Answer:
3 Cu²⁺(aq) + 2 PO₄³⁻(aq) ⇒ Cu₃(PO₄)₂(s)
Explanation:
Let's consider the molecular equation between aqueous copper(II) chloride and aqueous sodium phosphate.
3 CuCl₂(aq) + 2 Na₃PO₄(aq) ⇒ 6 NaCl(aq) + Cu₃(PO₄)₂(s)
The complete ionic equation includes all the ions and insoluble species.
3 Cu²⁺(aq) + 6 Cl⁻(aq) + 6 Na⁺(aq) + 2 PO₄³⁻(aq) ⇒ 6 Na⁺(aq) + 6 Cl⁻(aq) + Cu₃(PO₄)₂(s)
The net ionic equation includes only the ions that participate in the reaction (not spectator ions) and insoluble species.
3 Cu²⁺(aq) + 2 PO₄³⁻(aq) ⇒ Cu₃(PO₄)₂(s)
In a Lewis structure, what do you do with the total number of valence if your ion is
2- charged?
a) Divide the valence number by 2
b) Multiply the valence number by 2
c) Subtract 2 from the valence number
d) Add 2 to the valence number
Answer: add 2 valence electrons
Explanation:
You have to make up for the negative electrons so you add them
When the ion is -2 charged we add 2 electrons to the total number of valence electrons.
Explanation:
Lewis structure is a simplified representation of the bonding of atoms in a molecule.It also represents the number of valence electrons and their distribution in the molecule.This electronic configuration should be of order by which all the octets of atoms in a molecule are complete.In order to draw a lewis structure of a molecule or ion count the valence electrons of all atoms in the ion or molecule.Draw skeletal structure of molecule or ion.Now add valence electrons to the structure with the help of dotsFor ions, if the charge on the ion is negative then add the number of electrons equal to the magnitude of negative charge to the total valence electrons.For ions, if the charge on the ion is positive then subtract the number of electrons equal to the magnitude of positive charge from the total valence electrons.So from this, we can conclude that when the ion is -2 charged we add 2 electrons to the total number of valence electrons.
Learn more about lewis structure here:
brainly.com/question/4144781?referrer=searchResults
brainly.com/question/1968297?referrer=searchResults
What happens when matter changes its form?
Matter either loses or absorbs energy when it changes from one state to another. For example, when matter changes from a liquid to a solid, it loses energy. The opposite happens when matter changes from a solid to a liquid. For a solid to change to a liquid, matter must absorb energy from its surroundings
Predict the products of this reaction: H2 + Cl2 →
Answer:
2HCl is the product of this reaction 2 is added in order to balance the reaction
Which type of rock is most likely to form because of high heat and pressure?
igneous
magma
sediment
O metamorphic
Answer:
metamorphic
Explanation:
igneous is when the magma is cooling down, sedimentary is when the are formed by cementing underground. that is why the answer is metamophic
The rock that is most likely to form because of high heat and pressure is known as metamorphic rock. Thus, the correct option for this question is D.
What is the Rock cycle?The rock cycle may be defined as a type of cycle that involves the continuous process through which rocks are constructed, altered from one form to another, destroyed, and then formed again by the action of numerous external factors.
If a rock is exposed to great heat and extreme pressure, it undergoes metamorphism. Due to this, the rock does not melt all the way but it changes to a metamorphic rock that may significantly possess new mineral composition and texture.
Metamorphic rocks are rocks that have been altered from their original structure and properties to another due to immense heat and pressure effects.
Therefore, the rock that is most likely to form because of high heat and pressure is known as metamorphic rock. Thus, the correct option for this question is D.
To learn more about Metamorphic rocks, refer to the link:
https://brainly.com/question/398139
#SPJ6
I would like some help with this asap
Answer:
sorry i coudnt help
Explanation:
If 11.9 kJ are used to heat a sample of water the temperature increases from 20.0°C to
650°C. Calculate the mass of the water
general formula
Answer:
[tex]m=4.51g[/tex]
Explanation:
Hello!
In this case, since the energy involved during a heating process is shown below:
[tex]Q=mCp\Delta T[/tex]
Whereas the specific heat of water is 4.184 J/(g°C), we can compute the heated mass of water by the addition of 11.9 kJ (11900 J) of heat as shown below:
[tex]m=\frac{Q}{Cp\Delta T}[/tex]
Thus, by plugging in, we obtain:
[tex]m=\frac{11900J}{4.184\frac{J}{g\°C}(650\°C-20.0\°C)}\\\\m=4.51g[/tex]
Best regards!
Approximately what mass of CuSO4*5H20 (250 g mol^-1) is required to prepare 250 mL of 0.10 M copper(ll)
sulfate solution?
A) 4.0 g
B
6.2 g
С
34 g
D
85 g
E
140 g
Mass of CuSO₄.5H₂0 = 6.25 g (B)
Further explanationMW CuSO₄.5H₂0 =250 g/ mol
mol of CuSO₄
[tex]\tt 0.25\times 0.1=0.025[/tex]
mass of CuSO₄ (MW=159.61 g/mol)
[tex]\tt 0.025\times 159.61=3.99~g[/tex]
[tex]\tt mass~CuSO_4=\dfrac{159.61}{250}\times mass~CuSO_4.5H_2O\\\\mass~CuSO_4.5H_2O=\dfrac{3.99\times 250}{159.61}=6.25~g[/tex]
Sugar solution and steel are both mixtures. Which statement correctly compares them?
A) Both sugar solution and steel are separable mixtures.
B) Both sugar solution and steel are inseparable mixtures.
C) Sugar solution is a separable mixture but steel is an inseparable mixture.
D) Sugar solution is an inseparable mixture but steel is a separable mixture.
Answer:
C) Sugar solution is a separable mixture but steel is an inseparable mixture.
Explanation:
Sugar can be put in water then have the water dried out and there will be sugar. Metal how ever can not be a separable mixture without making it into a liquid.
There is a golden role of solubility, polar solute dissolve in polar solvent and non polar solute dissolve in non polar solvent. Therefore, the correct option is option C.
What is solution?Solutions are a homogeneous mixture of two or more substances. A solution is a homogeneous mixture of solvent and solute molecules.
Solvent is a substance that is in large amount in solution. solute is the substance which is in small amount in a solution. Sugar solution is a separable mixture but steel is an inseparable mixture. Sugar can be separated by heating the solution . Water will evaporate and sugar will be left. Steel can not be separated by any means.
Therefore, the correct option is option C that is Sugar solution is a separable mixture but steel is an inseparable mixture.
To know more about solution, here:
https://brainly.com/question/13812915
#SPJ2
2 which amoung
the following measurements
the highest number of significant
containsFiqures
a) 1.23x10^-3 kg b) 1.2x10^-3 kg c)0.123×10^3kg
d) 2x 10^5 kg
what is the amount of heat energy released when 50.0 grams of water is cooled from 20.0 degrees Celcius
Answer:
q = mC∆T
q = (50 g)(4.184 J/g/deg)(10 deg)
q = 2092 J = 2.09x10^3 J
That's how it's done.
Explanation:
Hope this helps! sorry If i didn't simplify enough..
Weathering affect rock formations by .......
HELP MEEE
The pH of a saturated solution of a metal hydroxide MOH is 10.15. Calculate the Ksp for this compound.
Answer:
[tex]Ksp=2.00x10^{-8}[/tex]
Explanation:
Hello!
In this case, since the pH of the given metal is 10.15, we can compute the pOH as shown below:
[tex]pOH=14-pH=14-10.15=3.85[/tex]
Now, we compute the concentration of hydroxyl ions in solution:
[tex][OH^-]=10^{-pOH}=10^{-3.95}=1.41x10^{-4}M[/tex]
Now, since this hydroxide has the form MOH, we infer the concentration of OH- equals the concentration of M^+ at equilibrium, assuming the following ionization reaction:
[tex]MOH(s)\rightarrow M^+(aq)+OH^-(aq)[/tex]
Whose equilibrium expression is:
[tex]Ksp=[M^+][OH^-][/tex]
Therefore, the Ksp for the saturated solution turns out:
[tex]Ksp=1.41x10^{-4}*1.41x10^{-4}\\\\Ksp=2.00x10^{-8}[/tex]
Best regards!
5Fe2 2Mn2 8H2O2MnO4- 5Fe 16H In the above reaction, the oxidation state of iron changes from to . How many electrons are transferred in the reaction?
Answer:
The oxidation number of iron changes from 2+ to 0.
10 electrons are transferred in the reaction.
Explanation:
Step 1: Write the balanced redox reaction
5 Fe²⁺ + 2 Mn²⁺ + 8 H₂O ⇒ 2 MnO₄⁻ + 5 Fe + 16 H⁺
Step 2: identify both half-reactions
Reduction: 5 Fe²⁺ + 10 e⁻ ⇒ 5 Fe
Oxidation: 2 Mn²⁺ + 8 H₂O ⇒ 2 MnO₄⁻ + 16 H⁺ + 10 e⁻
Step 3: Identify the oxidation state change of iron
Iron changes from Fe²⁺ to Fe, that is, the oxidation number changes from 2+ to 0.
Step 4: Determine how many electrons are transferred in the reaction?
According to both balanced half-reactions, 10 electrons are transferred in the reaction.
How many molecules of NH3 are in 45 mol of NH3 ?
Answer:
Explanation:
5
a. What is a period on the periodic table?
Answer:
In chemical bonding: Arrangement of the elements. The horizontal rows of the periodic table are called periods. Each period corresponds to the successive occupation of the orbitals in a valence shell of the atom, with the long periods corresponding to the occupation of the orbitals of a d subshell.
Explanation:
help plz now asap this is timed
how does skeletal and circulatory system work together
Answer:Your circulatory system delivers oxygen-rich blood to your bones. Meanwhile, your bones are busy making new blood cells. Working together, these systems maintain internal stability and balance, otherwise known as homeostasis
Explanation:
Answer the 3 thanks!
Is speed almost never constant
depends on the situation, but scientifically, Einstein's theory of special relativity sets the speed of light, 186,000 miles per second (300 million meters per second). But some scientists are exploring the possibility that this cosmic speed limit changes. The speed of light is constant, or so textbooks say. (google)
Silver is an element that can conduct electricity and heat and is shiny. Silver is most
likely
Answer:
a metal
Explanation:
metals are good conductors of electricity
Silver shows electrical and thermal conductivity and shows luster. These properties are feature of a metal and thus silver is most likely a metal.
What is silver?Silver is 69th element in the periodic table and is included in the transition metals. It is a d-block element with the symbol Ag came from the Latin name argentum.
Silver is a common component in electronic devices since it is the most conducting metal . Thermal conductivity and shining property are other features of silver. Due to its shining silver is used to make ornaments.
The highly conducting and shining materials are termed as metals therefore, silver is a metal.
To learn more about silver, refer the link below:
https://brainly.com/question/6434391
#SPJ5
PES uses which type of electromagnetic radiation?
A. Ultraviolet and X-rays
B. Infrared
C. Ultraviolet and visible
D. Radio
Answer:
the answer should be A if im correct
Explanation:
Calculate the mass, in grams, of Ag2CrO4 that will precipitate when 50.0mL of 0.20M AgNO3 solution is mixed with 40.0mL of 0.10M K2CrO4 solution. Assume that Ag2CrO4 is completely insoluble (its Ksp is ~ 0).
Answer:
1.327 g Ag₂CrO₄
Explanation:
The reaction that takes place is:
2AgNO₃(aq) + K₂CrO₄(aq) → Ag₂CrO₄(s) + 2KNO₃(aq)First we need to identify the limiting reactant:
We have:
0.20 M * 50.0 mL = 10 mmol of AgNO₃0.10 M * 40.0 mL = 4 mmol of K₂CrO₄If 4 mmol of K₂CrO₄ were to react completely, it would require (4*2) 8 mmol of AgNO₃. There's more than 8 mmol of AgNO₃ so AgNO₃ is the excess reactant. That makes K₂CrO₄ the limiting reactant.
Now we calculate the mass of Ag₂CrO₄ formed, using the limiting reactant:
4 mmol K₂CrO₄ * [tex]\frac{1mmolAg_2CrO_4}{1mmolK_2CrO_4} *\frac{331.73mg}{1mmolAg_2CrO_4}[/tex] = 1326.92 mg Ag₂CrO₄1326.92 mg / 1000 = 1.327 g Ag₂CrO₄Please help me people it’s due today at 6:00pm please help me please please
Explanation:
gravity if it's incorrect sorry
Answer:
ya it's true
Explanation:
its gravity it is true it's right
What should you do if your hypothesis is incorrect ?
Answer:
come to a conclusion
Explanation:
C is the midpoint of BD
Answer:
1. Definition of Midpoint
2.Angle BCA is congruent to angle DCA
Identify the change in state that does not have an increase in entropy. a. Water evaporating b. Dry ice subliming c. Water boiling d. Ice melting e. Water freezing
Answer:
E. Water Freezing
Explanation:
Entropy refers to the degree of disorderliness of a system.
A. Water Evaporating: There is an increase in entropy, this is because the phase change is from liquid to gas. Gas particles are more disordered than liquid.
B. Dry Ice sublimating: Sublimating refers to a phase change from solid to gas. This is an increase in entropy, this is because the gas particles are more disordered than solid particles
C. Water Boiling: The phase change is from liquid to gaseous state. There is an increase in entropy. Gas particles are more disordered than liquid.
D. Ice melting: The phase change is from solid to liquid state. There is an increase in entropy. Liquid particles are more disordered than that of solid.
E. Water Freezing: The phase change is from liquid to solid state. There is a decrease in entropy. solid particles are less disordered than those of liquid.
If 8.50 L of natural gas, which is essentially methane (CH4), undergoes complete combustion at 730 mm Hg and 20 degrees C, how many grams of each product are formed?
Grams of CO2=______
Grams of H2O=______
mass CO₂ : 14.96 g
mass H₂O : 12.24 g
Further explanationReaction
CH₄+2O₂⇒CO₂+2H₂O
mol CH₄V=8.5 L
P=730 mmHg=0,961 atm
T=20+273=293 K
[tex]\tt n=\dfrac{PV}{RT}=\dfrac{0.961\times 8.5}{0.082\times 293}=0.34[/tex]
mass CO₂(MW=44 g/mol)mol CO₂= mol CH₄ = 0.34
[tex]\tt 0.34\times 44=14.96~g[/tex]
mass H₂O (MW=18 g/mol)mol H₂O= 2 x mol CH₄ = 2 x 0.34 = 0.68
[tex]\tt 0.68\times 18=12.24~g[/tex]
How many atoms does h20 have and how many elements does h20 have?
Answer:
h20 has 3 atoms
Explanation:
2 hydrogen atoms and 1 oxygen atom
What is the main difference between a proton and a neutron?
Select one:
a. Size is the main difference
b. Charge is the main difference
c. Location in the atom in the main difference
d. Radioactivity is the main difference
Answer:
b. Charge is the main difference
Explanation:
This is a theory question which you just need to understand and remember the concepts.
Protons and neutrons are relatively the same sizes.
The charges here are defined, protons are positively charged and neutrons have no charge (electrically neutral).
Both are located in the nucleus of an atom.
Proton radiation rarely occurs and neutron radiation is a form of ionizing radiation in cases typically of nuclear fission or nuclear fusion.
The most likely answer is that the charge is the main difference. This is also a basic concept so this would be the answer.
Explain how this change will impact the transfer of thermal energy in the solar cooker design and describe one possible design improvement the students can make to compensate for this change
Answer:it conduct thermal conductivity because of the heat it holds
Explanation:
When energy is transformed from one form to another, the appliance could be redesigned in such a way that this transfer is minimized.
Transfer of thermal energyWe know from the principle of transfer of energy that energy can neither be created nor destroyed but is transformed from one form to another. The image is not shown here but I will try to explain what energy transfer is.
Usually, when energy is transformed from one form to another, the appliance could be redesigned in such a way that this transfer is minimized.
Learn more about energy transfer:https://brainly.com/question/18649915?
#SPJ2
