The density of the sphere is 0.0713 g/cm^3.
<h3>What is density? </h3><h3> </h3>
The density of a substance indicates how dense it is in a particular area. Mass per unit volume is the definition of a material's density. In essence, density is a measurement of how closely stuff is packed. It is a special physical characteristic of a certain thing.
The Greek scientist Archimedes made the discovery of the density principle. If you are familiar with the formula and the relevant units, calculating density is simple. The letter D can also be used to signify density instead of the symbol.
The circumference of the sphere = 32.5 mm
2 (pi) r
2 × 22/7 × r = 32.5
44/7 × r = 32.5
44 × r = 32.5 × 7
44 × r = 227.5
r = 227.5/44
r = 5.2
Now, V = (4/3) (pi) r^3
V = 4/3 × 22/7 × (5.2)^3
V = 4/3 × 22/7 × 140. 608
V = 589. 21 mm
V = 58.921 cm^3
Density = 4.20/58.92
D = 0.0713 g/cm^3
Therefore, the density is 0.0713 g/cm^3.
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The concept to be used in order to determine the diameter of the second cell in the photograph is that of the ratio and proportion. The ratio of the first set of measurements should be proportional (equal) to the ratio of the second set.
Ratio of first set of diameters,
r = diameter of Cell A / diameter of Cell B
r = 12 micrometers/20 micrometers
r = 3/5
If we let D be the diameter of the cell B in photographs,
r = 3/5 = 15 cm/x cm
The value of x from the equation is 25. Hence, the diameter of cell B is 25 cm.
Answer: c.
Electrons are transferred → Ions form → Ions are attracted to each other
have a great day
Explanation:
Answer:
pH → 1.13
Explanation:
Our solution is pure HCl
HCl(aq) + H₂O(l) → H₃O⁺(aq) + Cl⁻(aq)
As a strong acid, it is completely dissociated.
1 mol of HCl, can give 1 mol of H⁺ to the medium. Water does not participate. Let's find out M for the acid.
1st step: We convert the mass from mg to g → 327 mg . 1g /1000mg = 0.327 g
2nd step: We convert the mass(g) to moles: 0.327 g / 36.45 g/mol = 8.97×10⁻³ moles
3rd step: We convert the volume from mL to L → 120mL . 1L /1000 mL = 0.120L
Molarity (mol/L) = 8.97×10⁻³ mol / 0.120L = 0.075M
We propose: HCl(aq) + H₂O(l) → H₃O⁺(aq) + Cl⁻(aq)
0.075M 0.075M
pH = - log [H₃O⁺] → - log 0.075 = 1.13 → pH
Answer:
Lavender
Explanation:
Lavender is the anticoagulant, commonly used for hermatology tests