A complete ionic equation shows ions formed from each of the species. It also show the charge on each of the ions.It also shows all reactants as compounds or elements. The ions formed and their charges can only be inferred from this equation.
What is a Net Ionic equation ?The net ionic equation shows the chemical species involve in chemical reaction while the complete ionic equation also involve the spectator ions.
What are Spectator ions ?These ions are same in both side of chemical reaction and thus cancels out each other.
Their presence can not effect the equilibrium of reaction that's why these ions are omitted in net ionic equation.
The net ionic equation state that whether precipitation is occur or not.
If the chemical reaction have no net ionic equation it means all are in aqueous from not precipitation occur.
Consider the following example:Balanced Chemical equation:
HClO₂(aq) + NaOH(aq) → H₂O(l) + NaClO₂ (aq)
Ionic equation:
H⁺(aq) + ClO₂⁻(aq) + Na⁺(aq) + OH⁻(aq) → H₂O(l) + Na⁺(aq) + ClO₂⁻ (aq)
Net ionic equation:
H⁺(aq) + OH⁻(aq) → H₂O(l)
The ClO₂⁻(aq) and Na⁺ (aq) are spectator ions that's why these are not written in net ionic equation.
The water can not be splitted into ions because it is present in liquid form.
Hence, The net ionic equation shows the chemical species involve in chemical reaction while the complete ionic equation also involve the spectator ions.
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PLEASE NO FAKE ANSWERS!! Chemistry!!! Please will give brainliest !! Show work
When 1 mole of Zn and 2 mole of O₂ reacts togethor, It will produce 1 mole of ZnO as O₂ is excess reagent and Zn will act as Limiting reagent and thus it limits the amount of product formed.
What is Limiting reagent ?Limiting reagents are the substances that are completely consumed first in a chemical reaction.
Given ;
Amopunt of Zn : 1 moleAmount of O₂ : 2 moleGiven equation ;
2Zn + O₂ --> 2ZnO
As according to given chemical equation,
2 moles Zn of reacts with 1 mole of O₂ to produce 2 moles of ZnO.
Therefore,
1 mole of Zn will require 0.5 mole of O₂.
But,
the given amount of O₂ is 2 mole which is excess
Hence,
Zn here will act as the Limiting reagent, According to which the amount of product formed will be decided.
Therefore,
If 2 mole Zn produces : 2 moles of ZnO (According to given balanced equation)
Thus,
1 mole of Zn will produce = 2/2 x 1
= 1 mole of ZnO
Hence, When 1 mole of Zn and 2 mole of O₂ reacts togethor, It will produce 1 mole of ZnO as O₂ is excess reagent and Zn will act as Limiting reagent and thus it limits the amount of product formed.
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2. A solution is made by dissolving 3.88 g of NaCl in enough water to make 67.8 mL of solution. What is the concentration of sodium chloride in units of weight/volume percent?
The concentration of sodium chloride in the solution is 5.72% (weight/volume percent).
How to calculate the weight/volume percent concentration?Weight/volume percent concentration (w/v) expresses the amount of solute (in grams) dissolved in a given volume of solution (in milliliters). Specifically, it is defined as the weight of the solute divided by the volume of the solution, multiplied by 100.
To calculate the weight/volume percent concentration, we need to determine the mass of NaCl per volume of the solution.
First, we need to convert the volume of the solution from milliliters (mL) to liters (L):
67.8 mL = 0.0678 L
Next, we calculate the concentration of NaCl in grams per liter (g/L):
Concentration = Mass of solute ÷ Volume of solution
Concentration = 3.88 g ÷ 0.0678 L
Concentration = 57.2 g/L
Finally, we convert the concentration to weight/volume percent by multiplying by 100:
Weight/volume percent = Concentration x 100
Weight/volume percent = 57.2 g/L x 100
Weight/volume percent = 5.72%
Therefore, the concentration of NaCl in the solution is 5.72% (weight/volume percent).
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explain how magic numbers are related to nuclear stabilize
Answer:
A magic number is a number of nucleons (either protons or neutrons, individually) that form complete bands within the atomic nucleus. As a result, atomic nuclei with a magic number of protons or neutrons are significantly more persistent than other nuclei.
What is one advantage of wind and hydroelectric power?
A. They are effective in any type of environment.
B. Neither harms wildlife.
C. Neither produces pollutants.
D. Both are inexpensive.
What is one advantage of wind and hydroelectric power?
A. They are effective in any type of environment.
B. Neither harms wildlife.
C. Neither produces pollutants.
D. Both are inexpensive.
Explanation:
one of the qnswer is flood control, irrigation support, and clean drinking water
A scientist places a large beaker containing 325 g of 50degree Celsius water into a microwave. He has to run the microwave for 3 minutes until the water reaches a temperature at 92 degree Celsius. Calculate the amount of energy absorbed by the water.
The amount of energy absorbed by the 325g of water is 57,057J. Details about calorimetry can be found below.
How to calculate energy?The energy absorbed by a mass of substance can be calculated using the following formula;
Q = mc∆T
Where;
Q = quantity of heat absorbedm = mass of substancec = specific heat capacity∆T = change in temperatureQ = 325g × 4.18 × (92 - 50)
Q = 57,057J
Therefore, the amount of energy absorbed by the 325g of water is 57,057J.
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Coffe is a solution of organic substance in water
Answer:
Verdadero!
no se en que mas quieres que te ayude? o cual realmente quieres que sea la respuesta?
Engineers are starting on a new project to develop technology. Which of these
statements does not describe something they might do at the very beginning
of the process?
OA. Look at the problems society is facing.
OB. Make a decision about how to best apply the technology.
C. Look at the benefits and challenges of using specific materials.
OD. Decide whether they have designed the best possible product.
Answer: Decide whether they have designed the best possible product.
CH3CH₂OH + 0₂ → CO₂ + H₂O
CH3 CH₂OH + 30₂ → 2CO₂ + 3H₂O
How would you describe the kinetic energy of the particles in a solid?
Answer:
Solid objects have the least kinetic energy
Explanation:
because solid particles vibrate in place. Gases have the most kinetic energy because their particles move very quickly.
Indicate the number of significant figures in the following measured numbers:
a. 45 = __________
f. 980.00 = __________
b. 450 = __________
g. 740000 = __________
c. 0.0045 = __________
h. 0.00000042 = __________
d. 3006 = __________
i. 4050600 = __________
e. 0.00780 = __________
j. 230.0050 = __________
Answer: a = 2 ; f = 5 ; b = 2 ; g = 2 ; c = 2 ; h = 2 ; d = 4 ; i = 5 ; e = 3 ; j = 7
Explanation: Some rules to follow while calculating sig figs is
1. If a number like 4500 is present, only two sig figs are counted, but none of the zeros are, but if 4500. has a decimal point present, then you should count all the numbers available.
2. If a number like .0005 is present, only count 5 as a sig fig, however if the number is .00050, count the 0 after the 5 in this example (this would then have two sig figs.
Why is there a delay for the tides to react to the Moon's and Sun's gravitational effect?
A. Gravity is one of the slower forces in nature having to travel great distances.
B. The gravitational forces must overcome inertia and friction for the tides to take effect on water.
C. Water is relatively immune to the force of gravity delaying the tidal process.
D. There is no delay because the effects of gravity is constantly acting on bodies of water.
There is no delay because the effects of gravity are constantly acting on bodies of water. Hence, option D is correct.
What is the gravitational effect?Gravitation or just gravity is the force of attraction between any two bodies.
The Moon exerts over twice the gravitational pull of the Sun on Earth's tides because of its proximity to Earth. -The lunar tidal bulges are about twice the size of the solar tidal bulges. -The Sun's contribution to the tides is less than that of the Moon.
When the sun and moon are perfectly unaligned (they form a 90-degree angle relative to the earth), there are still tides because the moon's gravitational gradient is stronger than the sun's. The sun's gravitational gradient never completely cancels out the moon's.
Hence, option D is correct.
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If a snail crawls at a rate of 228.16cm/s, what is its speed in miles per hour?
If a snail crawls at a rate of 228.16cm/s, Its speed in miles per hour will 5.10 miles/hour
What is speed ?
The rate at which someone or something moves or operates or is able to move or operate.
Snail covers distance in 1 seconds = 228.16 cm
It covers in 60 seconds (1 min) = 228.16 cm x 60 = 6mtrs
It covers in 60 minutes (1 hour) = 228.16 cm x 60 x 60 = 821376 cm
Now, lets convert cm to miles :
As, 1 cm = 6.21371 x 10⁻⁶ miles
Thus, 821376 cm = 5.10 miles
hence, If a snail crawls at a rate of 228.16cm/s, Its speed in miles per hour will 5.10 miles/hour
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Which of the following is not a type of covalent bond?
A. Quadruple
B. Double
C. Polar
D. Non-polar
Answer:
Quadruple
Explanation:
Answer:
A
Explanation:
What is the primary purpose of a rate law?
Oto determine if a chemical reaction will be exothermic or endothermic
O to determine the amount of product that is formed from the concentration of reactants
O to show the relationship between the concentration of reactants and the reaction rate
O to show a relationship between the amounts of gas that can dissolve into a liquid
The rate law uses the molar concentrations of reactants to determine the reaction rate. Hence, option (C) is the correct option
What is rate law ?A rate law shows how the rate of a chemical reaction depends on reactant concentration.
For a reaction such as aA → products, the rate law generally has the form
rate = k[A]ⁿ,
where,
k is a proportionality constant called the rate constantn is the order of the reaction with respect to A.Typically, increased concentrations of reactants increases the speed of the reaction, because there are more molecules colliding and reacting with each other.
Hence , The rate law uses the molar concentrations of reactants to determine the reaction rate. Hence, option (C) is the correct option
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how many moles of FeCl3 are produced when 3.0 mole.of Fe react eith excess Cl2 gas?
for the following reaction how many grams of h20 will be produced if you react 3.7 grams of B2H6? B2h6 +3O2-2hbo2+ 2 H20
Answer:
4.8 g H₂O
Explanation:
To find the mass of water, you need to (1) convert grams B₂H₆ to moles B₂H₆ (via molar mass from periodic table), then (2) convert moles B₂H₆ to moles H₂O (via mole-to-mole ratio from reaction coefficients), and then (3) convert moles H₂O to grams H₂O (via molar mass from periodic table).
It is important to arrange the ratios/conversions in a way that allows for the cancellation of units (the desired unit should be in the numerator). The final answer should have 2 sig figs because the given value (3.7 grams) has 2 sig figs.
Molar Mass (B₂H₆): 2(10.811 g/mol) + 6(1.008 g/mol)
Molar Mass (B₂H₆): 27.67 g/mol
1 B₂H₆ + 3 O₂ ---> 2 HBO₂ + 2 H₂O
^ ^
Molar Mass (H₂O): 15.998 g/mol + 2(1.008 g/mol)
Molar Mass (H₂O): 18.014 g/mol
3.7 g B₂H₆ 1 mole 2 moles H₂O 18.014 g
---------------- x --------------- x ----------------------- x ----------------- = 4.8 g H₂O
27.67 g 1 mole B₂H₆ 1 mole
-You wish to make a 0.203 M hydrochloric acid solution from a stock solution of 6.00 M hydrochloric acid. How much concentrated acid must you add to obtain a total volume of 175 mL of the dilute solution?
mL
-In the laboratory, a student dilutes 20.3 mL of a 8.20 M hydrochloric acid solution to a total volume of 200.0 mL. What is the concentration of the diluted solution?
Concentration =
M
-How many milliliters of 9.36 M perchloric acid solution should be used to prepare 1.50 L of 0.700 M ?
mL
For all three questions, we will use the fact that
molarity = (moles of solute)/(liters of solution)1) For 175 mL of solution at 0.203 M, this means that:
0.203 = (moles of solute)/0.175moles of solute = 0.035523 molConsidering the hydrochloric acid solution, if we have 0.035523 mol, then:
6.00 = 0.035523/(liters of solution)liters of solution = 0.035523/6.00 = 0.0059205 = 5.92 mL (to 3 sf)2) If there is 20.3 mL = 0.0203 L, then:
8.20 = (moles of solute)/0.0203moles of solute = 0.16646 molThis means that the molarity of the diluted solution is:
0.16646/(0.200) = 0.832 M (to 3 sf)3) If we need 1.50 L of 0.700 M solution, then:
0.700 = (moles of solute)/1.50moles of solute = 1.05 molConsidering the 9.36 M acid solution, from which we need 1.05 mol of perchloric acid from,
9.36 = 1.05/(liters of solution)liters of solution = 1.05/9.36, which is 0.11217948717949 L, or 112 mL (to 3 sf)Which Ions oxidize aluminum?
Li^+, Ca^2+, Ag+, Sn^2+
Aluminum can be oxidized by [tex]Li^{+}[/tex] and [tex]Ca^{2+}[/tex]
What is oxidizing?Some of the metal corrodes (or oxidizes) and forms the corresponding metal oxide on the surface as a result of a chemical reaction between the metal surface and the oxygen in the air. The corrosion products that occur in some metals, like steel, are highly apparent and loose.
According to reactivity series (The array of metals in the descending order of their reactivities is referred to as the metals' reactivity series. It is sometimes referred to as the metals in the activity series.)
Lithium and calcium ions are more reactive than aluminum ion and they are less electronegative.
Since silver and tin are more electronegative than aluminum so, they cannot oxidize aluminum.
∴ [tex]Li^{+}[/tex] and [tex]Ca^{+2}[/tex] ions can oxidize aluminum.
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diffrentiate between equation and chemical formula
A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae, wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side with a plus sign between the entities in both the reactants and the products and an arrow that points towards the products, and shows the direction of the reaction. The coefficients next to the symbols and formulae of entities are the absolute values of the stoichiometric numbers. The first chemical equation was diagrammed by Jeen Beguin in 1615.
A chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus and minus signs.
Hope this helps you!
Answer:
Explanation:
Chemical Formula:Represents the composition of a substance or compoundUses symbols and subscripts to indicate the types and numbers of atoms in a moleculeExample: H2O represents the chemical formula for waterChemical Equation:Represents a chemical reactionShows the reactants and products involved in the reactionUses chemical formulas and symbolsReactants are on the left side, products on the right side, separated by an arrowExample: 2H2 + O2 → 2H2O represents the reaction of hydrogen gas and oxygen gas to form waterIn summary:Formula describes composition, equation describes a reactionFormula uses subscripts for atom count, equation uses symbols and arrowswater boils at 100 degrees celsius at sea level. If the water in this experiment did not boil to 100 degrees celsius, what could the reason be?
Answer:
It depends on how high you are above sea level
Explanation:
I did an experiment in my Scince class that showed, the less air that is around water will lessen it’s boiling level. We put water in a glass beaker inside of our vacuum chamber, we made a vacuum in he chamber. Making a vacuum is like being on a mountain, the less air the lower the boiling point. The water then began to boil due to the water evaporating. When we reached to maximum vacuum that we could the water started to boil at 61°C. No the water was not very hot, it was just warm water that just so happened to also be boiling, cool right!!! Anyways, we played with dry ice the next day.
Hoped this helped.
Hope I earned your star rating or helpful rating from this.
the air pressure around the experiment is lower than at sea level
Select two descriptions of this matter
Answer:
this image represents both a crystalline solid [you can tell because it is clearly a solid, and it has a tightly packed/organized into rows layout}
and a pure element [you can tell this because it is pure--meaning that it is not a mixture (which is why it's not classified as a homogenous mixture instead)]
hope this helps!
Answer:
1 and 4
Explanation:
Pure element because it is made by same type of atom.
Crystalline solid because its structure define it as a solid
Which of the following is a simple design model that uses the concepts define, optimize, and develop solutions iteratively and in any order?
A. Infused Design
B. FORFLOW
C. Munich Procedural Model
D. Next Generation Design Model
The Munich Procedural Model is a simple design model that uses the concepts define, optimize, and develop solutions iteratively and in any order. C
What is the Munich procedural design?The Munich procedural model is a design that illustrates several opportunities regarding the order in which design process and stages beyond mere iteration should take.
A procedural model commonly used for development is the V-model.
Hence, the Munich Procedural Model is a simple design model that uses the concepts define, optimize, and develop solutions iteratively and in any order.
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What is the first step in the scientific process?
O develop a test
O make a prediction about what may be happening
O observe a natural phenomenon
O generate a scientific hypothesis
O check results by repeating work
[tex]\quad \huge \quad \quad \boxed{ \tt \:Answer }[/tex]
[tex]\qquad \texttt {Observe a natural phenomenon}[/tex]
____________________________________
[tex] \large \tt Explanation \: : [/tex]
At first scientists/researchers observe a natural phenomenon. after enough observation, they make predictions why that phenomenon is happening and the reasons that lead to that particular phenomenon. then they generate scientific hypothesis to explain that phenomenon and after getting enough data they develop tests and perform experiments. And check the results they get and at last based on the results they conclude what actually is happening.
Answered by : ❝ AǫᴜᴀWɪᴢ ❞
Explain the term 'end point'?
What do you mean by a 1.0 M solution?
Answer:
According to me end point is the end of a reaction
A 8.63 g sample of a compound contains 5.51 g of iron, Fe, 1.02g of phosphorus, P, and oxygen, O. Calculate the empirical formula for the compound
The empirical formula for the compound is [tex]Fe_3PO_4[/tex] if A 8.63 g sample of a compound contains 5.51 g of iron, Fe, 1.02g of phosphorus, P, and oxygen, O.
What is the empirical formula?An empirical formula tells us the relative ratios of different atoms in a compound.
We need to calculate the number of moles:
Given data:
Mass of iron - 5.51 g
Mass of phosphorus -1.02g
Mass of oxygen -2.1 g
Moles of iron - [tex]\frac{mass}{molar \;mass}[/tex]
Moles of iron - [tex]\frac{5.51 g}{56 g/mol}[/tex]
0.098 mole
Moles of phosphorus [tex]-\frac{mass}{molar \;mass}[/tex]
Moles of phosphorus - [tex]\frac{1.02g}{31 g/mol}[/tex]
0.032 moles
Moles of oxygen -[tex]\frac{mass}{molar \;mass}[/tex]
Moles of oxygen - [tex]\frac{2.1 g}{16 g/mol}[/tex]
0.13moles
Dividing each mole using the smallest number that is divided by 0.032moles.
Fe:P:O :: 3:1:4
The empirical formula for the compound is [tex]Fe_3PO_4[/tex].
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What are the blue and yellow circles, the red circles, and the darkest blue ?
Answer:
The Red Circles: Liquid, Blue and Yellow Circles: Solid, and Purple Circles: Gas
Explanation:
Should be it based on the picture and given information.
Is CaO a molecular compound?
Answer:
It's a Ionic compound
Explanation:
To tell if CaO (Calcium oxide) is ionic or covalent (also called molecular) we look at the Periodic Table that and see that Ca is a metal and O is a non-metal. When we have a metal and a non-metal the compound is usually considered ionic.
Because we have a metal and non-metal in CaO there will be a difference in electronegativity between the metal and non-metal. This difference results in an electron(s) being transferred from the metal (lower electronegativity) to the non-metal (higher electronegativity). The results in the metal becoming a postitive ion and the non-metal a negative ion. The two opposite charges are attracted and form the ionic bond between atoms in Calcium oxide.
Hazmat Poison gas is in what class?
HAZMAT Class 6 Toxic and infectious substances.
Answer:
CLASS 2 Gases
Explanation:
Hope this helps
What is the best definition of the enthalpy of vaporization, ^ Hvap?
A. The change in the disorder of a system when a liquid changes to a
gas
B. The change in the disorder of a system when a molecule forms
from its atoms
C. The energy needed to raise the temperature of a liquid to the
boiling point
D. The energy needed to change a liquid into a gas
Answer: D. The energy needed to change a liquid into a gas
ZnS (s) + AIP(s) → AI₂S₂(s) + Zn P₂(s)
Answer:
3 ZnS (s) + 2 AIP(s) ---> AI₂S₃(s) + Zn₃P₂(s)
Explanation:
I believe you are asking for this reaction to be balanced. However, after looking more closely, those are not the products that would be created from the reactants. Assuming this is a double-displacement reaction, and taking the most common charges of the ions into consideration, the actual products would be AI₂S₃(s) + Zn₃P₂(s). I apologize if I assumed incorrectly.
For an equation to be balanced, there needs to be the same amount of each element on both sides of the equation.
The unbalanced equation:
ZnS (s) + AIP(s) ---> AI₂S₃(s) + Zn₃P₂(s)
Reactants: 1 zinc, 1 sulfur, 1 aluminum, 1 phosphorus
Products: 3 zinc, 3 sulfur, 2 aluminum, 2 phosphorus
As you can see, there is an unequal amount of each element on the reactants and products side. To balance the equation, coefficients in front of the compound(s) will be necessary.
The balanced equation:
3 ZnS (s) + 2 AIP(s) ---> AI₂S₃(s) + Zn₃P₂(s)
Reactants: 3 zinc, 3 sulfur, 2 aluminum, 2 phosphorus
Products: 3 zinc, 3 sulfur, 2 aluminum, 2 phosphorus
