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Does the melting point and freexing point change depending on the mass?
The melting point and freezing point of a substance generally do not change based on the mass of the sample. They are intrinsic properties of the substance that remain constant regardless of the amount being measured.
when petrol burns in air is its mass increased or decreased?
When petrol burns in air, its mass is decreased. This is because during combustion, petrol combines with oxygen in the air to form carbon dioxide and water vapor, resulting in a decrease in the mass of the original petrol.
Is Melting coin being heated and turn black this is used as a test for metal a chemical or a physical change?
The melting of a coin due to heat is a physical change as it alters the physical state of the coin from solid to liquid without changing its chemical composition. The black color that appears is likely due to the formation of an oxide layer on the surface of the coin, also a physical change.
A 6.80 g coin is dissolved in nitric acid and 6.21g of AgCl was precipitated by the addition of excess sodium chloride calculate the percent silver in the coin?
The atomic mass of silver is 107.868 and the atomic mass of chlorine is 35.453. Therefore, the fraction by mass of silver in silver chloride is 107.868/(107.868 + 35.453) or 0.7526. The precipitated silver chloride therefore contains 0.7526 X 6.21 or 4.674 grams of silver from the coin. The mass percent silver in the coin therefore is 100(4.674/6.80) or 68.7 % silver, to the justified number of significant digits.
A metallic coin is given a negative electric charge How does its mass change?
its mass will increase by an amount too small to measure directly
How can the mass of a coin be decreased?
You cant, the mass will always be the same, NO matter what.
What is the melting point of a coin?
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What type of relationship is displayed by decreased mass and decreased gravity?
Directly proportional
What kind of relationship is displayed by decreased mass and decreased gravity?
The relationship between decreased mass and decreased gravity is inversely proportional. This means that as the mass of an object decreases, the force of gravity pulling on it also decreases. This is described by Newton's law of universal gravitation.
What is the melting ponit of the glass?
mass
What happens to acceleration when mass is increased?
it gets decreased
What is the mass of copper coin?
The mass of a copper coin can vary depending on the size and denomination of the coin. On average, a copper coin like a US penny weighs about 2.5 grams.
How does the mass of a melting solid affect the closed systems mass?
It doesnt. Law of Conservation of Mass.
What is an initial mass of 48.702 g after heating the mass had decreased to 3.0662 g?
The initial mass is 48,702 g.
What is melting point of coins?
This can't be answered. It depends what the coin is made of.
How is a peso coin made by?
a peso coin is made through melting of copper ores and molding it into peso coins
What does aging do to a coin's mass?
Aging can lead to a coin losing mass due to the oxidation and corrosion of its metal composition, especially in coins made of copper or silver. This process, known as tarnishing, can result in the gradual loss of material from the surface of the coin, which reduces its overall mass over time.
