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podryga [215]
3 years ago
8

How does a catalyst increase reaction rate?

Chemistry
1 answer:
Effectus [21]3 years ago
7 0
By increasing the action energy
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2AgNO3 (aq) + BaCl2 (aq)<br> --&gt;<br> 2AgCl (s) + Ba(NO3)2 (aq)
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2AgCl (s) + Ba(NO3)2 (aq)

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3 years ago
In a chemical reaction, the __________ is consumed completely during the reaction. A) stoichiometry B) excess reagent C) ideal c
Anuta_ua [19.1K]

I believe it is D. because stoichiometry allows people to determine how much reactant is consumed in a chemical reaction.

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What has mass and takes up space?<br> A. matter<br> B. weight<br> C. volume<br> D. space
spayn [35]

Answer:

Matter is anything that has mass and takes up space.

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3 years ago
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Polychlorinated biphenyls (PCBs), which were formerly used in the manufacture of electrical transformers, are environmental and
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<span> C12H4Cl6 + 23 O2 + 2 H2O → 24 CO2 + 12 HCl </span>

<span>(a) </span>
<span>(13.5 mol O2) x (2 mol H2O / 23 mol O2) = 1.17 mol H2O </span>

<span>(b) </span>
<span>(17.6 mol H2O) x (12 mol HCl / 2 mol H2O) x (36.4611 g HCl/mol) = 3850 g HCl </span>

<span>(c) </span>
<span>(90.4 g HCl) / (36.4611 g HCl/mol) x (24 mol CO2 / 12 mol HCl) = 4.96 mol CO2 </span>

<span>(d) </span>
<span>(106.01 g CO2) / (44.00964 g CO2/mol) x (2 mol C12H4Cl6 / 24 mol CO2) x (360.8782 g C12H4Cl6/mol) = </span>
<span>72.4 g C12H4Cl6 </span>

<span>(e) </span>
<span>(4.2 kg C12H4Cl6) / (360.8782 g C12H4Cl6/mol) x (12 mol HCl / 2 mol C12H4Cl6) x (36.4611 g HCl/mol) = </span>
<span>2.5 kg HCl</span>
4 0
3 years ago
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The pressure in a bicycle tire is 1.34atm at 33.0 ° C. At what temperature will the pressure inside the tire be 1.60atm?
Y_Kistochka [10]

Answer:

92.37°C

Explanation:

Assuming the volume remains the same in both the states ( bicycle tire).

Then as per ideal gas equation

P_1/T_1 = P_2/T_2

where P1, P2 are pressure at two different states and T1, T2 are temperature at these two states

Given:

P1 = 1.34 atm, T1 = 33.0 ° C = 306K

P2 = 1.60 atm, T2 = ?

1.34/306 = 1.60/T_2

⇒ T2 = 1.60×306/1.34

= T2= 365.37K= 92.37°C

8 0
3 years ago
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