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solniwko [45]
3 years ago
15

Which options identify what the arrows in the diagram

Chemistry
1 answer:
Stolb23 [73]3 years ago
8 0

Answer:

D

Explanation:

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What volume of 0.0748 M perchloric acid can be neutralized with 115 mL of 0.244 M sodium hydroxide?
Irina18 [472]

Answer:

0.375 L

Explanation:

We know that at neutralization, the number of mol  of acid must equal the number of equivalents of base.

This is a reaction 1:1 acid to base:

HClO₄ + NaOH ⇒ NaClO₄ + H₂O

We re given the  moles  of the base indirectly since we know the volume and molarity. From there we can calculate the volume of HClO₄.

Moles NaOH = 0.115 L x 0.244 M = 0.115 L x 0.244 mol/L =0.028 mol

Thus we require 0.028 mol of HClO₄ in the pechloric acid solution:

Molarity = # moles / V ⇒ V = # moles / M

V = 0.028 mol / 0.0748 mol/L = 0.375 L

Note  that this problem can be solved in just one step since

M(HClO₄) x V(HClO₄) = M(NaOH) x V(NaOH)  ⇒

V(HClO₄) = M(NaOH) x V(NaOH) / M(HClO₄)

5 0
3 years ago
What happens to the rate constant as activation energy increases?
Rina8888 [55]

Answer:

D increases

Explanation:

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3 years ago
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100 points will to help
FromTheMoon [43]

Answer:

6. 350kg

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2 years ago
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3. What characteristics of lumpfish make them unique? (Select all that apply.)
stiks02 [169]

Answer:

the male carries the babies

the male guards the nest

The male oxygenates the embryos

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Equal masses of substance A and substance B are at 25°C. Substance A has a lower specific heat capacity than substance B. If 50
liraira [26]
Dang bro that stuff is really hard I’m defiantly on a lower grade lol
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