Some electromagnetic radiation is powerful enough to enter cells and cause cause DNA damage. Since DNA is the molecule of heredi
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Answer:
Explanation:
We are asked to find the density of a metal. Density is the mass per unit volume. It is calculated by dividing the mass by the volume.
The mass of the metal sample is 24.64 grams and the volume is 5.91 milliliters. We can substitute these values into the formula.
- m= 24.64 g
- v= 5.91 mL
Divide.
The mass measurement has 4 significant figures the volume measurement has 3 significant figures. Our answer for density must match the least number of significant figures, which is 3.
For the number we calculated, that is the hundredth place. The 9 in the thousandth place tells us to round the 6 up to a 7.
The density of this metal is approximately <u>4.17 grams per milliliter.</u>
<u>Answer:</u>
Density is mass per unit volume.
Its formula is
Density = Mass / Volume
Its units can be kg/L or kg/() or g/mL or g/(
)
Density of various substances are given. The more denser substance goes to the bottom of the graduated cylinder.
Air on the top then comes Wood followed by Corn oil followed by Ice and then Water followed by Glycerin then Rubber then Corn syrup and at last Steel at the bottom which will more denser than all the substances mentioned above.
The staking up of the substances is in the order mentioned below in the tabular column
Molarity is defined as the ratio of number of moles to the volume of solution in litres.
The mathematical expression is given as:
Here, molarity is equal to 1.43 M and volume is equal to 785 mL.
Convert mL into L
As, 1 mL = 0.001 L
Thus, volume = = 0.785 L
Rearrange the formula of molarity in terms of number of moles:
n =
= 1.12255 mole
Now, Number of moles =
Molar mass of potassium hydroxide = 56.10 g/mol
1.12255 mole =
mass in g =
= 62.97 g
Hence, mass of = 62.97 g