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Ierofanga [76]
3 years ago
6

What is the name given to substances that are initially involved in a chemical reaction?

Chemistry
2 answers:
True [87]3 years ago
4 0

Answer:

the awnser is reactants

stellarik [79]3 years ago
3 0
The answer is reactants:)
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What are common materials​
disa [49]

Steel

Fabric (Cotton, Polyester, Felt)

Plastic

Wood

Paper

3 0
3 years ago
Match the vocabulary word with its definition. Match the items in the left column to the items in the right column. 1. The actua
tekilochka [14]

Answer:

1. The actual amount of product that is produced from a given amount of reactant or reactants.  → actual yield  

2. A law which states that in ordinary chemical reactions, the sum of the masses of the reactants always equals the sum of the masses of the products.    → Conservation of Mass

3. The reactant that is not used up in a reaction that goes to completion

→ excess reactant  

4. The reactant that limits how much product is produced in a reaction that goes to completion. It is used up in the reaction. → limiting reactant  

5. The ratio of the actual yield to theoretical yield multiplied times 100.

→ percent yield

6. The maximum calculated amount of product produced from a given reactant in a reaction that goes to completion. → theoretical yield

7. The study of the quantitative relationships between reactants and products in a chemical reaction. → stoichiometry  

Explanation:

1. The actual amount of product that is produced from a given amount of reactant or reactants.  → actual yield  

  • The actual yield is the actual amount of product that is produced in a chemical reaction and it can be determined experimentally.

2. A law which states that in ordinary chemical reactions, the sum of the masses of the reactants always equals the sum of the masses of the products.    → Conservation of Mass

  • The law of conservation of mass states that mass in an isolated closed system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.

3. The reactant that is not used up in a reaction that goes to completion

→ excess reactant  

  • In any chemical reaction between two or more reactants, the excess reactant is the substance that is leftover when the chemical reaction is ended. The amount of product formed is not limited by this reagent.

4. The reactant that limits how much product is produced in a reaction that goes to completion. It is used up in the reaction. → limiting reactant  

  • In any chemical reaction between two or more reactants, the limiting reactant is the substance that is consumed completely when the chemical reaction is ended. The amount of product formed is limited by this reagent, since the reaction cannot continue without it.

5. The ratio of the actual yield to theoretical yield multiplied times 100.

→ percent yield

  • percent yield  = (actual yield / theoretical yield) *100

6. The maximum calculated amount of product produced from a given

reactant in a reaction that goes to completion.

→ theoretical yield

  • theoretical yield  is defined as the amount of the obtained desired product.

7. The study of the quantitative relationships between reactants and products in a chemical reaction.

→ Stoichiometry

  • Stoichiometry is a branch of chemistry that deals with relationships between reactants and/or products in a reaction to determine desired quantitative data.

3 0
3 years ago
Carbon monoxide (CO) is a poisonous gas because it binds very strongly to the oxygen carrier hemoglobin in blood. A concentratio
velikii [3]

<u>Answer:</u> The amount of CO that is occupied in the room is 1.98\times 10^3L

<u>Explanation:</u>

We are given:

Concentration of CO = 8.00\times 10^2ppm=800pm by volume

This means that 800\mu L\text{ or }800\times 10^{-6} of CO is present in 1 L of blood

To calculate the volume of cuboid, we use the equation:

V=lbh

where,

V = volume of cuboid

l = length of cuboid = 10.99 m

b = breadth of cuboid = 18.97 m

h = height of cuboid = 11.89 m

V=10.99\times 18.97\times 11.89=2478.83m^3

Converting this into liters, by using conversion factor:

1m^3=1000L

So,  2478.83m^3=2.479\times 10^6L

Applying unitary method:

In 1 L of blood, the amount of CO present is 800\times 10^{-6}

So, in 2.479\times 10^6L of blood, the amount of CO present will be = \frac{800\times 10^{-6}}{1}\times 2.479\times 10^{6}=1983.2L=1.98\times 10^3L

Hence, the amount of CO that is occupied in the room is 1.98\times 10^3L

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¿Qué relación hay entre las propiedades químicas que tienen en común cada grupo de elementos y su número de electrones de valenc
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Which of these is an example of biotic factor
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Biotic components, or biotic factors, can be described as any living component that affects another organism or shapes the ecosystem. This includes both animals that consume other organisms within their ecosystem, and the organism that is being consumed
6 0
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