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What happens if a substance of unknown composition is heated in a sealed container As a result the mass of the container and its contents?
If a substance of unknown composition is heated in an open container will Its mass will stay the same as a result the mass of the container and its contents decreases. A substance of an unknown composition is heated in a sealed container the mass of the container and its content remains the same.
What is the amount of mass in a give volume of a substance?
The mass of a given volume of a substance depends completely on the density of the substance being analyzed. Density = Mass / Volume
What does the symbol mol mean in chemistry?
It's a unit of measurement for the amount of substance, used when talking about an element's mass.
What substance is remaining when magnesium carbonate powder is heated Also why does the mass change Thanks?
Magnesium oxide. Carbon dioxide is released as agas.
Why did barium chloride lose mass after being heated?
Crystallised BaCl2·2H2O will be de-hydrated when heated, loozing 2H2O per mol BaCl2·2H2O
When a substance is heated what happens in mass volume and weight?
Both the mass and weight remain unchanged. However; generally; the volume increases due to the thermal expansion of the substance when heated up.
What happens if a substance of unknown composition is heated in a sealed container As a result the mass of the container and its contents?
If a substance of unknown composition is heated in an open container will Its mass will stay the same as a result the mass of the container and its contents decreases. A substance of an unknown composition is heated in a sealed container the mass of the container and its content remains the same.
What is the amount of mass in a give volume of a substance?
The mass of a given volume of a substance depends completely on the density of the substance being analyzed. Density = Mass / Volume
A substance breaks down into its component elements when it is heated If 61.8 grams of the substance is present before it is heated what is the combined mass of the component elements after heating?
68.0 grams due to the law of conservation of mass which states that mass can not be lost but only converted.
Which term is used to represent the mass of 1 mole of molecules of a substance?
This is equal to the molar mass of this substance.
What is the specific heat of an unknown substance if 2000 j of energy are required to raise the temperature of 4 grams of the substances 5 degrees celsius?
You cannot calculate the specific heat without knowing the molar mass of the substance in question. Units of specific heat are given in joules/mol, with no reference to molar mass there is no way to calculate the number of moles of substance being heated.
What is the difference between your mass and weight?
Well, mass has the following qualities:Mass is the amount of material in a substance, or the quantity of the material in a substance.Also, the mass of a substance is measured in grams (g).Weight is different -- it is what you would think it is: how much pressure is being applied from a substance onto the surface it is standing or sitting on. Mass is confused with weight a lot because the measurement in grams of weight and mass is always the same, it's just that mass's definition is the amount of material in a substance, not how much pressure is being applied onto a surface from a substance. The weight of you depends on the gravity level, so the weight can change. The mass doesn't, but the measurement of the mass does (since the measurement symbol is technically a weight measurement symbol).I understand if you're confused with this, because most people are the first time they hear about it (including me). So don't feel bad if you don't understand. You will eventually get it.
What does the symbol mol mean in chemistry?
It's a unit of measurement for the amount of substance, used when talking about an element's mass.
What substance is remaining when magnesium carbonate powder is heated Also why does the mass change Thanks?
Magnesium oxide. Carbon dioxide is released as agas.
Why did barium chloride lose mass after being heated?
Crystallised BaCl2·2H2O will be de-hydrated when heated, loozing 2H2O per mol BaCl2·2H2O
When volume is increased does pressure increase or decrease?
Neither. Volume is independent of mass. Effectively, if you increase the volume of a substance you are moving the particles that comprise that substance apart. Eventually, you would have a gas which expands to fill the volume of its container.
How do you calculate the density of a substance?
Density is the mass of a substance divided by the volume of that same mass of substance.
