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2 years ago

Which of these accurately describes the reactants of a reaction?

2 answers:

Nutka1998 [239]2 years ago

8 0

The correct answer is C. Substances that are used up in a reaction

Reactants are substances that are mixed and that react to each other and change and create new substances.

oksian1 [2.3K]2 years ago

4 0

Option (C) is the correct answer.

In the chemical reaction, reactants are the starting elements or compounds which will chemically react and will form the products. Reactants are only present on the left hand side of the reaction and products are present on the right hand side of the reaction.

Reactants present in the reaction is completely used up in the reaction to form products implies no traces of reactants will be present in the product side.

For example:

$2H_{2}+O_{2}\rightarrow 2H_{2}O$

Here, hydrogen and oxygen are the reactants whereas water is the product (new substance). Hydrogen reacts with oxygen and form water i.e. hydrogen and oxygen is completely used up in the reaction to form new substance i.e. water.

Hence, substances that are used up in a reaction is known as reactants of the reaction.

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I have a science fair soon and I need to make a interesting experiment but I want it to be easy in the same time. Can you please

agasfer [191]

You should make a density trap, you get different liquids with different density's ( corn starch , water , alcohol , syrup) and pour them into a big vase and the different density's will sit on top of each other . the best thing to do is to use food coloring so that each level is a different color.

4 0

2 years ago

Read 2 more answers

Honors Stoichiometry Activity Worksheet

posledela

Explanation: Here, we will be considering 1 cup is equal to 1 mol.

2 water + sugar + lemon juice → 4 lemonade

Moles of water present in 946.36 g of water $=\frac{946.36 g}{236.59 g/mol}=4 mol$

Moles of sugar present in 196.86 g of water $=\frac{196.86 g}{225 g/mol}=0.8749 mol$

Moles of lemon juice present in 193.37 g of water $=\frac{193.37 g}{257.83 g/mol}=0.7499 mol$

Moles of lemonade in 2050.25 g of water $=\frac{2050.25 g}{719.42 g/mol}=2.8498 mol$

As we can see that number of moles of lemon juice are limited.

So, we will consider the reaction will complete in accordance with moles of lemon juice.

1 mole lemon juice reacts with 2 mol of water,then 0.7499 mol of lemon juice will react with:

$\frac{2}{1}\times 0.7499 mol = 1.4998 mol$ of water

Mass of water used = 1.4998 mol × 236.59 g/mol=354.8376 g

Water remained unused = 946.36 g - 354.8376 g =591.5223 g

1 mole lemon juice reacts with mol of sugar,then 0.7499 mol of lemon juice will react with:

$\frac{1}{1}\times 0.7499 mol = 0.7499 mol$ of water

Mass of sugar used = 0.7499 mol × 225 g/mol = 168.7275 g

Sugar remained unused = 196.86 g - 28.1325 g

1 mole of lemon juice gives 4 moles of lemonade.

Then 0.7499 mol of lemon juice will give:

$\frac{4}{1}\times 0.7499 mol=2.996 mol$ of lemonade

Mass of lemonade obtained = 2.996 mol × 719.42 g/mol = 2157.9722 g

Theoretical yield of lemonade = 2157.9722 g

Experimental yield of lemonade = 2050.25 g

Percentage yield of lemonade:

$\frac{\text{Experimental yield}}{\text{theoretical yield}}\times 100$

$\frac{2050.25 g}{2157.9722 g}\times 100=95.00\%$

The percentage yield of lemonade is 95% and ingredient which remained unused were water and sugar.

7 0

3 years ago

Steve left for a fishing trip at 11:00. He

Lemur [1.5K]

Answer:

Ne gets home at 1:45.

Explanation:

It’s 11:00. He takes 1 hour to make the 40 mile trip. It’s 12:00. He takes 60 minutes to gather lunch, rod and reel, and at the lake. It’s 1:00. He takes 45 minutes to get home. It’s 1:45.

I hope this helped and please mark me as brainliest!

5 0

2 years ago

Is the second one or the fourth one?

ratelena [41]

Answer:

D. Light waves travel fastest through a vaccumm

Explanation:

"In a vacuum , light waves move their fastest: 186,000 miles per second (300,000 kilometers per second). This is also the fastest that anything in the universe moves. But when light waves move through air, water or glass, they slow down."

Please mark me as brainliest! <3

Hopefully I could help! Good luck.

5 0

2 years ago

The initial pressure is 4.0 atm and the initial volume is 30.0 mL. If the pressure is increased to 8.0 atm, what will be the new

vaieri [72.5K]

Answer:

New volume, V2 = 15mL

Explanation:

Given the following data;

Initial volume, V1 = 30mL

Initial pressure, P1 = 4atm

New pressure, P2 = 8atm

To find the new volume V2, we would use Boyles' law.

Boyles states that when the temperature of an ideal gas is kept constant, the pressure of the gas is inversely proportional to the volume occupied by the gas.

Mathematically, Boyles law is given by;

$PV = K$