2 years ago

What is a catalyst in a chemical reaction?

1 answer:

4 0

A substance that increases rate of rxn by changing orientation of molecules and/or activation energy. both increase effectivity of collisions.

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Consider the formation of hcn by the reaction of nacn (sodium cyanide) with an acid such as h2so4 (sulfuric acid): 2nacn(s)+h2so

Artemon [7]

2NaCN(s) + H₂SO₄(aq) --> Na₂SO₄(aq) + 2HCN(g)

The molar ratio between NaCN : HCN is 2:2 or 1:1

Mass of HCN = 16.7 g

Molar mass of HCN = 1 + 12 + 14 = 27 g/mol

Molar mass of NaCN = 49 g/mol

Therefore, the mass of NaCN is

16.7 g of HCN x 49 g/mol of NaCN / 27 g/mol of HCN = 30.3 grams of NaCN

Therefore, 30.3 grams of NaCN gives the lethal dose in the room.

5 0

3 years ago

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Which class of compounds does ammonia blog

Igoryamba

T'belongs to the hydrides, it's a nitrogen hydride.

8 0

3 years ago

Density is a derived unit of mass / volume.

lapo4ka [179]

Answer:

1kg/L

Explanation:

1.) convert grams to kilograms

1000g÷1000=1kg

2.)use formula to find density

$density = \frac{mass}{volume}$

= 1kg/1.0L

=1kg/L

6 0

2 years ago

Which of these is an example of a metaphor?

emmainna [20.7K]

Answer:

a i think

Explanation:

because it was the only one that compared something to another

5 0

3 years ago

In the sentence "After conducting the science experiment,we recorded and analyzed the results," what does the word conducting me

gulaghasi [49]

Anything related to the word "performing/conducting"

4 0

3 years ago

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