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How do you calculate volume if mass and density are given?
Volume = mass divided by density (using consistent units).
If a 12.8g sample of sodium completely reacts with 19.6 g of chlorine to form 32.4 g of sodium chloride are these chemical changes consistent with the law of conservation of mass?
Yes, the chemical changes are consistent with the law of conservation of mass. The total mass of the reactants (12.8g of sodium + 19.6g of chlorine) is equal to the total mass of the products (32.4g of sodium chloride), demonstrating that mass is conserved during a chemical reaction.
Why the process heating cooling weighing repeated until constant mass is obtain?
The process of heating, cooling, and weighing is repeated to ensure that the sample reaches a consistent and stable mass. This is important for accurate measurements and to verify that the sample has reached a consistent composition and state. Repeating the process helps to ensure that any changes in mass are due to the sample composition and not external factors.
When a piece of steel wool is burned it gains mass. Which explanation is consistent with the law of conservation of mass Matter was created during the chemical reaction. Heat changed into matter. A ch?
The explanation consistent with the law of conservation of mass is that matter was not created; instead, the steel wool reacts with oxygen in the air during combustion. This reaction produces iron oxide, which has a greater mass than the original steel wool due to the mass of the oxygen that has combined with it. Therefore, the increase in mass is due to the addition of this oxygen, not the creation of new matter.
En a piece of steel wool is burned it gains mass. Which explanation is consistent with the law of conservation of mass Matter was created during the chemical reaction. Heat changed into matter. A chem?
When a piece of steel wool is burned, it gains mass because it reacts with oxygen in the air to form iron oxides. This process is consistent with the law of conservation of mass, which states that matter cannot be created or destroyed in a chemical reaction. Instead, the mass of the reactants (steel wool and oxygen) equals the mass of the products (iron oxides). Thus, the increase in mass is due to the incorporation of oxygen from the environment, not the creation of new matter.
Can mass of an electron be doubled?
No, the mass of an electron is a fundamental constant in physics, and it cannot be doubled. The mass of an electron is approximately 9.11 x 10^-31 kilograms and remains consistent regardless of external influences.
Why use mass and not weight?
Mass is a measure of the amount of matter in an object, while weight is a measure of the force of gravity acting on an object. Mass is constant regardless of location, but weight changes depending on the strength of gravity. In scientific calculations and comparisons, mass is a more consistent and reliable measure.
Why is mass and density different in water?
Mass is the amount of matter in an object, while density is the mass of an object per unit volume. Water has a consistent density of about 1 g/cm^3 at standard conditions, but the mass of water can vary depending on the volume of water present. This is why mass and density are different concepts when it comes to water.
What is the SI unit for molar mass?
The SI unit for molar mass is grams per mole (g/mol). It represents the mass of one mole of a substance, which is a convenient way to compare the masses of different substances on a consistent scale.
How can you tell when a constant mass is reached?
A constant mass is reached when the measurements of the mass stabilize and do not show any further significant changes. This could be indicated by consistent readings on a balance scale or when the balance beam settles and remains level.
What is Mass is measured against a standard using a .?
Mass is measured against a standard using a balance. A balance compares the mass of an object to known masses, ensuring accurate measurement. The standard for mass is typically based on the kilogram, defined by the International System of Units (SI). This allows for consistent and reliable mass measurements across different contexts.
How would you calculate the density of an object?
Density is calculated by dividing the mass of an object by its volume. The formula for density is: Density = Mass / Volume. Make sure to use units that are consistent, such as grams for mass and cubic centimeters for volume, to get the correct density value.
