Answer:
B 1.17
Explanation:
There is .02 mols of nacl in a .4M solution
so you multiply by the molar weight of NaCl (58.44)
How many moles of CH2 must react in order to produce 50 moles
What is the name of Earth's home galaxy?
The Milky Way
The Elliptical
The Spiral Way
The Irregular
100 points
Answer:
The Milky Way
Explanation:
Answer:
Your answer is the Milky WAy!
Brainliest?
what is a recessive allele in a genotype is represented by pleaseee helpp
How many molecules are in 4.67 mols of H2O
Answer:
2.81 × 10²⁴ moleculesExplanation:
The number of molecules can be found by using the formula
N = n × L
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
We have
N = 4.67 × 6.02 × 10²³
We have the final answer as
2.81 × 10²⁴ moleculesHope this helps you
Select the element(s) that will have ONE unpaired electron in the p orbital.
Ca
N
B
Ar
Br
Answer: The element B will have ONE unpaired electron in the p orbital.
Explanation:
The electronic configuration of each given element is as follows.
Atomic number of calcium (Ca) is 20.
Ca: [tex]1s^{2} 2s^{2} 2p^{6} 3s^{2} 3p^{6} 4s^{2}[/tex]
Atomic number of nitrogen (N) is 7.
N: [tex]1s^{2} 2s^{2} 2p^{3}[/tex]
Atomic number of boron (B) is 5.
B: [tex]1s^{2} 2s^{2} 2p^{1}[/tex]
Atomic number of argon (Ar) is 18.
Ar: [tex]1s^{2} 2s^{2} 2p^{6} 3s^{2} 3p^{6}[/tex]
Atomic number of bromine (Br) is 35.
Br: [tex][Ar] 4s^{2} 3d^{10} 4p^{5}[/tex]
Therefore, boron is the only element that have one unpaired electron in the p-orbital.
Thus, we can conclude that element B will have ONE unpaired electron in the p orbital.
Which two come together to form an ionic bond?
a. a positive cation and a ngetaive cation
b. a positive cation and a negative anion
c. a positive cation and a positive anion
d. a positive anion and a negative anion
[tex]\huge \fbox \pink {A}\huge \fbox \green {n}\huge \fbox \blue {s}\huge \fbox \red {w}\huge \fbox \purple {e}\huge \fbox \orange {r}[/tex]
b. a positive cation and a negative anion
✏ Anions are negative in nature while cations are positive in nature. Together they come together by an attractive electrostatic force to form an ionic bond.
ʰᵒᵖᵉ ⁱᵗ ʰᵉˡᵖˢ
[tex] \huge\blue{ \mid{ \underline{ \overline{ \tt ꧁❣ ʀᴀɪɴʙᴏᴡˢᵃˡᵗ2²2² ࿐ }} \mid}}[/tex]
What is the relationship between temperature and volume?
Answer:
Charles's law states that the volume of a given amount of gas is directly proportional to its temperature on the kelvin scale when the pressure is held constant
The volume of a given gas sample is directly proportional to its absolute temperature at constant pressure (Charles's law). The volume of a given amount of gas is inversely proportional to its pressure when temperature is held constant (Boyle's law)
Explanation:
~Hope this helps
A solution has a pH of 10.
What is the concentration of hydrogen ions?
How many grams of potassium carbonate are needed to make 200 mL of a 2.5 M solution?
If I want to use 78 grams of isoproponol (C3H8O) in a reaction, how many mL do I need of a 3.4 M solution?
I have two solutions. In the first solution, 1.0 moles of sodium chloride is dissolved to make 1.0 liters of solution. In the second one, 1.0 moles of sodium chloride is added to 1.0 liters of water. Is the molarity of each solution the same? Explain your answer
Please help, thanks!
Answer:
The molecular formula for Potassium Carbonate is K2CO3. The SI base unit for amount of substance is the mole. 1 grams Potassium Carbonate is equal to 0.0072356020563581 mole. Note that rounding errors may occur, so always check the results.
Explanation:
The molecular formula for Potassium Carbonate is K2CO3. The SI base unit for amount of substance is the mole. 1 grams Potassium Carbonate is equal to 0.0072356020563581 mole.
A galvanic cell generates a cell potential of 0.32V when operated under standard conditions according to the reaction above. Which conditions are needed to construct a similar cell that generates the lowest cell potential?
The complete question is shown in the image attached to this answer.
Answer:
C
Explanation:
Let us quickly remember that the EMF of a cell under non standard conditions in given by the Nernst equation.
This equation states that;
E = E°cell - 0.592/n log Q
Where
E = EMF under non standard conditions
E°cell= standard EMF of the cell
n = number of electrons transferred
Q = reaction quotient
If the reaction quotient is greater than 1 then cell potential is less than the standard cell potential.
The cell that generates the lowest cell potential is the cell depicted in option C because Q has the greatest positive value(Q<1).
The cell potential is the redox potential that measures the acquired to lost electrons at the electrodes. The lowest cell potential is generated by cell C with 0.5 M.
What is EMF?EMF is the electromotive force that is the total of the electric potential difference produced at the half cells of the galvanic cell (electrochemical cell).
EMF of the cell is given as,
[tex]\rm E = \rm E^{\circ} - \dfrac{0.592}{n}\; log Q[/tex]
Here, E is the electromotive force, [tex]\rm E^{\circ}[/tex] is the standard EMF, n is the number of the transferred electrons, and Q is the reaction quotient.
When the reaction quotient (Q) is greater than 1 then, cell potential will be less than standard cell potential.
Therefore, cell C with 0.5 M and Q > 1 is a similar cell.
Learn more about galvanic cells here:
https://brainly.com/question/23819073
In the graphic,
X represents which element?
40
20
Answer:Ca
Explanation:
250 mL of water is collected during a combustion reaction. The temperature in the
room is 23 °C and the pressure is 105 kPa. How many moles of water was collected?
Answer:
0.011 moles
Explanation:
Applying,
PV = nRT.................... Equation 1
Where P = Pressure, V = Volume, n = number of moles, R = Molar gas constant, T = Temperature.
Make n the subject of the equation
n = PV/RT.................. Equation 2
From the question,
Given: P = 105 kPa = (105×0.00986923) = 1.036 atm, V = 250 mL = 0.25 L, T = 23 °C = (273+23) = 296 °C
Constant: R = 0.082 atm.dm³/K.mol
Substitute these values into equation 2
n = (1.036×0.25)/(0.082×296)
n = 0.011 moles
N2O3 → N2 + O2
Name the reactants in this reaction.
Name the products in this reaction.
[tex]\text{N}_{2}\text{O}_{3}=\text{nitrogen trioxide}\\\text{N}_{2}=\text{nitrogen}\\\text{O}_{2}=\text{oxygen}[/tex]
For the reaction: 2H2 + O2 → 2H2O, how many grams of water are produced from
6.00 moles of H2?
Answer:
108 g
Explanation:
2H₂ + O₂ → 2H₂OFirst we convert 6.00 moles of H₂ into moles of H₂O, using the stoichiometric coefficients of the reaction:
6.00 mol H₂ * [tex]\frac{2molH_2O}{2molH_2}[/tex] = 6.00 mol H₂OThen we can convert 6.00 moles of H₂O into grams, using the molar mass of water:
6.00 mol H₂O * 18 g/mol = 108 gThe answer is 108 grams of water.
Why do different parts of the world have such different animals?
Answer:
a
Explanation:
if a material conducts heat easily, its a good _____.
It has to be a 18 letter word
Answer:
a thermal conductor
Explanation:
thats what its called
convert 32 degrees celsius to kelvin
Answer:
305.15
Explanation:
32 celsius converted to kelvin is 305.15 kelvin
Formula
32°C + 273.15 = 305.15K
A solution has a [OH−] of 1 x 10^−11 M. What is the [H3O+] of the solution?
Explanation:
Ionic product of water, Kw
[tex]Kw = [OH {}^{ - } ][H _{3} O {}^{ + } ] \\ 1.0 \times {10}^{ - 14} = (1 \times {10}^{ - 11} )[H _{3} O {}^{ + } ] \\ [H _{3} O {}^{ + } ] = \frac{(1.0 \times {10}^{ - 14}) }{(1 \times 10 {}^{ - 11}) } \\ ][H _{3} O {}^{ + } ] = 0.001 \: M[/tex]
Calculate the molarity of a solution that contains 5 mol of Li2O in 2.35 L of solution.
Answer:
2.13 M
Explanation:
To solve this problem we need to keep in mind the definition of molarity:
Molarity = moles / litersAs the problem gives us both the number of moles and the volume of solution, we can proceed to calculate the molarity:
Molarity = 5 mol / 2.35 LMolarity = 2.13 MThe answer is 2.13 M.
What volume, in milliliters,
Answer:
25.4
Explanation:
PLZ mark me brainlist
The force needed to overcome the attraction among molecules at the surface of a liquid is called?
Answer:
The type of force is known as cohesive force
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In each of the molecules drawn below one chemical bond is colored red. Decide whether this bond is likely to be polar or not. If the bond is likely to be polar, write down the chemical symbol for the atom which will have more negative charge. The highlighted bond is polar and the more negative atom is The highlighted bond is nonpolar. The highlighted bond is polar and the more negative atom is The highlighted bond is nonpolar. The highlighted bond is polar and the more negative atom is The highlighted bond is nonpolar.
The question is incomplete, the complete question is shown in the image attached to this answer
Answer:
See Explanation
Explanation:
I want us to bear something in mind. A compound is polar when there is a considerable difference in electronegativity between two bonding atoms in the molecule.
The implication of this is, the shared electron pair of the bond will be closer to the atom of greater electronegativity than the atom of lesser electronegativity thereby creating a dipole in the molecule.
Let us consider each of the compounds;
For Cl-F, the highlighted bond is polar and F is the more electronegative atom
For H-Br, the highlighted bond is polar and Br is the more electronegative atom
For N≡N, the highlighted bond is nonpolar since it is a homonuclear diatomic molecule.
Given the following information: SO2(g) + 12 O2(g) = SO3(g) Kp = 2.5E-2 What is the Kp value for the following reaction: 2 SO2(g) + O2(g) = 2 SO3(g)
Answer:
K = 6.25x10⁻⁴
Explanation:
Based on the reaction:
SO₂ + 1/2 O₂ ⇄ SO₃ Kp = 2.5x10⁻²
We can find the Kp of a similar reaction using Hess's law where the sum of 2 reactions a and b produce a K that is:
K = Ka*Kb
The sum of twice the reaction of the problem:
SO₂ + 1/2 O₂ ⇄ SO₃
+ SO₂ + 1/2 O₂ ⇄ SO₃
2SO₂ + O₂ ⇄ 2SO₃
Where K must be:
K = Kp*Kp = Kp²
K = (2.5x10⁻²)²
K = 6.25x10⁻⁴