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KATRIN_1 [288]
2 years ago
6

Carbon monoxide and nitrogen monoxide react to produce carbon dioxide and nitrogen gas. if the system contains platinum, then le

ss energy is required for the reaction to occur. which term best describes the role of platinum in the system?
a.) reactant
b.) product
c.) catalyst
d.) energy​
Chemistry
2 answers:
wariber [46]2 years ago
7 0

Answer:1: The two oxygen atoms in a molecule of oxygen gas share their outer electrons. Which type of bond do the oxygen atoms form?(1 point)

Potential

2. What does it mean for a reaction to release energy?

The relative potential energy of the reaction is positive.

3. Heat is added to a chemical system. Which energy will increase?

the kinetic energy of the reactant molecules

4. Carbon monoxide and nitrogen monoxide react to produce carbon dioxide and nitrogen gas. If the system contains platinum, then less energy is required for the reaction to occur. Which term best describes the role of platinum in the system?

Catalyst

5. The two oxygen atoms in a molecule of oxygen gas share their outer electrons. Which type of bond do the oxygen atoms form?

Covalent

Explanation:

Just took the quiz, 100%

Veseljchak [2.6K]2 years ago
6 0

Answer:

Catalyst

Explaination:

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Answer:

It is 20. g HF

Explanation:

H2 + F2 ==> 2HF  ...  balanced equation

Since the question is asking us to find the mass of product formed, we will want to first convert the molecules of H2 into moles of H2 (we could do this at the end of the calculations, but it's just as easy to do it now).

moles of H2 present (using Avogadro's number):  

3.0x1023 molecules H2 x 1 mole H2/6.02x1023 molecules = 0.498 moles H2

From the balanced equation, we see that 1 mole H2 produces 2 moles HF.  Therefore, we can now find the theoretical mass of HF produced from 0.498 moles H2:

0.498 moles H2 x 2 moles HF/1 mol H2 = 0.996 moles HF formed.

The molar mass of HF = 20.01 g/mole, thus...

0.996 moles HF x 20.01 g/mole = 19.93 g HF = 20. g HF formed (to 2 significant figures)

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