B. the number of organisms in a population that an ecosystem can sustain
Answer:
f = 8 Hz
Explanation:
Given data:
Wavelength of wave = 0.5 m
Speed of wave = 4 m/s
Frequency = ?
Solution:
Formula:
f = v/λ
f = frequency
v = speed
λ = wavelength
Now we will put the values in formula.
f = v/λ
f = 4 m/s / 0.5 m
f = 8 s⁻¹
s⁻¹ = Hz
f = 8 Hz
Answer:
The expression for the number of moles is 5.0 g / 56 g/mol
Explanation:
The mole is the amount of substance that contains as many entities as there are carbon atoms in 12 grams of a carbon-12 isotope. It is the amount of a substance that contains the same number of units as the number of atoms in 12g of carbon - 12 isotope. A mole of an ionic substance contains 6.02 * 10^23 atoms of the element. Mathematically, moles is the mass of a substance in grams divided by the relative molecular mass.
Moles = mass / relative molecular mass
In the given question, mass = 5.0 g
Molecular mass of CaO ( Ca= 40, O = 16) = ( 40 + 16) g/mol = 56 g/mol
Moles = 5.0 g/ 56 g/mol is the expression for the number of moles in 5.0 g of CaO
Answer:
The answer is
<h2>0.99 g/mL</h2>
Explanation:
The density of a substance can be found by using the formula
<h3>
</h3>
From the question
mass of liquid = 3.75 g
volume = 3.8 mL
Substitute the values into the above formula and solve for the density
The density is
We have the final answer as
<h3>0.99 g/mL</h3>
Hope this helps you
