Answer:
The answer to your question is molality = 0.22
Explanation:
Data
molality = ?
mass of glucose = 100 g
molar mass of glucose = 180 g
mass of water = 2.5 kg
Process
1.- Calculate the moles of glucose using proportions
180 g ------------------ 1 mol
100 g ------------------ x
x = (100 x 1) / 180
x = 100 / 180
x = 0.56 moles
2.- Calculate the molality
Formula
molality = moles / mass of solvent
- Substitution
molality = 0.56 / 2.5
- Simplification
molality = 0.22
<span>0.967 x 10^-6 HZ
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Explanation:
Significant figure is the measure of how accurately something can be measured. It carries meaning contributing to its measurement resolution. It is important to use proper number of significant figures to get a precise measurement. For example, if we use a meter stick then measurements like 0.874 meters, or 0.900 meters, are good because they indicate that we can measure to the nearest millimeter. Whereas a measurement like 0.8 does not tell that a meter stick can measure to the nearest millimeter.
Answer:
The Sun radiates huge amounts of energy. Only a small portion of that energy hits the Earth, but it is enough to light our days, heat our air and land, and create weather systems over the oceans. Most of the energy you will learn about comes from the Sun. The Earth also gives off energy.
Explanation:
Answer: 5
Explanation: this is because the energy level of the emitted of absorbed photon increases as the number of electron shell decreases, thereby making the inner shell have higher energy than other shells
