Answers
Answer:
Second option. 3
Explanation:
In order to balance a equation you need to have the same amount of atoms/moles in both sides.
Na₃PO₄ + _ HCl → 3NaCl + H₃PO₄
In reactant side we have 3 Na and we have the same amount in product side.
We also have 1 P and 4 O in both sides of the equation.
As we have 3 moles of NaCl in product side, this means we have:
NaCl → Na⁺ + Cl⁻
3 moles of Na⁺ and 3 moles of Cl⁻. In conclussion we need 3 moles of Cl⁻ in reactant side.Then, the stoichiometry of HCl must be, 3.
3 moles of HCl means that we have 3 moles of protons (H⁺).
HCl → H⁺ + Cl⁻
If you see the phosphoric acid, we also have 3 moles of protons.
H₃PO₄ → 3H⁺ + PO₄³⁻
Complete balanced equation is:
Na₃PO₄ + 3HCl → 3NaCl + H₃PO₄
Related Questions
If 2.28 g C8H18 reacts with 7.00 g of Oz, predict the mass of CO, that can be produced and
identify the limiting reactant. Explain how you got your answers.
Unbalanced equation: C8H180 + 026) • CO26) + H₂O
Answers
Answer:
O₂ is limiting reactant and 6.17g CO₂ can be produced
Explanation:
Based on the balanced reaction:
C₈H₁₈ + 25/2O₂ → 8CO₂ + 9H₂O
1 mole of C₈H₁₈ reacts with 25/2 moles O₂.
To solve this question we must convert the mass of each reactant to moles and, using the balanced reaction, we can find limiting reactant. With moles of limiting reactant we can find the moles of CO₂ and its mass as follows:
Moles C₈H₁₈ -Molar mass: 114.23g/mol-
2.28g * (1mol / 114.23g) = 0.0200 moles C₈H₁₈
Moles O₂ -Molar mass: 32g/mol-
7.00g * (1mol / 32g) = 0.219 moles O₂
For a complete reaction of 0.0200 moles C₈H₁₈ are needed:
0.0200 moles C₈H₁₈ * (25/2moles O₂ / 1mole C₈H₁₈) = 0.250 moles of O₂ are needed.
As there are just 0.219 moles, O₂ is limiting reactant.
Moles of CO₂ that can be produced:
0.219 moles O₂ * (8moles CO₂ / 25/2moles O₂) = 0.140 moles CO₂
The mass is -Molar mass CO₂: 44.01g/mol-:
0.140 moles CO₂ * (44.01g / mol) =
6.17g CO₂ can be producedWhat color will the
flame turn if we
immerse a steel
wire in a barium
chloride solution and
then heat it? Why does that happen?
Answers
Answer:
Clean a platinum or nichrome (a nickel-chromium alloy) wire by dipping it into concentrated hydrochloric acid and then holding it in a hot Bunsen flame. Repeat this until the wire produces no color in the flame.
What happens as liquid water boils?
A) The molecules are destroyed.
B) The mass of the molecules decreases.
C) The molecules become separated from each other.
D) The molecules break down into hydrogen and oxygen atoms.
Answers
Answer:
C) The molecules become separated from each other.
Explanation:
what are some examples of long term environmental changes???
Answers
Answer: A long-term environmental change is... ice age, deforestation, urbanization, Earth's orbit, Sun's intensity, global Warming, radioactive waste/pollution. Extinction of species could happen to anyone of the food webs in a long term change.
Explanation:
a mieral is ______
a. man-made
b. alive
c. non-living
d. a plant
Answers
Answer:
C
Explanation:
A mineral is a composition of different rocks, therefore it is not alive and non livine. It is also not man made, but natural
What is an example of Chemical energy to thermal energy to electrical current?
Answers
Answer:
Coal is burned at power plant.
Explanation:
the chemical Energy is released as coal changes
have a good day
TVINN
Assertion: Naphthalene,
camphor, iodine, ammonium
chloride are some common
examples of the substances
which undergo sublimation.
Reason: All solids are first
converted to liquids and then
gases on heating.
Both assertion (A) and
Reason (R) are true
and Reason (R) is the
correct explanation of
assertion (A)
Both assertion (A) and
reason (R) are true but
reason (R) is not the
correct explanation of
assertion (A)
w
Assertion (A) is true
but reason (R) is false.
Assertion (A) is false but reason (R)is true.
Answers
Answer:
Assertion (A) is true
but reason (R) is false.
Explanation:
If we look at the assertion closely, it is true that a sublime substance changes from solid to gas without passing through a liquid state. Naphthalene, camphor, iodine and ammonium chloride are some common examples of the substances which undergo sublimation.
However, not all solids first pass through a liquid state before converting to gas. Sublime solids such as those listed above passes directly from solid to gas without passing through a liquid state.
Hence the assertion is true but reason is false.
What can we do to protect our oceans ?
Answers
1. Conserve Water
Use less water so excess runoff and wastewater will not flow into the ocean.
2. Reduce Pollutants
Choose nontoxic chemicals and dispose of herbicides, pesticides, and cleaning products properly.
3. Reduce Waste
Cut down on what you throw away.
Around Town
4. Shop Wisely
Choose sustainable seafood. Buy less plastic and bring a reusable bag.
5. Reduce Vehicle Pollution
Use fuel efficient vehicles, carpool or ride a bike.
6. Use Less Energy
Choose energy efficient light bulbs and don't overset your thermostat.
On the Water
7. Fish Responsibly
Follow "catch and release" practices and keep more fish alive.
8. Practice Safe Boating
Anchor in sandy areas far from coral and sea grasses. Adhere to "no wake" zones.
9. Respect Habitat
Healthy habitat and survival go hand in hand. Treat with care.
10. Anytime, Anywhere
Volunteer
Volunteer for cleanups at the beach and in your community. You can get involved in protecting your watershed too!
Hope this helps
(reporting links) brainly
Amebic dysentery is a disease caused by organisms that live in dirty water. Which is most likely to prevent an epidemic of amebic dysentery?
A. vaccination of the population
B. purification of drinking water
C.public education on the importance of washing hands
D.restriction on travel to places with amebic dysentery
Answers
Answer:
The answer would have to be public education on the importance of washing hands.
Explanation: Washing hands is always one of the best ways to prevent a contagious disease.
What is the pOH of a solution with [OH-] = 1.4 x 10-13?
O A. -13.15
B. 14.00
C. 12.85
D. 13.15
Answers
Answer:
C. 12.85
Explanation:
just did
10OIS
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1
Yusef is doing an experiment to find out how the amount of sunlight affects the growth of a seedling. He has three identical pots
containing grass seeds he planted at the same time. He puts them in windows that receive different amounts of sunlight each day.
Every day. Yusef looks at the pots and records his observations. What is the independent variable in Yusef's experiment?
OA type of soil
OB type of seedling
Ос.
amount of water
OD
amount of sunlight
Reset
Next Question
Answers
Answer:
asdffafAFSAfdsdf
Explanation:
PLEASE ANSWER!! DUE TONIGHT!! 10 POINTS!!
Find the density of a cube (to the nearest tenth) with a side of 4 cm. and a mass of 1235 grams. (You do not need to include units in your answer.)
Answers
Answer:
19.3
Explanation:
V=4^3 a^3, to find volume with sides
p= 1235/64, Mass/ Volume= Density
How many moles of gallium chlorate, Ga(ClO3)3, must react in order to produce 674 kJ of energy according to the following reaction? 2 Ga(ClO3)3 à 2 GaCl3 + 9 O2 DH = - 130.4 kJ
Answers
Answer:
10.3 mol Ga(ClO₃)₃
Explanation:
Let's consider the following balanced thermochemical equation.
2 Ga(ClO₃)₃(s) ⇒ 2 GaCl₃(s) + 9 O₂(s) ΔH = - 130.4 kJ
According to the balanced thermochemical equation, 130.4 kJ of heat are released when 2 moles of gallium chlorate react. The number of moles of gallium chlorate that must react to produce 674 kJ of energy is:
674 kJ × 2 mol Ga(ClO₃)₃/130.4 kJ = 10.3 mol Ga(ClO₃)₃
Thermochemical equations are chemically balanced equations that take into account both the energy change and the physical states of all reactants and products. Energy is a reactant in an endothermic process, whereas it is a product in an exothermic reaction. Here the moles of Ga(ClO₃)₃ is 10.3 mol.
Let's consider the following balanced thermochemical equation.
2Ga(ClO₃)₃(s) ⇒ 2GaCl₃(s) + 9O₂(s) ΔH = - 130.4 kJ
According to the balanced thermochemical equation, 130.4 kJ of heat is released when 2 moles of gallium chlorate react. The number of moles of gallium chlorate that must react to produce 674 kJ of energy is:
674 kJ × 2 mol Ga(ClO₃)₃ / 130.4 kJ = 10.3 mol Ga(ClO₃)₃
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Hey guys, about to submit my draft for business and chemistry.
What are some things I can do to spice it up and make it better (little adjustments) that can have a big impact when the teacher is reading it?
Answers
Answer:
so u can put on hot sauce to spice it up
and give it to ur teacher
It's fruitfull to add some more information and some acquired knowledge...
Hope it is helpful !
subtracting atomic number from atomic mass will give the number of
Answers
Answer:
:)
Explanation:
If we subtract the atomic number from the atomic mass: atomic mass - atomic number = number of protons + number of neutrons - number of protons. Thus we get the number of neutrons present in an atom when we subtract the atomic number from the atomic mass.
What will the change in temperature be when 90 J are applied to 15 g of gold. (cgold = 0.126 J/g°C)
Answers
Answer:
47.6°C is the change of temperature
Explanation:
To solve this question we must use the equation of specific heat of a material:
Q = m*ΔT*S
Where Q is heat applied = 90J
m is the mass of the substance = 15g gold
ΔT is change in temperature = Our incognite
S is specific heat of the material = 0.126J/g°C for gold
Replacing:
90J = 15g*ΔT*0.126J/g°C
90J/15g*0.126J/g°C = ΔT
ΔT = 47.6°C is the change of temperature
The greenhouse gas released into the atmosphere as a result of livestock digesting their food is called carbon dioxide
True
False
Answers
Answer:
False
Explanation:
Cows and other livestock release methane, which is a gas like Carbon Dioxide, but not the same thing, even though it does contribute into Carbon Dioxide.
Both Arrhenius and Bronsted-Lowry defintions of an acid are similar. According to both of these definitions, an acid is a compound that -
donates a pair of electrons
contains a nonmetal anion
donates a hydrogen ion
should be labeled as corrosive
Answers
Answer:Donates a hydrogen ion
Explanation:
Describe how nucleic acid basis pair up
Answers
The rules of base pairing (or nucleotide pairing) are: A with T: the purine adenine (A) always pairs with the pyrimidine thymine (T) C with G: the pyrimidine cytosine (C) always pairs with the purine guanine (G)
The nucleotides in a base pair are complementary which means their shape allows them to bond together with hydrogen bonds. The A-T pair forms two hydrogen bonds. The C-G pair forms three. The hydrogen bonding between complementary bases holds the two strands of DNA together.
How does genetic variation make a community more stable? Include explanations of how genetic variation is related to the struggle to survive, differential reproductive success, heredity, natural selection, and evolution
Answers
Answer:
If you have genetic variation then a community is more likely to survive because the population is more likely to have individuals who are fine if there are environmental changes. Then natural selection will happen and the species will evolve to he adapted to the new environment. If everyone in a population has the same genetics, than one thing could take them all out.
help plz Question 8(Multiple Choice Worth 2 points)
(01.05 LC)
Which states of matter have the same volume when moved?
Gases and liquids
Gases and solids
Liquids and solids
Solids, liquids, and gases
Answers
Explanation:
(Gases and liquids )
is the answer
Gases and liquids are the states of matter that have the same volume when moved.
Hope it helps you
Kinetic energy is a measure of a particles what?
A: Size
B: Motion
C:Color
D:Weight
Answers
If a book has a weight of 23.2 N on Earth, what is its mass?
Answers
Answer: Mass is 2,37 kg
Explanation: Weight G = mg, and g = 9.81 m/s² on Earth.
m = W/g = 23.2 N / 9.81 m/s²
Scientist introducing a gene to the DNA of these fish that cause the fish to glow an example of which application of biotechnology?
A. Artificial selection
B. Genetic Engineering
C. cloning
D. Artificial intelligence
Answers
Answer:
The correct answer is B
Explanation:
Genetic engineering is an example of which application of because the genes are changed to get the desired features in an organism.
What is genetic engineering?Genetic engineering is the process in which we alter the genetic makeup of an organism to produce desired characterictics in that organism.
So we can conclude that Genetic engineering is an example of which application of because the genes are changed to get the desired features in an organism.
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Select the correct structure that
corresponds to the name.
4-bromo-5-chlorocyclohexene
Answers
Answer: a
Explanation:
Which describes the greatest difference between gases and solids?
A. Solids feel softer than gases.
B. Gases are darker colors than solids.
c. Solids have stronger odors than gases.
D. Gases usually weigh less than solids.
Answers
Answer:
D)Gases usually weigh less than solids.
Answer:
D) Gases usually weigh less than solids
Explanation:
Gases don't have weight and solids do which automatically makes gases lighter because they don't have a mass like a solid.
If the temperature and amount of gas stays constant, what will happen to the pressure of a gas if the volume of the container decreases?
Answers
Please help im testing and need an answer as soon as possible
Kaya collects the data shown in the table.
A 2-column table with 3 rows. The first column labeled Quantity has entries Voltage, Current, Resistance. The second column labeled Value has entries 6.0 volts, 0.3 Amperes, empty.
What is the resistance in the circuit?
0.05
1.8
5.7
20
Answers
Answer:
20
Explanation:
not sure please correct me if im wrong
Answer:
20
Explanation:
Got it right on time 4 learning
Answer is D
Relatively slow rates of chemical reaction are associated with which characteristic?
A)
High temperature
B)
Low activation energy
C).
The presence of a catalyst
D)
Strong bonds in reactant molecules
Answers
Option D : Strong bonds in reactant molecules
The strong bonds in reactant molecules sometimes needs extra energy to weaken the bond and proceed the reaction. Hence, option D is correct.
What is reaction rate ?The rate of a reaction is the rate of decrease in concentration of the reactants or decrease in concentration of the reactants or increase in the concentration of the products.
The minimum energy required to overcome the barrier potential of a reaction is called its activation energy. Hence, lower the activation energy higher will be the reaction rate.
High temperature and presence of catalyst also leads to higher rate. Strong bonds in reactants needs higher energy to weaken the intermolecular force. Thus, slower the reaction rate.
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1.0 moles of an ideal gas are held in a container under 2.0 atm of pressure and 310 K. What must be the volume of this container?
Answers
Answer:
12.7 L (3 s.f.)
Explanation:
Since it is an ideal gas, we can apply the ideal gas law:
[tex]\boxed{pV=nRT}[/tex]
☆ where p= pressure
V= volume
n= number of moles
R= ideal gas constant
T= temperature
Substitute all the given information into the formula:
2V= 1(0.08206)(310)
2V= 25.4386
V= 25.4386 ÷2
V= 12.7 L (3 s.f.)
Further explanation:
The ideal gas constant, R, has different values depending on what units are being used. Two examples are listed below:
[tex]• \: 0.08206 \: L \: atm ^{ - 1} \: mol \: K[/tex]
[tex]• \: 8.314 \: J \: {mol}^{ - 1} \: {K}^{ - 1} [/tex]
In the above question, we use the value 0.08206 because the pressure was given in atm and the temperature was given in Kelvin. Thus, the unit used for volume is L.
Answer: 12.7 L
Explanation:
P=2.0atm
V= ???
n=1.0 mol
R= 0.0821
T= 310K
PV=nRT--> (2)V=(1)(0.0821)(310)
V=12.7 L