Volume of 100 drops: 0.43 dL
Explanation:
We can solve this question by applying the rule of three.
In fact, we know that:
- The volume of 1 drop of medicine is 0.43 mL, so the ratio between number of drops and volume (in mL) is 1 : 0.43
- Then we want to find the volume of 100 drops
So we can write the following equation:
where V is the volume of 100 drops.
Solving for V,
And keeping in mind that
1 dL = 100 mL
We can convert into deciliters:
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Heat flow by conduction requires that the two systems must not be touching each another.
<h3>What is heat energy?</h3>
Heat energy is a form of energy that exists due to a temperature difference between two objects.
Heat energy flows from an object at higher temperature to an object at a lower temperature.
Heat transfer by conduction involves the vibration of particles of the medium transferring heat due to contact between the two objects.
Therefore, heat flow by conduction requires that the two systems must not be touching each another.
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Answer:
[HI] = 0.097 M
Explanation:
Let's consider the following reaction.
2 HI(g) ⇄ H₂(g) + I₂(g)
The order of reaction for HI is 1. Thus, we can calculate the concentration of HI ([HI]) at certain time using the following expression:
ln [HI] = ln [HI]₀ - k. t
where,
[HI]₀ is the initial concentration of HI
k is the rate constant
t is the time elapsed
When [HI]₀ = 0.440 M and t = 0.210 s, the concentration of HI is
ln [HI] = ln (0.440) - 7.21 s⁻¹ × 0.210 s
ln [HI] = -2.33
[HI] = 0.097 M
Protons= 88
Neutrons= 138.
The weight of an element is comprised of entirely protons and neutrons. To get the protons look at the atomic number on the periodic table (88) and those are your protons. To get the neutrons take the weight of the isotope that you have and subtract the protons, giving you 138.
Answer:
37
Explanation:
Atomic mass is the sum of protons and neutrons in an atom.