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4 years ago

When standardizing an iodine solution, 30.37 mL of the solution was required to

1 answer:

6 0

<span>First thing, we need to know the chemical equation for the titration reaction and it is as follows:

KIO3(aq) + 6 H+ (aq) + 5 I- (aq) = 3 I2(aq) + 3 H2O(l) + K+ (aq) </span>
<span> C6H8O6(aq) + I2(aq) = C6H6O6(aq) + 2 I- (aq) + 2 H+ (aq)</span>

We are given the amounts and the concentrations. We use these values to calculate what is needed. We calculate as follows:

<span>5 mg/mL C6H8O6 ( 10.0 mL ) ( 1 g / 1000 mg ) (1 mol / 176.14 g) ( 1 mol I2 / 1 mol C6H8O6 ) ( 1 mol KIO3 / 3 mol I2 ) = 9.46x10^-5 mol KIO3 needed</span>

<span>Molarity = 9.46x10^-5 mol KIO3 / .03037 L = 0.003 M KIO3</span>

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What pollutants can contribute to acid precipitation and how are these pollutants generated?

damaskus [11]

Answer:

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Explanation:

I don't know about question but I can try to find it

4 0

3 years ago

N a football game, two players tackle each other so hard that they both fly in opposite directions after they hit each other. �W

evablogger [386]

Answer:

Newton's Third Law

Explanation:

Newton's Third Law stipulates that for every action there is an equal and opposite reaction.

So when the two players are tackling they exert a force on each other.

If player 1 tackles (exerts a force) player 2, player 2 will exert an equal and opposite reaction on player 1 as stated in Newton's Third Law.

Therefore when they tackle each other so hard they both experience reaction forces so powerful that they fly in opposite directions.

Thus this is an example of the Newton's Third Law.

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3 years ago

2 UO2+ + 4 H+U4+ + UO22+ + 2 H2O is second order in UO2+ and third order overall. Complete the rate law for this reaction in the

mr Goodwill [35]

Answer:

$r=k[UO_2^+]^2[H^+]$

Explanation:

The given reaction is :-

$2UO_2^++4H^+\rightarrow U^{4+}+UO_2^{2+}+2H_2O$

According to the law of mass action:-

The rate of the reaction is directly proportional to the active concentration of the reactant which each are raised to the experimentally determined coefficients which are known as orders. The rate is determined by the slowest step in the reaction mechanics.

Order of in the mass action law is the coefficient which is raised to the active concentration of the reactants. It is experimentally determined and can be zero, positive negative or fractional.

The order of the whole reaction is the sum of the order of each reactant which is raised to its power in the rate law.

m = 2 = is order with respect to $UO_2^+$

n = order with respect to H+

overall order = m+n = 3

n = 3 - m = 3 - 2 = 1

Rate law is:-

$r=k[UO_2^+]^2[H^+]$

6 0

3 years ago

What is the molecular formula of a compound that contains 66% Ca and 34% P and

Lostsunrise [7]

Answer:

Ca3P2

Explanation: find out what 66% of the molar weight of the molecule is and then find out how many moles of Ca that would be by dividing it by the molar weight of Ca

then do the same for P

6 0

3 years ago

What is the nature of ions formed by different atoms.

lys-0071 [83]

The nature of ions formed by different atoms is as follows:

Metal atoms form positively-charged ions
Non-metal atoms form negatively-charged ions

Ions are substances which are formed when neutral atoms gain or lose electrons.

There are two types of ions based on the charge the ion carries;

anions - which are negatively-charged
cations - which are positively-charged

The nature of the ions formed by different atoms depend on whether the atoms are atoms of metals or atoms of non-metals.

Metal atoms form positively-charged ions by the loss of one or more electrons as illustrated below:

M → M⁺ + e⁻

where; M is a metal atom, M⁺ is a metal ion, and e⁻ is an electron.

Non-metal atoms form negatively-charged ions by the gain of one or more electrons as illustrated below:

N + e⁻ → N⁻

where; N is a non-metal atom, N⁻ is a non-metal ion, and e⁻ is an electron.

In conclusion, the nature of ions formed by atoms depends on the nature of the atom, whether they are metallic or non-metallic atoms.

Learn more about ions at: brainly.com/question/14511468

#SPJ1

6 0

1 year ago