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Some compounds absorb water from the air or have water present in their crystal latices. Thus it is necessary to drive this water off before using them in experiments (or rather knowing exactly how much you are using in the experiment).
As the substance is heated this water loss will be seen as a loss in weight. Thus once the weight loss stops (constant weight) you know you now have a dry reactant.
What else can I help you with?
Why should the crucible be heated to constant mass?
We want to weight exactly only the material - variations of the crucible mass lead to errors. That's why the mass of the crucible must be stabilized.This is very important in gravimetry, it is a basic rule.
What is the purpose of heating The Crucible by Arthur Miller to dull redness until constant weight is obtained?
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What does Balance mean in dance terms?
Balance means an equal distribution on weight
Why is it essential for magnesium chloride solution in the crucible to be heated slowly?
If the solution is not heated slowly, the solution could boil over resulting in lost mass and calculation errors
What does winter mean in as you like it?
As You Like It is a pastoral work, and thus set in an idyllic world of constant springtime or summer. Winter represents the harsh reality of hardship which is usually absent from such stories.
As a crystal of copper sulfate is heated its weight?
As a crystal of copper sulfate is heated, its weight remains constant. The heating process only causes the crystal to lose water molecules, resulting in a color change from blue to white, without affecting its weight.
What is a gas that expands when heated?
Any gas will expand when heated, assuming you keep pressure constant.
Does mass remain constant?
Yes, Mass remains constant because the definition of mass does not mean weight. Mass means the amount of room and object takes.
Why must epsom salts be heated to a constant weight?
To remove the water of hydration. the loss of weight will be the weight of water present in the original salts.
What happens to the pressure of gas when it is heated at a constant heat?
The pressure is higher.
Why Do Gasses Have Two Specific Heats?
One is for constant pressure, the other is for constant volume. These are not the same; for example, if the pressure is maintained constant, and the gas is heated, the volume changes.
What will happen to air if it is heated along a slope element?
Generally, if air is heated, its temperature will increase. And if the pressure remains constant, its density will decrease.
What is the formula for calculating weight when you know the mass?
Weight = Mass x (Local Gravitational Constant)/(Standard Gravitational COnstant)
What will the weight of a ball in water be if its weight in air is 2 newtons?
Weight in a constant gravitational field is also constant, regardless of any surroundings. The weight will be two newtons underwater as well.
Why is constant weight important?
Constant weight is important in scientific experiments to ensure that any change in measurements or observations is due to the variables being tested and not due to changes in weight. Maintaining a constant weight helps to minimize potential sources of error and increases the accuracy and reliability of the experimental results.
Why is weight important?
Yes a constant weight would be important to maintain or gain muscle mass. Constant weight fluctuations are not a good thing, a pound wont matter
When a substance is heated what happens in mass volume and weight?
When a substance is heated, its mass remains constant because mass is a measure of the amount of matter present, which does not change during a physical change like heating. Volume may expand due to thermal expansion, where the particles move farther apart. Weight may appear to change due to differences in gravitational force, but the actual mass remains the same.
