Answer:
The equilibrium shifts to the left, and the concentration of Ba2+(aq) decreases
Explanation:
Whenever a solution of an ionic substance comes into contact with another ionic compound with which it shares a common ion, the solubility of the ionic substance in solution decreases significantly.
In this case, both BaSO4 and Na2SO4 both possess the SO4^2- anion. Hence SO4^2- anion is the common ion. Given the equilibrium;
BaSO4(s) <—> Ba2+ (aq) + SO4 2- (aq), addition of Na2SO4 will decrease the solubility of BaSO4 due to the presence of a common SO4^2- anion compared to pure water.
This implies that the equilibrium will shift to the left, (more undissoctiated BaSO4) hence decreasing the Ba^2+(aq) concentration.
1) The equilibrium shifts to the left, and the concentration of [tex]Ba^{2+}[/tex](aq) decreases
Conditions for equilibrium:Whenever a solution of an ionic substance comes into contact with another ionic compound with which it shares a common ion, the solubility of the ionic substance in the solution decreases significantly.
In this case, both BaSO₄ and Na₂SO₄ both possess the [tex]SO_4^{2-}[/tex] anion. Hence [tex]SO_4^{2-}[/tex] anion is the common ion.
Given the equilibrium;
[tex]BaSO_4(s) < = > Ba^{2+} (aq) + SO_4^{2-} (aq)[/tex],
The addition of Na₂SO₄ will decrease the solubility of BaSO₄ due to the presence of a common [tex]SO_4^{2-}[/tex] anion compared to pure water.
This implies that the equilibrium will shift to the left, (more undissociated BaSO₄ ) hence decreasing the [tex]Ba^{2+}[/tex]aq) concentration.
Find more information about Equilibrium here:
brainly.com/question/19340344
How many grams of H2 can be produced from the reaction of 11.50 g of sodium with an excess of water? The equation for the reaction is 2 Na + 2 H2O -> 2 NaOH + H2 Ans: 0.504 2 g H2 I would like to know how to solve this problem, the teacher gave me the answer but I am unsure how to solve it thanks!
Answer:
[tex]m_{H_2}=0.504gH_2[/tex]
Explanation:
Hello,
In this case, since the reaction is:
[tex]2 Na + 2 H_2O \rightarrow 2 NaOH + H_2[/tex]
We notice that since there is an excess of water, we can directly compute the yielded grams of hydrogen by using the following stoichiometric procedure, considering the 2:1 molar ratio between sodium and hydrogen (notice the 2 before the sodium and the 1 before the hydrogen at the chemical reaction) and that gaseous hydrogen has a molar mass of 2 g/mol:
[tex]m_{H_2}=11.50gNa*\frac{1molNa}{22.98gNa} *\frac{1molH_2}{2.02molNa} *\frac{2gH_2}{1molH_2} \\\\m_{H_2}=0.504gH_2[/tex]
Best regards.
Answer:
0.503g of H₂ are produced
Explanation:
Based on the chemical reaction:
2 Na + 2 H₂O → 2 NaOH + H₂
2 moles of Na react with 2 moles of water to produce 2 moles of NaOH and 1 mole of H₂
11.50g of Na -limiting reactant, molar mass 22.99g/mol- are:
11.50g× (1mol / 22.99g) = 0.500 moles of Na.
As 2 moles of Na produce 1 mole of H₂:
0.500 moles of Na × (1 mole H₂ / 2 moles Na) = 0.250 moles of H₂
As molar mass of H₂ is 2.01g/mol:
0.250 moles of H₂ × (2.01g / 1mol) = 0.503g of H₂ are produced
Which of these pairs would form an ionic bond?
Answer:
Ionic bonds form between nonmetals and metals. So just choose the one with a nonmetal element (like Na) and a metal element (like Cl)
Answer:
A
Explanation: K and Br
Unlike an acid, an aqueous solution of a base A) causes some indicators to change color B) conducts electricity C) contains more H+ ions than OH– ions D) contains more OH– ions than H+ ions
Answer:
D) contains more OH– ions than H+ ions
Explanation:
Bases have high concentration of hydroxides (OH-) and acids have high concentration of (H+) ions
Like an acid the aqueous solution of a base should be option D) contains more OH– ions than H+ ions.
What is aqueous solution of a base?An aqueous solution refers to the solvent when it should be dissolved in the liquid water. It is considered to be the solute ions or the dissolved ions also the molecules should be surrounded by the water molecules and it should be incorporated when the network of the bond should lies within the water.
Also, the base contains high concentration of hydroxides (OH-) and acids have high concentration of (H+) ions
Hence, the option d is correct.
Learn more about acid here: https://brainly.com/question/15319322
5.00 moles of oxygen gas and 2.00 moles of carbon dioxide are mixed in
an evacuated jar of volume 4.00 liters and temperature of 200 K.What is
the partial pressure of carbon dioxide (R = 0.0821 L'atm/mol K) Assume no
reaction occurs between oxygen and carbon dioxide. *
A) 2.45 atm
B) 2.98 atm
C) 5.33 atm
D) 8.21 atm
A helium balloon contains 69.5 L of helium at sea level, where the atmosphere pressure is 101.3 kPa. The balloon is released frim a 4500 m mountaintop where the pressure is 61.7 kPa. What is the volume of the balloon when it takes off from the mountaintop
Answer:
THE NEW VOLUME WHEN THE BALLOON TAKES OFF FROM THE MOUNTAINTOP IS 114.1 L
Explanation:
The question follows Boyle's law of gas laws and it involves pressure and volume being inversely proportional to the volume. As pressure increases, the volume decreases and vice versa.
Mathematically represented as:
P1V1 = P2 V2
P1 = 101.3 kPa = 101.3 * 10^3 Pa
V1 = 69.5 L
P2 = 61.7 kPa = 61.7 * 10^3 Pa
V2 = ?
making V2 the subject of the formula. we have;
V2 = P1 V1 / P2
V2 = 101.3 *10^3 * 69.5 / 61.7 *10^3
V2 = 7040.35 / 61.7
V2 = 114.106 L
The volume at a decreased pressure of 61.7 kPa at the mountaintop is 114.1 L
This is in line with Boyle's law which shows that at high pressure, volume decreases and at low pressure, volume increases.
Answer:
The new volume is 114.1 L
Explanation:
Step 1: Data given
Volume of the helium balloon = 69.5 L
The atmosphere pressure is 101.3 kPa
The pressure decreases to 61.7 kPa
Step 2: Calculate the new volume
P1*V1 = P2*V2
⇒with P1 = the atmosphere pressure is 101.3 kPa
⇒with V1 = the initial volume = of the helium balloon = 69.5 L
⇒with P2 = the decreased pressure = 61.7 kPa
⇒with V2 = the new volume = TO BE DETERMINED
101.3 kPa * 69.5 L = 61.7 kPa * V2
V2 = (101.3 kPA * 69.5 L ) / 61.7 kPa
V2 = 114.1 L
The new volume is 114.1 L
URGENT WHOEVER ANSWER CORRECT GETS BRAINLIEST ANSWER!!!!!! use the information in the table to calculate the ages of the meteorites. The half-life of potassium-40 is 1.3 billion years. Meteorite Initial Amount (g) Final Amount (g) 1 30 7.5 2 80 5 3 100 12.5 Use your calculations to answer the questions. How old is meteorite 1? How old is meteorite 2? How old is meteorite 3?
Answer:
1: 2.6billion
2: 5.2billion
3: 3.9billion
Explanation:
Edge 2021
Answer:
1 2.6billion
2 5.2billion
3 3.9billion
The metabolic oxidation of glucose, C6H12O6, in our bodies produces CO2, which is expelled from our lungs as a gas.
C6H12O6(aq) + 6 O2(g) → 6 CO2(g) + 6 H2O(l)
Calculate the volume of dry CO2 produced at body temperature (37°C) and 0.960 atm when 24.5 g of glucose is consumed in this reaction.
Answer:
[tex]\large \boxed{\text{21.6 L}}[/tex]
Explanation:
We must do the conversions
mass of C₆H₁₂O₆ ⟶ moles of C₆H₁₂O₆ ⟶ moles of CO₂ ⟶ volume of CO₂
We will need a chemical equation with masses and molar masses, so, let's gather all the information in one place.
Mᵣ: 180.16
C₆H₁₂O₆ + 6O₂ ⟶ 6CO₂ + 6H₂O
m/g: 24.5
(a) Moles of C₆H₁₂O₆
[tex]\text{Moles of C$_{6}$H$_{12}$O}_{6} = \text{24.5 g C$_{6}$H$_{12}$O}_{6}\times \dfrac{\text{1 mol C$_{6}$H$_{12}$O}_{6}}{\text{180.16 g C$_{6}$H$_{12}$O}_{6}}\\\\= \text{0.1360 mol C$_{6}$H$_{12}$O}_{6}[/tex]
(b) Moles of CO₂
[tex]\text{Moles of CO}_{2} =\text{0.1360 mol C$_{6}$H$_{12}$O}_{6} \times \dfrac{\text{6 mol CO}_{2}}{\text{1 mol C$_{6}$H$_{12}$O}_{6}} = \text{0.8159 mol CO}_{2}[/tex]
(c) Volume of CO₂
We can use the Ideal Gas Law.
pV = nRT
Data:
p = 0.960 atm
n = 0.8159 mol
T = 37 °C
(i) Convert the temperature to kelvins
T = (37 + 273.15) K= 310.15 K
(ii) Calculate the volume
[tex]\begin{array}{rcl}pV &=& nRT\\\text{0.960 atm} \times V & = & \text{0.8159 mol} \times \text{0.082 06 L}\cdot\text{atm}\cdot\text{K}^{-1}\text{mol}^{-1} \times \text{310.15 K}\\0.960V & = & \text{20.77 L}\\V & = & \textbf{21.6 L} \\\end{array}\\\text{The volume of carbon dioxide is $\large \boxed{\textbf{21.6 L}}$}[/tex]
5. How is a cell wall different from a cell membrane?
what is the atomic number of nickel
Answer:
28
Explanation:
If 15 g of CzHo reacts with 60.0 g of Oz, how many moles of water (H2O)
will be produced? (Hint: use what you know about limiting reactant) *
2 C2H6 + 7 O2 + 4 CO2 + 6 H2O
O 1.5 mol H20
O
1.6 mol H20
O
1.0 mol H20
O
1.1 mol H20
Answer:
1.5 mol H2O
Explanation:
Limiting reactant was C2H6 - 0.5 moles
Fomula became .5C2H6 + 1.75O2 = 1CO2 + 1.5H2O
Lactic acid results from which of the following?
Explanation:
Lactic acid is formed during the breakdown of glucose. This is sometimes called "blood sugar."
Which term describes this reaction?
A- addition
B- condensation
C- elimination
D- substitution
Answer:
C.
Explanation:
This is a reaction of elimination, because the water was removed and because of it double bond is formed.
How many moles of H2 are needed to produce 18 moles NH3 in the reaction below?
N2 + 3 H2 —> 2 NH3
Answer:
27 moles of H₂
Explanation:
Equation of reaction:
N₂ + 3H₂ → 2NH₃
From the equation of reaction,
3 moles of H₂ is required to produce 2 moles of NH₃
3 moles H₂ = 2 moles of NH₃
X moles of H₂ = 18 moles of NH₃
X = (3 * 18) / 2
X = 27 moles of H₂
27 moles of H₂ is required to produce 18 moles of NH₃
How many times more acidic is a pH of 2 than a PH of 7?
Answer: 10 times more
Explanation:
How to find the valency of iron
2.03
Which landform is created by flowing water
A.cirques
B.gullies
C.horns
D.dunes
Answer:
Gully
Explanation:
Balance equation: _NO + _H2O = _NH3 + _O2
Answer:
4NO + 6H2O = 4NH3 + 5O2
Explanation:
Think about it this way: there are 4N's 4O's and 12H's and 10O's on both sides that's what makes it balanced
Hope this helps :)
Which statement describes a gas condensing into a liquid?
A.
The atoms in the molecules get heavier so they move less.
B.
The molecules break into smaller pieces that take up less space.
C.
The molecules stick together to make bigger molecules.
D.
The molecules get closer together and move more slowly.
Answer: molecules get closer
Explanation:
Condensation is the process in which molecules of a gas slow down, come together, and form a liquid. When gas molecules transfer their energy to something cooler, they slow down and their attractions cause them to bond to become a liquid
hope this helps
pls mark me brainliest
Answer:
D. The molecules get closer together and move more slowly.
The chemical formulas for the following-
Copper (II) and Iodine
Potassium and Fluorine
Barium and Fluorine
Lithium and Oxygen
Copper (II) and Sulfur
Silver sulface
Lithium hydroxide
Barium phosphate
Ammonium sulfide
Magnesium fluoride
Sodium Chloride
aluminum phosphide
copper (I) oxide
im so sorry, i need help as soon as possible, this is due like right now and my dad is yelling at me
The combustion of 0.1240 kg of propane in the presence of excess oxygen produces 0.3110 kg of carbon dioxide. What is the limiting reactant?
PLEASE I REALLY NEED HELP!!!!
Answer:
The limiting reactant is the propane gas, C₃H₈ while the percentage yield is 83.77%
Explanation:
Here we have
Propane gas with molecular formula C₃H₈, molar mass = 44.1 g/mol combining with O₂ as follows
C₃H₈ + 5O₂ → 3CO₂ + 4H₂O
Therefore, 1 mole of C₃H₈ combines with 5 moles of O₂ to produce 3 moles CO₂ and 4 moles of H₂O
Mass of propane = 0.1240 kg = 124.0 g
Number of moles of propane = mass of propane/(molar mass of propane)
The number of moles of propane = 124/44.1 = 2.812 moles
The molar mass of CO₂ = 44.01 g/mol
Mass of CO₂ = 0.3110 kg = 311.0 g
Therefore, number of moles of CO₂ = mass of CO₂/(molar mass of CO₂)
The number of moles of CO₂ = 311.0 kg/ 44.01 g/mol = 7.067 moles
Therefore, since 1 mole of propane produces 3 moles of CO₂, 2.812 moles of propane will produce 3 × 2.812 moles or 8.44 moles of CO₂
Therefore;
The limiting reactant is the propane gas, C₃H₈, since the oxygen is in excess
Hence
[tex]The \ percentage \ yield = \frac{Actual \, yield}{Theoretical \, yield} \times 100 = \frac{7.067}{8.44} \times 100 = 83.77 \%[/tex]
The percentage yield = 83.77%.
5) A solution has a pH of 1.5. What is the [H+]? *
0.0316
0.0679
0.00123
0.000954
Answer:
.0316
Explanation:
The formula is...
H+ = 10^-pH
- Hope that helps! Please let me know if you need further explanation.
The kinetic energy of a pendulum is greatest at the bottom of its swing because the pendulum is A. at its slowest speed. B. at its lowest point. C. at its greatest speed. D. about to swing upward.
Answer:When the pendulum reaches the very bottom of the swing, it is at its lowest point and greatest speed. This means that the pendulum has zero potential energy (with respect to its rest position) and maximum kinetic energy. This pattern continues for the rest of the swings.
Explanation: Hopes this helps make as brainliest
what are the rules for calculating protons
Answer:
Find the element,
Explanation:
Finding the element will tell you how many protons there are. For example, if you are given an atom of oxygen, you can figure out the number of protons by looking it up on a periodic table, which gives you 8.
If an atom is neutral, find the number of electrons. This number will also be the number of protons.
Which of these conclusions is correct about P and Q in the diagram?
P represents the land and Q represents the ocean.
P represents the ocean and Q represents the land.
P represents the land and Q represents the atmosphere.
P represents the atmosphere and Q represents the ocean.
Answer:
P represents the atmosphere and Q represents the ocean.
Explanation:
and
can
The law of conservation of mass states that
neither be
nor
Answer:
The law of conservation of mass states that the quantity of the mass can neither be added to, neither can it be removed. The greater picture's mass will always be the same amount.
HELP CHEM ASAP!!!!!!
Answer:
0.132
Explanation:
is the only part i know
A sample of water is heated from 10.0 degrees Celcius to 15.0 degrees Celcius by the addition of 125 Joules of heat. What is the mass of the water?
Answer:
125 = 5*4.186*m
m = 125 / 5*4.186 = 5.97g of water.
Explanation:
The water is increased by 5 degrees. This means that for every gram of water, it takes 5*4.186 J to increase the temperature by 5 degrees, aka 5*4.186 J/g
hope this help:)
A 0.223 mole sample of gas is held at 33.0 C and 2.00 atm, What's the volume of the gas? R = 0.0821 L atm / mol K answer soon il give brainiest.
Answer:
The volume of the gas is 2.80 L.
Explanation:
An ideal gas is a theoretical gas that is considered to be made up of point particles that move randomly and do not interact with each other. Gases in general are ideal when they are at high temperatures and low pressures.
The Pressure (P) of a gas on the walls of the container that contains it, the Volume (V) it occupies, the Temperature (T) at which it is located and the amount of substance it contains (number of moles, n) are related from the equation known as Equation of State of Ideal Gases:
P*V = n*R*T
where R is the constant of ideal gases.
In this case:
P= 2 atmV= ?n=0.223 molesR= 0.0821 [tex]\frac{L*atm}{mol*K}[/tex]T=33 °C= 306 °K (being O°C= 273°K)Replacing:
2 atm* V= 0.223 moles*0.0821 [tex]\frac{L*atm}{mol*K}[/tex]* 306 K
Solving:
[tex]V=\frac{0.223 moles*0.0821\frac{L*atm}{mol*K} * 306 K}{2 atm} \\[/tex]
V= 2.80 L
The volume of the gas is 2.80 L.
Reduce the following equation to
net ionic equation:
2Na+ + SO42- +Ba2+ + 2Cr → 2Na+2Cr +BaSO4
A. 2Na+ + 2Cl → 2NaCl
B. SO_2- +Ba2+ → BaSO4
C. 2Na+S02- → Na2SO4
ANSWER: B
Explanation:
Answer:
B) SO₄²⁻ (aq) + Ba²⁺ (aq) → BaSO₄ (s)
Explanation:
on edg... good luck!!
What is the Big bang Theory
Answer:
The Big Bang Theory is the leading explanation about how the universe began. At its simplest, it says the universe as we know it started with a small singularity, then inflated over the next 13.8 billion years to the cosmos that we know today.
Explanation:
