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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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What is the empirical formula of a compound that is 18.8% Li, 16.3% C , and 64.9% O
zlopas [31]

Greetings!

To find the empirical formula you need the relative atomic mass of each element!

Li = 6.9

C = 12

O = 16

You can simply change the percentages into full grams

Li = 18.8g

C = 16.3g

O = 64.9


Then you use this to find the Number of moles = amount in grams / atomic mass

Li = 18.8 ÷ 6.9 = 2.7246

C = 16.3 ÷ 12 = 1.3583

O = 64.9 ÷ 16 = 4.0562

Then divide each number of moles by the smallest value:

Li = 2.7246 ÷ 1.3583 = 2.0

C = 1.3583 ÷ 1.3583 = 1

O = 4.0562 ÷ 1.3583 = 2.9 ≈ 3


So that means that there are 2 Li, 1 C, and 3 O

Empirical formula would be:

Li₂CO₃


Hope this helps!

3 0
3 years ago
What is the predominant intermolecular force in CBr4
vovikov84 [41]
CBr4 is a symmetric tetrahedral molecule so it will be non-polar.
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Science quiz, i think its chem... grade 8
lina2011 [118]

Answer:

Everything to the right of the arrow is a product.

Explanation:

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What is the composition of tungsten?
Setler79 [48]

Answer:

90% to 97% pure tungsten in a matrix of nickel and copper or nickel and iron.

Explanation:

Heavy metal tungsten alloys are 90% to 97% pure tungsten in a matrix of nickel and copper or nickel and iron. The addition of these alloying elements improves both the ductility and machinability of these alloys over non-alloyed tungsten.

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