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4 years ago

Which is the formula of nitrogen (I) oxide?

Chemistry

2 answers:

REY [17]4 years ago

5 0

Answer:

Oxides of nitrogen are a mixture of gases that are composed of nitrogen and oxygen. Two of the most toxicologically significant compounds are nitric oxide (NO) and nitrogen dioxide (NO2). Other gases belonging to this group are nitrogen monoxide (or nitrous oxide, N2O), and nitrogen pentoxide (NO5).

Explanation:

Alona [7]4 years ago

4 0

The formula of nitro oxide is NO

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What is the mass of carbon dioxide formed when 36g of carbon is burnt? C+O2 ------->C02

Anestetic [448]

Answer:

Mass = 132 g

Explanation:

Given data:

Mass of CO₂ formed = ?

Mass of C burnt = 36 g

Solution:

Chemical equation:

C + O₂ → CO₂

Number of moles of carbon:

Number of moles = mass/molar mass

Number of moles = 36 g/ 12 g/mol

Number of moles = 3 mol

now we will compare the moles of carbon and carbon dioxide.

C : CO₂

1 : 1

3 : 3

Mass of CO₂:

Mass = number of moles × molar mass

Mass = 3 mol × 44 g/mol

Mass = 132 g

7 0

3 years ago

Which statement best describes waves? A.Waves can only travel in empty space B.Waves cannot propagate without medium C.Waves can

avanturin [10]

The statement that best describes waves is B. Waves cannot propagate without a medium

6 0

3 years ago

Read 2 more answers

How to calculate the mass of copper

faust18 [17]

You can acquire the atomic mass of any chemical element by using the periodic table. I've provided an example on a document below to help you identify the components of an element block from the periodic table. Now if you want to find the mass of an exact amount of a substance you use moles for that. That's why it's called molar mass. To find the molar mass of a substance follow this little guide:

Start with the number of grams of each element given.
Convert the mass of each element to moles utilizing the molar mass from the periodic table.
Divide each mole value by the smallest number of moles deciphered.
Round your answer. This is the mole ratio of the element.

*Use the third document I've inserted below to follow the guide.

*All documents used here are property of their respective owners*

7 0

3 years ago

Read 2 more answers

Which of the following reactions takes place with an increase in entropy under standard conditions?a. NH4(aq)+ CH3COO-(aq) ---&g

Elden [556K]

Answer:

a. NH4(aq)+ CH3COO-(aq) ---> NH3 (aq) +CH3COOH(aq)

Explanation:

Entropy -

In a system, the randomness is measured by the term entropy .

Randomness basically refers as a form of energy that can not be used for any work.

The change in entropy is given by amount heat per change in temperature.

When solid is converted to gas entropy increases,

As the molecules in solid state are tightly packed and has more force of attraction between the molecules, but as it is converted to gas, the force of attraction between the molecule decreases and hence entropy increases.

So,

The particles of the substance , if are tightly held by strong force of attraction will decrease the entropy ,

And

If the particles are loosely held , the entropy will increase .

When liquid is converted to solid entropy decreases,

As the molecules in liquid state are loosely packed and has less force of attraction between the molecules, but as it is converted to solid, the force of attraction between the molecule increases and hence entropy decreases.

Hence ,

The order of entropy is -

gas > aqueous > liquid > gas .

Hence, from the question ,

The reaction where there is increase in entropy is -

a. NH₄(aq)⁺ + CH₃COO⁻(aq) ---> NH₃ (aq) + CH₃COOH(aq)

4 0

3 years ago

A board has a mass of 750 g. If you ground the whole board down to sawdust, what would be the mass of the pile of sawdust?

mash [69]

The law of conservation of mass states that mass can neither be created nor destroyed. For example in an isolated system, mass of the reactants is equal to the mass of the products. Thus, mass or the quantity of the system under consideration will remain unchanged through any physical or chemical process.

In the given example, the board initially has a mass of 750 g. It is physical transformed to sawdust by grinding. Based on the conservation of mass, the pile of sawdust would still weigh 750 g.

4 0

3 years ago