Answer: The balanced equation is [tex]2SO_{2} + O_{2} + 2H_{2}O \rightarrow 2H_{2}SO_{4}[/tex].
Explanation:
A chemical equation which contains same number of atoms on both reactant and product side is called a balanced chemical equation.
For example, [tex]SO_{2} + O_{2} + H_{2}O \rightarrow H_{2}SO_{4}[/tex]
Here, number of atoms present on reactant side are as follows.
S = 1O = 5H = 2Number of atoms present on product side are as follows.
S = 1O = 4H = 2To balance this equation, multiply [tex]SO_{2}[/tex] by 2 and [tex]H_{2}O[/tex] by 2 on reactant side. Also, multiply [tex]H_{2}SO_{4}[/tex] by 2 on product side.
Hence, the equation can be re-written as follows.
[tex]2SO_{2} + O_{2} + 2H_{2}O \rightarrow 2H_{2}SO_{4}[/tex]
Now, the number of atoms present on reactant side are as follows.
S = 2O = 8H = 4Number of atoms present on product side are as follows.
S = 2O = 8H = 4Since, the atoms present on both reactant and product side are equal. Hence, the equation is now balanced.
Thus, we can conclude that the balanced equation is [tex]2SO_{2} + O_{2} + 2H_{2}O \rightarrow 2H_{2}SO_{4}[/tex].
help pls I'll give you briliantest by tomorrow 11:59pm pls no links
Answer:
It's sunset because the sun sets in the west and rises in the east. The shadow is going west therefore the sun must be in the east. Also the shadow is super long meaning the sun has to be close to the horizon.
Explanation:
g Calculate the pH when (a) 24.9 mL and (b) 25.1 mL of 0.100 M HNO3 have been added to 25.0 mL of 0.100 M KOH solution.
Answer:
Following are the responses to the given choices:
Explanation:
For point a:
Using the acid and base which are strong so,
moles of [tex]H^+[/tex] (from[tex]HNO_3[/tex])
[tex]= 24.9\ mL \times 0.100\ M \\\\= \frac{24.9}{1000\ L} \times 0.100\ M \\\\= 2.49 \times 10^{-3} \ mol[/tex]
moles of [tex]OH^{-}[/tex] (from [tex]KOH[/tex])
[tex]= 25.0\ mL \times 0.100\ M \\\\= \frac{25.0}{1000 \ L} \times 0.100 \ M \\\\\= 2.50 \times 10^{-3}\ mol[/tex]
[tex]1\ mol H^{+} \ neutralizes\ 1\ mol\ of\ OH^{-}[/tex]
So, [tex](2.50 \times 10^{-3} mol - 2.49 \times 10^{-3} mol)[/tex] i.e. [tex]1 \times 10^{-5}[/tex] mol of [tex]OH^-[/tex] in excess in total volume [tex](24.9+25.0) \ mL = 49.9 \ mL[/tex] i.e. concentration of [tex]OH^- = 2 \times 10^{-4}\ M[/tex]
[tex]p[OH^{-}] = -\log [OH^{-}] = -\log [2 \times 10^{-4}\ mol] = 3.70[/tex]
Since, [tex]pH + pOH = 14,[/tex]
so,
[tex]\to pH = 14- pOH = 14- 3.70 = 10.30[/tex]
For point b:
moles of [tex]OH^-[/tex] = from point a [tex]= 2.50 \times 10^{-3} \ mol[/tex]
moles of [tex]H^+[/tex](from[tex]HNO_3[/tex]):
[tex]= 25.1 mL \times 0.100 M\\\\ = \frac{25.1}{1000}\ L \times 0.100 \ M\\\\ = 2.51\times 10^{-3} \ mol[/tex]
1 mol [tex]H^+[/tex] neutralizes 1 mol of [tex]OH^-[/tex]
So, [tex](2.51 \times 10^{-3}\ mol - 2.50 \times 10^{-3}\ mol)[/tex] i.e. [tex]1 \times 10^{-5} \ mol \ of\ H^+[/tex] in excess in the total volume of [tex](25.1+25.0) \ mL = 50.1\ mL[/tex] i.e. concentration of[tex]H^+ = 2 \times 10^{-4}\ M[/tex]
Hence, [tex]pH = -\log [H^+] = -\log[2 \times 10^{-4}] = 3.70[/tex]
1. What is Mars ? Explain your answer.
What is Earth ? Explain your answer.
.
Mars is the fourth planet.
Earth is the third planet.
Both revolve around the Sun.
Both are rocky planets.
Earth is habitable for carbon based life forms.
Mars is not habitable for carbon based life forms.
Score! You manage to find a bottle of bromothymol blue and a few extra beakers. You take one of the empty beakers and add some of the first unlabeled solution and some indicator. The color changes to yellow. You then add some solution from the other unlabeled flask into this beaker and see the color change to blue. What are the identities of each unlabeled solution
Answer:
You manage to find a bottle of bromothymol blue and a few extra beakers. You take one of the empty beakers and add some of the first unlabeled solution and some indicator.
The color changes to yellow.
You then add some solution from the other unlabeled flask into this beaker and see the color change to blue.
What are the identities of each unlabeled solution?
Explanation:
Bromothymol blue is a dye and it is used as an indicator.
It is used as a pH indicator.
In acids, it becomes yellow n in color.
In bases, it turns blue.
You take one of the empty beakers and add some of the first unlabeled solution and some indicator. The color changes to yellow.
That means the unlabeled solution is an acid.
You then add some solution from the other unlabeled flask into this beaker and see the color change to blue.
It is a basic solution.
A compound composed of only nitrogen and iodine is found to contain 3.55% nitrogen by mass. Its empirical and molecular formulas are the same. What is the hybridization of the nitrogen atom in this compound?
Answer:
The nitrogen atom is sp³ hybridized
This is trigonal pyrymid shape
Explanation:
Step 1: Data given
A compound contains only nitroen (N) and Iodine (I)
The procent of nitrogen by mass = 3.55%
Atomic mass of N = 14.0 g/mol
Atomic mass of I = 126.9 g/mol
Step 2: Calculate mass % of iodine
Mass % iodine = 100 % - 3.55%
Mass % iodine = 96.45 %
Step 3: Calculate number of moles
Let's suppose the total mass = 100 grams
Mass of N = 3.55 grams
Mass of I = 96.45 grams
Moles N = 3.55 grams / 14.0 g/mol = 0.254 moles
Moles I = 96.45 grams / 126.9 g/mol = 0.760 moles
Step 4: Calculate empirical formula
For 0.254 moles N we have 0.760 moles I this is 1:3
This means that for 1 mol N we have 3 moles I
The empirical ( and also the molecular) formula is I3N
The nitrogen atom is sp³ hybridized.
This is trigonal pyrymid shape
CAN YOU HELP ME PLZ AND THANKS
Answer:
Question 7 the answer is B
Explanation:
In every nuclear reaction there is always formation of products either by nuclei bombardment or by the elements breaking into two elements of the same mass
Question 8
The answer is A
Nuclear reactions release a huge amount of energy than chemical reactions
A 0.2264 g sample of a pure carbonate, XnCO3(s) , was dissolved in 50.0 mL of 0.1800 M HCl(aq) . The excess HCl(aq) was back titrated with 24.90 mL of 0.0980 M NaOH(aq) . How many moles of HCl react with the carbonate
Answer:
6.56x10⁻³ mol
Explanation:
First we calculate how many HCl moles are there in 50.0 mL of a 0.1800 M solution:
0.1800 M * 50.0 mL = 9.00 mmol HClThen we need to calculate how many HCl moles were in excess, that number is the same as the number of NaOH moles they reacted with:
0.0980 M * 24.90 mL = 2.44 mmol NaOH = 2.44 mmol HClFinally we calculate the difference between the original number of HCl moles and the number remaining after the reaction with XnCO₃:
9.00 mmol - 2.44 mmol = 6.56 mmol6.56 mmol / 1000 = 6.56x10⁻³ molrespiration of rabbit
Answer:
A rabbits respiration should be 30-60 breaths per minute
If the pH of a solution increases from 4.0 to 6.0, the hydronium ion concentration.
A) increases by a factor of 100.
B) decreases by a factor of a 100.
C) decreases by a factor of 1.5
D) increases by a factor of 1.5
explanation and I will give u brainliest
:)
Answer:
the answer is option B is i guess
If the pH of a solution increases from 4.0 to 6.0, the hydronium ion concentration will be increased by a factor 100.
What is pH?
The potential of Hydrogen is the complete version of pH. The negative logarithm of H+ ion concentration is known as pH. As a result, the definition of pH is "potential hydrogen strength." The concentration of hydrogen ions in a particular solution is known as pH, and it is used to determine whether a solution is acidic or basic.
It can be expressed as:
pH = -log [[tex]H_{3}O[/tex]]
Calculation of concentration of hydronium ion with pH formula:
It can be written as, [[tex]H_{3}O[/tex]] = [tex]10^{pH}[/tex]
Case 1: pH = 4
when pH = 4, put the value of pH in above expression.
[[tex]H_{3}O[/tex]] = [tex]10^{4}[/tex] = 10000.
Case 2: pH = 6
when pH = 6, put the value of pH in above expression.
[[tex]H_{3}O[/tex]] = [tex]10^{6}[/tex] = 1000000.
[[tex]H_{3}O[/tex]]1 / [[tex]H_{3}O[/tex]]2 = 10000/1000000
[[tex]H_{3}O[/tex]]1 / [[tex]H_{3}O[/tex]]2 = 1 / 100
Therefore, the concentration of hydronium will be increased by a factor 100.
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pls help !!!!!!!!!!!!!!!!
Answer:
Definitely A.
Explanation:
very hot...................
Which statements correctly describe the relationship between the event and its effect on energy inputs and outputs?
A. The eruption of a volcano increases the concentration of particles in the atmosphere, which decreases the amount of energy that can reach Earth from the Sun in the short term.
B. Burning fossil fuels decreases the concentration of greenhouse gases in the atmosphere, which decreases the amount of heat that reflects back to Earth's surface.
C. Changes in Earth's orbit periodically increase the amount of solar energy reaching Earth from the Sun, which raises temperatures.
Answer:
They Are All Very Good Statements But I Will Go With "A"
Explanation:
I go with "A" Because In The statement it has a cause an effect, it has a positive term and a negative term, in other uses it is "A" between energy inputs and outputs, and events.
The statement that correctly describes the relationship between the event and its effect on energy inputs and outputs is Option A .
What is Energy ?Energy is defined as the capacity to do work .
There are various types of Energy , Light Energy , Sound Energy , Solar Energy , Wind Energy etc .
Volcanic eruptions emit huge amounts of volcanic dust, sulfur compounds and water vapor into the atmosphere .
This reduces the atmospheric transparency and that results into causing hindrance to the solar radiation penetration in the earth's surface ,
This results in short term cooling effect over large areas of earth.
Among all the statements , Option A , The eruption of a volcano increases the concentration of particles in the atmosphere, which decreases the amount of energy that can reach Earth from the Sun in the short term , correctly describe the relationship between the event and its effect on energy inputs and outputs.
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(vi) A solvent extraction in which two ...... liquids move in opposite directions in
continuous contact with each other.
(a) immiscible (b) miscible (c) polar
(d) non-polar
Answer:
(A). Immmiscible
Liquid/Liquid extraction is a solvent extraction in which two immiscible liquids move in opposite directions are in continuous contact with each other.
Explanation:
A liquid/liquid extraction is a method used to separate mixtures based on relative solubilities in two immiscible liquids, i.e., liquids that do not dissolve in each other but rather form separate layers when placed in the same glassware.
The immiscibility of the liquids is as a result of the two liquids having different polarities. One liquid is polar while the other is non polar, usually water which is polar and an organic solvent which is non-polar. The most common pair of extraction solvents used is diethyl ether or simply ether and water. They separate into layers and the position most each solvent in either the bottom or top layer is determined by its density. Ether is always found on the top layer while water is found innthe bottom layer because ether is less than than water. The density of ether is 0.713 g/cm3 and the density of H2O is 1.0 g/cm3.
The compound to be extracted dissolves into either of the layers based on the principle that like dissolves like. Polar compounds will dissolve into the water layer while organic nor non-polar compounds will dissolve in the ether layer. The compound is the extracted from either of the layer it is dissolved in.
Give the corresponding electron configurations for following element atoms, their valence electrons, and their ions, respectively.
a. P
b. Sa
c. Ni
d. Br
e. O
Answer:
Explanation:
Element Electron configuration Valence electron Ion
for atom configuration
P 1s²2s²2p⁶3s²3p³ 3s²3p³ P⁵⁺
Sn 1s²2s²2p⁶3s²3p⁶4s²
3d¹⁰4p⁶4d¹⁰5s²5p² 5s²5p² Sn⁴⁺
Ni 1s²2s²2p⁶3s²3p⁶4s² 4s²3d⁸ Ni²⁺
3d⁸
Br 1s²2s²2p⁶3s²3p⁶4s² 4s²4d⁵ Br⁻
3d¹⁰4p⁵
O 1s²2s²2p⁴ 2s²2p⁶ O²⁻
An atom's electron configuration is a depiction of the distribution of electrons amongst the orbital shells as well as subshells. The electron configuration is frequently used to define an atom's orbitals in its ground state, but it may also be used to depict an atom which has ionized into a negatively charged ion or positively charge ion by accounting for electron loss or gain in succeeding orbitals. Many of an element's physical and chemical features can be linked to its distinct electron configuration. The distinctive chemistry of the element is determined by the valence electrons, which are electrons in the outermost shell.
How do you determine the mass number of an atom?
Explanation:
The number of protons and neutrons. you can simply subtract the number of protons, or atomic number, from the mass number to get your final answer.
How many molecules are contained in 52.5 moles of C2H6?
please explain if you can
Answer:
3.16x10²⁵ molecules
Explanation:
1 mol refers to the amount of a substance. The amount of C₂H₆ molecules (or any other substance) that are in one mol is given by Avogadro's number:
1 mol contains 6.023x10²³ particles (be it atoms, molecules or ions).With that in mind we can calculate how many molecules are there in 52.5 moles:
52.5 mol * 6.023x10²³ molecules/mol = 3.16x10²⁵ moleculesA solution of carbonic acid is at equilibrium. How would the system change is more carbonic acid was added to the solution
Answer:
The equilibrium position shifts to the right, in accordance to the constraint principle
Cuanto equivale 1000 yardas a 1 pie, 1 metro y 1 centímetro
Respuesta:
3000 ft
914.4 m
9.144 × 10⁴ cm
Explicación:
Paso 1: Información provista
Longitud: 1000 yd
Paso 2: Convertir 1000 yd a pies (ft)
Usaremos el factor de conversion 1 yd = 3 ft.
1000 yd × 3 ft/1 yd = 3000 ft
Paso 3: Convertir 1000 yd a metros (m)
Usaremos el factor de conversion 1 yd = 0.9144 m.
1000 yd × 0.9144 m/1 yd = 914.4 m
Paso 4: Convertir 914.4 m a centimetros (cm)
Usaremos el factor de conversion 1 m = 100 cm.
914.4 m × 100 cm/ 1 m = 9.144 × 10⁴ cm
Draw the structure of the starting material needed to make 2‑methylhept‑3‑yne (or 2‑methyl‑3‑heptyne) using sodium amide in liquid ammonia, followed by 1‑bromopropane.
Answer:
See explanation and image attached
Explanation:
2‑methylhept‑3‑yne can be made by the reaction of the compound shown in the image attached with soidamide in liquid ammonia and 1‑bromopropane.
The first step in the reaction is the deprotonation of the alkyne starting material by the amide ion.
This step is followed a nucleophilic substitution reaction of the alkyne with 1‑bromopropane to yield the 2‑methylhept‑3‑yne product.
I first want you to tell me why having a homogenous sample is good but also why it is bad. That is, what are the advantages and disadvantages to having a homogenous sample
Answer:
Following are the responses to the given question:
Explanation:
In many analyses, the homogenous sample with only a particular identity group is desired. Units were picked here depending on their similar characteristics so because research is specifically interested in these qualities. The downside of a homogeneous sample is nevertheless that the exterior validity of a study is decreased. In other words, any results obtained could be appropriately widespread to the general population. On either hand, a heterogeneous sample is capable of overcoming this difficulty, because its diversity is the typical pattern of any sort of sample distortion inside the broader population.
Determine the total kilojoules in two tablespoons of crunchy peanut butter that contains 2 g of carbohydrate, 15 g of fat, and 9 g of protein.
Answer:
The correct answer is -749.437 Kilojoules
Explanation:
In the case of nutrition, Kcal and cal are equal and each macromolecule produces a specific amount of energy in terms of calories. Carbohydrates and protein generate 4 kcal whereas fat generates 9 kcal per gram.
1 g of carbohydrate = 4 kcal
so, 2 gram of carbohydrate = 8 kcal
9 g of protein = 9*4
= 36 kcal
15 g of fat = 15*9
= 135 kcal
in total = 135 + 36 + 8 kcal
= 179 kcal
and, one kcal = 4.186798 kJ
so 179 kcal = 4.186798 * 179
= 749.437 Kilojoules
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Describe how the pH and hydronium ion concentration will change in a solution as an acid is added to it.
Answer:
as acid is added, the pH of a solution decreases and the hydronium acid concentration increases.
Explanation:
the pH & hydronium ion concentration of solution are inversely related by the equation pH=-log(H+).
Acids are hydronium donors, so when we add an acid to a solution, the hydronium in it will decrease.
Using the above equation, we can see that the more hydronium is added, the less the pH will be since there's a negative sign.
10. A 38.0-g sample of NaOH is dissolved in water, and the solution is diluted to give a final
volume of 1.70 L. The molarity of the final solution is
a. 22.3 M.
b, 0.558 M
c 0.95 M
d. 0.0447 M
e. 0.619 M
Answer:
B.0.558M
Explanation:
M=n/L
n=m/Mm
Mm=NaOH
=23+16+1
=40g/mol
n=m/Mm
= 38/40
=0.95
M=n/L
=0.95/1.70
=0.558
QUESTION 1 A 2.5-g copper penny is given a charge of 4.0x10-9 C. If no more than one electron is removed from an atom, what percent of the atoms are ionized by this charging process
Answer:
[tex]\%X=2.34*10^{-14}\%[/tex]
Explanation:
From the question we are told that:
Mass [tex]M=2.5g[/tex]
Charge [tex]q=4*0*10^{-9}[/tex]
Generally the equation for Total number of Atoms in Penny is mathematically given by
[tex]T_a=\frac{Mass}{atomic weight}*1mole[/tex]
[tex]T_a=\frac{2.5}{63.6}*6.02*10^{23}[/tex]
[tex]T_a=2.34*10^{27}atoms[/tex]
Since Number of electrons in a penny is
[tex]e =nT_a[/tex]
[tex]e=29*2.34*10^{27}[/tex]
[tex]e=6.86*10^{23}[/tex]
Therefore
The percentage of the atoms are ionized by this charging process is given as
[tex]\%X=\frac{T_a}{e}[/tex]
[tex]\%X=\frac{2.34*10^{27}}{6.86*10^{23}}[/tex]
[tex]\%X=2.34*10^{-14}\%[/tex]
what temperature is absolute zero
Calculate the molarity of a solution containing 1.5 moles of NaCl in 0.5 L of solution
Answer:
3 M
Explanation: 1.5mol/.5L = 3M
Grade 10 Science send answers plssssss
Answer:
ITS UPSIDE DOWN I CANT ANSWER IT
i will edit the answer if its normal
Explanation:
You have a container of 5L with a Molarity of 0.750. What would be the new volume if you diluted the solution to have a concentration of 9.71M?
Answer:
=64.73..
Explanation:
0.750=5L
9.71=x
0.750*x÷0.750=5L*9.71÷0.750
x=48.55÷0.750
x=64.73..
4
As water and sulfuric acid are mixed together the temperature of the mixture becomes very hot. Select the statements
that best describe why this happens. Assume that both substances start out at room temperature and there is no
external heat source affecting them.
AA chemical reaction is occurring.
Energy is released during the chemical reaction.
C Energy is absorbed during the chemical reaction.
D No chemical reaction occurs because water is inert.
E The lack of a chemical reaction causes the temperature to increase.
Answer:
A chemical reaction is occurring and energy is released.
Explanation:
Heat is released when you combine a strong acid with water, considered exothermic. That's why it's extremely important to add the acid to a large volume of water; not vice versa.
When water and sulfuric acid are mixed together at room temperature the exothermic reaction occurs and energy is released during the chemical reaction. Therefore, option (B) is correct.
What is an exothermic process?An exothermic process can be explained as a thermodynamic process or reaction that liberates energy from the system to its surroundings, generally in the form of heat, light, or sound.
While an endothermic process is an inverse of an exothermic process where the energy absorbs in the form of heat. In the chemistry of chemical reactions, the bond energy is changed into thermal energy during the bond formation.
The energy that is liberated by the reaction happens in the form of the kinetic energy of molecules. The transition of electrons from one energy level to another energy level released energy.
The mixing of water and strong acid such as sulfuric acid release a large amount of energy which even causes the splash of the mixture. Therefore, we avoid adding water to acid instead of we dilute the acid by adding acid to water.
Learn more about the exothermic process, here:
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grams of sodium 9.5g in NaCl
Answer:
3.68 grams.
Explanation:
First we convert 9.5 g of NaCl into moles of NaCl, using its molar mass:
9.5 g ÷ 58.44 g/mol = 0.16 mol NaCl
In 0.16 moles of NaCl there are 0.16 moles of sodium as well.
We now convert 0.16 moles of sodium into grams, using sodium's molar mass:
0.16 mol * 23 g/mol = 3.68 g
how many grams of oxygen are required to reach with 0.125 moles of zinc sulfide?
Answer:
6 g of O₂
Explanation:
We'll begin by writing the balanced equation for the reaction. This is illustrated below:
2ZnS + 3O₂ —> 2ZnO + 2SO₂
From the balanced equation above,
2 moles of ZnS reacted with 3 moles of O₂.
Next, we shall determine the number of mole of O₂ required to react with 0.125 mole of ZnS. This can be obtained as follow:
From the balanced equation above,
2 moles of ZnS reacted with 3 moles of O₂.
Therefore, 0.125 mole of ZnS will react with = (0.125 × 3)/2 = 0.1875 mole of O₂.
Thus, 0.1875 mole of O₂ is needed for the reaction.
Finally, we shall determine the mass of 0.1875 mole of O₂. This can be obtained as follow:
Mole of O₂ = 0.1875 mole
Molar mass of O₂ = 2 × 16 = 32 g/mol
Mass of O₂ =?
Mass = mole × molar mass
Mass of O₂ = 0.1875 × 32
Mass of O₂ = 6 g
Therefore, 6 g of O₂ is required for the reaction.