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riadik2000 [5.3K]

3 years ago

14

A student performs an acid-base titration experiment to determine the amount of ascorbic acid in different brands of juice. Whic

h solution should the student use as the base solution in this acid-base titration experiment?
A.) HCl
B.) NaOH
C.) LiBr
D.)CaCl2

1 answer:

Mice21 [21]3 years ago

8 0

Answer:

idn Mann nnnnnnnn . .....mmmmm mmmm aaaaaaa it's a

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Alkanes are unreactive except in _____ reactions.

netineya [11]

<span>Alkanes are unreactive except in combustion reactions.</span>

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3 years ago

What would happen to the oxygen atoms in ozone if the ozone layer were completely destroyed by ultraviolet radiation?

ale4655 [162]

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1 year ago

Calculate the mass of calcium carbide produced if 1770 kJ of heat is absorbed.

Flauer [41]

Answer:

$m=243.72g$

Explanation:

Hello,

For the given chemical reaction:

$CaO(s) + 3 C(s) \rightarrow CaC_2(s) + CO(g)$

Whose heat of reaction is 464.8 kJ/mol which means that energy is absorbed due to the chemical reaction, we can compute the moles of calcium carbide via the following relationship:

$n=\frac{1770kJ}{464.8 kJ/mol}\\ \\n=3.81mol$

Then, since the molar mass of calcium carbide is 64 g/mol, the yielded mass turns out:

$m=3.81mol*\frac{64g}{1mol}\\ \\m=243.72g$

Best regards.

7 0

3 years ago

What will happen to the following equilibrium if Cl2

REY [17]

The following equilibrium will shift in the direction of the product:

<h3>Further explanation</h3>

Given

Reaction

4HCl + O₂ → 2H₂O + 2Cl₂

Cl₂ was removed

Required

Equilibrium changes

Solution

Reaction = - action

adding the products ⇒ Shifts in the direction of the reactants

reducing the products ⇒Shifts in the direction of the products

Cl₂ as a product, so if Cl₂ is taken or reduced, the reaction will try to maintain system equilibrium by moving to the right (product formation) ⇒ Shift in the direction of the product:

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3 years ago

Hi! Can someone help me with this???

nikklg [1K]

Hey there,

I hope this answer solves your doubt.

<u>S</u><u>t</u><u>e</u><u>p</u><u>-</u><u>b</u><u>y</u><u>-</u><u>s</u><u>t</u><u>e</u><u>p</u><u> </u><u>Expla</u><u>n</u><u>a</u><u>t</u><u>i</u><u>o</u><u>n</u><u>:</u><u>-</u>

The question is asking if the bonds between Carbon and Chlorine in CCl4 will be single, double or triple bonds.

<em>(</em><em>The structure of CCl4 </em><em>i</em><em>s attached as picture. Check it</em><em>)</em>

As per image, the structure consists of <u>Singl</u><u>e</u><u> </u><u>b</u><u>o</u><u>n</u><u>d</u><u>s</u><u>.</u> It is <u>4 single bonds</u>.

4 0

2 years ago