The concentration (molarity) of [H₃O⁺]=0.776 M
Further explanationWe balance the reaction first so that the number of atoms and the charge of the product and reactant are the same
Reaction(balanced) :
H₂S⇒2H⁺+S²⁻ (eq 1)
2H⁺+6H₂O⇒4H₃O⁺+2OH⁻ (eq 2)
mass of H₂S=0.33 g
mol H₂S (MW=34 g/mol) :
[tex]\tt mol=\dfrac{0.33}{34}=0.0097[/tex]
From equation 1, mol H⁺ = 2 x mol H₂S , so mol H⁺ =
[tex]\tt 2\times 0.0097=0.0194[/tex]
From equation 2, mol H₃O⁺ = 2 x mol H⁺(4 : 2) , so mol H₃O⁺ :
[tex]\tt 2\times 0.0194=0.0388[/tex]
Or simply mol H₃O⁺ = 4 x mol H₂S = 4 x 0.0097 = 0.0388
the molarity of [H₃O⁺] =
[tex]\tt M=\dfrac{n}{V}=\dfrac{0.0388}{0.05~L(50~ml)}=0.776[/tex]
how many moles of aluminum are needed to produce 2.8 moles of aluminum chloride
Answer:
1.4 mol
Explanation:
that my i got i was doing for it
ANSWER THE QUESTION BELOW FOR BRAINLEST AND 10 POINTS
Answer:
C
Explanation:
It just is, if you look online and conduct research you will see that compounds look just like number 3. It cannot be A or B.
Interactivity: Hot on the Inside
Why is a map considered a model?
Answer:
Every map is a representation of reality, thus a model in the broadest sense. Sometimes mapping is distinguished from modelling by stating that mapping is a simple representation of reality, while modelling is trying to cover more complexity in reality.
Explanation:
PLEASE HELP
In the equation 2KCIO3 → 2KC1 + 302, how many moles of oxygen are produced when 3.0 mol of KCIO3 decompose completely?
Moles of Oxygen produced : 4.5 moles
Further explanationA reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products.
The reaction coefficient shows the mole ratio of the reactants and products
Reaction
2KCIO₃ → 2KCl + 30₂
moles of KCIO₃ = 3
From equation, mol ratio of KCIO₃ : O₂ = 2 : 3, so mol O₂ :
[tex]\tt mol~O_2=\dfrac{3}{2}\times 3=4.5[/tex]
What is the number of grains of rice in the 40 mL sample? Show all of your work using dimensional analysis.
The number of grains of rice in the 40 mL sample : 880 grains
Further explanationGiven
from recorded data:
mass of 20 grains rice = 0.4 g
mass beaker = 29.5 g
mass beaker+rice=47.1 g
mass only rice = 17.5 g
Required
the number of grains of rice
Solution
Maybe if we use a digital scale with high resolution accuracy we can get the mass of 1 grain of rice
But we still use existing data
To determine the mass of rice in the beaker, we just need to find the difference between the mass of the beaker + rice - beaker, or we can set the scale to zero before we add rice to the beaker.
If we look at this difference, the mass of the rice in the beaker should be :
47.1-29.5 = 17.6 g
Since the data shows that 20 grains of rice mass 0.4 g, so 17.6 g of rice contains:
[tex]\tt 17.6~g\times \dfrac{20~grains}{0.4~g}=880~grains[/tex]
Is there currently a cure for HIV
Answer:
No
Explanation:
There are vaccines, to prevent it, made by Dr. Fauci, but no cure
what is the chemical name for carbon?
A cube of zinc at 15.C is placed in contact with a cube of tin at 45. Which statement describes the initial flow of heat between the cubes? *
The chemical process in which small organic molecules called monomers bond together to form a chain is called A) production B) polymerization C technology D) modification
Lipase is an enzyme that breaks down the fat in food molecules into smaller molecules. Which of the following best describes the function of lipase?
Which of the following changes on different celestial objects due to the force of gravity?
Mass
Weight
Height
Width.
using your personal feelings to explain or describe is being..
Answer:
deep ............................
Answer:
( A Heart) fragile clueless of what love is then one day... somebody comes, somebody comes and you get a feeling a feeling of happiness a feeling of pure love not like any crush! Then one day... you lose them, you lose them and they are gone at first you feel cold like a piece of you just left the person that mad you feel this joy! You were just having another normal day but then you met then after that day you were happy but that one person! That one person made you So happy if you lost them you cant imagine how you could go what was life Before. so the second they leave it feels like your heart lost a piece that could only be filled with love! over the days your'e heart starts to feel numb and feel so lost you wonder and wonder. ( The heart)
Explanation
Question 4
Calculate the nlass of 7.1 x 1024 formula units of magnesium hydroxide, Mg(OH),.
its me again this is how you find the answer. note: i dont have the periodic table to see the exact atomic mass to find the molar mass however this is the answer:
so the actual formula is Mg(OH) with a 2 as a subscript because there are 2 Mg. so with Mg(OH)2 the Molar mass is 58.32g/mol. 58.32 g/mol x 7.1x1024 = 4.1x1026g
Which of the following explains a difference between genes and chromosomes
Answer:
Dude I need the answers so i can help you!
Explanation:
Give me the answers plz
pls pls answer questions for chem final within 45 mins i will give brainliest
Mole Conversion: How many moles in 45 grams of H2SO4
Answer:
0.45881381335
Explanation:
divide 45 by the molar mass of H2SO4
45/98.079
Answer:
0.45
Explanation:
divise
How many moles are in 150.0 grams of Fe2O3
Answer:
its 150 hope this helps
Explanation:
What is the result of excess nutrients (nitrates) in North Carolina waters?
A.Algae growth is high
B.Algae growth is low
C.Algae growth is moderate
Answer:
A. Algae growth is high
Explanation:
Substances that contains high concentration of nitrates, phosphates etc add nutrients to the water body. This is because organisms like ALGAE consider these compounds nutrients needed for their growth and development. The process whereby these nutrients becomes excessive in a water body is referred to as EUTROPHICATION.
Eutrophication of a water body i.e excessive nutrients like nitrates in a water body like the North Carolina waters being described in this question will lead to rapid and excessive growth of algal species. This increase in algal growth can cause the water body to be low in oxygen content and ultimately become inhabitable by living organisms.
How many moles of H3PO4 are contained in 150.0 mL of 18.1 M H3PO4?
Answer:
Number of moles = 2.72 mol
Explanation:
Given data:
Number of moles of H₃PO₄ present = ?
Molarity of solution = 18.1 M
Volume of solution = 150.0 mL (150/1000 = 0.15 L)
Solution:
Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.
Formula:
Molarity = number of moles of solute / L of solution
By putting values,
18.1 M = number of moles / 0.15 L
Number of miles = 18.1 M × 0.15 L
Number of moles = 2.72 mol
Multiple choice- fill in the blank
Thermal energy is the (blank)
1. average kinetic energy of the particles in an object
2. total energy of the particles in an object
3. total transitional kinetic energy of the particles in an object
And internal energy is the (blank)
1. average kinetic energy of the particles in an object
2. total energy of the particles in an object
3. total transitional kinetic energy of the particles in an object
Answer:
Thermal energy refers to several distinct physical concepts, such as the internal energy of a system; heat or sensible heat, which are defined as types of energy transfer; or for the characteristic energy of a degree of freedom in a thermal system, where is temperature and is the Boltzmann constant
Explanation:
5.Are pure solids included in equilibrium expressions? Explain your answer.
Answer:
Pure solids or liquids are excluded from the equilibrium expression because their effective concentrations stay constant throughout the reaction. The concentration of a pure liquid or solid equals its density divided by its molar mass.
Explanation:
Hope this helps!!!
True or False Hydrogen is amable used to in limpa
Answer:
False
Explanation:
Answer:
false
Explanation:
false
What do the two arrows in the diagram most likely represent?
O radiation
O photosynthesis
cellular respiration
Oenergy transfers
A student repeats a reaction several times to test the effects of various
changes on the reaction rate. The data table shows the results. Based on
these results, how would decreasing the concentration of the reactants
change the reaction rate?
Conditions
Original
Higher concentration
Higher temperature
Metal added
Reaction Time (5)
10 seconds
5 seconds
5 seconds
5 seconds
A. More information is needed to determine what would happen to
the reaction rate.
B. Decreasing the concentration would increase the reaction rate.
C. Decreasing the concentration would decrease the reaction rate.
D. Decreasing the concentration would have no effect on the
reaction rate.
Answer:
C) Decreasing the concentration would decrease the reaction rate.
Explanation:
A.P.E.X
A soccer ball was kicked it had the mass of .42 kg and accelerated at 25m what is the force
Helppppppp. much needed help lol
Answer:
Isotope
Explanation:
Isotopes are variants of a particular chemical element which differ in neutron number, and consequently in nucleon number.
Which statement best describes how an ionic bond forms?
The transfer of electrons forms strong bonds between ions.
The sharing of electrons forms strong bonds between ions.
The transfer of electrons results in repulsive forces between molecules.
The sharing of electrons results in attractive forces between molecules.
The transfer of electrons forms strong bonds between ions is the best
statement that describes ionic bond formation.
Ionic bond is also known as electrovalent bonding. It involves the transfer
of electrons from an element to another. This is done so as to enable the
elements achieve a stable configuration and formation of new compounds.
The ionic bonds formed are usually strong so as to prevent the elements
from losing their stable configuration.
Read more on https://brainly.com/question/13526463
Most elements occur in nature as a single isotope.
TRUE
FALSE
Answer:
false
Explanation:
because elements never exist in nature as single isotopes they are always combined
Answer:
FALSE
Explanation:
in the cases of three elements (tellurium, indium, and rhenium) the most abundant isotope found in nature is actually one (or two) extremely long-lived radioisotope(s) of the element, despite these elements having one or more stable isotopes.
Which landform explains the lack of cultural interaction between ancient China and ancient India? (4 points)
the Loess Plateau
the Chang River valley
the Gobi Desert
the Himalaya Mountains
Answer:
I had this question and it was the 4th one for me
Explanation: