Answer:
This is the temperature indicated by a moistened thermometer bulb exposed to the air flow. The evaporation is reduced when the air contains more water vapor. The wet bulb temperature is always lower than the dry bulb temperature but will be identical with 100% relative humidity.
Explanation:
Answer:
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Answer:
- <em>The molar concentraion is </em><u>0.74 M</u>
Explanation:
<u>1) Data:</u>
a) % w/v = 2.5%
b) compound: H₂O₂ (from a table molar mass = 34.0147 g/mol)
c) M = ?
<u>2) Formulae:</u>
a) % w/v = (mass of soulte / volume of solution) × 100
b) numer of moles, n = mass in grams / molar mass
c) M = number of moles of solute / liters of solution
<u>3) Solution:</u>
a) T<u>ake a base of 100 ml of solution (0.100 liter)</u>:
- %w/v = 2.5% = 2.5 g solute / 100 ml solution
- mass of solute = 2.5 g / 100 ml × 100 ml = 2.5 g
b) <u>Calculate the number of moles of solute, n</u>:
- n = mass in grams / molar mass = 2.5 g / 34.0147 g/mol = 0.0735 mol
c) <u>Calculate the molarity, M</u>:
- M = n / V in liter = 0.0735 mol / 0.100 liter = 0.735 M
Round to two significant figures: 0.74 M ← answer
Everything on Earth can be easily described in terms of one of four forms of matter: solid, liquid, gas, and plasma. Students are familiar with the three common forms of matter: solids, liquids, and gases. A solid is an object that has a form.
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