A solution of hydrogen peroxide, H2O2, is titrated withpotassium permanganate, KMnO4, according to the following equation: 5H2O2 + 2KMnO4
+ 3H2SO4 = 5O2 + 2MnSO4 + 8H2O + K2SO4. It requires 46.0 mL of 0.145 Mol/L
KMnO4 to titrate 50.0 mL of the solution of H2O2. What is the mole per liter
concentration of H2O2 in the solution?

Answers

Answer 1

Answer: 5H2O2 + 2KMnO4+ 3H2SO4 = 5O2 + 2MnSO4 + 8H2O + K2SO4

0,145 moles of KMnO4----------in--------1000ml
x moles of KMnO4---------------in------------46ml
x = 0,00667 moles of KMnO4

according to the reaction:
2 moles of KMnO4------------------5 moles of H2O2
0,00667 moles of KMnO4----------------x
x = 0,01668 moles of H2O2

0,01668 moles of H2O2---------in-----------50ml
x moles of H2O2--------------------in----------1000ml
x = 0,334 mol/L H2O2

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NEED HELP! ASAP 30 POINTS!!
Fill the blanks

Answers

Answer:

Explanation:

In ions, protons are never taken or given. Only the number of electrons are changed

Br^1- gains 1 electron, so the number of electrons increases from 35 to 36. No protons are taken away, to the number of protons and the atomic number of Br1- is still 35, and the number of neutrons is still 45.

What is the source of fuel that is most widely used today?a. Coal
b. Crude oil
c. Natural gas
d. Nuclear energy

Answers

The source of fuel that is most widely used today is Natural gas. The answer is letter C. The rest of the choices do not answer the question above,

the average adult human male has a total blood volume of 5.0 L. if the concentration of sodium ion in this average individual is 0.135 M, what is the mass of sodium ion circulating in the blood?

Answers

Molarity is a way of expressing concentration that is equal to the ratio of the moles of the solute to the liters of solution. The amount of substance in moles can be calculated through,
moles = (molarity) x (volume in liters)
Substituting the values,
moles = (0.135 M) x (5.0 L) = 0.675 moles
Multiply this value with the molar mass of sodium ion,
mass = (0.675 moles) x (23 g/ mole) = 15.525 grams
Therefore, the mass of sodium ion in the blood is 15.525 grams.

Explanation of atomic radius

Answers

Ah yes.

The atomic radius is basically the distance between the nucleus of the atom and the outermost electron in the farthest orbital of the atom. The more bigger the atomic radius , the less powerful is the force that holds together the nucleus and its electrons.

With a 1.0–2.0 Sv dosage of radiation, an individual can expect to A. die. B. hemorrhage. C. see no immediate effect. D. have nausea and hair loss.

Answers

the answer would be C. see no immediate effect.

The answer is D. have nausea and hair loss.

A charged particle made up of several non-metallic atoms joined together is a(n) Select one: a. covalent ion
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d. electron ion

Answers

Answer:

The correct answer is option b, that is, polyatomic ion.

Explanation:

A molecular ion also called polyatomic ion refers to a charged chemical species comprising two or more atoms bonded covalently with each other. The polyatomic ions comprise two or more non-metallic atoms. An example of a polyatomic ion is an ion of nitrate that comprises one atom of nitrogen and three atoms of oxygen. As the atoms in a polyatomic ion are bonded covalently, they are considered to possess a single charged unit.

It would be B. A polyatomic ion. Poly means many, while atomic refers to atoms more specifically the nature or category of these atoms is that they are non metallic ones, or basically nonmetal atoms. All of these nonmetallic atoms are joined together through covalent bonds and altogether they possess a unique charge. An example of a polyatomic ion would be sulphate or (SO4)^-3.

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