Answer:
It sounds like they are studying French phonemes
Explanations:
I just learned this.
A simple magnetic compass can be used
Answer:
Formula Weight of gas sample = 20.1 g/mole => Neon (Ne)
Explanation:
Use Ideal Gas Law formula to determine formula weight and compare to formula weights of answer choices.
PV = nRT = (mass/fwt)RT => fwt = (mass/Volume)RT = Density x R x T
Density = 0.900 grams/L
R = 0.08206 L·atm/mole·K
T = 0.00°C = 273Kfwt = (0.900g/L)(0.08206L·atm/mole·K )(273K)
= 20.1 g/mol => Neon (Ne)
A change in temperature or color are two signs that a chemical reaction has taken place.
Answer: 36.9 moles
Explanation: According to reaction equation, amount of Oxygen
moles are three times of amount of ethanol.
