0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
What is the mass of 136 mL of Mercury?
If you know the density of mercury, you can determine the mass of a specific volume of mercury. Mercury has a density of 13.534g/cm3. 1cm3 = 1mL, so we can restate its density as 13.534g/mL. Density = mass/volume. If we know any two variables, we can manipulate the density equation to find the third variable. In this case, we know volume and density, so to find the mass, do the following calculation: Mass = density x volume Mass Hg = 13.534g/mL x 136mL = 1.84g Hg* *The answer is limited to 3 significant figures, because 136mL has only 3 significant figures, even though the density has 5 significant figures. When multiplying or dividing, the answer is limited to the same number of significant figures as the measurement with the fewest significant figures used in the calculation.
What is the meaning of gross mass?
It usually refers to the mass of an object together with its container. For example the gross mass of a tin of soup will be the mass of the soup plus the mass of the tin. As a consumer, you will probably be interested in only the net mass - the mass of the soup - but for the haulier it is the gross mass that matters. For something like breakfast cereal the mass of the container may well be a significant proportion of the gross mass.
What is the density of a rock that has a mass of 22.4g and a volume of 8cm3?
Density = mass/volume Density = 22.4g/8cm3 = 2.8g/cm3 or 3g/cm3 if significant figures are considered.
Why is density expressed in two significant figures?
Because density expressed in two significant figures depends on your accuracy of your measurements of mass and volume to calculate as well as any variables that you are expected to use.
Which mass measurement is expressed in exactly four significant figures 0.001 g 0.095 g 1005 g 1000 g?
1005 g
How many significant figures are in 730000 kg?
There are 2 significant figures in this mass.
How many significant digits are in the mass measurement 1.050 grams?
There are 4 significant digits
How many significant figures is the atomic mass of lithium given?
The atomic mass of lithium is typically given with three significant figures, which are 6.94.
The atomic mass of Cu-63 is expressed to what number of significant figures?
The atomic mass of Cu-63 should be expressed to two significant figures, which are 63.
What happens to the mass of an atom when it loses two electrons?
The mass become lower but the difference is not significant.
Is the change in mass significant when an object gains or loses electrons?
No, the change in mass is generally not significant when an object gains or loses electrons because electrons have a very small mass compared to protons and neutrons in the nucleus. The change in mass from gaining or losing electrons is usually negligible.
Suppose the mass of a car is 1200 kg and the mass of the driver is 65 kg what is the total combined mass of the car and driver expressed with the correct number of significant figures?
If the mass of a car is 1200 kg, and the mass of the driver is 65 kg, the total combined mass of the car and driver expressed with the correct number of significant figures is 1265 kg.
Suppose the mass of a car is 1200 kg and the mass of the driver is 65 kg. What is the total combined mass of the car and driver expressed with the correct number of significant figures?
If the mass of a car is 1200 kg, and the mass of the driver is 65 kg, the total combined mass of the car and driver expressed with the correct number of significant figures is 1265 kg.
What is a significant feature of the atomic mass?
The relative atomic mass represents the number of nucleons (neutrons+protons) of an atom.
When did disconnection from food production became a significant factor?
mass production
What is the mass in grams for 5 moles of Mg with the correct number of significant digits?
The molar mass of magnesium (Mg) is 24.305 g/mol. To find the mass of 5 moles of Mg, you would multiply the number of moles by the molar mass: 5 moles x 24.305 g/mol = 121.525 g. Since the molar mass has 5 significant digits, the mass should be rounded to 5 significant digits as well, giving a final answer of 121.53 g.
Are electrons in atoms significant?
By mass, no. By charge and in the determination of chemical bonds, yes.
