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1 year ago

Batteries work by letting charged ions flow through an electrolyte solution.

Chemistry

1 answer:

Semmy [17]1 year ago

4 0

Answer:

Batteries work by letting charged ions flow through an electrolyte solution.

A battery is a device that consists of one or more electrochemical cells that can convert stored chemical energy into electrical current. Each cell consists of a positive electrode, or anode, a negative electrode, or cathode, and electrolytes that allow ions to move between the electrodes, allowing current to flow out of the battery to carry out its function.

Explanation:

Its operation is essentially based on a reversible chemical process called reduction-oxidation, in which one of the components is oxidized and the other is reduced; that is, a process whose components are neither consumed nor lost, but merely change their oxidation state, and which in turn can return to their original state under the right circumstances.

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How many atoms of S are in 98.0 grams of hydrosulfuric acid?

noname [10]

<h2>Answer: $6.022\times 10^{23}$ </h2>

Explanation:

The formula for sulphuric acid is $H_{2}SO_{4}$ .

Molecular mass of sulphuric acid is $2(2)+32+16(4)=98g$

$given weight=98g$

Number of moles of sulphuric acid given is $\frac{\text{given weight}}{molar mass}$ = $\frac{98}{98}=1$

The formula indicates that one mole of $H_{2}SO_{4}$ contains $2$ moles of $H$ atoms, $1$ mole of $S$ atoms, $4$ moles of $O$ atoms.

So,the compound contains $1$ mole of sulphur atoms.

$1$ mole of sulphur has $6.022\times 10^{23}$ atoms

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2 years ago

Classify the following as qualitative or quantitative statements, giving your reasons. (a) The sun is approximately 93 million m

omeli [17]

Answer:

a) quantitative

b) qualitative

c) quantitative

d) qualitative

e) quantitative

Explanation:

a) it is a quantitative statement, since it uses the concepts of limits and aproxximation in the calculation to give its estimate.

b) it's a qualitative statement, beacause its an appreciation of someone who thinks that one's work ist better than another's.

c) it is a quantitative statement, since it is an expression that is mathematically demonstrated,

d) it's a qualitative, beacuse it'a a simple opinion of someone.

e) it is a quantitative statement, since this expression is demonstrated in real life and helps to save

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2 years ago

A 108 49in source emits a 633-kev gamma photon and a 606-kev internal-conversion electron from the k shell. what is the binding

____ [38]

Binding energy is the energy needed to emit the electron from the shell. Using the formula below to compute for BE. Binding Energy BE = Energy of photon - Kinetic energy electron
where
Energy proton= 633 keV
KE electron = 606 keV
Binding energy BE = 27 keVThe binding energy of the k subshell is equal to 27 keV.

6 0

1 year ago

Water treatment plants commonly use chlorination to destroy bacteria. a byproduct is chloroform (chcl3), a suspected carcinogen

antiseptic1488 [7]

<span>100. ppb of chcl3 in drinking water means 100 g of CHCl3 in 1,000,0000,000 g of water

Molarity, M

M = number of moles of solute / volume of solution in liters

number of moles of solute = mass of CHCl3 / molar mass of CHCl3

molar mass of CHCl3 = 119.37 g/mol

number of moles of solute = 100 g / 119.37 g/mol = 0.838 mol

using density of water = 1 g/ ml => 1,000,000,000 g = 1,000,000 liters

M = 0.838 / 1,000,000 = 8.38 * 10^ - 7 M <----- answer

Molality, m

m = number of moles of solute / kg of solvent

number of moles of solute = 0.838

kg of solvent = kg of water = 1,000,000 kg

m = 0.838 moles / 1,000,000 kg = 8.38 * 10^ - 7 m <----- answer

mole fraction of solute, X solute

X solute = number of moles of solute / number of moles of solution

number of moles of solute = 0.838

number of moles of solution = number of moles of solute + number of moles of solvent

number of moles of solvent = mass of water / molar mass of water = 1,000,000,000 g / 18.01528 g/mol = 55,508,435 moles

number of moles of solution = 0.838 moles + 55,508,435 moles = 55,508,436 moles

X solute = 0.838 / 55,508,435 = 1.51 * 10 ^ - 8 <------ answer

mass percent, %

% = (mass of solute / mass of solution) * 100 = (100g / 1,000,000,100 g) * 100 =

% = 10 ^ - 6 % <------- answer
</span>

7 0

2 years ago

Read 2 more answers

Bromine is less electronegative than chlorine, yet methyl bromide and methyl chloride have very similar dipole moments. why? sel

diamong [38]

Bromine is less electronegative than chlorine, yet methyl bromide and methyl chloride have very similar dipole moments. This is because the bond distance in methyl bromide is more due to the large size of bromine atom.
Dipole moment is calculated by multiplying the charge on the atom with the bond distance.

4 0

2 years ago