how many moles of ZnCl2 and how many moles of h2 are obtained during the interaction of 3 moles of hcl and zn
Answers
Answer: 1.5 mol of each
Explanation:
The balanced equation for this reaction is \(\text{Zn}+2\text{HCl} \longrightarrow \text{ZnCl}_{2}+\text{H}_{2}\)
This means that if 3 moles of HCl are consumed (I'm assuming there is unlimited zinc), 1.5 moles of both hydrogen gas and zinc chloride will be produced.
Related Questions
how many moles of sodium hydroxide are needed to completely neutralize 50 ml of a 0.2 m solution of hcl?
Answers
0.01 moles of sodium hydroxide are needed to completely neutralize 50 ml of a 0.2 m solution of HCl.
In order to calculate the amount of sodium hydroxide needed to completely neutralize 50 ml of a 0.2 m solution of HCl, we need to determine the number of moles of HCl present in the solution. To do this, we will use the following formula:
Moles of HCl = Concentration of HCl (mol/L) x Volume of HCl (L)
In this case, the concentration of HCl is 0.2 mol/L and the volume of HCl is 0.05 L (50 ml is equivalent to 0.05 L).
Therefore, the number of moles of HCl in the solution is 0.2 mol/L x 0.05 L = 0.01 mol.
Since sodium hydroxide reacts with HCl in a 1:1 ratio, the amount of sodium hydroxide needed to completely neutralize the HCl is equal to 0.01 mol.
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The ___ blends into outer space.
Select one:
O a. troposphere
O b. stratosphere
O c. mesosphere
O d. exosphere
Answers
Answer:
Exosphere
Explanation:
it is found at the end reaching outer space
which molecule can't be exist?
A)NCl3 B)OF6 C)ONF3 D)PCl3
Answers
Answer:
OF6
Explanation:
Oxygen and fluorine have almost the same electronegativity, so oxygen isn't able to donate enough electron density to fluorine to form OF6. Atomic size. There isn't enough room around an oxygen atom for six fluorine atoms.
:-befrank
pls answer question will mark brainliset tyty
Answers
Answer:
A b/c aluminum
Explanation:
don't forget to follow rate like
Calculate the number of moles of magnesium, chlorine, and oxygen atoms in 7.30 moles of magnesium perchlorate, Mg(CLO4)2
Pls helppp
Will mark brainliest
No links pls
Answers
Answer:
152
Explanation:
Which statements describe how heat flows in foil? Check all that apply. Heat flows in all directions. Heat flows from left to right only. The atoms on top of the foil absorb heat first. The atoms near the candle absorb heat first. Heat flows from the cooler atoms to the warmer atoms. Heat flows from the warmer atoms to the cooler atoms.
Answers
Answer:
A D F
Explanation:
Its right but its not in order But its A D and F
Answer:
answer in picture
Explanation:
A buret is a tool designed to transfer precise amounts of liquid. A buret initially contains 70.00 milliliters (mL) of a solution, and a beaker initially contains 20.00 mL of the solution. The buret drips solution into the beaker. Each drip contains 0.05 mL of solution. After how many drips will the volumes of the solutions in the buret and beaker be equal
Answers
Answer:
900 drips
Explanation:
total volume = 90ml
both buret and beaker will be equal at 45ml which is half of 90ml
1 drip from buret = 0.05ml
1ml = 20 drips
45 x 20 = 900 drips
Need an answer for this question pls
Answers
Television technology has evolved from the process of analogue to the process of digital signal transmission.
What is technology?We know that technology has to do with the correct application of the scientific knowledge so as to solve practical problems. The chemical engineer is ultimately involved in the process of problem solving the society.
The television technology has evolved from the analogue transmission of the signals when I was a child to the digital transmission of signals thus most of the television stations now do digital transmission.
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a 0.12 m solution of an acid that ionizes only slightly in solution would be termed _____
Answers
The term "ionizes" refers to the process by which an acid dissociates into its ions in solution. An acid that ionizes only slightly in solution is considered a weak acid.
A 0.12 m (molar) solution of a weak acid that ionizes only slightly would be considered dilute because it contains a relatively low concentration of acid molecules.
A 0.12 M solution of an acid that ionizes only slightly in solution would be termed a "weak acid."
Weak acids do not fully ionize in solution, meaning they only partially dissociate into their constituent ions. This results in a lower concentration of H+ ions and a higher pH value compared to strong acids.
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Given what you now know about the action of cyanide on cellular respiration, explain why the patients died of lack of oxygen while their blood oxygen levels were normal?.
Answers
Given what we know, we can confirm that the patients will have died from a "lack of oxygen" even with normal blood oxygen levels due to the fact that cyanide blocks the function of oxygen in the body.
What does cyanide do?The main function of cyanide is that it blocks the oxygen from being used in the electron transport chain. This chain creates ATP, the energy needed for the body to complete any functions. Since the oxygen cannot be used despite it being present, the patients die of a lack of oxygen even with normal levels.
Therefore, we can confirm that the patients will have died from a "lack of oxygen" even with normal blood oxygen levels due to the fact that cyanide blocks the function of oxygen in the body.
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The pressure of a sample of helium in a 200. ml. container is 2.0 atm. If the 5 points
helium is compressed toa volume of 10 ml without changing the
temperature, what would be the pressure of the gas? *
4000 atm
1000 atm
40 atm
0.1 atm
Answers
The pressure of the gas = 40 atm
Further explanationGiven
200 ml container
P = 2 atm
final volume = 10 ml
Required
Final pressure
Solution
Boyle's Law
At a fixed temperature, the gas volume is inversely proportional to the pressure applied
\(\tt \rm p_1V_1=p_2.V_2\\\\\dfrac{p_1}{p_2}=\dfrac{V_2}{V_1}\)
Input the value :
P₂ = P₁V₁/V₂
P₂ = 2 x 200 / 10
P₂ = 40 atm
Due w/in this hour! Am I adding? Thank you.
Answers
Answer:
this is a synthesis equation so you would add the reactants to get products according the the law of conservation of mass
Explanation:
is liquid nitrogen and nitrogen gas itself considered as a liquid gas mixture?? And why?
Answers
Answer:
No
Explanation:
I think because liquid nitrogen is only made by 1 substance which is nitrogen that exist as a gas.. It only become liquid when the temperature is very cold not because of other combination of elements.. Hope it helps
Now draw a PE curve for the interaction of two Ne atoms, and then on the same set of axes draw a curve for the interaction of two Xe atoms. Explain the relative depths of the potential wells and the relative positions of the minima along the x-axis
Answers
When we draw a potential energy (PE) curve for the interaction of two atoms, we are essentially plotting the energy of the system as a function of the distance between the two atoms.
In the case of Ne and Xe, the PE curve for both atoms will have a similar shape, but the relative depths of the potential wells and the positions of the minima along the x-axis will differ.
The relative depths of the potential wells represent the stability of the interaction between the two atoms. A deeper potential well indicates a more stable interaction, while a shallower potential well indicates a less stable interaction. The relative depths of the potential wells for Ne and Xe will be different due to the differences in their atomic radii. Xe is a larger atom than Ne, and therefore the attractive forces between the two atoms will be stronger, resulting in a deeper potential well.
The relative positions of the minima along the x-axis represent the equilibrium bond distance between the two atoms, which is the distance at which the potential energy is minimized. The equilibrium bond distance for Xe will be greater than that for Ne due to the larger atomic radius of Xe. This means that Xe atoms will be more likely to form bonds at longer distances than Ne atoms.
In summary, the PE curves for Ne and Xe will have similar shapes but different relative depths of potential wells and positions of minima due to the differences in their atomic radii. Xe will have a deeper potential well and a greater equilibrium bond distance than Ne.
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A student measures the mass of a solution before and after a chemical reaction takes place. in both cases the students measures the mass to be 50.25 g on an electronic balance with an uncertainty of 0.05 g. the student realizes that the ranges of uncertainty for each measurement overlap exactly. which claim can the student make?
Answers
The student can claim that the mass of the solution before and after the chemical reaction is the same.
This can be supported by the fact that the ranges of uncertainty for each measurement overlap exactly, indicating that the mass of the solution was the same before and after the reaction. This is because the ranges of uncertainty for the two measurements overlap exactly, meaning that the two values are statistically indistinguishable. Mathematically, this means that the absolute difference between the two measurements
\((50.25 g - 50.25 g)\) is within the combined uncertainty of the two measurements\((0.05 g + 0.05 g).\)
Therefore, the student can conclude that the mass of the solution has not changed.
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Which of the following elements would be brittle?
Sulfur
Magnesium
Rubidium
Lithium
Answers
Answer:
Sulfur
Explanation:
when 100 ml of 0.16 m naf is added to 100 ml of 0.16 m hf, relative to the ph of the 0.10 m hf solution the ph of the resulting solution will
Answers
As 100 ml of 0.16 m naf and 100 ml of 0.16 m hf are combined, the resulting solution's pH rises when compared to the 0.10 m hf solution.
What does pH stand for?a metric for determining how basic or acidic a thing or solution is. The pH scale ranges from 0 to 14. A pH value of 7 is considered neutral on this scale, meaning it is neither acid nor basic. It's more acidic if the pH value is below 7, and more basic if the pH value is above 7.
What is a typical pH value?The pH scale goes from 0 (very acidic) to 14 (neutral) (strongly basic or alkaline). The neutral range on this scale has a pH of 7.0. Blood typically has a pH range of 7.35 to 7.45, making it mildly basic.
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2. When protein is digested by the body, what molecule do they become?
Answers
Answer:
Amino acid
Explanation:
When you eat food the body's digestive system breaks down the protein into the individual amino acids, which are absorbed and used by cells to build other proteins and a few other macromolecules, such as DNA
The following chemical reaction takes place in aqueous solution: SnSO 4 (aq)+2 NaOH(aq) Sn(OH) 2 (s)+Na 2 SO 4 (aq) Write the net tonic equation for this reaction.
Answers
The net ionic equation for the reaction between SnSO₄ and NaOH is:
Sn²⁺(aq) + 2OH¯(aq) —> Sn(OH)₂(s)We'll begin by writing the dissociation equation for SnSO₄ and NaOH.
SnSO₄(aq) —> Sn²⁺(aq) + SO₄²¯(aq)
NaOH(aq) —> Na⁺(aq) + OH¯(aq)
In solution, the reaction will proceed as follow:
SnSO₄(aq) + NaOH(aq) —>
Sn²⁺(aq) + SO₄²¯(aq) + Na⁺(aq) + OH¯(aq) —> Sn(OH)₂(s) + Na⁺(aq) + SO₄²¯(aq)
Cancel the spectator ions (i.e Na⁺ and SO₄²¯) and write 2 before OH¯ to obtain the net ionic equation.
Sn²⁺(aq) + 2OH¯(aq) —> Sn(OH)₂(s)
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Which substance is most likely to form in a precipitation reaction?
A) calcium nitrate
B) copper(I) nitrate
C) iron(I) chloride
D) iron(II) sulfide
E) potassium sulfate
Answers
Answer:
(d) Iron (II) sulfide (FeS) is precipitated most likely and is an renowned ore of iron. (e) Potassium sulfate (K₂SO₄) is like to remain mostly in its ionic form and has less tend to precipitate. Thus FeS will be more likely to be precipitated.
Explanation:
Brainliest please?
A buffer is prepared which contains 0.10 m nitrous acid, hno2, and 0.12 m sodium nitrite, nano2. (ka=4.5x10-4) calculate the ph after 0.019 mol of naoh is added to 1.00 l of the buffer.
Answers
0.1 M nitrous acid (HNO2) and 0.12 M sodium nitrite (NaNO2) are combined to create a buffer. (Ka=4.5x10-4) After 0.016 mol of NaOH has been added to 1.00 L of the buffer, determine the pH.
A buffer solution, sometimes referred to as a pH buffer or hydrogen ion buffer, is an aqueous combination of a weak acid and its conjugate base, or vice versa. The pH nitrous changes at all when a small amount of a strong acid or basic is added to it. Buffer solutions are used in a wide range of chemical processes to keep pH values almost constant. Buffering is used by many biological systems to regulate pH in the natural world. For instance, the bicarbonate buffering system regulates the pH of blood.
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With what volume of 5. 00 m hf will 4. 03 g of calcium hydroxide react completely, according to the following reaction?.
Answers
The volume of 5.00 M HF that will react with 4.72 g of calcium hydroxide is 0.0256 L.
What is volume?volume is a mathematical quantity that defines three diamensional space.
2HF + Ca(OH)₂ → CaF₂ + 2H₂O
Step 1: find the moles of Ca(OH)₂
moles= mass÷ molar mass
from periodic table the molar mass of Ca(OH)₂ = 40 +( 16+1)₂= 74 g/mol
moles = 4.72 g÷ 74 g/mol =0.0638 moles
Step 2: use the moles ratio to determine the moles of Hf
from the equation above HF: Ca(OH)₂ is 2:1
therefore the moles of HF = 0.0638 moles x 2/1 =0.1276 moles
Step 3: find the volume of HF
volume=moles /molarity
molarity =5.00 M = 5.00 mol/L
=0.1276 moles / 5.00 mol/l =0.0256 L
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Complete Question.
The complete Question is attached below
True or False Bay is an estuary that contains diverse organisms
Answers
Answer:
true
Explanation:
What is combustion??
Answers
Answer:
Measure of how much heat is given off when a substance is burned
Explanation:
hope this helps
Explain what is wrong with the following structure.
Answers
Answer:
H = 1+
O = 2-
O Has 8 protons weight 16g/mole
H has 1 proton weight 1g/mole
H - O - H
Oxygen is in group 6 which means it holds 6 valence electrons, leaving 2 for bonds.
A valence electron is an outer shell electron that can form a chemical bond if the outer shell is not closed.
Now when an atom bonds to another in a single bond, both atoms contribute one valence electron in order to form a shared pair.
In the picture O has 7 Valence electrons, so it would have a negative charge of 1.
The middle Hydrogen has 3 valence electrons which would make hydrogen have a charge of negative 1.
Should look like this
.. ..
H . .O. .H = H-O-H
.. ..
What is the percent of O in
CO2?
(C = 12.01 amu, O = 16.00 amu)
[? ]%
Answers
Answer:
show me a pic?? then I'll lyk
Explanation: Because carbon atoms are only 1/3 of the compound since the other 2 atoms are oxygen.
In IONIC BONDING, the [Blank] TRANSFERS it’s electron(s) to the [Blank] .
Answers
Answer:
An ionic bond forms when atoms transfer electrons.
Explanation:
Ionic bonds are formed when atoms transfer electrons. (In contrast, covalent bonds are formed when atoms share electrons.)
There's a distinction between the two: when two atoms react to form an ionic bond, one atom would completely lose one electron, while the other would completely gain that electron. The atom that loses the electron becomes a positively-charged ion called a cation, whereas the atom that gains the electron becomes a negatively-charged ion called an anion.
For example, consider the reaction between a sodium atom and a chlorine atom: .
When the sodium atom and the chlorine atom encounter, the sodium atom would lose one electron to form a positively-charged sodium ion, . The chlorine atom would gain that electron to form a negatively-charged chlorine ion .
These two ions will readily attract each other because of the opposite electrostatic charges on them. This electrostatic attraction (between two ions of opposite charges) is an ionic bond.
Overall, it would appear as if the sodium atom transferred an electron to the chlorine atom to form an ionic bond.
In contrast, when two atoms react to form a covalent bond, they share electrons without giving any away completely. Therefore, it is possible to break certain covalent bonds apart (using a beam of laser, for example) and obtain neutral atoms.
On the other hand, when an ionic bond was broken, the result would be two charged ions- not necessarily two neutral atoms. The electron transfer could not be reversed by simply breaking the bond.
For example, when table salt is melted (at a very high temperature,) the ionic bond between the sodium ions and chloride ions would (mostly) be broken. However, doing so would only generate a mixture of and ions- not sodium and chlorine atoms.
Air is about 78% nitrogen gas (N2) by mass. The molar mass of nitrogen gas is 28.0
g/mol. A 100.0-g sample of air contains how many moles of nitrogen?
2.8
3.6
28
78
Answers
Answer:
2.8 moles
Explanation:
Data obtained from the question include:
Percentage composition of N2 in air = 78%
Molar mass of N2 = 28g/mol
Mass of air = 100g
Number of mole of N2 =..?
Next, we shall determine the mass of N2 in air. This can be obtain as follow:
Mass composition of N2 in air = 78% of 100
= 78/100 x 100 = 78g
Therefore, the mass of the N2 in air is 78g
Finally, we shall determine the number of mole of N2 as follow:
Molar mass of N2 = 28g/mol
Mass of N2 = 78g
Number of mole of N2 =.?
Mole = mass /Molar mass
Number of mole of N2 = 78/28
Number of mole of N2 = 2.8 moles.
Therefore, 100g of air contains 2.8 moles of N2
Answer:
A. 2.8
Explanation:
Dolomite is very similar to calcite, but some of the calcium in its structure has been replaced with ______.
Answers
Answer:
magnesium
Explanation:
Think about exothermic reactions. Think about endothermic reactions. Compare and contrast the two. Give examples from the readings in your comparison. Also give examples from what you may already know
Answers
Answer:
any combustion reaction.
a neutralization reaction.
rusting of iron (rust steel wool with vinegar)
the thermite reaction.
reaction between water and calcium chloride.
reaction between sodium sulfite and bleach (dilute sodium hypochlorite)
reaction between potassium permanganate and glycerol.
Explanation: