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elena55 [62]
3 years ago
10

Why was mass lost from the crucible during the reaction?

Chemistry
1 answer:
Alexxandr [17]3 years ago
6 0
If the crucible wasn't covered with a lid the reactants may have produced a gas that was released into the surroundings, or mass may have been lost in the form of water vapour.
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According to the kinetic-molecular theory, the collision between two ideal gas particles is a result of
Svetlanka [38]
<span>The correct answer is neither attraction nor repulsion.</span>
<span>Kinetic Molecular Theory explains that gas particles are in constant motion and exhibit perfectly elastic collisions. The motion of gas particles is random, meaning that there are no attractive forces on each other or on their surroundings. When two particles collide, the total kinetic energy is conserved.</span>
4 0
3 years ago
Read 2 more answers
An element's atomic number is 65. How many protons would an atom of this element have?
KIM [24]
65. The atomic number is the number of protons in the atom.
7 0
3 years ago
Which of the following is a heterogeneous mixture? [1] Cola [2] Brass Air Coffee with sugar stirred in [5] [3] Soil
Readme [11.4K]

Answer:

Soil is heterogeneous mixture of sand particles of different sizes, shape and of different compositions.

Explanation:

Homogeneous mixtures are defined as the mixtures in which components are evenly spread throughout the solution. The size and shape of the particles are similar in these mixtures.

For example : alloys, salt solution.

Heterogeneous mixtures are defined as the mixtures in which component are unevenly spread throughout the solution. The size and shape of the particles differ in these mixtures.

For example : sand in a water, soil etc.

Brass is an alloy homogeneous mixture of metals.

Air is a homogeneous mixture of gases.

Coffee with sugar stirred in is also homogeneous mixture.

Soil is a heterogeneous mixture of sand particles of different sizes, shape and of different compositions.

4 0
3 years ago
What is the molarity of a solution prepared by dissolving 36. 0 g of naoh in enough water to make 1. 50 l of solution?
Vlada [557]

0.6 mol / L is the molarity of a solution prepared by dissolving 36. 0 g of NaOH in enough water to make 1. 50 l of solution.

The amount of a substance in a specific volume of solution is known as its molarity (M). The number of moles of a solute per liter of a solution is known as molarity. The molar concentration of a solution is another term for molarity.

The ratio employed to indicate the solution's concentration is called its molarity. Understanding a solution's molarity is important since it allows you to determine the actual concentration as well as whether the solution is diluted or concentrated.

Amount of NaOH = 36. 0 g

Amount of water = 1. 50 L

1 mol of NaOH = 40 g,

Moles of NaOH = 36. 0 / 40 g = 0.9 mol NaOH

Molarity of a solution = moles of solute / Liters of solution

Molarity of a solution = 0.9 / 1.50

Molarity of a solution = 0.6 mol / L

To  know more about Molarity refer to:  brainly.com/question/8732513

#SPJ4

4 0
1 year ago
How do sound waves transfer energy?
bazaltina [42]

Answer:

By the vibration of particles in a medium

Explanation:

For example, the energy in sound waves is transferred by the vibration of the molecules in air.

A is wrong. Electromagnetic radiation transfers energy through vibrating electric and magnetic fields.

B is wrong. Sound waves can transfer energy far from the ocean.

C is wrong. A combination of waves just makes a wave with a different shape.

8 0
3 years ago
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