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Why is it important to add water to a heated crucible when obtaining the mass of MgO?
Wiki User
∙ 11y ago
Pure MgO will absorbe water from the air causing an error in the experiment if that extra mass is not accounted for. By adding water in the very beginning you eliminate this error.
Wiki User
∙ 11y ago
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When cuso45h2o is heated in a crucible there is a loss of water how is the amount of water loss determined?
Weigh mass before heating and weigh mass after heating. Before mass - after mass.
What is the term a hydrate with the water heated off?
Anhydrous is the term for a hydrate with water heated off. when a hydrated salt is heated, it loses water of crystallization leaving an anhydrous salt.
Why do you need to heat the clean crucible before using it?
If you are using the crucible for any type of gravimetric analysis (observing changes in mass upon the heating of a compound), then before you add your sample you need to bake the crucible in order to drive off any adsorbed materials---namely water. If you do not do this, then the initial mass of your compound will be artificially high, and so when all that adsorbed stuff is baked off, your change in mass will be high.
Greater amounts of sugar will dissolve in water if water?
heated
What does water in the sea turn into when it is heated by the sun?
When water in the ocean is heated by the sun it turns into water vapour and evaporates, however it leaves the salt behind as it is made of separate molecules.
WHY EMPTY CRUCIBLE HEATED BEFORE STARTED EXPERIMENT?
The empty crucible is heated AND WEIGHED, so that you can drive off any moisture and/or other particles that might add to the weight of the empty crucible. You will eventually weigh the crucible again at the end of the experiment to determine the weight (mass) of some compound. Thus, it is important to have a correct "starting mass" of the crucible.
When cuso45h2o is heated in a crucible there is a loss of water how is the amount of water loss determined?
Weigh mass before heating and weigh mass after heating. Before mass - after mass.
What might happen if you add the water rapidly to your product in a hot crucible?
Adding water rapidly to a hot crucible might cause the crucible to brake.
What might happen if you add water rapidly to you product in a hot crucible?
Adding water rapidly to a hot crucible might cause the crucible to brake.
During the cooling of the fired crucible water condensed on The Crucible wall before its mass measurement Will the reported percent water in the hydrated salt be reported too high or too low?
The percent of water is determined by the loss is mass after heating the water vapor condensed on the crucible wall before heating.
What is water heated to gas called?
Water heated to a gas is eiher called water vapor or steam.
Why is water added to The Crucible in order to complete the conversion to magnesium oxide?
Water is added to the crucible to convert magnesium (Mg) to magnesium oxide (Mg(OH)2) because when magnesium reactions with air, it also reacts with the nitrogen (N2) in the air to form magnesium nitride (Mg3N2).3 Mg + N2 --> Mg3N2By adding water to the crucible containing the magnesium nitride, the magnesium nitride will become magnesium hydroxide. The ammonia gas produced will rise out of the crucible, eliminating the nitrogen.Mg3N2 + H2O --> 3Mg(OH)2 + 2NH3After heating the magnesium hydroxide, the product becomes just magnesium oxide.3Mg(OH)2 + heat --> MgO + H2OIn other words, when water is added, the nitrogen will react with the water, causing it to form ammonia and thus evaporating from the substance. This leaves behind the magnesium hydroxide, which becomes magnesium oxide and water after it is heated.
Water is heated in kettle theinside water is heated by convection a person sitting near the fire receives heat by?
Actually, the water inside is heated mainly by conduction. A person nearby is heated by both convection and radiation.
What is the name of gas when water is heated?
heated water is called vapour. the process is called evaporation.
What is a super heated water from under the ground?
A geyser is super heated water from under the ground.
How does blood keep its cool?
The water in your body gets heated, and then the heated water perspires as sweat.
Does sugar water have to be heated to create rock candy?
yes it has to be heated in water in a supersaturated solution.
