In the double displacement reaction between BaCl₂ and Na₃PO₄, 52.4 g of BaCl₂ are required to produce 50.5 g of Ba₃(PO₄)₂.
What is stoichiometry?Stoichiometry refers to the relationship between the quantities of reactants and products before, during, and following chemical reactions.
Step 1: Write the unbalanced equation.BaCl₂(aq) + Na₃PO₄(aq) → Ba₃(PO₄)₂(s) + NaCl(aq)
Step 2: Balance the equation.We will use the trial and error method. We will:
Multiply BaCl₂ by 3 to balance Ba atoms.Multiply Na₃PO₄ by 2 to balance P atoms.Multiply NaCl by 6 to get the balanced equation.3 BaCl₂(aq) + 2 Na₃PO₄(aq) → Ba₃(PO₄)₂(s) + 6 NaCl(aq)
Step 3: Calculate the mass of BaCl₂ required to produce 50.5 g of Ba₃(PO₄)₂.The mass ratio of BaCl₂ to Ba₃(PO₄)₂ is 624.69:601.93.
50.5 g Ba₃(PO₄)₂ × 624.69 g BaCl₂/601.93 g Ba₃(PO₄)₂ = 52.4 g BaCl₂
In the double displacement reaction between BaCl₂ and Na₃PO₄, 52.4 g of BaCl₂ are required to produce 50.5 g of Ba₃(PO₄)₂.
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This particle, an/a ___ has a negative charge
Answer:
Explanation:
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This particle, an/a ___ has a negative charge
The COD of a water sample is found to be 30 mg of O, per liter. What vol- ume of 0.0020 MK,Cr, will be required to titrate a 50-ml sample of the water…
The COD of a water sample is found to be 30 mg of O, per liter. What vol- ume of 0.0020 MK,Cr, will be required to titrate a 50-ml sample of the ains the same throughout the diagram. OC The graph starts at a lower energy value and ends at a higher energy value. Od The potential energy of the products is equal to the potential energy of the reactants.
Energy and Chemical Reactions: Mastery Test 4 Select the correct answer. Which factor is defined as the average kinetic energy of a substance? A. the …mass of the substance B. the volume of the substance C. the pressure of the substance D. the temperature of the substance
2 Select the correct answer. Which is a form of kinetic energy? OA gravitational energy OB. chemical energy OC. electrical energy D. sound energy
23.4 grams of Al2(SO3)3 is yielded through a chemical reaction. How many moles is this?
What is the solubility of NaNO3 at 75C (graphed)
5. Find the molecular formula for a compound with a mass of 40 amu and the empirical formula C2H4.
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Kevin and Lisa get into a deep discussion. Kevin believes adding HOT WATER to a test tube that has baking soda will cause the substances to react faster. Lisa, thinks he is wrong and believes that the HOT WATER may cause the substances to not react normally. Based on what you learned from the QUIZZIZZ ACTIVITY, whose side would you take in this argument????
I agree with idea of Kevin because bakong soda dissociates faster in hot water than cold water.
How baking soda reactivity increase in hot water?Baking soda is a chemical that can undergo a decomposition reaction when heated. At 80 degrees Celsius, sodium bicarbonate starts to break down into sodium carbonate (Na2CO3), water (H2O) and carbon dioxide (CO2) which is ready for reaction with other chemical.
So we can conclude that Kevin idea is correct because bakong soda dissociates faster in hot water than cold water.
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The density of chlorine gas at 0.970 atm and 29.8 °C is ________ g/L.
Answer:
d=3.95 g/l
Explanation:
1) Ideal gas equation:
pV = nRT
2) Transform the equation to compute density, d = m / V
n = mass in grams / molar mass = m / MM
pV = (m/MM) RT
=> pV = mRT/MM
=> m/V = pMM / (RT)
d = pMM / (RT)
p = 1.21 atm
MM = 83.80 g/mol (this is the atomic mass of krypton element)
T = 50 + 273.15 K = 323.15K
3) Compute:
d = (1.25 atm * 83.80 g/mol) / (0.0821 atm*liter /K*mol * 323.15K)
Please help me
Phylum ___________ contains organisms that have a cutic|e; a f|exible protective covering.
Answer:
B Nematoda
Explanation:
______ contributes to the nitrogen cycle by removing nitrogen from the air and converting it into a form that is usable by plants.
A. earthworms
B. bacteria
C. fungi
D. plants
Answer:
bacteria
Explanation:
Bacteria removes nitrogen from the air and converts it into a form that is usable by plants.
Answer:
Bacteria
Explanation:
I took the test and got it right
A 30.4ml sample of 2.38 M solution of KCI (molar mass = 74.55 g/mol) is prepared. How many grams of KCI are in the solution?
Do not report units in your answer. Report your answer with two places past the decimal point.
ignore this, it wont let me exit this screen/ tab for some reason..
What are the elements names for C9H8O4
Calculate the molarity of (3.25 mol of LiCl in 2.78 L solution
[tex]\text{Morality}= \dfrac{\text{Number of moles}}{\text{Volume}}=\dfrac{3.25}{2.78}=1.169 ~mol/L[/tex]
What temperature creates hail
Answer:
32 °F
Formation. Hail forms in strong thunderstorm clouds, particularly those with intense updrafts, high liquid water content, great vertical extent, large water droplets, and where a good portion of the cloud layer is below freezing 0 °C (32 °F).
Explanation:
brainlist me and that's all I know and we have the same module I guess
19. For the reaction HCl + NaOH → NaCl + H2O, how many moles of hydrochloric acid are required to
produce 150. g of water?
a. 12.2 mol
b. 4.16 mol
c. 8.32 mol
d. 1.50 mol
Answer:
c, 8.32 mol
Explanation:
the molecular mass of water is about 18.02, to get the moles of water 150/18.02=8.32 mol, since the coefficients of HCl and H2O are the same, the number of moles would be the same as well
Metals can be distinguished by dissolving them in fuel and them burning that fuel. For example, calcium will turn orange and copper will turn green. Is this because of blackbody radiation or atomic transitions that you see in line spectra?
Copper will turn green and calcium will turn orange. this is as a result of the atomic transitions visible in line spectra
What components make up transitions?Transition elements are substances with partially filled d orbitals, sometimes referred to as transition metals. According to IUPAC, a transition element is an element with a partially filled d subshell or one with the capacity to create stable cations that has an unfilled d orbital.
Why are transitional elements called that?As a result of their transitional behavior between s-block or p-block elements, the d-block elements are referred to as transition elements. Their characteristics are intermediate between those of the covalently-bonded, highly reactive s-block metallic elements and those of the p-block elements.
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1. What is the relation between distance and speed?
a) distance= speed x time
b) distances speed / time
c) distance= time / speed
d) None of these
Answer:
option no b is right answer
Answer:
b
Explanation:
How many orbitals are in Phosphorus
How would Bohr model show the protons in a carbon atom
Answer:
The Bohr model show the protons in a carbon atom using the model; "Electrons move in fixed orbits around a nucleus of protons and neutrons."
According to Bohr's model of the atoms, the Rutherford model is basically correct. This implies that Bohr model accepts the idea of a nucleus containing nucleons(protons and neutrons).
In addition, the model also postulates that electrons are found in fixed orbits. These fixed orbits are called energy levels or shells.
A graphic description of this is shown in the image attached to this answer.
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Explanation:
Hellpp I don’t understand this
Answer:
Can you repost this but flip it? It’s upside down rn
Explanation:
What is the definition of spring scale?
You open the refrigerator and take out a slice of leftover pizza. You put it in the microwave oven, turn it on, and watch for the cheese to start bubbling. You take a bite of the pizza and realize it is too hot, so you let it sit on the counter for a minute. When the pizza is finally cool enough to eat, you enjoy your lunch. Identify three examples of energy transfer in the scenario.
Pick up to 3 answers.
A. Electromagnetic (microwave) energy is transferred from the refrigerator to the pizza in the refrigerator.
B. Electromagnetic (microwave) energy is transferred from the microwave to the pizza in the microwave oven.
C. Heat energy is transferred from the pizza to the room as the pizza cools on the counter.
D. Heat energy from the warm pizza is transferred from the pizza into the mouth chewing it.
E. Heat energy from the room is transferred into the pizza as it comes out of the microwave oven.
Answer:
C,B,(D or A)
Explanation:
Spell out the full name of the compound?
The ion with 86 electrons, 142 neutrons, and a 4+ charge
[tex]\qquad\qquad\huge\underline{{\sf Answer}}♨[/tex]
The ion had 4+ charge when it had 86 electrons, so it should have no charge on it if there are 4 more electrons and the atom will be neutral.
And since we know that number of electrons in a neutral atom is equal to Atomic Number of that atom.
So, at neutral phase, it had 86 + 4 = 90 electrons
hence, our required atom is : Thorium
And it's ion will be ~[tex]\sf Th^{4+} [/tex]
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please help and show work will be picking brainliest
Answer:
34x4v
Explanation:
ik it is write
Go why?yes but why but no sense so help but yes by hypothesis
Answer:
follow hypothesis bud
Explanation:
yep
Choose all that apply for neap tides
Moon and sun are at right angles to the earth
Moon, sun, and earth are all in alignment
Smaller than normal range of highs and low tides
Gravity of the sun and moon work against each other
Answer:
1. Moon and sun are at right angles to the earth
2. Smaller than normal range of highs and low tides
3. Gravity of the sun and moon work against each other
Write and balance tin and copper(ii) oxide react to form copper and tin IV oxide
Answer:
tin Is more reactive than copper so it reduces oxygen from copper
Question
How does physical states of a pharmaceutical dosage
form
(Solid,liquid or gas) influence the overall stability and
Storage of the formulated pharmaceutical
product
Answer:
it,s is so many people do you want to go then
you are not study then stage change of it
A galvanic (voltaic) cell consists of an inert platinum electrode in a solution containing 1.0 M tin(IV) ion and 1.0 M tin(II) ion, and another inert platinum electrode in a solution containing 1.0 M cobalt(III) ion and 1.0 M cobalt(II) ion, connected by a salt bridge. Calculate the standard potential for this cell at 25°C. Standard reduction potentials can be found in the standard reduction potentials table.
In the galvanic or voltaic cell, the standard cell potential is 1.67 V. The standard potential is the difference between the reduction potential of cathode and anode.
What is an electrochemical cell?An electrochemical cell produces energy by a sponteanous chemical process. A galvanic or voltaic cell produces energy by a sponteanous chemical reaction.
Hence, given the standard reduction potentials;
Sn4+ + 2e- ==> Sn2+ Eº = 0.15 V (anode)
Co3+ + 2e- ==> Co2+ Eº = 1.82 V (cathode)
Eºcell = 1.82 V - 0.15 V = 1.67 V
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How much heat is required to raise the temperature of 1,500 g of water from 25°C to 52°C? The specific heat of water is 4.184 J/g-oC.
Apply thermodynamics
[tex]\\ \rm\rightarrowtail Q=mc\delta T[/tex]
Q is heat[tex]\\ \rm\rightarrowtail Q=1500(4.184)(27)[/tex]
[tex]\\ \rm\rightarrowtail Q=169452J[/tex]
A sample of 85.5 g of tetraphosphorous decoxide (P4O10) reacts with 74.9 g of water to produce phosphoric acid (H3PO4) according to the following balanced equation.
P4O10+6H2O⟶4H3PO4
Determine the limiting reactant for the reaction.
H2O
H3PO4
P4O10
Calculate the mass of H3PO4 produced in the reaction.
mass of H3PO4:
g
Calculate the percent yield of H3PO4 if 39.2 g of H3PO4 is isolated after carrying out the reaction.
percent yield:
%
The limiting reactant here is P4O10 . The percent yield of the product is caculated as 33.3%.
What is the limiting reactant?The limiting reactant is the reactant that is in a minute quantity.
Number of moles of P4O10 = 85.5 g/284 g/mol = 0.3 moles
Number of moles of H2O = 74.9 g / 18 g/mol = 4.2 moles
From the reaction equation;
1 mole of P4O10 reacts with 6 moles of H2O
x moles of P4O10 reacts with 4.2 moles of H2O
x = 0.7 moles
Hence, P4O10 is the limiting reactant.
1 mole of P4O10 yields 4 moles of H3PO4
0.3 moles of P4O10 yields
0.3 moles * 4/1 = 1.2 moles
Mass of the H3PO4 = 1.2 moles * 98 g/mol = 117.6 g
Percent yield = 39.2 g/117.6 g * 100/1 = 33.3 %
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All of the following are sources of air pollution EXCEPT
-mobile sources
- Factories
-scrubbers
-Landfills
Answer:
Mobile sources
..........................
In this circuit, energy is transferred from a battery to a circuit wire and then to a light bulb, where some of it leaves the system. Starting from the battery, which series shows the correct order of energy transformations taking place in this circuit?
light and heat
chemical
electrical
put them in order
Answer:
chemical electrical light heat
Complete the balanced dissociation equation , help please!
Answer:
Al3Br1 -> Al1Br3
Explanation:
I believe you just swap it but I’m not 100%