart
Solid and liquids are ignored in ICE charts.
NH₄OCONH₂(s) ⇌ 2 NH₃(g) + CO₂(g)
I 0 0
C +2x +x
E 2x x
Step 2: Write the pressure equilibrium constant expression (Kp)
Kp = [NH₃]² × [CO₂]
Kp = (2x)² × x
2.9 × 10⁻³ = 4 x³
x = 0.090 atm
Step 3: Calculate the pressures at equilbrium
pNH₃ = 2x = 2(0.090 atm) = 0.18 atm
pCO₂ = x = 0.090 atm
The total pressure is:
P = 0.18 atm + 0.090 atm = 0.27 atm
11. Is H20 a compound, mixture or element?
Answer:
H20 is a compound
Explanation:
(H2O) is a compound consisting of two hydrogen atoms bonded to an oxygen atom.
what climate zone is asia?
Answer:
The Tundra Climate
Explanation:
:) hope this helps
