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Aleksandr-060686 [28]
3 years ago
11

A general term for a chemical which accelerates a reaction without becoming chemically involved is called a

Chemistry
2 answers:
Rudiy273 years ago
6 0

<u>Answer:</u>

<em>D. Catalyst</em>

<em></em>

<u>Explanation:</u>

A catalyst is a substance that speeds up a chemical reaction, but it is not consumed by the reaction. Hence a catalyst can be recovered chemically unchanged at the end of the reaction .

A catalyst lowers the activation energy and hence a large number of reactant particles collide and undergoes reaction. The particles have enough energy since the activation energy which is the minimum energy required for a reaction to occur becomes less.

Nastasia [14]3 years ago
3 0

Answer: Catalyst

Explanation:

The catalyst is a chemical which accelerates a reaction decreasing the activation energy, that is the energy that is necessary for a reaction occur. We can see in a standard graphic that the uncatalyzed reaction has a big curve while the catalyzed reaction has a minor curve. It shows the more facility that a catalyzed reaction has to occur.

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HOW MANY LITERS ARE IN 7110.5 mL? WHAT IS THE UNIT?
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About 7.1 litres all you have to do is to divide divide the volume value by 1000
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1 year ago
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Question 5 (1 point)
ollegr [7]

Answer:

0.00125 moles H₃X

Solution and Explanation:

In this question we are required to calculate the number of moles of triprotic acid neutralized in the titration.

Volume of NaOH used = final burette reading - initial burette reading

                                      = 39.18 ml - 3.19 ml

                                      = 35.99 ml or 0.03599 L

Step 1: Moles of NaOH used

Number of moles = Molarity × Volume

Molarity of NaOH = 0.1041 M

Moles of NaOH = 0.1041 M × 0.03599 L

                          = 0.00375 mole

Step 2: Balanced equation for the reaction between triprotic acid and NaOH

The balanced equation is;

H₃X(aq) + 3NaOH(aq) → Na₃X(aq) + 3H₂O(l)

Step 3: Moles of the triprotic acid (H₃X used

From the balanced equation;

1 mole of the triprotic acid reacts with 3 moles of NaOH

Therefore; the mole ratio of H₃X to NaOH is 1 : 3.

Therefore;

Moles of Triprotic acid = 0.00375 mole ÷ 3

                                     = 0.00125 moles

Hence, moles of triprotic acid neutralized during the titration is 0.00125 moles.

3 0
4 years ago
WILL GIVE BRAINLIEST
natta225 [31]

Answer:

It is greater than -600kJ/mol and the amount of energy required to break bonds is greater than the amount of energy released in forming bonds.

Explanation:

In an endothermic reaction, the reaction requires a determined amount of energy to occurs.

The reaction of the problem has H = -600kJ/mol. The reaction is endothermic and the energy that the reaction needs is absorbed by the reactants. That means, the energy of products:

Is greater than -600kJ/mol and the amount of energy required to break bonds is greater than the amount of energy released in forming bonds.

7 0
3 years ago
1) 0.143 g Mg into atoms<br> 2) 0.101 kg Ti into atoms
Neporo4naja [7]

Answer:

The answer to your question is below

Explanation:

1) 0.143g of Mg into atoms

- Look for the atomic number of Magnesium in the Periodic table              

Atomic number = 24.31 g

-Use the Avogadro's number to find the number of atoms

                          24.31g ------------------- 6.023 x 10²³ atoms

                           0.143 g -----------------  x

                           x = (0.143 x 6.023 x 10²³) / 24.31

                           x = 8.613 x 10²² / 24.31

                           x = 3.54 x 10²¹ atoms

2) 0.101 kg of Ti into atoms

-Look for the atomic number of Titanium in the Periodic table

Atomic number = 47.87 g

-Use the Avogadro's number to find the number of atoms

                      47.87 g --------------------- 6.023 x 10²³

                      101 g    ----------------------  x

                       x = (101 x 6.023 x 10²³) / 47.87

                       x = 6.08x 10²⁵ / 47.87

                      x = 1.27 x 10²⁴ atoms                            

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3 years ago
What are two challenges posed by the near-vacuum of space?
cestrela7 [59]
It is a devoid of matter and gaseous pressure and atmospheric pressure.
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