Answer:
Explanation:
Given that;
The energy gap between the valence band and the conduction band in the widely-used semiconductor gallium arsenide (GaAs) is Δ = 1.424 eV.
So; that implies that:
Suppose that we consider a small piece of GaAs with 1020 available electrons, -- This is taking about the numbers of electrons used which is :
Temperature is given as:
Number of electrons can be calculated by using the formula;
Answer:
The answer to your question is 160 g of Calcium
Explanation:
Data
mass of Calcium = ?
mass of Hydrogen = 8 g
reactant = HCl
Process
1.- Write the balanced chemical reaction
Ca + 2HCl ⇒ CaCl₂ + H₂
2.- Look for the atomic number of Calcium and hydrogen
Calcium = 40 g
Hydrogen = 1 x 2 = 2 g
3.- Use proportions to calculate the mass of calcium needed.
40 g of Calcium ---------------- 2 g of hydrogen
x ----------------- 8 g of hydrogen
x = (8 x 40) / 2
x = 320/2
x = 160 g of Calcium
Answer:
<u>d. Volume</u>
Explanation:
<em>The milliliter is a metric unit used for measuring the capacity or volume of an object.</em>
I got this from google so dont report me
The speed of nerve impulses <span>varies enormously in </span>different types<span> of neuron. The fastest travel at about 250 ... For example, if </span>you <span>burn your fingers it is </span>important<span> that your brain gets the message to withdraw your hand very quickly. Back to top. Enlarge.
Also,
</span>There are two different kinds of nerve<span> fibres: fibres that carry information towards the cell body, called dendrites, and fibres that carry information away from it, called axons</span><span>.</span>
Moles= mass/Mr
Moles= 3.82/40
Moles= 0.0955 mol
