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DerKrebs [107]
3 years ago
6

Fill in the coefficients that will balance the following reaction:

Chemistry
2 answers:
kumpel [21]3 years ago
8 0
2NaCl + 1CaS →1Na2S + 1CaCl2
Anastaziya [24]3 years ago
5 0

Answer: 2NaCl+CaS\rightarrow Na_2S+CaCl_2

Explanation: The coefficients of a_0,  a_1,  a_2,  and  a_3 are 2, 1, 1 and 1 respectively.

According to the law of conservation of mass, the mass of the products must be same as the mass of the reactants in every chemical equation.

In order to do so , the number of atoms of every element must be same on both sides of the equation and thus the chemical equation is balanced.


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Kevin has 5 fish in his fish tank jasmine has 4 times as many fish as Kevin.How many fish does jasmine have?
madreJ [45]
Jasmine have 20 fish because4 times 5 equals 20
4 0
3 years ago
A wood pole is 12 metres long and is cut into 5 equal sections. If each cut wastes 10 cm of pole, what length would each section
Sophie [7]

Each section would be 230 centimeters or 2.30 meters long.

<h3>Sectional division</h3>

The original wood pole is 12 meters long.

12 meters = 12 x 100 = 1200 centimeters

It is to be cut into 5 equal sections: 1200/5 = 240 centimeters

But each cut wastes 10 cm of the pole.

          240 - 10 = 230 centimeters.

Thus, each section would be 230 centimeters or 2.30 meters long.

More on sectional divisions can be found here: brainly.com/question/15381501

#SPJ1

6 0
2 years ago
What causes the force that produces gas pressure?
Yuliya22 [10]

( The rapid motion and collisions of molecules ) with the walls of a container causes pressure.

Source; https://chem.libretexts.org/Bookshelves/Physical_and_Theoretical_Chemistry_Textbook_Maps/Supplemental_Modules_(Physical_and_Theoretical_Chemistry)/Physical_Properties_of_Matter/States_of_Matter/Properties_of_Gases/Gas_Pressure

3 0
3 years ago
How much mass does 1 mol of O2 gas have?
cluponka [151]

Answer: 15.99 x2g

Explanation:

8 0
2 years ago
A solid is 5 cm tall, 3 am wide, and 2 cm thick. It has a mass of 135 g. What is the solid's density?
gizmo_the_mogwai [7]

<u>Answer:</u>

density of solid = 4.5 g/cm³

<u>Explanation:</u>

density = mass ÷ volume

• We know the mass of the object (135 g). We need to calculate the volume:

Volume = length × width × thickness

             = 5 cm × 3 cm × 2 cm

             = 30 cm³

• Now we can calculate the solid's density:

density = 135 g ÷ 30 cm³

            = 4.5 g/cm³

4 0
2 years ago
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